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Tor Bejnar

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Re: Heatwaves
« Reply #450 on: June 25, 2020, 04:37:07 AM »
I regularly experience a heat wave here in north Florida, then discover my wife turned off the A/C (hours earlier).  When it reaches about 80F (that's what the thermostat says) (OK, 26.7C) I start feeling hot so I turn on the ceiling fan in the office (which is now my state job office).  Then she gets too hot so the A/C goes back on.  It's nice to have options!
Arctic ice is healthy for children and other living things.

interstitial

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Re: Heatwaves
« Reply #451 on: June 25, 2020, 05:54:19 AM »
Cooling the house when its hot outside takes more energy then maintaining a cooler temperature. Hopefully you can find a temperature you can both agree on.

oren

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Re: Heatwaves
« Reply #452 on: June 25, 2020, 06:50:04 AM »
What site provides this particular graphic? I like it.
Never mind, found it on one of my favorite sites.
https://www.ogimet.com/cgi-bin/ogimet_nav?lang=en

vox_mundi

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Re: Heatwaves
« Reply #453 on: July 08, 2020, 12:16:04 AM »
Heat Will Stay Stuck On Extra High for July in Most of US
https://phys.org/news/2020-07-stuck-extra-high-july.html

... The National Weather Service warned of excessive heat on Tuesday for 18 million people, but that's nothing compared to what's coming up.

At the end of this week, much of the nation will likely be passing or flirting with temperatures in the 90s. And it will likely feel even hotter in the South.

Charleston, South Carolina, likely will feel 105 on Friday and then 108 on Saturday. Little Rock is forecast to feel like 107 and 109 on Friday and Saturday. Houston should feel like 109 Friday through Sunday. Phoenix is forecast to feel like 108 on Friday and 110 on Saturday and Sunday.

Then it goes up a notch more.

Next week, while close to two-thirds of the country will be warmer than normal, about 40% of the Lower 48 has a moderate risk of extreme and dangerous heat, said Climate Prediction Center meteorologist Matthew Rosencrans.

Next week, Wisconsin could be battling it out with the Southeast for the nation's hottest feels-like temperature—which factors in humidity—with heat indices pushing past 100, Rosencrans said. And the worst prolonged heat looks to be around western Nebraska, Oklahoma and the Texas panhandle, with temperatures approaching 110, but without the sticky humidity.

... In Miami, which has experienced its hottest stretch on record, an unusually hot Atlantic Ocean is adding to the problem, not allowing it to cool below 80 at night, said Ryan Maue, a private meteorologist for BAM forecasts.

Masters said there's "very toasty water pretty much everywhere," except near Greenland.

So what about relief? When do long-term forecast computer models show below-normal temperatures for significant parts of the country?

Masters scrolled through the simulations. Not the rest of July. Not August. Not September. Not October. Not November.



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Sigmetnow

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Re: Heatwaves
« Reply #454 on: July 10, 2020, 03:30:15 PM »
U.S.
Weekend weather: A rare heat wave event is forecast this weekend, the National Weather Service says
Quote
Parts of the southwestern United States are under an excessive heat warning going into this weekend. Temperatures are forecast to reach as high as 120 degrees Fahrenheit [49°C] in some areas, and officials are urging people to take precautions as heat this high can turn deadly.
...
The National Weather Service uses different criteria for heat advisories in different parts of the country. An excessive heat warning indicates unusually high temperatures that could pose considerable health risks.

In the southwest, "we use what we call a heat risk," said Marvin Percha, National Weather Service meteorologist. This is different from other areas of the country where heat indexes take a bigger importance in heat warnings.

"We look at how rare the event is and compare what's normal," Percha said. "Considering the temperatures we have forecast now, we're looking at a pretty rare event."


Heat in Phoenix this weekend could break daily records. Phoenix's expected high of 117 on Sunday would beat the daily record for July 12 of 115, set in 2009. Heat in California and Nevada will come close to records, but not quite meet them.

High heat is seasonally appropriate for the region, just usually not so high for so long.

