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vox_mundi

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Re: Heatwaves
« Reply #1350 on: July 11, 2024, 01:37:50 AM »
Greece: A prolonged period of very high temperatures and the absence of noteworthy rainfall is expected this July, the National Observatory of Athens/meteo.gr said on Tuesday, ANA reports.

The cause of the prolonged heatwaves in Greece, it said, is the unusual atmospheric circulation or air movement across Europe. Deep depressions - areas of low pressure - are affecting Western Europe while favoring the transport of warm air masses from Africa to Greece.

A characteristic feature of the next few days will be that the maximum daily temperature will surpass 38 to 40 degrees Celsius in many regions of Greece daily, reaching levels 6 to 8 degrees Celsius above the normal values for the season.

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Japan: The streets of Tokyo have been hit by temperatures nearing 40 degrees Celsius as authorities issue heatstroke alerts in the megacity and various other parts of Japan. At least six people have died due to the heat.

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There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

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vox_mundi

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Re: Heatwaves
« Reply #1351 on: July 11, 2024, 04:44:55 PM »


https://www.wpc.ncep.noaa.gov/heat_index_MAX/bchi_day5.html


https://x.com/NWSPhoenix/status/1811006411268313373







https://www.weather.gov/psr/Heat

----------------------------------------------------

'It's Hell Outside': Sizzling Heat Wave In Parts of Southern and Central Europe Prompts Alerts
https://abcnews.go.com/International/wireStory/hell-sizzling-heatwave-parts-southern-central-europe-prompts-111840415

Weather alerts, forest fires, melting pavement in cities: A sizzling heat wave has sent temperatures in parts of central and southern Europe soaring toward 40 degrees Celsius (104 Fahrenheit) in some places.
« Last Edit: July 11, 2024, 05:06:18 PM by vox_mundi »
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

Fiat iustitia, et pereat mundus

vox_mundi

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Re: Heatwaves
« Reply #1352 on: July 14, 2024, 03:27:33 PM »
Record-breaking heatwave shifts east as millions of Americans under heat alert
https://www.theguardian.com/environment/article/2024/jul/14/us-heat-wave-moves-east

Over 245 million Americans are expected to experience 90°F (32°C) temperatures early this week, with some as high as 105°F (41°C)

https://www.wpc.ncep.noaa.gov/discussions/hpcdiscussions.php?disc=pmdspd&version=1&fmt=reg

-----------------------------------------------------------------------

Dozens of Americans Die in Brutal Heat Wave
https://www.washingtonpost.com/climate-environment/2024/07/10/heat-wave-us-death-toll/



A brutal heat wave that swept across the United States this week is estimated to have killed at least 28 people, The Washington Post reports, with that figure expected to climb as official investigations into the deaths continue.

So far, this is based solely on preliminary reports from just three states — California, Oregon, and Arizona — according to WaPo. The heat wave also scourged major east coast hubs like New York City, where it got so hot that a swing bridge got stuck open, but the broader extent of heat-related casualties on this side of the country is unclear.

California has accounted for most of the known death toll, with an ongoing heatwave seeing multiple records smashed as temperatures in several cities soared past 110 degrees Fahrenheit.

... As grim as this already sounds, experts stress that we're still not getting the full picture because of the complicated nature of judging whether a death was heat-related. According to WaPo, they often can be misclassified as deaths due to heart failure, so the actual death toll is likely much higher.

In 2023, which was the hottest year ever recorded, the US reached over 2,300 heat-related deaths, the most ever in a single year. That's up from 1,700 deaths the year before.

These deaths have been steadily climbing, WaPo notes. But scientists warn that we could see a catastrophic surge in the death toll as the heat — and the corresponding demand in AC — puts the power grid under stress, too.

One study found that a blackout during a nasty heat wave in Arizona alone could kill over 13,000 people. Shoring up our infrastructure against these threats will be important, but if we're going to wake up people to the threat now, the need to accurately gauge heat deaths shouldn't be overlooked

---------------------------------------------------

Heat wave puts Central Park horse drivers on ice with ‘unusually long’ stretch of work stoppages: ‘It’s killing us’
NEW YORK -- New York City is expected to have its third heat wave of the year next week. It could begin Sunday, when temperatures could reach the low and mid 90s. With humidity, the heat index could exceed 105.

