2019 Summer Discussion (Northern Hemisphere)

Some quick maps of the temperatures at 6 pm around here and my former place 


In the  circles some reference points: Lyon (39.6°C), the closest weather station to my place in Grenoble (38.2°C), Chambéry (34.5°C), Turin city center (38.6°C) and Aosta (40.1°C !)

Dew point in the same area and same moment:





Focus on my valley (it was very warm also up on the mountains)




More general map of my home region in Italy:

I read that the June record high for the Torino Caselle weather station (the official one for Turin) was surpassed in the afternoon, the old record was 35.6°C at the temp was already above 36°C in the middle of the afternoon. The all time record would be of just 37.1°C, and right now the measurements are extremely close to it. 
Several smaller stations surely had some record this time (either monthly or all-time), I just don't have the time for check other stations now.

rather dry heat today and yesterday but nothing extreme (black is temperatures in °F, blue dewpoints in °F)

High reached a scorching 86F today, the hottest day in 298 days for me. Absolutely miserable temperatures IMO . Heading to the Northern PA mountains tomorrow to escape the heat. Will only reach the upper 70s there tomorrow and this weekend

Looks like no summer weather for the next while in the PNW. Cool and cloudy/showery.

Hoping for at least a few weeks around/above 30C in late July or August.

Nice morning here at 66 F with some ground fog, today is predicted at 94 F with a moderate chance of afternoon storms. Nice summer weather.

The reason for these insane dews is the unprecedented 850 mbar temps. With such warm mid-layer temps, the temperature gradient between the ground and the higher parts of the atmosphere is much less, and there's less convection, hence less dry altitude air mixing in.

Because, damn, a 26.7°C dew point in Brittany, of all places, is fucking difficult to believe in. And a 34.6°C air temp / 25.7°C dew point combo (heat index of 44) on hour earlier. This is seriously fucked up for Rennes.
www.infoclimat.fr/observations-meteo/archives/28/juin/2019/rennes-st-jacques/07130.html


This is as impressive, or maybe even more, than the new national heat record of 45.9°C. Even down there in Provence, some unusual dew point / air temp combos have been recorded before the gates of hell opened. For example in Carpentras with 40.7/20.8°C (heat index of 46):
www.infoclimat.fr/observations-meteo/archives/28/juin/2019/carpentras/07586.html


And look at this sultry night right on the shores of the Mediterranean. 33°C+ @ 4 am:
www.infoclimat.fr/observations-meteo/temps-reel/cap-bear-port-vendres/07749.html



And the sheer epicness of this map from yesterday. Infoclimat's color range is off lol:

The huge problem with Infoclimat's maps is that it displays readings from the official Météo France stations as well as those of the amateur StatIC network. They gotta be approved by Infoclimat with pictures, plans and whatnot and can be every bit as reliable as official WS from the secondary network, but well they're not regularly checked by professionals and I'm skeptical of some of the RH measurements posted on there. That particular 46.1°C reading was from one of those stations.