Friday marks the 107-year anniversary of the hottest day ever recorded on earth, when Death Valley hit 134 degrees Fahrenheit, said CNN meteorologist Pedram Javaheri. ...
https://www.cnn.com/2020/07/10/weather/southwest-record-high-temps-arizona-california-forecast/index.html
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Sigmetnow

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Re: Heatwaves
« Reply #455 on: July 11, 2020, 10:09:29 PM »
Oklahoma.  Central U.S.
Quote
SPIA® Index (@SPIAindex) 7/11/20, 3:39 PM
Holy Moley folks. Be very, very careful with this heat today. Dangerous conditions, both with standard Heat Index Temps, and with Wet Bulb Globe Temps. Graphics per @okmesonet
https://twitter.com/spiaindex/status/1282036728690335744
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Sigmetnow

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Re: Heatwaves
« Reply #456 on: July 19, 2020, 01:46:44 AM »
Quote
Greg Carbin (@GCarbin) 7/18/20, 6:00 PM
Following on the earlier post, this looks at the total US population to experience at least 3 hours with a Heat Index >= 100F [37.8°C] today through early Sunday. I was surprised to see at least 24% of US pop will meet this criteria! #PlayingWithData #heatwave
https://twitter.com/gcarbin/status/1284609045312286721 
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grixm

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Re: Heatwaves
« Reply #457 on: July 27, 2020, 07:03:28 PM »
Extremely hot weather is forecast in the middle east over the next few days. Over 53 C several places in Iraq and near Kuwait and Iran.

For reference the all-time record for Iraq is 53.8 C. Iran 54 C and Kuwait 53.9 C.

glennbuck

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Re: Heatwaves
« Reply #458 on: July 30, 2020, 01:08:26 PM »
Tuesday's preliminary high of 125.2 degrees (51.8 Celsius) in Baghdad shatters the Iraqi capital's previous record of 123.8 degrees set on July 30, 2015, for any day of the year.

https://www.nationthailand.com/edandtech/30392138

vox_mundi

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Re: Heatwaves
« Reply #459 on: July 31, 2020, 09:53:10 PM »
Spain Sets Temperature Records, UK Sees Hottest Day of 2020
https://phys.org/news/2020-07-spain-temperature-uk-hottest-day.html

San Sebastian on Spain's northern coast witnessed 42 degrees Celsius (107 degrees Fahrenheit) on Thursday—the hottest temperature there since records began in 1955, the national weather agency said.

The city of Palma, on Spain's Mediterranean island of Mallorca, set a local record of 40.6 degrees Celsius (105 degrees Fahrenheit) on Tuesday.

... To the north, U.K. residents sought shade as temperatures rose above 37 degrees Celsius. National weather agency the Met Office said a reading of 37.8 degrees Celsius—100 degrees Fahrenheit—was recorded at Heathrow Airport west of London. That made Friday the hottest day of 2020 and the third-hottest on record.

From Britain to Italy, temperatures around 40 degrees Celsius (104 Fahrenheit) made face masks almost unbearable for many, as more cities begin requiring them outdoors to prevent surges in COVID-19 cases.

Austria and Bulgaria also reported their hottest day yet this year, with Vienna topping 37 degrees before a summer storm brought some relief.

France swelters under heatwave, putting firefighters on alert
https://phys.org/news/2020-07-france-swelters-heatwave-firefighters.html

Around one-third of the country's 101 departments were on high alert, with Paris forecast to reach 40 degrees Celsius (104 Fahrenheit) in the shade after several cities hit record highs Thursday.

Authorities in the capital imposed driving restrictions to limit ozone pollution as tens of thousands of Parisiens prepared to flee to cooler climes, according to the nation's traffic surveillance agency.

The Meteo France weather agency said that storms could bring relief late Friday in central France. Night temperatures elsewhere are likely to stay high, falling to just 25 Celsius (77 Fahrenheit) in cities like Lyon or Grenoble.

Last year was France's hottest on record, and Meteo France has warned that global warming could double the number of heatwaves by 2050.
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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

ArcticMelt2

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Re: Heatwaves
« Reply #460 on: July 31, 2020, 10:20:09 PM »
https://twitter.com/Ketil_Isaksen/status/1289234856967204864

Quote
The 2020 high #Arctic #Svalbard five days #heatwave in a long-term (1899 - present) context...


Niall Dollard

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Re: Heatwaves
« Reply #461 on: August 02, 2020, 02:29:54 PM »
Start of a new month and still record temperatures in northern Russia.

