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
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 7 | 42% | 24 | 100% | 22 min |
| Flash flood warnings | 7 | 4 | 43% | 4 | 100% | 44 min |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 14 | 3 | 79% | 5 | 60% | 13 min |
| NWS State College, PA: severe thunderstorm warnings | 212 | 129 | 39% | 354 | 89% | 22 min |
| NWS State College, PA: flash flood warnings | 78 | 35 | 55% | 105 | 94% | 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 7:31 PM EST | Snow Squall Warning | CTP | 44 min |
| Jan 3, 4:31 PM EST | Snow Squall Warning | CTP | 44 min |
| Jan 3, 4:34 PM EST | Snow Squall Warning | CTP | 41 min |
| Jan 5, 3:11 AM EST | Winter Weather Advisory | CTP | 42 hr |
| Jan 18, 2:37 PM EST | Winter Weather Advisory | CTP | 42 hr |
| Jan 19, 3:38 AM EST | Cold Weather Advisory | CTP | 3 days |
| Jan 19, 1:00 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 26, 1:43 PM EST | Wind Advisory | CTP | 46 hr |
| Jan 28, 1:20 PM EST | Wind Advisory | CTP | 28 hr |
| Feb 2, 1:58 PM EST | Winter Weather Advisory | CTP | 13 hr |
| Feb 3, 2:12 PM EST | Winter Storm Watch | CTP | 24 hr |
| Feb 4, 2:22 PM EST | Ice Storm Warning | CTP | 46 hr |
| Feb 6, 4:00 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 6, 1:32 PM EST | Wind Advisory | CTP | 22 hr |
| Feb 7, 3:52 AM EST | Winter Storm Watch | CTP | 9 hr |
| Feb 7, 1:06 PM EST | Winter Weather Advisory | CTP | 38 hr |
| Feb 8, 3:42 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 11, 2:59 PM EST | Winter Weather Advisory | CTP | 37 hr |
| Feb 14, 4:20 AM EST | Winter Weather Advisory | CTP | 53 hr |
| Feb 15, 2:33 AM EST | High Wind Watch | CTP | 25 hr |
| Feb 15, 12:50 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 16, 3:12 AM EST | High Wind Warning | CTP | 37 hr |
| Feb 16, 10:08 AM EST | Dense Fog Advisory | CTP | 4 hr |
| Feb 17, 1:27 AM EST | Special Weather Statement | CTP | 33 min |
| Feb 17, 2:59 AM EST | Cold Weather Advisory | CTP | 31 hr |
| Feb 17, 3:23 AM EST | Special Weather Statement | CTP | 52 min |
| Feb 17, 4:18 AM EST | Special Weather Statement | CTP | 42 min |
| Mar 5, 2:19 PM EST | Mesoscale Discussion | SPC | 116 min |
| Mar 6, 2:08 AM EST | Wind Advisory | CTP | 26 hr |
| Mar 16, 12:08 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Mar 16, 12:50 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 16, 1:47 PM EDT | Severe Thunderstorm Warning | CTP | 43 min |
| Mar 16, 2:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Mar 16, 2:27 PM EDT | Severe Thunderstorm Warning | CTP | 78 min |
| Mar 26, 8:39 AM EDT | Special Weather Statement | CTP | 51 min |
| Mar 26, 9:59 AM EDT | Special Weather Statement | CTP | 61 min |
| Mar 26, 11:02 AM EDT | Special Weather Statement | CTP | 58 min |
| Apr 2, 3:38 PM EDT | Special Weather Statement | CTP | 37 min |
| Apr 14, 4:05 AM EDT | Wind Advisory | CTP | 40 hr |
| Apr 15, 1:28 PM EDT | Special Weather Statement | CTP | 62 min |
| Apr 19, 6:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 19, 6:27 PM EDT | Severe Thunderstorm Warning | CTP | 48 min |
| Apr 29, 3:26 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 29, 6:10 PM EDT | Severe Thunderstorm Warning | CTP | 65 min |
| Apr 29, 6:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| May 1, 6:35 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 1, 7:44 PM EDT | Severe Thunderstorm Warning | CTP | 46 min |
| May 1, 10:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 5, 8:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 13, 4:15 AM EDT | Flood Watch | CTP | 24 hr |
| May 16, 1:41 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 16, 2:32 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 16, 4:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 5, 5:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 5, 7:41 PM EDT | Severe Thunderstorm Warning | CTP | 34 min |
| Jun 5, 8:06 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jun 9, 2:46 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 9, 7:15 PM EDT | Severe Thunderstorm Warning | CTP | 45 min |
| Jun 9, 7:21 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jun 14, 2:41 AM EDT | Flood Watch | CTP | 20 hr |
