Alert archive / Pennsylvania / Tioga County
Weather alerts in Tioga County, Pennsylvania, 2012
136 weather alerts in 2012, 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 2012. Tap one for its archive.
- Alerts
- 136
- Warnings
- 39
- Watches
- 20
- Advisories
- 22
- Busiest month
- July27 alerts
- Busiest day
- July 7, 20129 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 1 tornado warnings covering Tioga County in 2012 had a tornado report inside them.
Tioga County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 22 | 18 | 18% | 11 | 82% | 29 min |
| Flash flood warnings | 1 | 1 | 0% | 3 | 100% | 58 min |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 6 | 2 | 67% | 8 | 50% | 24 min |
| NWS State College, PA: severe thunderstorm warnings | 226 | 133 | 41% | 370 | 84% | 28 min |
| NWS State College, PA: flash flood warnings | 21 | 11 | 48% | 24 | 88% | 62 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 2, 9:08 AM EST | Special Weather Statement | CTP | 3 hr |
| Jan 12, 4:50 AM EST | Winter Weather Advisory | CTP | 41 hr |
| Jan 12, 2:36 PM EST | Wind Advisory | CTP | 28 hr |
| Jan 14, 1:29 PM EST | Special Weather Statement | CTP | 31 min |
| Jan 14, 2:33 PM EST | Special Weather Statement | CTP | 27 min |
| Jan 16, 4:10 AM EST | Winter Weather Advisory | CTP | 26 hr |
| Jan 17, 8:06 PM EST | Special Weather Statement | CTP | 54 min |
| Jan 19, 8:34 PM EST | Special Weather Statement | CTP | 86 min |
| Jan 20, 4:28 AM EST | Winter Weather Advisory | CTP | 30 hr |
| Jan 22, 3:09 AM EST | Freezing Rain Advisory | CTP | 33 hr |
| Jan 29, 6:17 PM EST | Special Weather Statement | CTP | 118 min |
| Feb 18, 8:38 AM EST | Special Weather Statement | CTP | 52 min |
| Feb 18, 1:36 PM EST | Special Weather Statement | CTP | 24 min |
| Feb 23, 2:05 PM EST | Winter Weather Advisory | CTP | 16 hr |
| Feb 23, 9:52 PM EST | Wind Advisory | CTP | 37 hr |
| Feb 23, 11:48 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 28, 3:04 PM EST | Winter Weather Advisory | CTP | 22 hr |
| Mar 4, 10:35 AM EST | Special Weather Statement | CTP | 55 min |
| Mar 8, 7:50 PM EST | Special Weather Statement | CTP | 40 min |
| Mar 20, 8:06 AM EDT | Special Weather Statement | CTP | 24 min |
| Apr 5, 4:06 PM EDT | Fire Weather Watch | CTP | 12 hr |
| Apr 6, 4:19 AM EDT | Red Flag Warning | CTP | 16 hr |
| Apr 6, 11:01 AM EDT | Red Flag Warning | CTP | 33 hr |
| Apr 7, 3:58 AM EDT | Fire Weather Watch | CTP | 16 hr |
| Apr 7, 8:27 PM EDT | Red Flag Warning | CTP | 24 hr |
| Apr 8, 4:49 AM EDT | Fire Weather Watch | CTP | 17 hr |
| Apr 8, 9:49 PM EDT | Red Flag Warning | CTP | 22 hr |
| Apr 16, 1:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 17, 5:50 AM EDT | Freeze Watch | CTP | 7 hr |
| Apr 17, 1:18 PM EDT | Freeze Warning | CTP | 20 hr |
| Apr 21, 4:17 PM EDT | Winter Storm Watch | CTP | 24 hr |
| Apr 22, 4:20 PM EDT | Winter Storm Warning | CTP | 34 hr |
| Apr 24, 7:00 PM EDT | Freeze Warning | CTP | 13 hr |
| Apr 26, 4:46 AM EDT | Freeze Watch | CTP | 10 hr |
| Apr 26, 2:39 PM EDT | Freeze Warning | CTP | 18 hr |
| Apr 27, 4:26 AM EDT | Freeze Watch | CTP | 5 hr |
| Apr 27, 9:40 AM EDT | Freeze Warning | CTP | 23 hr |
| Apr 28, 4:04 AM EDT | Freeze Watch | CTP | 11 hr |
| Apr 28, 2:34 PM EDT | Freeze Warning | CTP | 18 hr |
| Apr 29, 3:39 AM EDT | Freeze Watch | CTP | 6 hr |
| Apr 29, 9:51 AM EDT | Freeze Warning | CTP | 23 hr |
| May 2, 8:38 PM EDT | Severe Thunderstorm Warning | CTP | 52 min |
| May 2, 8:58 PM EDT | Severe Thunderstorm Warning | CTP | 62 min |
| May 2, 9:19 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| May 2, 9:56 PM EDT | Severe Thunderstorm Warning | CTP | 34 min |
| May 3, 5:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| May 4, 12:19 AM EDT | Mesoscale Discussion | SPC | 86 min |
| May 4, 1:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 10, 2:58 PM EDT | Frost Advisory | CTP | 17 hr |
| May 16, 2:09 PM EDT | Frost Advisory | CTP | 18 hr |
| May 16, 5:21 PM EDT | Special Weather Statement | CTP | 24 min |
| May 17, 1:05 PM EDT | Frost Advisory | CTP | 19 hr |
| May 28, 2:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| May 29, 12:01 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 29, 1:03 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 29, 1:32 PM EDT | Severe Thunderstorm Warning | CTP | 43 min |
| May 29, 2:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| May 29, 2:17 PM EDT | Severe Thunderstorm Warning | CTP | 58 min |
| May 29, 3:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 29, 3:13 PM EDT | Severe Thunderstorm Warning | CTP | 32 min |
| May 29, 3:36 PM EDT | Severe Thunderstorm Warning | CTP | 54 min |
| Jun 1, 5:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 1, 6:04 PM EDT | Tornado Watch | SPC | 5 hr |