25.0 C max at Cape Sterlegova on the edge of the Kara Sea at 75.41 North.

This ties the August heat record at the station, set on 3rd August 1962.

vox_mundi

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Re: Heatwaves
« Reply #462 on: August 13, 2020, 06:29:52 PM »
Remember the Heat In Baghdad? It’s Even Hotter.
https://www.washingtonpost.com/world/2020/08/12/baghdad-iraq-heat-climate-change

“Iraq isn’t just hot. It’s punishingly hot. Record-breakingly hot,” so writes WaPo’s Louisa Loveluck and Chris Mooney in this “troubling snapshot of the future” detailing how climate change is turning the frying pan into a fire. “Baghdad hit 125.2 degrees on July 28, blowing past the previous record of 123.8 degrees — which was set here five years ago — and topping 120 degrees for four days in a row.”

On Tuesday, the temperature reached 51.8C (125°F) at Baghdad in Iraq, setting a new record for the city. There were also reports of higher temperatures in other parts of the Middle East during the first half of this week. ... According to the World Meteorological Organisation, the highest temperature on record for the Asia region was 53.9C (129°F) at Mitribah, Kuwait on July 21, 2016.

... What does 125 degrees feel like? “The suitcase crackled as it was unzipped. It turned out that the synthetic fibers of a headscarf had melted crispy and were now stuck to the top of the case. A cold bottle of water was suddenly warm to the lips. At our office, the door handle was so hot it left blisters at the touch.” If the world doesn’t change its climate-changing habits, by 2050 Phoenix, Ariz., could be as hot as Baghdad, according to one study. (Last month, NBC News reported the “feels like” temp reached 159 degrees.)

What is life like? Street vendors can’t sell their goods. The power grid is straining. Farmers are losing crops. Most citizens can’t afford a generator to keep cool. And already-deadly protests are getting worse. “The heat is ruining livelihoods, and power cuts have been compounding a sense of misery so deep that protesters are streaming into the streets to demand better services, even risking the threat of live ammunition from ill-disciplined security forces.”

“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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

vox_mundi

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Re: Heatwaves
« Reply #463 on: August 15, 2020, 12:20:26 PM »
Sweltering Heat is Shattering Records, Triggering Power Outages Across California
https://www.nbcnews.com/news/amp/ncna1236775



An intense multi-day heatwave kicked into high gear Friday, triggering power outages throughout California as the state's power grid became overwhelmed by energy demands.

Rolling blackouts could affect up to 250,000 homes and businesses in the state. Such a power cut has not been implemented since 2001, when there was a massive electric crisis 

Across the country, some 150 million people are set to experience temperatures hotter than 90 degrees over the next week, and 50 million of those forecast to experience temperatures over 100 degrees.

For the Plains, high temperatures were forecast to be 100 to 107 degrees, and heat index values 105-115 degrees. This heat is forecast to last through Sunday with cooler temperatures expected next week.

For the West, an excessive heat warning is in effect until Wednesday for parts of Arizona, California and Nevada, with high temperatures expected to reach 110-125 degrees.


Needles, California

"The longevity of the heat is more concerning than the record-breaking temperatures," said National Weather Service meteorologist Trevor Boucher.

The monthly heat records are especially notable. Death Valley, California, is forecast to get above 125 degrees Sunday through Tuesday, and if it does, it will be the hottest temperatures on record so late in the season.

If Phoenix reaches 117 that would match the all-time hottest temperature recorded during the month of August.

https://twitter.com/i/status/1294275589487067139

... “With COVID-19 and other crises layered on top of each other, an additional extreme weather crisis basically just compounds the stress that people are already feeling,” Gershunov said.

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


California Heat Wave May Rival Deadly July 2006 Event, Forecasters Warn
https://www.latimes.com/california/story/2020-08-14/california-heat-wave-records?_amp=true

Valleys in the Los Angeles region can expect highs of 100 to 108 degrees, with lows of 72 to 82. Elevations below 5,000 feet will see highs of 98 to 105 and lows of 65 to 75. High temperatures will be 102 to 112 in the Antelope Valley, with lows from 70 to 80. Coastal areas can look for highs of 82 to 92 and lows of 65 to 70.

The excessive heat is the result of a large, strong high-pressure system centered over Arizona, which is keeping the Southwestern U.S. hot almost everywhere except within a few miles of the coast.

High pressure over southwestern California on Tuesday will reach a strength that occurs only about once every 10 years, said Eric Boldt, a meteorologist with the National Weather Service in Oxnard. This dome of high-pressure air blocks storm systems and creates the building heat over the Southwest.

It was during the deadly 2006 heat wave that Los Angeles County recorded its all-time highest temperature: 119 degrees in Woodland Hills on July 22.

The Times reported that coroners in Los Angeles, San Bernardino and Kern counties connected about 130 deaths to the heat, with diagnoses including hyperthermia and heatstroke. But state researchers later estimated that the toll in those counties was more likely in the range of 350 to 450
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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

Bruce Steele

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Re: Heatwaves
« Reply #464 on: August 15, 2020, 05:02:36 PM »
Voxmundi, It isn’t like high pressure heat here in So Cal. We have high clouds and it sprinkled a little this morning, nothing measurable really, and we had a few sprinkles yesterday also. There was even a little thunder and a small fire in Oceano from a lightning strike. Humidity 55-65 and 100 degrees two days running.
 The pigs are especially sensitive to heat so I still spend several hours out in the heat checking on them keeping the wallows full and watching for stress.  It’s squash season so I loaded and hauled 1500 lbs. yesterday.  At least it cools down nicely every night. The swallows have fledged their young and flown back south already so no colony crashes this year. The field corn is drying in the sun, the wheat is about half done harvesting, and the black eyed beans are finishing up and starting to dry. The summer garden is done and when it cools down it is time to plant a winter garden.
 The powerwalls can’t keep up with my A/C so this is the only time of year that I pull off the grid. Still maintain 14.7kw in storage in case of a power failure. The solar carries most all the daytime load but doesn’t make enough to charge the batteries and get through the nighttime hours. Only like this a few days per year where I am using grid power.
 

kassy

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Re: Heatwaves
« Reply #465 on: August 15, 2020, 05:29:25 PM »
So theoretically if you would want to fix that how much more powerwall would you need, or how much more added solar?
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

Bruce Steele

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Re: Heatwaves
« Reply #466 on: August 15, 2020, 06:32:12 PM »
Kassy, Powerwall keeps track of my power use. So my use for this year to date
6038 kWh from solar
1897 kWh from powerwall
248 kWh from grid
1617 kWh to grid

Powerwall always holds 14.7 kWh in reserve for blackouts.

So I don’t have much of a problem and the cost of properly insulating my house is prohibitive.
Manufactured house with 3.5 inch walls. I could probably retreat to one room with a small A/C when temp exceeds 100F and avoid expensive fixes.

oren

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Re: Heatwaves
« Reply #467 on: August 15, 2020, 06:45:59 PM »
Great stats Bruce, happy it works for you.

Bruce Steele

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Re: Heatwaves
« Reply #468 on: August 15, 2020, 08:35:01 PM »
It seems like a lot of energy use but it includes my farm business and eight chest freezers. We had some dry lightning that knocked out the power this morning so I am 100% solar / powerwall . Those freezers are running on solar right now . Kinda cloudy so solar is producing 2.5 to 3.5 kWh, the freezers and small household use is about .7 kWh . My powerwalls are charging on what is left over.
 So A/C gets turned off and we hope it doesn’t push 100 today. The power switch to powerwall with the power outage is so seamless it doesn’t even trigger surge alarms.
 Heatwaves in Calif. result in lots of extra strain on the grid and power outages aren’t uncommon so the battery backup is my insurance against potentially loosing >$10,000 of inventory.  I can start a generator if I have to but the batteries will kick in even if I am not home.

vox_mundi

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Re: Heatwaves
« Reply #469 on: August 16, 2020, 08:58:18 AM »
Quote from: Bruce Steele
... Humidity 55-65 and 100 degrees two days running.

Bruce, that sounds brutal. Definitely not a 'dry heat'

We had a week of mid-90s with 60% humidity here and it was unbearable. Air quality alerts everyday.

Stay cool

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

https://www.cbsnews.com/amp/news/heat-wave-western-united-states/

On Friday the heat will stretch from Texas, where highs will be around 105 in various parts of the state, up through the valleys of California, also near 105.





In Phoenix, which has already eclipsed its record for the most days above 110 degrees of any summer on record, highs are expected to top that number every day from Friday through at least next Thursday. In fact, a daily record high temperature is in jeopardy of being topped every day from Saturday through Wednesday.