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It's Getting So Hot That Medical Choppers Can't Fly to Rescue People Dying From Heat
https://www.detroitnews.com/story/news/nation/2024/07/11/as-extreme-heat-bakes-the-west-emergency-helicopters-struggle-to-fly/74369854007/
https://futurism.com/the-byte/hot-medical-helicopters-cant-fly-rescue-heat

An ongoing heat wave has gripped the US West Coast, triggering record-breaking temperatures — a terrifying, climate change-driven reality.

Death Valley National Park saw temperatures soar to dangerous levels, leading to the death of a motorcyclist over the weekend.

Adding to the peril, the air is becoming so hot that helicopters are struggling to stay airborne, which is a particularly a dangerous situation given their important role in responding to emergencies in hard-to-reach places. That's because the choppers' blades have less air to push against, affecting their ability to take off and maneuver

As the Washington Post reports, a California helicopter operator had to decline at least two rescue calls over the weekend, including a call related to the motorcyclist in Death Valley, who succumbed to heat exposure and was declared dead at the scene (temperatures rose to a stunning 128 degrees Fahrenheit the day the motorcyclist died.)

"Due to the high temperatures, emergency medical flight helicopters were unable to respond, as they generally cannot fly safely over 120 degrees," a press release by the Death Valley National Park Service reads

... "It’s something that we’re going to have to be more aware of now," Stanford University Hospital’s medical helicopter response team member Douglas Evans added. "I see that things are warming up and I expect it just to get worse."

------------------------------------------------------------

Over 500,000 in Texas remain without power a week after Hurricane Beryl during heatwave

https://poweroutage.us/area/state/texas
« Last Edit: July 14, 2024, 10:24:41 PM by vox_mundi »
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

Fiat iustitia, et pereat mundus

HapHazard

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Re: Heatwaves
« Reply #1353 on: July 14, 2024, 10:08:34 PM »
Things have really changed here in the southern half of BC. Up until Wednesday July 3rd, it was kind of wet & not too hot. Here's the forecast for a weather station not too far from me; elevation is approx. 1200m. It's been like this since the 3rd. Summer is here!  :-[

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vox_mundi

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Re: Heatwaves
« Reply #1354 on: July 14, 2024, 10:26:38 PM »
Like that here on the East coast with 70-80% humidity

« Last Edit: July 14, 2024, 10:34:39 PM by vox_mundi »
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

Fiat iustitia, et pereat mundus

HapHazard

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Re: Heatwaves
« Reply #1355 on: July 14, 2024, 10:50:30 PM »
I'm just thankful that I live at a high elevation, so we get those cool nights.
If I call you out but go no further, the reason is Brandolini's law.

vox_mundi

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Re: Heatwaves
« Reply #1356 on: July 15, 2024, 08:21:34 PM »
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

Fiat iustitia, et pereat mundus

vox_mundi

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Re: Heatwaves
« Reply #1357 on: July 17, 2024, 04:28:05 PM »
'Hellishly Hot' Southern Europe Bakes Under Temperatures Topping 104 F
https://www.npr.org/2024/07/17/nx-s1-5043309/southern-europe-heat-wave-104-degrees



ROME — The Italian health ministry placed 12 cities under the most severe heat warning Tuesday as a wave of hot air from Africa baked southern Europe and the Balkans and sent temperatures over 40 degrees Celsius (104 degrees Fahrenheit), with the worst still to come.

Croatia reported the highest-ever temperatures of the Adriatic Sea, with the thermometer reaching nearly 30 degrees Celsius (86 degrees Fahrenheit) at the southern walled city of Dubrovnik, the country's most popular tourism spot. In Serbia, the state power company reported record consumption Tuesday due to the use of air conditioning.

https://www.severe-weather.eu/global-weather/summer-season-2024-historic-heatwave-balkans-eastern-europe-mk/

... Temperatures were expected to hit 42 C on Wednesday and Thursday in several countries. Spain's national weather service said thermometers could reach 44 C (111 F) in the southern Guadalquivir river basin in the coming days.



In Albania, where temperatures were expected to hit 42 C, a 72-year-old man was found dead at his farm in Memaliaj, 200 kilometers (125 miles) south of the capital Tirana and the cause of the death is believed to be the heat, the local Panorama portal reported.

