Alert archive / Pennsylvania / Tioga County
Weather alerts in Tioga County, Pennsylvania, 2018
138 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 138
- Warnings
- 28
- Watches
- 21
- Advisories
- 36
- Busiest month
- July22 alerts
- Busiest day
- October 2, 201816 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 5 tornado warnings covering Tioga County in 2018 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.
Tioga County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 5 | 1 | 80% | 1 | 0% | |
| Severe thunderstorm warnings | 10 | 6 | 40% | 14 | 79% | 20 min |
| Flash flood warnings | 3 | 0 | 100% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 22 | 5 | 77% | 10 | 50% | 7 min |
| NWS State College, PA: severe thunderstorm warnings | 122 | 81 | 34% | 244 | 80% | 30 min |
| NWS State College, PA: flash flood warnings | 57 | 36 | 37% | 89 | 88% | 96 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 3, 3:29 AM EST | Wind Chill Watch | CTP | 24 hr |
| Jan 4, 3:46 AM EST | Wind Chill Warning | CTP | 62 hr |
| Jan 4, 3:46 AM EST | Wind Chill Advisory | CTP | 3 days |
| Jan 10, 3:07 PM EST | Winter Storm Watch | CTP | 38 hr |
| Jan 11, 4:34 AM EST | Flood Watch | CTP | 51 hr |
| Jan 12, 4:46 AM EST | Winter Weather Advisory | CTP | 29 hr |
| Jan 12, 1:23 PM EST | Areal Flood Advisory | CTP | 6 hr |
| Jan 12, 7:04 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 12, 7:24 PM EST | Areal Flood Advisory | CTP | 3 hr |
| Jan 13, 3:47 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 13, 1:21 PM EST | Wind Chill Advisory | CTP | 21 hr |
| Jan 15, 2:22 PM EST | Winter Weather Advisory | CTP | 41 hr |
| Jan 29, 4:32 AM EST | Winter Weather Advisory | CTP | 38 hr |
| Feb 1, 7:15 PM EST | Special Weather Statement | CTP | 90 min |
| Feb 3, 2:44 PM EST | Winter Weather Advisory | CTP | 42 hr |
| Feb 5, 2:40 PM EST | Winter Storm Watch | CTP | 24 hr |
| Feb 6, 2:41 PM EST | Winter Storm Warning | CTP | 27 hr |
| Feb 7, 5:28 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 7, 11:25 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 10, 2:38 PM EST | Winter Weather Advisory | CTP | 19 hr |
| Feb 11, 12:01 AM EST | Dense Fog Advisory | CTP | 10 hr |
| Feb 21, 2:14 PM EST | Winter Weather Advisory | CTP | 46 hr |
| Feb 22, 11:29 AM EST | Flood Watch | CTP | 68 hr |
| Feb 28, 3:10 PM EST | Winter Storm Watch | CTP | 25 hr |
| Mar 1, 3:48 PM EST | Winter Storm Warning | CTP | 23 hr |
| Mar 29, 2:28 AM EDT | Dense Fog Advisory | CTP | 8 hr |
| Apr 3, 3:25 PM EDT | Wind Advisory | CTP | 12 hr |
| Apr 4, 3:36 AM EDT | High Wind Warning | CTP | 16 hr |
| Apr 16, 1:45 PM EDT | Special Weather Statement | CTP | 45 min |
| Apr 18, 2:51 PM EDT | Winter Weather Advisory | CTP | 13 hr |
| May 2, 4:45 AM EDT | Red Flag Warning | CTP | 16 hr |
| May 4, 2:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| May 4, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 4, 4:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 4, 5:54 PM EDT | Severe Thunderstorm Warning | CTP | 81 min |
| May 10, 2:13 PM EDT | Special Weather Statement | CTP | 77 min |
| May 12, 2:13 PM EDT | Areal Flood Advisory | CTP | 5 hr |
| May 15, 8:16 AM EDT | Special Weather Statement | CTP | 44 min |
| May 15, 11:43 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 15, 12:26 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 15, 1:03 PM EDT | Special Weather Statement | CTP | 42 min |
| May 15, 1:14 PM EDT | Severe Thunderstorm Warning | CTP | 61 min |
| May 15, 1:25 PM EDT | Tornado Warning | CTP | 65 min |
| May 28, 2:16 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 3:30 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jun 13, 4:06 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 6:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 13, 6:54 PM EDT | Special Weather Statement | CTP | 66 min |