Overall, Phoenix is having its hottest summer on record.



Partly due to a lack of the wet El Niño and instead a developing drier La Niña, this summer the monsoon has failed in Phoenix. The city is registering its driest atmosphere in the 20 years this particular record has been kept. In a feedback loop, dry air and sun leads to hotter temperatures, which leads to drier air.



... Statistically speaking, the core of the heat dome is forecast to intensify to 3 standard deviations above the mean, meaning it will be more intense than 99.8% of such events in the history of that area.

... The climate is warming in the deep Southwest faster than any other area of the lower 48 states. Since 1970, average temperatures there have risen by 4 to 6 degrees Fahrenheit. This helps explain why, even though there's still more than a month to go in summer, Phoenix has already shattered its record number of 110+ degree days.
« Last Edit: August 16, 2020, 09:05:49 AM by vox_mundi »
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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

glennbuck

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Re: Heatwaves
« Reply #470 on: August 16, 2020, 12:42:22 PM »
I don’t usually write two weather posts in one week, but this time I’ll make an exception. Earlier this week, I wrote about a “sustained warming trend and long-duration inland heatwave” that would develop this week in California. Well, that’s still true…but that language turns out to have been more than a little understated. A very intense and prolonged heatwave now appears likely for a large portion of California over the next 7-10 days, and this event will likely have wide-ranging impacts from human health, wildfire, and electricity demand perspectives. I suspect this event will probably end up being one of the most significant widespread California extreme heat events in the past decade, if not longer.

https://weatherwest.com/archives/7427
« Last Edit: August 16, 2020, 01:19:43 PM by glennbuck »

Sigmetnow

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Re: Heatwaves
« Reply #471 on: August 16, 2020, 03:13:23 PM »
Worst heat wave in years creates dangers across California
Quote
New rolling blackouts in parts of California were ordered Saturday night as power shortages continued because of an extreme heat wave.

Pacific Gas & Electric Co. said Saturday night it was beginning to rotate power outages affecting up to 250,000 customers in Northern and Central California. San Diego Gas & Electric said it also interrupted power to some customers but had restored all service by 7 p.m.

The Los Angeles Department of Water and Power said that 3,800 customers were without power late Saturday in the San Fernando Valley and that it could be four to 12 hours before electricity is restored. The affected areas include West Hills, Arleta, Granada Hills and Studio City.

Southern California Edison issued a warning to customers that rotating power outages might be called in its Los Angeles County service area through midnight. It said outages could last up to one hour.

Earlier in the day, state regulators said they had expected to avoid further power interruptions through the weekend after some blackouts Friday.

The broiling conditions that began Friday may rival the deadly seven-day heat event of July 2006, the National Weather Service said.

The valleys, mountains and deserts of Southern California are likely to see both daytime and nighttime temperatures challenge records through at least Thursday, and elevated humidity will make conditions feel 2 to 5 degrees warmer during the day. ...
https://www.latimes.com/california/story/2020-08-15/worst-heat-wave-in-years-causes-rolling-blackouts-dangerous-conditions-across-california
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Sigmetnow

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Re: Heatwaves
« Reply #472 on: August 17, 2020, 02:12:47 PM »
'Hottest temperature on Earth' as Death Valley, US hits 130°F / 54.4°C
Quote
What could be the highest temperature ever reliably recorded on Earth - 130F (54.4C) - may have been reached in Death Valley National Park, California.

The recording is being verified by the US National Weather Service. ...
https://www.bbc.com/news/world-us-canada-53788018
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Sigmetnow

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Re: Heatwaves
« Reply #473 on: September 03, 2020, 04:44:25 PM »
This is a big end-of-summer holiday in the U.S., usually including outdoor activities.

Dangerous heat wave is expected to hit the U.S. West Coast over Labor Day weekend
Quote
Fourty-three million people across much of California, southern Nevada and western Arizona are already under an excessive heat watch, and that number is expected to rise.

Forecasters warn that this heat wave has the potential to break all-time high temperature records for the region. National Weather Service Los Angeles suggested that "all daytime outdoor activities should be limited or canceled." ...
https://www.cnn.com/2020/09/02/weather/california-west-heat-wave-trnd/index.html
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vox_mundi

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Re: Heatwaves
« Reply #474 on: September 06, 2020, 11:26:07 AM »
California Grid Operator Warns of Rotating Power Outages in Record Heat Wave
https://news.trust.org/item/20200906022155-95z56

Sept 5 (Reuters) - The California Independent System Operator (ISO) declared a "Stage 2" power emergency late on Saturday, warning that rotating power outages were possible amid a record heat wave.