For the second time this month, North Macedonia faced a heatwave with temperatures going up to 42 C. Some 200 wildfires have been raging in the country since the beginning of the month, with one firefighter so far injured. The government has declared a monthlong state of crisis.

For Serbia, Croatia and Bosnia, it's the second week that temperatures have been hovering around 40 C, with the Bosnian town of Mostar registering that high for the sixth consecutive day. Meteorologists said the heat wave was expected to peak on Tuesday and slowly ease toward the end of the week.

Romania and neighboring Moldova have also been gripped by an intense heatwave over the past week, with temperatures in both country's capitals, Bucharest and Chisinau respectively, exceeding 40 C this week.

In Italy, the health ministry placed 12 cities – from Trieste in the north to Rome in the center – under a red alert heat warning, the highest state of heat emergency. In cities under such warnings, everyone — not just the elderly or young children — is urged to stay indoors during the hottest parts of the day and avoid strenuous outdoor exercise and heavy foods.

Much of Greece was also sweltering in a heat wave due to last until the end of the week, with temperatures in some areas forecast to reach 42 C. The heat wave was predicted to peak on Wednesday and Thursday, particularly affecting regions of central, western and northern Greece, where temperatures could rise to 43 C.

« Last Edit: July 17, 2024, 04:36:02 PM by vox_mundi »
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

Fiat iustitia, et pereat mundus

kassy

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Re: Heatwaves
« Reply #1358 on: July 22, 2024, 05:34:42 PM »
Japan bakes as temperatures across the country rise above 35 C

Extreme heat baked a broad swath of western and eastern Japan on Sunday, with temperatures exceeding 35 degrees Celsius in many major cities nationwide — a trend likely to continue through Wednesday.
In Toyooka, Hyogo Prefecture, the mercury hit 38.2 C, while nearby Miyazu, Kyoto Prefecture, saw the temperature rise to 37.3 C, according to data from the Meteorological Agency. The temperature in the city of Kyoto rose to 37.9 while the town of Gunge, on Hyogo Prefecture's Awaji Island hit 38 C. In Toyota, Aichi Prefecture, a high of 37.6 C was recorded

...

https://www.japantimes.co.jp/news/2024/07/21/japan/science-health/japan-high-temperatures/
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kassy

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Re: Heatwaves
« Reply #1359 on: July 28, 2024, 09:01:03 AM »
Iran hits 40-50C. 42C in Tehran. The south east of the country is at 50C.

https://www.nu.nl/buitenland/6322360/iran-ruim-een-dag-bijna-volledig-op-slot-vanwege-extreme-hitte.html
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kassy

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Re: Heatwaves
« Reply #1360 on: August 13, 2024, 03:13:31 PM »
European heatwave killed over 47,000 people in 2023, more women than men

It was continent’s second deadliest year on record for heat-related mortality after 2022

Extreme heat killed more than 47,000 people across Europe last summer, marking the continent’s second deadliest year on record for heat-related mortality after 2022.

The figure was estimated by scientists at the Barcelona Institute for Global Health in a study published by Nature Medicine on Monday.

The study also found that more women died of heat-related illnesses than men, with southern Europe, which has been scorched by record temperatures and rising wildfires due to climate crisis, hit the worst.

Scientists analysed mortality data from 823 regions in 35 European countries and temperature records to arrive at the estimate.

Greece recorded the highest mortality rate at 393 deaths per million, followed by Bulgaria, Italy and Spain. More than 40 per cent of southern Europe was affected by extreme heat in July.

The total death toll for the year reached 47,690, with 57 per cent of the deaths occurring during two major heatwaves in mid-July and late August.

This was the second-highest heat-related death toll in Europe after 2022, when heatwaves contributed to more than 60,000 deaths.

The study’s authors pointed out that the actual number of heat-related deaths in 2023 could be higher than reported. Due to the lack of daily mortality data, researchers had to rely on weekly death counts, which may have led to underestimates. They suggested that the true death toll was closer to 58,000.

more:
https://www.independent.co.uk/news/world/europe/europe-heatwave-record-deaths-women-men-b2593957.html
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vox_mundi

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Re: Heatwaves
« Reply #1361 on: August 26, 2024, 05:09:09 PM »
"Dangerous" Heat Envelops Midwest, Including Chicago
https://www.axios.com/2024/08/26/dangerous-heat-wave-midwest-chicago



... At least 11 states are projected to see at least "major" levels of heat risk, as a hot and humid air mass sends heat indices — which measure the combination of heat and humidity, soaring around 105°F to 115°F

https://www.wpc.ncep.noaa.gov/heatrisk/



Public schools are going back into session or have already started for many cities, shining a spotlight on a lack of air conditioning in some school districts.