| Jun 17, 3:14 AM EDT | Flood Watch | CTP | 19 hr |
| Jun 17, 2:13 PM EDT | Severe Thunderstorm Warning | CTP | 22 min |
| Jun 17, 3:57 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jun 17, 4:48 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jun 17, 8:08 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jun 18, 7:51 PM EDT | Severe Thunderstorm Warning | CTP | 39 min |
| Jun 19, 6:44 PM EDT | Severe Thunderstorm Warning | CTP | 31 min |
| Jun 21, 3:02 AM EDT | Heat Advisory | CTP | 5 days |
| Jun 25, 2:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 28, 10:51 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Jun 28, 11:48 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 28, 2:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 28, 4:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 30, 12:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 1, 2:23 AM EDT | Flood Watch | CTP | 20 hr |
| Jul 1, 11:48 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 1, 12:59 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 1, 1:34 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jul 13, 10:32 AM EDT | Flood Watch | CTP | 14 hr |
| Jul 13, 1:23 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 14, 2:22 AM EDT | Flood Watch | CTP | 17 hr |
| Jul 16, 12:03 PM EDT | Flood Watch | CTP | 12 hr |
| Jul 16, 5:36 PM EDT | Flash Flood Warning | CTP | 2 hr |
| Jul 16, 11:04 PM EDT | Severe Thunderstorm Warning | CTP | 42 min |
| Jul 26, 11:58 AM EDT | Severe Thunderstorm Warning | CTP | 47 min |
| Jul 26, 7:00 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 29, 1:34 AM EDT | Heat Advisory | CTP | 42 hr |
| Aug 17, 12:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Aug 24, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 23, 9:57 PM EDT | Dense Fog Advisory | CTP | 12 hr |
| Sep 28, 3:31 AM EDT | Dense Fog Advisory | CTP | 5 hr |
| Oct 1, 12:35 AM EDT | Frost Advisory | CTP | 32 hr |
| Oct 8, 2:15 AM EDT | Freeze Watch | CTP | 23 hr |
| Oct 9, 1:41 AM EDT | Freeze Warning | CTP | 31 hr |
| Oct 30, 12:46 PM EDT | Wind Advisory | CTP | 35 hr |
| Nov 4, 1:08 PM EST | High Wind Watch | CTP | 13 hr |
| Nov 4, 1:08 PM EST | Wind Advisory | CTP | 39 hr |
| Nov 11, 2:20 AM EST | Wind Advisory | CTP | 13 hr |
| Nov 12, 1:05 AM EST | Wind Advisory | CTP | 14 hr |
| Nov 15, 12:39 PM EST | Wind Advisory | CTP | 31 hr |
| Nov 19, 11:28 PM EST | Dense Fog Advisory | CTP | 12 hr |
| Nov 25, 4:26 PM EST | Wind Advisory | CTP | 46 hr |
| Nov 28, 1:59 PM EST | Snow Squall Warning | CTP | 46 min |
| Nov 28, 2:59 PM EST | Snow Squall Warning | CTP | 31 min |
| Nov 28, 4:00 PM EST | Snow Squall Warning | CTP | 30 min |
| Dec 1, 1:57 AM EST | Winter Weather Advisory | CTP | 44 hr |
| Dec 4, 11:42 AM EST | Snow Squall Warning | CTP | 63 min |
| Dec 18, 1:47 AM EST | High Wind Watch | CTP | 10 hr |
| Dec 18, 12:09 PM EST | High Wind Warning | CTP | 35 hr |
| Dec 19, 4:19 PM EST | Snow Squall Warning | CTP | 41 min |
| Dec 19, 4:27 PM EST | Snow Squall Warning | CTP | 48 min |
| Dec 19, 5:07 PM EST | Snow Squall Warning | CTP | 53 min |
| Dec 22, 5:50 PM EST | Winter Weather Advisory | CTP | 18 hr |
| Dec 24, 2:17 AM EST | Winter Storm Watch | CTP | 36 hr |
| Dec 25, 2:15 PM EST | Winter Weather Advisory | CTP | 41 hr |
| Dec 26, 11:13 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 27, 11:49 AM EST | High Wind Watch | CTP | 25 hr |
| Dec 28, 12:49 PM EST | High Wind Warning | CTP | 47 hr |
| Dec 28, 12:49 PM EST | Wind Advisory | CTP | 51 hr |
| Dec 30, 12:52 AM EST | Snow Squall Warning | CTP | 38 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 12 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 25 |
| Special Weather Statement | 8 |
| Flooding | |
| Flash Flood Warning | 7 |
| Flood Watch | 7 |
| Winter | |
| Ice Storm Warning | 1 |
| Snow Squall Warning | 11 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 9 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Cold Weather Advisory | 2 |
| Frost Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 4 |
| Wind Advisory | 12 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
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.