... Temperatures of up to 125 degrees Fahrenheit (49 Celsius) were set to punish California through the Labor Day weekend, raising the risk of wildfires and rolling blackouts.

... The National Weather Service (NWS) forecast a heat wave carrying "rare, dangerous and very possibly fatal" temperatures across Southern California for the holiday weekend.

This weekend was expected to be hotter than the one in mid-August that helped trigger the second- and third-largest forest fires in California history. Those fires are still burning.

San Francisco-based power provider PG&E Corp said on Saturday that it may be asked by the grid operator to turn off power due to the "extreme heat." It urged customers to conserve power.

The company said it may have to cut power early on Monday and Tuesday in parts of Northern California as hot, dry winds are expected to threaten the region.

PG&E said its potential power shut-offs may impact parts of 17 counties, which would include about 103,000 customers.
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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

vox_mundi

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Re: Heatwaves
« Reply #475 on: September 06, 2020, 06:13:09 PM »


Saturday, Denver hit 101 degrees, its highest September temperature and the latest on record it has crossed the century mark. Nearby Boulder hit 99, its hottest temperature so late in the year.

On Tuesday, both Denver and Boulder are expecting SNOW.
  :o
https://www.washingtonpost.com/weather/2020/09/04/colorado-temperature-swing-snow/?itid=lk_inline_manual_45

« Last Edit: September 06, 2020, 11:31:00 PM by vox_mundi »
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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

vox_mundi

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Re: Heatwaves
« Reply #476 on: September 06, 2020, 11:32:37 PM »
In Woodland Hills, the mercury climbed to 117 degrees by 3 p.m. Saturday, making it the hottest day ever recorded there in September, breaking the record of 115 set in 1979. Burbank reached 113, tying its monthly record set in 1971. Van Nuys hit 115.

The mercury soared even higher to the east, with Palm Springs hitting 122 and Indio 121. Officials said at least three areas tied or topped all-time record highs: Alpine (113), El Cajon (114) and Idyllwild (103). The weather service said Burbank appeared to tie an all-time record at 114 degrees.

Temperatures were expected to climb even higher in some places Sunday, reaching 119 degrees in Woodland Hills, 114 in Pasadena and 110 in Simi Valley, said David Sweet, a meteorologist with the National Weather Service in Oxnard.

In its heat warning statement, the NWS said: “These highs ... will be about 15-25 [degrees] above normal across the region. This kind of heat can be life-threatening.

Altogether, the West could set more than 100 record high minimum temperatures and more than 150 record high temperatures, which could prove dangerous for a lot of people.

"Many are surprised to learn that heat is the deadliest of weather events. In fact, heat kills nearly twice as many Americans each year than do tornadoes and nearly three times more than hurricanes," Javaheri says.

Heat will also be a problem in the Deep South, where temperatures have been in the 90s, with heat indexes in the triple digits.

Southwest Louisiana and East Texas, which were both hit hard by Hurricane Laura, still have thousands of residents without power. This only makes the heat even more dangerous.

https://amp.cnn.com/cnn/2020/09/05/weather/holiday-weekend-heat-forecast-saturday/index.html
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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

Stephen

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Re: Heatwaves
« Reply #477 on: September 07, 2020, 01:00:19 AM »
For those of us in the rest of world...

In Woodland Hills, the mercury climbed to 47C degrees by 3 p.m. Saturday, making it the hottest day ever recorded there in September, breaking the record of 46C set in 1979. .....


The mercury soared even higher to the east, with Palm Springs hitting 50C ....

....

The ice was here, the ice was there,   
The ice was all around:
It crack'd and growl'd, and roar'd and howl'd,   
Like noises in a swound!
  Rime of the Ancient Mariner by Samuel Taylor Coleridge

vox_mundi

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Re: Heatwaves
« Reply #478 on: September 07, 2020, 01:05:22 AM »
Thank you, Stephen.

My mind only does metric in the lab.  :-\
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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

vox_mundi

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Re: Heatwaves
« Reply #479 on: September 07, 2020, 01:27:52 AM »
... life finds a way ...