Typically, heat waves this severe in the Midwest are confined to July into early August, but human-caused climate change has been lengthening the heat season across many parts of the U.S.

... One clue to the heat to come in the Midwest, followed by the Mid-Atlantic and Southeast, is the fact that the source air mass has already crushed heat records from Texas into the Central Plains.

Abilene, Texas, hit its hottest temperature on record, at 113°F, on Aug. 21, as records fell elsewhere across the state as well.

Amarillo, Texas also saw its hottest August temperature, at 108°F, and saw its longest streak of consecutive 100-degree days or above at 10 days.
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

Fiat iustitia, et pereat mundus

kassy

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Re: Heatwaves
« Reply #1362 on: August 26, 2024, 05:16:47 PM »
Experts Concerned as Australia Hits Record-Breaking Heatwave in Winter

It's winter in Australia, but as you've probably noticed, the weather is unusually warm. The top temperatures over large parts of the country this weekend were well above average for this time of year.


The outback town of Oodnadatta in South Australia recorded 38.5°C on Friday and 39.4°C on Saturday – about 16°C above average. Both days were well above the state's previous winter temperature record. In large parts of Australia, the heat is expected to persist into the coming week.

A high pressure system is bringing this unusual heat – and it's hanging around. So temperature records have already fallen and may continue to be broken for some towns in the next few days.

...

The amount of heat plunging into central Australia was particularly unusual, Hines said.


On Friday, temperatures across northern South Australia and southern parts of the Northern Territory were as much as 15°C above average.

Temperatures continued to soar across northern parts of Western Australia over the weekend, with over 40°C recorded at Fitzroy Crossing on Sunday. It has been 2–12°C above average from Townsville all the way down to Melbourne for several days in a row.

more details:
https://www.sciencealert.com/experts-concerned-as-australia-hits-record-breaking-heatwave-in-winter
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Sigmetnow

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Re: Heatwaves
« Reply #1363 on: August 30, 2024, 12:13:02 AM »
Three locations along the Persian Gulf have experienced heat indices of 150°F (65.6°C) or greater in the last 48 hours.
 
A historic heatwave is baking the Middle East.
 
8/27/24, https://x.com/us_stormwatch/status/1828560744700612963
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Paddy

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Re: Heatwaves
« Reply #1364 on: September 03, 2024, 11:40:10 AM »
Record heat this summer in Japan and China

Quote
Japan swelters through hottest summer while parts of China log warmest August on record
Climate scientists have already predicted that 2024 will be the hottest year ever
Justin McCurry in Osaka, Helen Davidson and agencies
Tue 3 Sep 2024 06.11 BST
Share
Japan has recorded its hottest summer on record after a sweltering three months marked by thousands of instances of “extreme heat”, with meteorologists warning that unseasonably high temperatures will continue through the autumn.

The average temperature in June, July and August was 1.76C higher than the average recorded between 1991 and 2020, the Japan meteorological agency said, according to Kyodo news agency.

It was the hottest summer since comparable records were first kept in 1898 and tied the record set in 2023, the agency said. Japan has recorded 8,821 instances of “extreme heat” – a temperature of 35C or higher – so far this year, easily beating the previous record of 6,692 set in 2023, it added.

Unprecedented number of heat records broken around world this year
Read more
The brutal heat was not confined to Japan. Swathes of China logged the hottest August on record, the weather service said.


The hot weather prompted delays to the start of the new school year in some Chinese cities. State media reported on Tuesday that some schools and universities in Jiangxi, Chongqing, and Sichuan provinces had pushed the return to school out to 9 September, citing high temperatures.

China Daily said Chongqing authorities had extended school holidays for all kindergarten, primary and secondary schools, and at least a dozen colleges and universities, “to ensure the safety and health of teachers and students amid the extreme heat”.

