Alert archive / Pennsylvania / Blair County

Weather alerts in Blair County, Pennsylvania, 2025

120 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Blair County and its neighbors

Each county as a circle sized by its count in 2025. Tap one for its archive.

Alerts
120
Warnings
35
Watches
22
Advisories
30
Busiest month
June21 alerts
Busiest day
March 16, 20255 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Blair County, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings12742%24100%22 min
Flash flood warnings7443%4100%44 min

Each office's whole area, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS State College, PA: tornado warnings14379%560%13 min
NWS State College, PA: severe thunderstorm warnings21212939%35489%22 min
NWS State College, PA: flash flood warnings783555%10594%77 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 1, 7:31 PM ESTSnow Squall WarningCTP44 min
Jan 3, 4:31 PM ESTSnow Squall WarningCTP44 min
Jan 3, 4:34 PM ESTSnow Squall WarningCTP41 min
Jan 5, 3:11 AM ESTWinter Weather AdvisoryCTP42 hr
Jan 18, 2:37 PM ESTWinter Weather AdvisoryCTP42 hr
Jan 19, 3:38 AM ESTCold Weather AdvisoryCTP3 days
Jan 19, 1:00 PM ESTMesoscale DiscussionSPC5 hr
Jan 26, 1:43 PM ESTWind AdvisoryCTP46 hr
Jan 28, 1:20 PM ESTWind AdvisoryCTP28 hr
Feb 2, 1:58 PM ESTWinter Weather AdvisoryCTP13 hr
Feb 3, 2:12 PM ESTWinter Storm WatchCTP24 hr
Feb 4, 2:22 PM ESTIce Storm WarningCTP46 hr
Feb 6, 4:00 AM ESTMesoscale DiscussionSPC5 hr
Feb 6, 1:32 PM ESTWind AdvisoryCTP22 hr
Feb 7, 3:52 AM ESTWinter Storm WatchCTP9 hr
Feb 7, 1:06 PM ESTWinter Weather AdvisoryCTP38 hr
Feb 8, 3:42 PM ESTMesoscale DiscussionSPC4 hr
Feb 11, 2:59 PM ESTWinter Weather AdvisoryCTP37 hr
Feb 14, 4:20 AM ESTWinter Weather AdvisoryCTP53 hr
Feb 15, 2:33 AM ESTHigh Wind WatchCTP25 hr
Feb 15, 12:50 PM ESTMesoscale DiscussionSPC4 hr
Feb 16, 3:12 AM ESTHigh Wind WarningCTP37 hr
Feb 16, 10:08 AM ESTDense Fog AdvisoryCTP4 hr
Feb 17, 1:27 AM ESTSpecial Weather StatementCTP33 min
Feb 17, 2:59 AM ESTCold Weather AdvisoryCTP31 hr
Feb 17, 3:23 AM ESTSpecial Weather StatementCTP52 min
Feb 17, 4:18 AM ESTSpecial Weather StatementCTP42 min
Mar 5, 2:19 PM ESTMesoscale DiscussionSPC116 min
Mar 6, 2:08 AM ESTWind AdvisoryCTP26 hr
Mar 16, 12:08 PM EDTMesoscale DiscussionSPC97 min
Mar 16, 12:50 PM EDTTornado WatchSPC7 hr
Mar 16, 1:47 PM EDTSevere Thunderstorm WarningCTP43 min
Mar 16, 2:07 PM EDTMesoscale DiscussionSPC53 min
Mar 16, 2:27 PM EDTSevere Thunderstorm WarningCTP78 min
Mar 26, 8:39 AM EDTSpecial Weather StatementCTP51 min
Mar 26, 9:59 AM EDTSpecial Weather StatementCTP61 min
Mar 26, 11:02 AM EDTSpecial Weather StatementCTP58 min
Apr 2, 3:38 PM EDTSpecial Weather StatementCTP37 min
Apr 14, 4:05 AM EDTWind AdvisoryCTP40 hr
Apr 15, 1:28 PM EDTSpecial Weather StatementCTP62 min
Apr 19, 6:20 PM EDTMesoscale DiscussionSPC85 min
Apr 19, 6:27 PM EDTSevere Thunderstorm WarningCTP48 min
Apr 29, 3:26 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 29, 6:10 PM EDTSevere Thunderstorm WarningCTP65 min
Apr 29, 6:10 PM EDTMesoscale DiscussionSPC95 min
May 1, 6:35 PM EDTSevere Thunderstorm WatchSPC4 hr
May 1, 7:44 PM EDTSevere Thunderstorm WarningCTP46 min
May 1, 10:06 PM EDTMesoscale DiscussionSPC114 min
May 5, 8:11 PM EDTMesoscale DiscussionSPC2 hr
May 13, 4:15 AM EDTFlood WatchCTP24 hr
May 16, 1:41 PM EDTMesoscale DiscussionSPC3 hr