New Species of Freshwater Crustacea Found in the Hottest Place on Earth
https://www.eurekalert.org/pub_releases/2020-09/tfg-nso090320.php

A new species of freshwater Crustacea has been discovered during an expedition of the desert Lut, known as the hottest place on Earth.

... Dr Schwentner, who has worked with similar crustaceans from the Australian deserts in the past, adds: "These Crustaceans are able to survive for decades in the dried-out sediment and will hatch in an upcoming wet season, when the aquatic habitat refills. They are perfectly adapted to live in deserts environments. Their ability to survive even in the Lut desert highlights their resilience."

The Lut desert - also known as Dasht-e Lut - is the second largest desert in Iran.

Located between 33° and 28° parallels and with its 51,800 km2 larger than Switzerland, this desert holds the current record for the highest ever-recorded surface temperature. Based on 2006 satellite measurements, the NASA reported a record surface temperature of 70.7°C, which more recently has been increased to even 80.3°C (176°F). Dark pebbles that heat up are one of the causes of these record temperatures. Mean daily temperatures range from -2.6°C in winter to 50.4°C in summer with annual precipitation not exceeding 30 mm per year.
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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

Juan C. García

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Re: Heatwaves
« Reply #480 on: September 07, 2020, 06:22:57 AM »
Quote
Heat Wave Roasts Southern California With Record of 121 Degrees

Los Angeles County set a new high temperature as a cooling sea breeze remained trapped offshore, according to the National Weather Service.

Scorching temperatures continued to bake Southern California on Sunday, with a record of 121 degrees set in Los Angeles County and at least one death, a 41-year-old hiker, suspected to be related to the heat.

The record 121-degree reading, in Woodland Hills in the San Fernando Valley, northwest of downtown Los Angeles, eclipsed a record of 119, set in July 2006, according to Dave Bruno, a meteorologist with the National Weather Service’s Los Angeles/Oxnard forecasting office.
https://www.nytimes.com/article/california-weather.html?surface=most-popular&fellback=false&req_id=247945524&algo=bandit-all-surfaces&imp_id=343912850&action=click&module=Most%20Popular&pgtype=Homepage
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.

vox_mundi

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Re: Heatwaves
« Reply #481 on: September 07, 2020, 07:11:32 AM »
LA County Records Highest-Ever Temperature
https://www.wrh.noaa.gov/total_forecast/getprod.php?wfo=lox&print=yes&prod=rerlox

List: All records shattered

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

Scary Footage of Pyrocumulus "Column Collapse" Earlier this AM. This occurs when there is temporary interruption in sustained fire updraft strength & air falls rapidly back toward surface--similar to thunderstorm downburst. Extremely dangerous conditions

Video: https://mobile.twitter.com/Weather_West/status/1302629728352755717

Fire plume reached as high as 15,000m (50,000 feet)!
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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

Sigmetnow

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Re: Heatwaves
« Reply #482 on: September 07, 2020, 08:20:45 PM »
120°F = 48.9°C  California

John Lindsey: "I didn't think it was possible in San Luis Obispo, but the Santa Lucia winds' compressional heating has driven the temperature at Cal Poly to 120 degrees! These are unmatched measurements.”
https://mobile.twitter.com/pge_john/status/1302707136338604032
Weather data and graphs at the link.

Daniel Swain: "Incredible heatwave across coastal California, w/multiple locations setting new all-time records (many spots breaking monthly/daily records). @extremetemps thinks San Luis Obispo's 120F reading may be hottest on record for so close to an ocean *anywhere in the Americas! #CAwx “
https://mobile.twitter.com/weather_west/status/1302742065357316097

National Weather Service: "The heat wave continues for one more day across the Southwest and California today. Well below and even record low temperatures are forecast in the Central U.S. by Wednesday.”
https://mobile.twitter.com/nws/status/1302950498509688832
Max/min temperature maps below.
People who say it cannot be done should not interrupt those who are doing it.

Bruce Steele

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Re: Heatwaves
« Reply #483 on: September 07, 2020, 10:24:28 PM »
Here is a story about Santa Barbara hitting 125F back in the mission period. Santa Barbara closer to the beach than San Luis Obispo.

https://yankeebarbareno.com/2010/10/08/17/

Here in Buellton we were at 112F for hours yesterday. I used a one day 25kWh( single day record for this year )  from the grid because air conditioner couldn’t keep up even though we had the thermostat set at 86F.  I spent several hours outside keeping wallows full. I have a sow very, very ready to have babies but I am glad yesterday wasn’t the day. Muy Caliente!