A woman fans herself while resting in the shade in an alley during a heatwave in Beijing in June 2023
View image in fullscreen
A woman fans herself while resting in the shade in an alley during a heatwave in Beijing in June 2023. Photograph: Greg Baker/AFP/Getty Images
Chongqing is notoriously hot in summer, but it and other nearby regions including Sichuan have had abnormally high temperatures in recent weeks. A red alert for temperatures exceeding 40 C – the highest of China’s three-tier warning system – was issued for 12 consecutive days from late August until the start of September.


China is the leading emitter of the greenhouse gases that scientists say are driving global climate change.

Beijing has pledged to bring carbon dioxide emissions to a peak by 2030 and to net zero by 2060.

Its weather service said in an article published on Sunday that average air temperatures for August in eight provinces, regions and cities “ranked the hottest for the same period” since records began.

They included the megacity of Shanghai, and the provinces of Jiangsu, Hebei, Hainan, Jilin, Liaoning and Shandong as well as the north-west region of Xinjiang, the weather service said.

A further five provinces chalked up their second-hottest August, while seven more endured their third-hottest.


“Looking back at the past month, most parts of China have experienced a hotter summer than in previous years,” the weather service said.

The major population centres of Shanghai, Hangzhou and Chongqing also saw more “high temperature days” – typically declared when the mercury breaches 35C – than in any August since records began.

Although the heat is expected to recede across much of the north as autumn begins, “it is still too early to end completely”, the weather service said.

Climate scientists have already predicted that 2024 will be the hottest year on record for the Earth because of a warming planet.


The Copernicus Climate Change Service (C3S) said July was the second warmest on record books going back to 1940, only slightly cooler than July 2023.

Extreme heat has seared much of east Asia this summer.

“Throughout the summer, warm air tended to cover the entire country, and from July to August, a Pacific high pressure system mainly covered western Japan, resulting in clear skies and strong sunlight. As a result, the average temperature during the summer was very high nationwide,” the meteorological agency said, according to the Japan Times.

More than 70,000 people were taken to hospital by ambulance suffering from heatstroke between early July and late August in Japan, while consumer spending surged on items such as air conditioners, sweet food and drinks.


Rising global temperatures make extreme weather more frequent and intense, and China has had a summer of extreme weather, from heatwaves across much of the north and west to devastating floods in central and southern regions.

bosbas

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Re: Heatwaves
« Reply #1365 on: September 03, 2024, 10:53:59 PM »
Phoenix 100 consecutive days above 100F... And close to record number of nights above 90F... Too hot for the elderly like me anyway.

https://www.huffpost.com/entry/phoenix-heat-wave-100-degrees_n_66d76441e4b0830f6e928b84

kiwichick16

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Re: Heatwaves
« Reply #1366 on: September 04, 2024, 11:18:27 AM »
@  bosbas   ......they say Canada is nice in the summer........

Sigmetnow

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Re: Heatwaves
« Reply #1367 on: September 04, 2024, 03:43:34 PM »
Edgar McGregor
 
This will be the third once-in-a-century heatwave since 2020 about to crush the Los Angeles Basin.
 
I can't believe we're doing this again.
 
9/3/24, 2:53 PM https://x.com/edgarrmcgregor/status/1831042920415432737

110°F = 43°C
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vox_mundi

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Re: Heatwaves
« Reply #1368 on: September 05, 2024, 12:49:01 AM »
Heat wave scorches Southwest, West as wildfire concerns increase
https://www.axios.com/2024/09/03/heat-wave-west-wildfires



After one of the hottest summers on record, many cities in the Southwest and West are bracing for a significant heat wave beginning Wednesday.

Threat level: A strong heat dome will send temperatures soaring into the 100s°F to 110s°F in Phoenix and Las Vegas, with triple-digit heat also affecting much of inland California.

As of Wednesday morning, 61 million people, from Arizona to nearly the entire state of Washington, were under heat warnings, watches and advisories.

In Phoenix, which had its hottest summer on record, with a three-month average temperature of a staggering 99°F, the city's record-breaking streak of 100-degree days is likely to continue at least into next week.

As of Tuesday, the streak stood at 100 days straight with highs of at least 100°F, the NWS office in Phoenix posted on X. This is by far the longest on record there.

The previous record was 76 straight days, set in 1993.

