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Central PA Summer 2026 Discussion/Obs Thread


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Continued warm and humid through Tuesday before we start a welcome cooling trend which by Saturday morning will see some locations with lows in the 50's with highs by the end of the week in the pleasant 70's. Best chances of any rain will be Monday night through Wednesday

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I had a request to update the "heatwave" stats to something potentially more meaningful. Which is 3 or more consecutive days with daily maximum temperatures above the 90th and 95th percentile for all Chester County Stations. The below rank summary makes the absolute-vs-relative divergence concrete. Sorted by absolute rank, the biggest movers are the 2010s (11th → 4th) and 2020s (13th → 6th), both rising 7 places once heat is judged against each station's own norm — meaning recent decades have been locally extreme even though they weren't absolutely record-hot. Going the other way, the 1960s (−4) and 1990s (−5) fall under the relative lens, and the 1940s slip from 1st to 3rd. The 1930s hold firm near the top under both definitions, and the 1950s actually take the #1 spot under P90 

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Hazardous Weather Outlook
National Weather Service State College PA
424 AM EDT Mon Aug 10 2026

PAZ004>006-010>012-037-041-042-045-046-049>053-058-110830-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Tioga-
Northern Lycoming-Sullivan-Southern Clinton-Southern Lycoming-Union-
Snyder-Montour-Northumberland-Columbia-Schuylkill-
424 AM EDT Mon Aug 10 2026

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Thunderstorms with severe wind gusts and locally heavy rain will be
possible this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Thunderstorms with locally heavy rain are possible Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

$$

Hazardous Weather Outlook
National Weather Service State College PA
424 AM EDT Mon Aug 10 2026

PAZ017>019-024>028-033>036-056-057-059-063>066-110830-
Clearfield-Northern Centre-Southern Centre-Cambria-Blair-Huntingdon-
Mifflin-Juniata-Somerset-Bedford-Fulton-Franklin-Perry-Dauphin-
Lebanon-Cumberland-Adams-York-Lancaster-
424 AM EDT Mon Aug 10 2026

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Thunderstorms with severe wind gusts and locally heavy rain will be
possible this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Strong thunderstorms with gusty winds and locally heavy rain are
possible Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

$$
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Monday August 10th, 2026 @ 5:45 AM EDT
Severe Weather Risk Today
This Morning: Initial rounds of showers/storms
- Gusty winds & small hail possible; severe weather less likely
Later Today: Additional showers/storms, some of which may be severe
- Main hazards are damaging wind gusts and localized flooding
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