May 16, 2:32 PM EDTSevere Thunderstorm WatchSPC5 hr
May 16, 4:14 PM EDTMesoscale DiscussionSPC2 hr
Jun 5, 5:32 PM EDTMesoscale DiscussionSPC88 min
Jun 5, 7:41 PM EDTSevere Thunderstorm WarningCTP34 min
Jun 5, 8:06 PM EDTFlash Flood WarningCTP3 hr
Jun 9, 2:46 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 9, 7:15 PM EDTSevere Thunderstorm WarningCTP45 min
Jun 9, 7:21 PM EDTFlash Flood WarningCTP3 hr
Jun 14, 2:41 AM EDTFlood WatchCTP20 hr
Jun 17, 3:14 AM EDTFlood WatchCTP19 hr
Jun 17, 2:13 PM EDTSevere Thunderstorm WarningCTP22 min
Jun 17, 3:57 PM EDTFlash Flood WarningCTP3 hr
Jun 17, 4:48 PM EDTFlash Flood WarningCTP3 hr
Jun 17, 8:08 PM EDTFlash Flood WarningCTP3 hr
Jun 18, 7:51 PM EDTSevere Thunderstorm WarningCTP39 min
Jun 19, 6:44 PM EDTSevere Thunderstorm WarningCTP31 min
Jun 21, 3:02 AM EDTHeat AdvisoryCTP5 days
Jun 25, 2:22 PM EDTMesoscale DiscussionSPC113 min
Jun 28, 10:51 AM EDTMesoscale DiscussionSPC114 min
Jun 28, 11:48 AM EDTSevere Thunderstorm WatchSPC8 hr
Jun 28, 2:33 PM EDTMesoscale DiscussionSPC87 min
Jun 28, 4:40 PM EDTMesoscale DiscussionSPC95 min
Jun 30, 12:07 PM EDTMesoscale DiscussionSPC113 min
Jul 1, 2:23 AM EDTFlood WatchCTP20 hr
Jul 1, 11:48 AM EDTMesoscale DiscussionSPC117 min
Jul 1, 12:59 PM EDTSevere Thunderstorm WatchSPC9 hr
Jul 1, 1:34 PM EDTFlash Flood WarningCTP3 hr
Jul 13, 10:32 AM EDTFlood WatchCTP14 hr
Jul 13, 1:23 PM EDTMesoscale DiscussionSPC3 hr
Jul 14, 2:22 AM EDTFlood WatchCTP17 hr
Jul 16, 12:03 PM EDTFlood WatchCTP12 hr
Jul 16, 5:36 PM EDTFlash Flood WarningCTP2 hr
Jul 16, 11:04 PM EDTSevere Thunderstorm WarningCTP42 min
Jul 26, 11:58 AM EDTSevere Thunderstorm WarningCTP47 min
Jul 26, 7:00 PM EDTMesoscale DiscussionSPC90 min
Jul 29, 1:34 AM EDTHeat AdvisoryCTP42 hr
Aug 17, 12:39 PM EDTMesoscale DiscussionSPC66 min
Aug 24, 1:04 PM EDTMesoscale DiscussionSPC116 min
Sep 23, 9:57 PM EDTDense Fog AdvisoryCTP12 hr
Sep 28, 3:31 AM EDTDense Fog AdvisoryCTP5 hr
Oct 1, 12:35 AM EDTFrost AdvisoryCTP32 hr
Oct 8, 2:15 AM EDTFreeze WatchCTP23 hr
Oct 9, 1:41 AM EDTFreeze WarningCTP31 hr
Oct 30, 12:46 PM EDTWind AdvisoryCTP35 hr
Nov 4, 1:08 PM ESTHigh Wind WatchCTP13 hr
Nov 4, 1:08 PM ESTWind AdvisoryCTP39 hr
Nov 11, 2:20 AM ESTWind AdvisoryCTP13 hr
Nov 12, 1:05 AM ESTWind AdvisoryCTP14 hr
Nov 15, 12:39 PM ESTWind AdvisoryCTP31 hr
Nov 19, 11:28 PM ESTDense Fog AdvisoryCTP12 hr
Nov 25, 4:26 PM ESTWind AdvisoryCTP46 hr
Nov 28, 1:59 PM ESTSnow Squall WarningCTP46 min
Nov 28, 2:59 PM ESTSnow Squall WarningCTP31 min
Nov 28, 4:00 PM ESTSnow Squall WarningCTP30 min
Dec 1, 1:57 AM ESTWinter Weather AdvisoryCTP44 hr
Dec 4, 11:42 AM ESTSnow Squall WarningCTP63 min
Dec 18, 1:47 AM ESTHigh Wind WatchCTP10 hr
Dec 18, 12:09 PM ESTHigh Wind WarningCTP35 hr
Dec 19, 4:19 PM ESTSnow Squall WarningCTP41 min
Dec 19, 4:27 PM ESTSnow Squall WarningCTP48 min
Dec 19, 5:07 PM ESTSnow Squall WarningCTP53 min
Dec 22, 5:50 PM ESTWinter Weather AdvisoryCTP18 hr
Dec 24, 2:17 AM ESTWinter Storm WatchCTP36 hr
Dec 25, 2:15 PM ESTWinter Weather AdvisoryCTP41 hr
Dec 26, 11:13 AM ESTMesoscale DiscussionSPC5 hr
Dec 27, 11:49 AM ESTHigh Wind WatchCTP25 hr
Dec 28, 12:49 PM ESTHigh Wind WarningCTP47 hr
Dec 28, 12:49 PM ESTWind AdvisoryCTP51 hr
Dec 30, 12:52 AM ESTSnow Squall WarningCTP38 min

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20242026

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.