High temperatures in Phoenix are forecast to range between 106°F to 114°F beginning on Wednesday and lasting into the weekend. Above average temperatures are forecast to continue next week.



https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=AFDPSR&e=202409040858

In Los Angeles, where temperatures downtown are forecast to be in the upper 90s°F on Thursday and Friday, the NWS is warning of "boiler room" temperatures.

For example, Burbank could see highs in the 100s°F through Sunday, according to NWS forecasts.

Excessive heat warnings and heat advisories extend into desert areas of California, where some of the hottest temperatures will be found, northward into the heart of the state's agricultural region, including Sacramento.

Extreme heat is also expected to affect coastal Oregon, from the California border to Portland, along with much of Washington State, including Seattle.

Temperatures in Portland, a city where many lack air conditioning and extreme heat is rare at this time of year, are forecast to reach 15–20 degrees above average on Thursday and Friday, before moderating over the weekend. More heat may be on tap there next week.

According to the NWS, temperatures are expected to peak in the upper 90s°F to low 100s°F inland and soar into the mid-to-upper 80s°F along the Oregon coast. In fact, there is a 50% to 80% chance that temperatures will reach or exceed 100°F in the Willamette Valley on Friday, the NWS noted.

https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=AFDPQR&e=202409041049

Heat waves are becoming more common, intense and longer-lasting due to human-caused global warming.

While the most intense period of this upcoming heat wave may wane by early next week, longer-range outlooks show the likelihood for more heat events through September.
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

Fiat iustitia, et pereat mundus

kassy

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Re: Heatwaves
« Reply #1369 on: October 31, 2024, 07:57:38 PM »
More than half of European heat-related deaths in summer 2022 attributed to anthropogenic warming

The unprecedented temperatures in the summer of 2022 caused more than 68,000 deaths on the continent, according to astudy by the Barcelona Institute for Global Health (ISGlobal), a centre supported by the 'la Caixa' Foundation. A new study has now found that more than half -- 56% -- of the heat-related deaths in the summer of 2022 were related to human-induced climate change. According to the research, 38,154 of the 68,593 heat-related deaths in the summer of 2022 would not have occurred without anthropogenic warming.

The starting point was previous research in which, using temperature and mortality records from 35 European countries, epidemiological models were fitted to estimate heat-related mortality in the summer 2022. Using a dataset of global mean surface temperature anomalies between 1880 and 2022, they estimated the increase in temperatures due to anthropogenic warming for every region. They then subtracted those increases from the recorded temperatures to obtain an estimate of what temperatures would have been in the absence of anthropogenic warming. Finally, using the model developed in the first study, they estimated mortality for a hypothetical scenario where those temperatures would have occurred.

The results, published in npj Climate and Atmospheric Science, showed that the number of heat-related deaths per million inhabitants attributed to anthropogenic warming was twice as high in the Southern regions compared to the rest of Europe.

...

https://www.sciencedaily.com/releases/2024/10/241029121051.htm
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vox_mundi

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Re: Heatwaves
« Reply #1370 on: November 26, 2024, 10:28:41 PM »
Unexplained Heat-Wave 'Hotspots' Are Popping Up Across the Globe
https://phys.org/news/2024-11-unexplained-hotspots-globe.html



Earth's hottest recorded year was 2023, at 2.12°F above the 20th-century average. This surpassed the previous record set in 2016. So far, the 10 hottest yearly average temperatures have occurred in the past decade. And, with the hottest summer and hottest single day, 2024 is on track to set yet another record.

All this may not be breaking news to everyone, but amid this upward march in average temperatures, a striking new phenomenon is emerging: distinct regions are seeing repeated heat waves that are so extreme, they fall far beyond what any model of global warming can predict or explain.

A new study published in the Proceedings of the National Academy of Sciences provides the first worldwide map of such regions, which show up on every continent except Antarctica like giant, angry skin blotches. In recent years these heat waves have killed tens of thousands of people, withered crops and forests, and sparked devastating wildfires.

"The large and unexpected margins by which recent regional-scale extremes have broken earlier records have raised questions about the degree to which climate models can provide adequate estimates of relations between global mean temperature changes and regional climate risks," says the study.

