Repeating myself, the continuation of the current wave, days 6 to 10 can be evaluated using 5-day average over ensemble of forecast, to fail in the conservative side.
What the EC ensembles say is that the Greenland ridge will be strengthened, and the corresponding high will be strongly reinforced. Not as bad circulation as present, but not party time for the pack either. And a very bad news for Greenland
Hot damn! HOT DAMN! Friv, where are you? We need your writer's talents, sir. Seems this one is quite a fitting occasion...
This is not just "very bad". This may well be total melt of Greenland surface of unprecedented proportions - as well as similar kind of event for sea ice north from Greenland. Hell...
See, 11...12th June, this year, nearly half of Greenland already melted. This means less snow cover and easier-to-melt layers of refrozen snow/ice mix (those always have less reflectivity than proper snow - so lower albedo). Back in those days in June, Greenland was losing ~12 billion tons of ice/snow per _day_.
Sure it was a bit higher insolation than now, but then whole thing was colder on average, i bet.
But most importantly, that june melt event was done by a high some ~1025 hPa strong (seeing it
here). But this one we see developing, i see quite a few days being in 1030s, and i even see 1040+ couple times in the forecast! Wow. And yep it seems extremely stable system, too.
Snow thickness is projected to steadily decline next ~5 days from what i see, across whole Greenland, including every last grid cell in its central regions. Most of central Greenland i see its snow cover going from 48...72 cm to just 24...36 by August 1st, i.e. losing ~half of its snow cover despite all the elevation central Greenland has, - and the high seems not to be going anyware past that date, too. You don't lose those amounts of snow without massive melt event going, me thinks...
I suspect that much of ice retreat we now see directly north from Greenland is powered by melt water bottom melt, already. That water just gets significantly warm while running off the land, and then bottom-melts lots of ice once it's in the ocean. But after this event unfolding, with possibly over a hundred Gt meltwater runoff in a few days (i bet under-ice water bodies of Greenland are already overflowing by now), means up to few dozens Gt meltwater in a few days to the North side of it, and with such an insolation and already warmed up coasts? Can't even remotely evaluate the consequences, other than suspecting they might be devastating like nothing else before in the region.
Next week might well be no less historical than the GAC of 2012, gentlemen.