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Re: Heatwaves
« Reply #484 on: September 08, 2020, 06:32:55 AM »
I wish your farm strength and luck Bruce in these hard times. Financially, weather-wise and health-wise.
Farming is getting harder and harder in many places but California and mid-west are in the climate 'warzone' it seems.

Interestingly I've just read on the wikipedia page that Buellton has an ostrich and emu farm. (https://www.ostrichlandusa.com/)
"It is preoccupation with possessions, more than anything else, that prevents us from living freely and nobly" - Bertrand Russell
"It is preoccupation with what other people from your groups think of you, that prevents you from living freely and nobly" - Nanning
Why do you keep accumulating stuff?

Bruce Steele

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Re: Heatwaves
« Reply #485 on: September 08, 2020, 07:36:39 PM »
Thanks nanning. I don’t have many problems really. Vegetable farmers I know have lots vast amounts of tomatoes , chilies, walnuts, avocados  and field crops that sunburn during heatwaves. Second large loss for this season.
 Yes we have ostriches and emu farms that are really just excuses for tapping into tourist dollars. Tourists buy little buckets of feed for very high prices and feed the ostriches. Fun for the kids but not a farm so much as a tourist trap. We also have lots of winery’s and tasting rooms , gambling casinos, and
a Danish themed tourist trap named Solvang. Los Angeles is within day trip range and we collect hobby farmers and wealthy city folks seeking “ retirement in the country “. Pot and grapes are not food however so the most valuable crops are inebriates. The heatwave was terrible for the grapes but pot loves the heat. Pot taxes have been a boon  to the county coffers while the hotels, restaurants and service economy taxes have gone missing.
 Strawberries are also an important county crops that has dumped more methyl bromide into the atmosphere than whole countries in Europe. I don’t know what crop losses they had from the heatwave but I suppose strawberries burn in the heat also.
 

Bruce Steele

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Re: Heatwaves
« Reply #486 on: September 09, 2020, 08:51:33 PM »
I checked with the organic farmers I know and sunburn on tomatoes, chilies and sensitive crops were not as large as expected. Although the temperature here in the valley reached 122F in Solvang there wasn’t as much sunburn damage as heatwaves we have experienced that didn’t reach anything like 122F. I can only assume the smoke moderated the intensity of sunlight reaching the ground.

https://santamariatimes.com/news/local/after-sizzling-heat-northern-santa-barbara-county-blanketed-by-smoke-ash/article_964140ba-cdb3-5d4b-8493-d83c7827a62b.html

vox_mundi

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Re: Heatwaves
« Reply #487 on: September 26, 2020, 03:18:51 AM »
To call next week's pattern amplified would be an understatement.  Ridge over the ENTIRE West Coast is either record breaking or a once in 30 year event for this time of the year.  Southeast trough: once in a 2 to 10 year event.

https://mobile.twitter.com/RobElvington/status/1309481929830535173



Aside from fire danger, heat (likely record breaking) will be a concern w/ Monday probably tracking the hottest in the 5 day span from Sunday-Thursday, expected highs > 15 to 20+ degrees above average inland. Sun/Mon/Tue highs also shown.

https://mobile.twitter.com/RobMayeda/status/1309569424140034049

The heat isn’t just weather – it’s part of a trend. Nasa researchers who document the rising temperatures report that the fires and the conditions that cause them are going to get worse.

“Heatwaves are becoming more frequent, lasting longer, and increasing in night-time temperature and humidity, particularly in urban regions such as the Los Angeles basin,” reported Glynn Hulley, a climate scientist at Nasa’s Jet Propulsion Laboratory who co-authored a study this year on increasingly intense heatwaves. Los Angeles recorded its highest temperature ever – 121F – in early September.

https://earthobservatory.nasa.gov/images/147256/california-heatwave-fits-a-trend

https://www.theguardian.com/us-news/2020/sep/25/california-heatwave-temperatures-wildfires

https://www.washingtonpost.com/weather/2020/09/25/california-wildfires-heat-wave/


https://wildfiretoday.com/
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― Leonardo da Vinci

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