"This is about extreme trends that are the outcome of physical interactions we might not completely understand," said lead author Kai Kornhuber, an adjunct scientist at the Columbia Climate School's Lamont-Doherty Earth Observatory. "These regions become temporary hothouses."

These extreme heat waves have been hitting predominantly in the last five years or so, though some occurred in the early 2000s or before. The most hard-hit regions include populous central China, Japan, Korea, the Arabian peninsula, eastern Australia and scattered parts of Africa.

Others include Canada's Northwest Territories and its High Arctic islands, northern Greenland, the southern end of South America and scattered patches of Siberia. Areas of Texas and New Mexico appear on the map, though they are not at the most extreme end.



According to the report, the most intense and consistent signal comes from northwestern Europe, where sequences of heat waves contributed to some 60,000 deaths in 2022 and 47,000 deaths in 2023. These occurred across Germany, France, the United Kingdom, the Netherlands and other countries. The outbreaks have continued; as recently as this September, new maximum temperature records were set in Austria, France, Hungary, Slovenia, Norway and Sweden.

Climbing overall temperatures make heat waves more likely in many cases, but the causes of the extreme heat outbreaks are not entirely clear. In Europe and Russia, an earlier study led by Kornhuber blamed heat waves and droughts on wobbles in the jet stream, a fast-moving river of air that continuously circles the northern hemisphere.

Hemmed in by historically frigid temperatures in the far north and much warmer ones further south, the jet stream generally confines itself to a narrow band. But the Arctic is warming on average far more quickly than most other parts of the Earth, and this appears to be destabilizing the jet stream, causing it to develop so-called Rossby waves, which suck hot air from the south and park it in temperate regions that normally do not see extreme heat for days or weeks at a time

"Due to their unprecedented nature, these heat waves are usually linked to very severe health impacts, and can be disastrous for agriculture, vegetation and infrastructure," said Kornhuber. "We're not built for them, and we might not be able to adapt fast enough."

Kai Kornhuber et al, Global emergence of regional heatwave hotspots outpaces climate model simulations, Proceedings of the National Academy of Sciences (2024)
https://www.pnas.org/doi/10.1073/pnas.2411258121

--------------------------------------------------------

Extreme Heat Disproportionately Exacerbates Health Issues by Threatening Fresh Food Supply
https://www.nature.com/articles/s41558-024-02172-2

Record-breaking temperatures pose critical risks to the global food supply, particularly endangering fresh produce. Urgent enhancements in food safety measures, including re-evaluating the impact of food production, improving cold chain logistics and adapting dietary practices, are required to ensure the resilience of food systems and public health.
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

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opensheart

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Re: Heatwaves
« Reply #1371 on: November 27, 2024, 05:31:44 PM »
The England-France hotspot is most interesting.
Is that not the same area that would drop the most if the AMOC were to shutdown?

Over the long haul, in a bigger picture,
if this area heats up the most,
and then cools down the most,
Could this be an indication of the global system going erratic before it snaps to a new climate regime.
Perhaps the primary signal before the snap.

opensheart

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Re: Heatwaves
« Reply #1372 on: November 27, 2024, 05:36:32 PM »
It is also interesting that the 'Warm Arctic, Cold Continents" concept
applies more to Siberia (right up to the arctic coast) than to Northern Canada.

Instead there is a cold spot in the center of the North American continent well away from any coast.

vox_mundi

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Re: Heatwaves
« Reply #1373 on: November 27, 2024, 06:08:08 PM »
Quote from: opensheart
... Could this be an indication of the global system going erratic before it snaps to a new climate regime.

Perhaps the primary signal before the snap.

It's all a great heat engine ...

As you say, oscillation is characteristic of a chaotic system before it reaches it's tipping point.

This is noted in another recent study ...

In a new study published in Science Advances, NOAA and partner researchers project an increase in the variability of Atlantic tropical cyclone activity, leading to more active and inactive hurricane seasons and fewer near-normal seasons.

The results show both unusually active and inactive hurricane seasons have become more common since the 1990s, and computer models predict that by the middle of this century, the variability could increase by an additional 36%, with the biggest increase expected to occur in the central tropical North Atlantic, which refers to the mid-section of the North Atlantic Ocean where tropical storms and hurricanes most frequently form.

