PHL hourly ob "rule of thumb" for 100+: 89 by 10AM, 94 by noon, 98 by 2PM

[Cary]

PHL @ 98 now

PNE, PTW, TTN and ACY all @ 100 now

[Rainshadow]

Kind of upset this heatwave will end without any severe weather episode, we could use the rain.

Maybe some pulse type severe like Tuesday, which only helps if you're near one of them precip wise.

[famartin]

My DVP2 recorded a dew point high of 81F, which is pretty close to reality I'd say, given most stations around here have been upper 70s/80. I think this is the highest I recall seeing dews (78-80 for much the day). Dew point is down to 77 now.

As of about 10 minutes ago, my parens' Davis' RH is running 10% ahead of the ASOS. That gives you a clue as to what's going on with some of these PWS dewpoints.

[Cary]

PHL officially @ 100.

PNE: 104

WRI: 100

PTW: 104

TTN: 103

ACY: 102