Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 264, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 20, 2026, 3:39 PM EDT for Adams County, York County, Pennsylvania. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 20, 2026, 3:39 PM EDT (19:39 UTC)
- Expired
- Aug 20, 2026, 4:30 PM EDT
- In force
- 51 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Adams County, PA, York County, PA
The radar
The Sterling radar (KLWX), 111 km from the middle of the area, began a volume at 19:40 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 20, 2:31 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 20, 2:40 PM EDT, 59 minutes earlier.
Area forecast discussion, Aug 20, 2:40 PM EDT, 59 minutes before
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</html>Hazardous weather outlook, Aug 20, 2:34 PM EDT, 1 hour 5 minutes before
Hazardous Weather Outlook National Weather Service State College PA 234 PM EDT Thu Aug 20 2026 PAZ012-041-042-045-046-049>053-057-058-211845- Northern Clinton-Northern Lycoming-Sullivan-Southern Clinton- Southern Lycoming-Union-Snyder-Montour-Northumberland-Columbia- Dauphin-Schuylkill- 234 PM EDT Thu Aug 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ064-211845- Adams- 234 PM EDT Thu Aug 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... ...SEVERE THUNDERSTORM WATCH 604 IN EFFECT UNTIL 10 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Flood Watch. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ017>019-024>028-033>036-056-063-211845- Clearfield-Northern Centre-Southern Centre-Cambria-Blair-Huntingdon- Mifflin-Juniata-Somerset-Bedford-Fulton-Franklin-Perry-Cumberland- 234 PM EDT Thu Aug 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ059-065-066-211845- Lebanon-York-Lancaster- 234 PM EDT Thu Aug 20 2026 ...FLOOD WATCH IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 604 IN EFFECT UNTIL 10 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Flood Watch. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ004>006-010-011-037-211845- Warren-McKean-Potter-Elk-Cameron-Tioga- 234 PM EDT Thu Aug 20 2026 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Aug 20, 12:53 PM EDT, 2 hours 46 minutes before
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</html>Local storm report, Aug 20, 1:08 PM EDT, 2 hours 31 minutes before
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</html>Special weather statement, Aug 20, 1:14 PM EDT, 2 hours 25 minutes before
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</html>Local storm report, Aug 20, 1:41 PM EDT, 1 hour 58 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
141 PM EDT Thu Aug 20 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0130 PM Flash Flood 2 W Brisbin 40.84N 78.40W
08/20/2026 Clearfield PA Fire Dept/Rescue
Flooded basement.
&&Local storm report, Aug 20, 1:42 PM EDT, 1 hour 57 minutes before
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</html>Local storm report, Aug 20, 2:07 PM EDT, 1 hour 32 minutes before
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</html>The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 8:25 AM EDT | Flood Watch | CTP | Adams, Bedford, Blair, Cambria, Centre, Clearfield and 21 more | 10 hr |
| Aug 20, 11:40 AM EDT | Flash Flood Warning | CTP | Cambria, Centre, Clearfield | 3 hr |
| Aug 20, 12:45 PM EDT | Flash Flood Warning | CTP | Blair, Cambria, Centre, Clearfield, Huntingdon | 3 hr |
| Aug 20, 2:33 PM EDT | Areal Flood Warning | CTP | Blair, Cambria, Centre, Clearfield | 3 hr |
| Aug 20, 2:55 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin, York | 50 min |
| Aug 20, 3:17 PM EDT | Areal Flood Warning | CTP | Blair, Cambria, Centre, Clearfield, Clinton, Huntingdon | 3 hr |
| Aug 20, 4:12 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 78 min |
| Aug 20, 4:29 PM EDT | Tornado Warning | CTP | Lancaster | 31 min |
| Aug 20, 4:41 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Aug 20, 4:47 PM EDT | Tornado Warning | CTP | Lancaster | 28 min |
| Aug 20, 5:54 PM EDT | River Flood Warning | CTP | Blair, Huntingdon | 3 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2026Every severe thunderstorm warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.