Alert archive / Pennsylvania / Tioga County
Weather alerts in Tioga County, Pennsylvania, 2025
99 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Tioga County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 99
- Warnings
- 24
- Watches
- 16
- Advisories
- 36
- Busiest month
- June19 alerts
- Busiest day
- March 16, 20256 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Tioga County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 6 | 50% | 7 | 100% | 18 min |
| Flash flood warnings | 2 | 0 | 100% | 0 |
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, 10:52 PM EST | Special Weather Statement | CTP | 53 min |
| Jan 3, 5:10 PM EST | Snow Squall Warning | CTP | 50 min |
| Jan 17, 2:21 PM EST | Extreme Cold Watch | CTP | 37 hr |
| Jan 19, 3:38 AM EST | Cold Weather Advisory | CTP | 3 days |
| Jan 28, 6:15 AM EST | Special Weather Statement | CTP | 60 min |
| Jan 28, 6:34 AM EST | Snow Squall Warning | CTP | 41 min |
| Jan 28, 7:16 AM EST | Snow Squall Warning | CTP | 59 min |
| Jan 29, 10:11 AM EST | Special Weather Statement | CTP | 49 min |
| Jan 29, 10:43 AM EST | Snow Squall Warning | CTP | 62 min |
| Jan 29, 11:21 AM EST | Snow Squall Warning | CTP | 39 min |
| Jan 30, 3:35 AM EST | Winter Weather Advisory | CTP | 29 hr |
| Feb 2, 1:58 PM EST | Winter Weather Advisory | CTP | 13 hr |
| Feb 4, 2:22 PM EST | Winter Weather Advisory | CTP | 46 hr |
| Feb 6, 4:00 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 7, 5:31 AM EST | Special Weather Statement | CTP | 59 min |
| Feb 7, 1:06 PM EST | Winter Weather Advisory | CTP | 38 hr |
| Feb 8, 6:21 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 16, 3:12 AM EST | High Wind Warning | CTP | 37 hr |
| Feb 16, 3:12 AM EST | Wind Advisory | CTP | 37 hr |
| Feb 17, 2:59 AM EST | Cold Weather Advisory | CTP | 31 hr |
| Mar 6, 2:08 AM EST | Wind Advisory | CTP | 26 hr |
| Mar 16, 2:49 AM EDT | Wind Advisory | CTP | 15 hr |
| Mar 16, 2:54 AM EDT | Dense Fog Advisory | CTP | 7 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, 2:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Mar 16, 3:18 PM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| Apr 14, 11:05 PM EDT | Special Weather Statement | CTP | 55 min |
| Apr 15, 12:08 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 15, 1:10 PM EDT | Special Weather Statement | CTP | 65 min |
| Apr 19, 1:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Apr 29, 2:41 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 29, 3:26 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 29, 7:12 PM EDT | Severe Thunderstorm Warning | CTP | 33 min |
| May 2, 5:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 5, 8:06 PM EDT | Flash Flood Warning | CTP | 3 hr |
| May 6, 10:54 AM EDT | Flood Watch | CTP | 12 hr |
| May 6, 4:29 PM EDT | Flash Flood Warning | CTP | 3 hr |
| May 17, 4:26 PM EDT | Severe Thunderstorm Warning | CTP | 38 min |
| May 19, 3:34 AM EDT | Frost Advisory | CTP | 28 hr |
| Jun 1, 1:18 PM EDT | Frost Advisory | CTP | 18 hr |
| Jun 5, 1:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jun 5, 5:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 5, 7:06 PM EDT | Severe Thunderstorm Warning | CTP | 24 min |
| Jun 5, 7:20 PM EDT | Severe Thunderstorm Warning | CTP | 40 min |
| Jun 6, 4:46 PM EDT | Severe Thunderstorm Warning | CTP | 29 min |
| Jun 9, 4:00 AM EDT | Flood Watch | CTP | 24 hr |
| Jun 9, 2:46 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 9, 6:56 PM EDT | Severe Thunderstorm Warning | CTP | 49 min |
| Jun 9, 7:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 9, 7:45 PM EDT | Severe Thunderstorm Warning | CTP | 45 min |
| Jun 18, 7:34 PM EDT | Severe Thunderstorm Warning | CTP | 41 min |
| Jun 21, 3:02 AM EDT | Heat Advisory | CTP | 5 days |
| Jun 26, 12:36 PM EDT | Flood Watch | CTP | 10 hr |
| 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, 3:17 PM EDT | Severe Thunderstorm Warning | CTP | 43 min |
| Jun 30, 6:17 PM EDT | Severe Thunderstorm Warning | CTP | 30 min |
| Jul 2, 5:12 AM EDT | Dense Fog Advisory | CTP | 4 hr |
| Jul 3, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 3, 2:17 PM EDT | Severe Thunderstorm Warning | CTP | 29 min |
| Jul 7, 2:04 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 12:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| 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 30, 2:19 PM EDT | Flood Watch | CTP | 29 hr |
| Aug 24, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 25, 5:12 AM EDT | Dense Fog Advisory | CTP | 4 hr |
| Sep 4, 10:32 PM EDT | Dense Fog Advisory | CTP | 11 hr |
| Sep 7, 1:12 PM EDT | Frost Advisory | CTP | 19 hr |
| Sep 23, 9:57 PM EDT | Dense Fog Advisory | CTP | 12 hr |
| Sep 25, 11:14 PM EDT | Dense Fog Advisory | CTP | 10 hr |
| Oct 1, 12:35 AM EDT | Frost Advisory | CTP | 32 hr |
| Oct 8, 2:15 AM EDT | Frost Advisory | CTP | 31 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 9, 3:31 AM EST | Dense Fog Advisory | CTP | 5 hr |
| Nov 15, 12:39 PM EST | Wind Advisory | CTP | 31 hr |
| Nov 26, 1:45 AM EST | Winter Weather Advisory | CTP | 71 hr |
| Dec 1, 1:57 AM EST | Winter Weather Advisory | CTP | 44 hr |
| Dec 4, 10:00 AM EST | Snow Squall Warning | CTP | 45 min |
| Dec 4, 10:45 AM EST | Snow Squall Warning | CTP | 60 min |
| Dec 4, 11:42 AM EST | Snow Squall Warning | CTP | 63 min |
| Dec 9, 1:28 AM EST | Winter Weather Advisory | CTP | 3 days |
| Dec 18, 1:47 AM EST | Wind Advisory | CTP | 46 hr |
| 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 27, 12:09 PM EST | Winter Weather Advisory | CTP | 40 hr |
| Dec 28, 12:49 PM EST | Wind Advisory | CTP | 51 hr |
| Dec 28, 9:56 PM EST | Dense Fog Advisory | CTP | 10 hr |
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 | 4 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 6 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flood Watch | 6 |
| Winter | |
| Snow Squall Warning | 8 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 12 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Extreme Cold Watch | 1 |
| Freeze Watch | 1 |
| Cold Weather Advisory | 2 |
| Frost Advisory | 5 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 2 |
| Wind Advisory | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
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.