| Jun 1, 7:31 PM EDT | Severe Thunderstorm Warning | CTP | 59 min |
| Jun 1, 8:38 PM EDT | Severe Thunderstorm Warning | CTP | 52 min |
| Jun 3, 6:10 PM EDT | Severe Thunderstorm Warning | CTP | 50 min |
| Jun 3, 6:59 PM EDT | Severe Thunderstorm Warning | CTP | 61 min |
| Jun 3, 7:40 PM EDT | Special Weather Statement | CTP | 35 min |
| Jun 3, 7:50 PM EDT | Severe Thunderstorm Warning | CTP | 40 min |
| Jun 29, 3:14 AM EDT | Special Weather Statement | CTP | 31 min |
| Jul 7, 11:02 AM EDT | Special Weather Statement | CTP | 88 min |
| Jul 7, 11:19 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 7, 11:36 AM EDT | Severe Thunderstorm Warning | CTP | 39 min |
| Jul 7, 11:41 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 7, 1:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 7, 1:52 PM EDT | Special Weather Statement | CTP | 83 min |
| Jul 7, 2:24 PM EDT | Severe Thunderstorm Warning | CTP | 66 min |
| Jul 7, 3:26 PM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Jul 7, 3:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 10:25 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 12:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 23, 1:24 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 26, 4:31 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 26, 5:46 AM EDT | Special Weather Statement | CTP | 29 min |
| Jul 26, 12:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 1:16 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 26, 2:51 PM EDT | Severe Thunderstorm Warning | CTP | 69 min |
| Jul 26, 3:22 PM EDT | Tornado Warning | CTP | 53 min |
| Jul 26, 3:29 PM EDT | Severe Thunderstorm Warning | CTP | 91 min |
| Jul 26, 3:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 28, 4:25 PM EDT | Severe Thunderstorm Warning | CTP | 65 min |
| Jul 31, 3:02 PM EDT | Special Weather Statement | CTP | 43 min |
| Jul 31, 3:59 PM EDT | Special Weather Statement | CTP | 31 min |
| Jul 31, 5:01 PM EDT | Special Weather Statement | CTP | 74 min |
| Jul 31, 7:34 PM EDT | Special Weather Statement | CTP | 26 min |
| Jul 31, 7:41 PM EDT | Areal Flood Advisory | CTP | 94 min |
| Jul 31, 7:56 PM EDT | Special Weather Statement | CTP | 34 min |
| Jul 31, 8:28 PM EDT | Special Weather Statement | CTP | 32 min |
| Aug 4, 5:57 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Aug 5, 2:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Aug 9, 12:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 9, 12:54 PM EDT | Severe Thunderstorm Warning | CTP | 66 min |
| Aug 9, 2:00 PM EDT | Special Weather Statement | CTP | 60 min |
| Aug 9, 2:45 PM EDT | Special Weather Statement | BGM | 45 min |
| Sep 4, 3:48 PM EDT | Special Weather Statement | CTP | 27 min |
| Sep 6, 4:11 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Sep 6, 5:07 PM EDT | Flash Flood Warning | CTP | 6 hr |
| Sep 6, 5:24 PM EDT | Special Weather Statement | CTP | 66 min |
| Sep 6, 6:11 PM EDT | Special Weather Statement | CTP | 34 min |
| Sep 6, 6:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Sep 6, 8:25 PM EDT | Special Weather Statement | CTP | 65 min |
| Sep 6, 10:54 PM EDT | Areal Flood Advisory | CTP | 6 hr |
| Sep 8, 8:42 AM EDT | Mesoscale Discussion | SPC | 93 min |
| Sep 8, 11:38 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Sep 8, 11:49 AM EDT | Severe Thunderstorm Warning | CTP | 56 min |
| Sep 8, 12:15 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Sep 8, 12:32 PM EDT | Severe Thunderstorm Warning | CTP | 58 min |
| Sep 8, 1:29 PM EDT | Severe Thunderstorm Warning | CTP | 61 min |
| Oct 7, 4:54 AM EDT | Frost Advisory | CTP | 28 hr |
| Oct 8, 5:31 AM EDT | Freeze Watch | CTP | 9 hr |
| Oct 8, 2:13 PM EDT | Freeze Warning | CTP | 18 hr |
| Oct 11, 3:42 AM EDT | Freeze Watch | CTP | 31 hr |
| Oct 12, 10:15 AM EDT | Freeze Warning | CTP | 22 hr |
| Oct 27, 4:39 AM EDT | Flood Watch | CTP | 3 days |
| Oct 27, 3:05 PM EDT | High Wind Watch | CTP | 13 hr |
| Oct 28, 4:11 AM EDT | High Wind Warning | CTP | 48 hr |
| Oct 30, 4:18 AM EDT | Wind Advisory | CTP | 6 hr |
| Dec 6, 2:53 PM EST | Freezing Rain Advisory | CTP | 20 hr |
| Dec 7, 3:44 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 20, 12:26 PM EST | Winter Weather Advisory | CTP | 49 hr |
| Dec 21, 5:37 AM EST | Wind Advisory | CTP | 37 hr |
| Dec 24, 4:00 PM EST | Winter Storm Watch | CTP | 22 hr |
| Dec 25, 2:09 PM EST | Winter Storm Warning | CTP | 40 hr |
| Dec 26, 11:40 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 26, 2:14 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 28, 2:57 AM EST | Winter Weather Advisory | CTP | 58 hr |
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 archive20112013
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.