| Jun 13, 7:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 13, 7:31 PM EDT | Severe Thunderstorm Warning | CTP | 59 min |
| Jun 13, 7:57 PM EDT | Tornado Warning | CTP | 33 min |
| Jun 18, 9:24 PM EDT | Special Weather Statement | CTP | 36 min |
| Jun 29, 2:28 PM EDT | Heat Advisory | CTP | 4 days |
| Jul 2, 1:03 PM EDT | Mesoscale Discussion | SPC | 72 min |
| Jul 2, 3:13 PM EDT | Special Weather Statement | CTP | 47 min |
| Jul 2, 4:25 PM EDT | Special Weather Statement | CTP | 35 min |
| Jul 2, 5:46 PM EDT | Special Weather Statement | CTP | 44 min |
| Jul 4, 9:03 AM EDT | Areal Flood Advisory | CTP | 117 min |
| Jul 4, 9:54 AM EDT | Flash Flood Watch | CTP | 10 hr |
| Jul 4, 10:29 AM EDT | Areal Flood Advisory | CTP | 2 hr |
| Jul 4, 12:21 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jul 5, 4:17 AM EDT | Flash Flood Watch | CTP | 30 hr |
| Jul 14, 7:09 PM EDT | Special Weather Statement | CTP | 51 min |
| Jul 16, 9:23 PM EDT | Flash Flood Warning | CTP | 112 min |
| Jul 16, 9:33 PM EDT | Special Weather Statement | CTP | 42 min |
| Jul 16, 9:59 PM EDT | Special Weather Statement | CTP | 31 min |
| Jul 16, 10:04 PM EDT | Severe Thunderstorm Warning | CTP | 41 min |
| Jul 16, 11:47 PM EDT | Areal Flood Warning | CTP | 6 hr |
| Jul 23, 3:59 AM EDT | Flash Flood Watch | CTP | 4 days |
| Jul 23, 2:18 PM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| Jul 23, 7:18 PM EDT | Special Weather Statement | CTP | 57 min |
| Jul 23, 10:39 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 24, 12:07 AM EDT | Flash Flood Warning | CTP | 4 hr |
| Jul 24, 5:20 PM EDT | Areal Flood Advisory | CTP | 115 min |
| Jul 24, 5:58 PM EDT | Areal Flood Warning | CTP | 48 hr |
| Aug 1, 4:06 AM EDT | Flash Flood Watch | CTP | 3 days |
| Aug 3, 6:26 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 3, 1:43 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 4, 2:59 AM EDT | Dense Fog Advisory | CTP | 6 hr |
| Aug 11, 8:30 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 11, 10:54 AM EDT | Flash Flood Watch | CTP | 8 hr |
| Aug 13, 1:46 AM EDT | Flash Flood Watch | CTP | 43 hr |
| Aug 14, 2:11 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 29, 8:51 PM EDT | Special Weather Statement | CTP | 54 min |
| Sep 6, 12:05 PM EDT | Special Weather Statement | CTP | 40 min |
| Sep 6, 12:47 PM EDT | Special Weather Statement | CTP | 43 min |
| Sep 6, 1:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 6, 2:44 PM EDT | Special Weather Statement | CTP | 31 min |
| Sep 8, 3:33 AM EDT | Flood Watch | CTP | 64 hr |
| Sep 10, 10:19 AM EDT | Areal Flood Warning | CTP | 9 hr |
| Sep 16, 7:11 AM EDT | Dense Fog Advisory | CTP | 3 hr |
| Sep 17, 4:51 AM EDT | Flash Flood Watch | CTP | 31 hr |
| Sep 18, 2:02 AM EDT | Areal Flood Warning | CTP | 6 hr |
| Sep 21, 7:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 21, 8:58 PM EDT | Severe Thunderstorm Warning | CTP | 47 min |
| Sep 21, 9:22 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Sep 21, 10:46 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Sep 23, 2:53 AM EDT | Special Weather Statement | CTP | 3 hr |
| Sep 23, 5:33 AM EDT | Special Weather Statement | CTP | 3 hr |
| Sep 26, 2:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 2, 1:12 PM EDT | Flash Flood Watch | CTP | 9 hr |
| Oct 2, 1:59 PM EDT | Special Weather Statement | CTP | 61 min |
| Oct 2, 2:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 2, 2:48 PM EDT | Special Weather Statement | CTP | 42 min |
| Oct 2, 2:55 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 2, 3:03 PM EDT | Severe Thunderstorm Warning | CTP | 42 min |
| Oct 2, 3:24 PM EDT | Severe Thunderstorm Warning | CTP | 96 min |
| Oct 2, 3:59 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 2, 4:15 PM EDT | Tornado Warning | CTP | 45 min |
| Oct 2, 4:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 2, 4:48 PM EDT | Tornado Warning | CTP | 42 min |
| Oct 2, 4:54 PM EDT | Special Weather Statement | CTP | 36 min |
| