Alert archive / Pennsylvania / Tioga County
Weather alerts in Tioga County, Pennsylvania, 2024
153 weather alerts in 2024, 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 2024. Tap one for its archive.
- Alerts
- 153
- Warnings
- 35
- Watches
- 18
- Advisories
- 41
- Busiest month
- June30 alerts
- Busiest day
- January 14, 20247 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 2 tornado warnings covering Tioga County in 2024 had a tornado report inside them.
Tioga County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 18 | 11 | 39% | 15 | 93% | 26 min |
| Flash flood warnings | 4 | 4 | 0% | 11 | 100% | 102 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 16 | 0 | 100% | 4 | 0% | |
| NWS State College, PA: severe thunderstorm warnings | 188 | 125 | 34% | 422 | 74% | 20 min |
| NWS State College, PA: flash flood warnings | 33 | 23 | 30% | 65 | 78% | 59 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 5, 12:23 PM EST | Winter Storm Warning | CTP | 37 hr |
| Jan 5, 12:23 PM EST | Winter Weather Advisory | CTP | 34 hr |
| Jan 6, 4:27 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 8, 2:14 AM EST | Flood Watch | CTP | 49 hr |
| Jan 8, 4:08 AM EST | Wind Advisory | CTP | 62 hr |
| Jan 11, 3:31 PM EST | Winter Weather Advisory | CTP | 33 hr |
| Jan 12, 4:14 AM EST | Wind Advisory | CTP | 41 hr |
| Jan 14, 2:34 AM EST | Wind Advisory | CTP | 14 hr |
| Jan 14, 8:07 AM EST | Snow Squall Warning | CTP | 23 min |
| Jan 14, 8:25 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 14, 8:35 AM EST | Snow Squall Warning | CTP | 25 min |
| Jan 14, 8:58 AM EST | Snow Squall Warning | CTP | 32 min |
| Jan 14, 9:34 AM EST | Special Weather Statement | CTP | 56 min |
| Jan 14, 10:13 AM EST | Snow Squall Warning | CTP | 32 min |
| Jan 15, 4:01 AM EST | Winter Weather Advisory | CTP | 34 hr |
| Jan 22, 10:03 AM EST | Winter Weather Advisory | CTP | 33 hr |
| Jan 24, 5:45 PM EST | Dense Fog Advisory | CTP | 16 hr |
| Jan 25, 10:43 AM EST | Dense Fog Advisory | CTP | 22 hr |
| Jan 27, 2:49 PM EST | Winter Weather Advisory | CTP | 32 hr |
| Feb 10, 2:46 PM EST | Winter Storm Watch | CTP | 48 hr |
| Feb 11, 2:49 PM EST | Winter Storm Warning | CTP | 43 hr |
| Feb 12, 2:15 PM EST | Winter Weather Advisory | CTP | 21 hr |
| Feb 15, 3:50 PM EST | Wind Advisory | CTP | 18 hr |
| Feb 16, 12:51 AM EST | Special Weather Statement | CTP | 24 min |
| Feb 17, 11:34 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 27, 2:47 PM EST | Wind Advisory | CTP | 37 hr |
| Mar 9, 3:20 AM EST | Wind Advisory | CTP | 62 hr |
| Mar 9, 4:41 PM EST | Areal Flood Advisory | CTP | 2 hr |
| Mar 10, 12:13 PM EDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 20, 9:03 AM EDT | Special Weather Statement | CTP | 57 min |
| Mar 20, 10:03 AM EDT | Special Weather Statement | CTP | 57 min |
| Mar 20, 12:00 PM EDT | Special Weather Statement | CTP | 60 min |
| Mar 20, 2:00 PM EDT | Special Weather Statement | CTP | 60 min |
| Mar 23, 4:56 AM EDT | Winter Weather Advisory | CTP | 9 hr |
| Apr 1, 2:08 PM EDT | Flood Watch | CTP | 60 hr |
| Apr 3, 8:43 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Apr 12, 10:25 AM EDT | Wind Advisory | CTP | 32 hr |
| Apr 14, 3:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 14, 4:58 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 14, 5:38 PM EDT | Severe Thunderstorm Warning | CTP | 52 min |
| Apr 30, 1:12 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 30, 1:58 PM EDT | Special Weather Statement | CTP | 32 min |
| May 16, 6:04 AM EDT | Dense Fog Advisory | CTP | 3 hr |
| May 20, 5:18 AM EDT | Dense Fog Advisory | CTP | 4 hr |
| May 22, 1:37 PM EDT | Special Weather Statement | CTP | 23 min |
| May 22, 1:59 PM EDT | Special Weather Statement | CTP | 46 min |
| May 22, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 22, 3:17 PM EDT | Special Weather Statement | CTP | 28 min |
| May 22, 4:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 5:12 PM EDT | Severe Thunderstorm Warning | CTP | 78 min |
| May 26, 12:09 AM EDT | Dense Fog Advisory | CTP | 10 hr |
| May 27, 11:53 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 30, 2:01 PM EDT | Frost Advisory | CTP | 18 hr |
| Jun 14, 12:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 16, 3:20 PM EDT | Heat Advisory | CTP | 7 days |
| Jun 17, 6:34 PM EDT | Special Weather Statement | CTP | 56 min |
| Jun 17, 7:01 PM EDT | Special Weather Statement | CTP | 44 min |
| Jun 17, 7:48 PM EDT | Special Weather Statement | CTP | 42 min |
| Jun 17, 8:50 PM EDT | Severe Thunderstorm Warning | CTP | 55 min |
| Jun 18, 2:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 20, 2:15 PM EDT | Severe Thunderstorm Warning | CTP | 60 min |
| Jun 20, 2:54 PM EDT | Special Weather Statement | CTP | 51 min |
| Jun 20, 3:42 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Jun 21, 11:38 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 5:05 PM EDT | Special Weather Statement | CTP | 25 min |
| Jun 22, 6:12 PM EDT | Severe Thunderstorm Warning | CTP | 48 min |
| Jun 23, 1:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 23, 2:06 PM EDT | Special Weather Statement | CTP | 24 min |
| Jun 23, 2:20 PM EDT | Severe Thunderstorm Warning | CTP | 25 min |
| Jun 23, 4:07 PM EDT | Special Weather Statement | CTP | 23 min |
| Jun 23, 4:33 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 23, 4:58 PM EDT | Special Weather Statement | CTP | 47 min |
| Jun 23, 7:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jun 24, 11:50 AM EDT | Special Weather Statement | CTP | 85 min |
| Jun 26, 12:32 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 1:11 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 26, 3:13 PM EDT | Severe Thunderstorm Warning | CTP | 47 min |
| Jun 26, 4:16 PM EDT | Severe Thunderstorm Warning | CTP | 29 min |
| Jun 26, 4:28 PM EDT | Severe Thunderstorm Warning | CTP | 47 min |
| Jun 26, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | 46 min |
| Jun 26, 5:15 PM EDT | Severe Thunderstorm Warning | CTP | 30 min |
| Jun 29, 3:42 AM EDT | Flood Watch | CTP | 15 hr |
| Jun 29, 1:11 PM EDT | Tornado Watch | SPC | 7 hr |
| Jul 10, 12:06 PM EDT | Tornado Watch | SPC | 11 hr |
| Jul 10, 2:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 2:46 PM EDT | Tornado Warning | CTP | 29 min |
| Jul 10, 3:39 PM EDT | Severe Thunderstorm Warning | CTP | 51 min |
| Jul 10, 3:49 PM EDT | Tornado Warning | CTP | 26 min |
| Jul 15, 11:52 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 15, 12:21 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 15, 4:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 15, 4:40 PM EDT | Severe Thunderstorm Warning | CTP | 65 min |
| Jul 15, 5:27 PM EDT | Severe Thunderstorm Warning | CTP | 93 min |
| Jul 15, 5:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 16, 10:33 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 16, 11:05 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 16, 1:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jul 22, 3:21 PM EDT | Areal Flood Advisory | CTP | 54 min |
| Jul 24, 5:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 24, 6:37 PM EDT | Special Weather Statement | CTP | 23 min |
| Jul 30, 12:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 1, 3:40 PM EDT | Special Weather Statement | BGM | 35 min |