"The historical year-to-year variability in hurricane seasons is much larger than any projected future trends in hurricane activity," said Hosmay Lopez, Ph.D., NOAA oceanographer and lead author of the new study. "While the scientific consensus is for a future reduction of two storms per year, the number of named storms in the North Atlantic revealed much larger swings between 28 named storms in 2005 and eight in 2014.

The study also found that while the total number of hurricanes in a given season, averaged over many years, should not change much, the likelihood of extremely active seasons will increase due to a projected increase in the year-to-year variations.

Larger year-to-year swings between busy and quiet hurricane seasons in the North Atlantic pose significant challenges for forecasters and emergency decision makers. The variability from one season to the next makes it more difficult for scientists to predict the severity of any given hurricane season.

Additionally, the unpredictability of active vs. inactive seasons creates challenges for disaster preparedness and response since some seasons will be extremely dangerous while others will be relatively quiet.

 Hosmay Lopez et al, Projected increase in the frequency of extremely active Atlantic hurricane seasons, Science Advances (2024)
https://www.science.org/doi/10.1126/sciadv.adq7856
There are 3 classes of people: those who see. Those who see when they are shown. Those who do not see

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HapHazard

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Re: Heatwaves
« Reply #1374 on: November 27, 2024, 09:10:57 PM »
Like a spinning top slowing down.
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Rodius

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Re: Heatwaves
« Reply #1375 on: November 28, 2024, 01:21:31 AM »
The more the climate changes, the more difficult predictions will become.

All the research and findings on the climate were done in a different climate system that was stable.

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Re: Heatwaves
« Reply #1376 on: December 13, 2024, 08:38:23 PM »
Single heat wave wiped out millions of Alaska's dominant seabird
Agence France-Presse


The common murre, a large black-and-white seabird native to northern waters, has become far less common in Alaska over the past decade due to the impacts of climate change.

A study published Thursday in Science reveals that a record-breaking marine heat wave in the northeast Pacific from 2014 to 2016 triggered a catastrophic population collapse, wiping out four million birds -- about half the species in the region.

Strikingly, they have shown little signs of rebounding, suggesting long-term shifts in the food web that have locked the ecosystem into a troubling new equilibrium.

"There's a lot of talk about declines of species that are tied to changes in temperature, but in this case, it was not a long term result," lead author Heather Renner of the Alaska Maritime National Wildlife Refuge told AFP.

"To our knowledge, this is the largest mortality event of any wildlife species reported during the modern era," she and her colleagues emphasized in their paper.

The finding triggers "alarm bells," Renner said in an interview, as human-caused climate change makes heat waves more frequent, intense, and longer-lasting.

- Emaciated Carcasses -

With their dapper, tuxedoed look, common murres are sometimes called the "penguins of the north."

Their slender wings power them across vast distances in search of food and make them expert divers. But even these hardy seabirds were no match for an unprecedented environmental catastrophe.

The largest marine heat wave ever recorded began in the late fall of 2014, spanning a massive swath of the northeast Pacific Ocean from California to Alaska.

It persisted for over two years, leaving devastation in its wake. During this time, some 62,000 emaciated murres washed ashore along the North American Pacific coastline -- dead or dying from starvation.

Experts point to two key reasons for the bird deaths: elevated ocean temperatures reduced both the quality and quantity of phytoplankton, impacting fish like herring, sardines, and anchovies -- the mainstay of the murre diet.

At the same time, warmer waters increased the energy demands of larger fish, such as salmon and Pacific cod, which compete with murres for the same prey.

"We knew then it was a big deal, but unfortunately, we couldn't really quantify the effects," explained Renner.

For years after the event, breeding colonies failed to produce chicks, complicating efforts to assess the full impact.

Earlier estimates pegged the number of deaths at around a million, but a more robust analysis -- drawing on data from 13 murre colonies -- revealed the toll was four times higher.

"It is just so much worse than we thought it was," Renner said of the new findings.
(more)

https://www.rawstory.com/single-heat-wave-wiped-out-millions-of-alaska-s-dominant-seabird/
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Renerpho

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Re: Heatwaves
« Reply #1377 on: December 15, 2024, 07:11:37 AM »
Single heat wave wiped out millions of Alaska's dominant seabird

Rawstory forgot to include a link to the paper: https://www.science.org/doi/abs/10.1126/science.adq4330
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