Central PA Summer 2025

[canderson]

90 at 1:30. Gonna be a long week ahead 

[Voyager]

Where the hell did this come from???

This Afternoon

A chance of showers and thunderstorms, mainly between 4pm and 5pm. Partly sunny, with a high near 85. Light southwest wind. Chance of precipitation is 30%.

[Voyager]

Even looks like showers are trying to pop.

[ChescoWx]

The NWS has the next 5 days here in East Nantmeal with forecast high temperatures over 90 degrees. I have been taking observations here for 22 summers since 2004. I have only experienced a "heat wave" (3 consecutive days of 90+ temps) but 5 times. 2006 / 2008 (2x) / 2010 and the last time in 2020. In each of those years we only saw 3 straight days with 90 plus readings. Other high elevation spots in the county including Atglen and West Grove has also seen very few defined "heat waves". This week sure looks likely to even in these higher spots result in at least 3 straight days of heat.

[ChescoWx]

More detail on the other Chester County sites where heat waves are rare. At West Grove with data since 2009 there have also only been 5 heat waves. With those occurring in 2011 / 2012 (2x) / 2013 and the last time in 2018. Also over in Atglen with records since 2012 - only 3 heat waves in the last 13 summers occurring in 2013 / 2023 and 2024.

[ChescoWx]

Glenmoore with records back to 2012 has recorded 7 heat waves in the last 13 summers. Those occurring in 2013 / 2016 / 2020/ 2022 and 3 times just last summer in 2024.

[Superstorm]

Anybody hit 90F today?


.

[Itstrainingtime]

MRGL risk of severe thunderstorms tomorrow. That came out of nowhere.

[Itstrainingtime]

21 minutes ago, Superstorm said:

Anybody hit 90F today?


.

89 here and 89 at MU.

[Superstorm]

88F here. Guess we start the streak tomorrow.


.

[Yardstickgozinya]

27 minutes ago, Itstrainingtime said:

MRGL risk of severe thunderstorms tomorrow. That came out of nowhere.

It was very close on previous outlooks. as mentioned yesterday spc keeps the chances alive but slim untill Monday. 

[Yardstickgozinya]

4 minutes ago, Yardstickgozinya said:

It was very close on previous outlooks. as mentioned yesterday spc keeps the chances alive but slim untill Monday. 

My guess is s SPC put that In place just incase anything does managed to break the cap in the afternoon. 

[Yardstickgozinya]

I imagine we'll see a few days of very high cape with  unbreakable Inversions in the week ahead. 

[Yardstickgozinya]

Always exciting to see how these heat waves will end. 

[Voyager]

1 hour ago, Superstorm said:

Anybody hit 90F today?


.

On the nose...

[mahantango#1]

1 hour ago, Superstorm said:

Anybody hit 90F today?


.

Yes 89.6 here 

[canderson]

90 was my high. MDT came in at 89. 

[canderson]

4 hours ago, Itstrainingtime said:

MRGL risk of severe thunderstorms tomorrow. That came out of nowhere.

The upper levels are wild. Were today and will be through Tuesday. Nothing should get pushed but if so isolated damaging wind is likely. 

That derecho out in ND had 105 mph straight line winds (outside the massive tornadoes). That’s partially over us. 

[canderson]

I’m not convinced Monday or Tuesday I get below 80. 

[Yardstickgozinya]

So as it turns out, this is all associated with the thunderstorm complex dropping out of new york, pretty nasty one too with a  bookend vortices atm.

https://www.spc.noaa.gov/products/outlook/day1otlk.html

[Yardstickgozinya]

Nice bookend vortices and warm air feed. Its also had a few hail cores throughout its life cycle .