| Aug 1, 3:56 PM EDT | Special Weather Statement | CTP | 19 min |
| Aug 1, 4:13 PM EDT | Special Weather Statement | CTP | 32 min |
| Aug 3, 12:14 PM EDT | Flood Watch | CTP | 9 hr |
| Aug 3, 1:58 PM EDT | Special Weather Statement | CTP | 32 min |
| Aug 5, 12:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Aug 5, 1:21 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 5, 3:25 PM EDT | Special Weather Statement | CTP | 35 min |
| Aug 5, 4:25 PM EDT | Special Weather Statement | CTP | 35 min |
| Aug 5, 4:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Aug 5, 5:06 PM EDT | Special Weather Statement | CTP | 39 min |
| Aug 7, 3:24 PM EDT | Flood Watch | CTP | 48 hr |
| Aug 9, 7:52 AM EDT | Flash Flood Warning | CTP | 2 hr |
| Aug 9, 8:54 AM EDT | Flash Flood Warning | CTP | 6 hr |
| Aug 9, 9:30 AM EDT | Areal Flood Warning | CTP | 11 hr |
| Aug 9, 9:54 AM EDT | Areal Flood Warning | CTP | 10 hr |
| Aug 9, 10:58 AM EDT | Flash Flood Warning | CTP | 6 hr |
| Aug 9, 1:31 PM EDT | River Flood Warning | CTP | 3 hr |
| Aug 10, 5:19 AM EDT | Special Weather Statement | CTP | 116 min |
| Aug 17, 4:59 AM EDT | Flood Watch | CTP | 42 hr |
| Aug 18, 3:07 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 18, 5:33 AM EDT | Areal Flood Advisory | CTP | 117 min |
| Aug 18, 11:01 AM EDT | Areal Flood Advisory | CTP | 119 min |
| Sep 4, 7:07 AM EDT | Special Weather Statement | CTP | 83 min |
| Sep 5, 4:46 AM EDT | Special Weather Statement | CTP | 4 hr |
| Sep 9, 8:13 PM EDT | Special Weather Statement | CTP | 32 min |
| Sep 21, 2:37 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 21, 6:32 PM EDT | Areal Flood Advisory | CTP | 118 min |
| Sep 21, 6:49 PM EDT | Severe Thunderstorm Warning | CTP | 41 min |
| Sep 21, 7:02 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Sep 21, 7:15 PM EDT | Severe Thunderstorm Warning | CTP | 45 min |
| Sep 21, 7:55 PM EDT | Severe Thunderstorm Warning | CTP | 50 min |
| Sep 21, 8:40 PM EDT | Severe Thunderstorm Warning | CTP | 50 min |
| Oct 2, 10:27 PM EDT | Dense Fog Advisory | CTP | 12 hr |
| Oct 9, 1:17 PM EDT | Frost Advisory | CTP | 20 hr |
| Oct 10, 3:04 AM EDT | Frost Advisory | CTP | 30 hr |
| Oct 14, 2:36 AM EDT | Freeze Watch | CTP | 12 hr |
| Oct 14, 2:34 PM EDT | Frost Advisory | CTP | 18 hr |
| Oct 16, 1:44 PM EDT | Freeze Warning | CTP | 19 hr |
| Nov 20, 4:14 AM EST | Winter Storm Watch | CTP | 33 hr |
| Nov 20, 11:39 AM EST | Winter Storm Warning | CTP | 59 hr |
| Nov 27, 2:51 PM EST | Winter Weather Advisory | CTP | 22 hr |
| Dec 3, 2:37 PM EST | Wind Advisory | CTP | 52 hr |
| Dec 4, 4:21 AM EST | Winter Weather Advisory | CTP | 57 hr |
| Dec 5, 4:38 AM EST | Special Weather Statement | CTP | 67 min |
| Dec 5, 9:50 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 9, 9:44 PM EST | Dense Fog Advisory | CTP | 11 hr |
| Dec 12, 4:28 AM EST | Special Weather Statement | CTP | 62 min |
| Dec 12, 5:42 AM EST | Wind Advisory | CTP | 9 hr |
| Dec 14, 3:30 AM EST | Winter Weather Advisory | CTP | 55 hr |
| Dec 27, 3:00 AM EST | Winter Weather Advisory | CTP | 27 hr |
| Dec 28, 5:40 PM EST | Dense Fog Advisory | CTP | 15 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 | 18 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 26 |
| Special Weather Statement | 33 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 4 |
| River Flood Warning | 1 |
| Flood Watch | 6 |
| Areal Flood Advisory | 8 |
| Winter | |
| Snow Squall Warning | 4 |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 11 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 9 |
| 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 archive20232025
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.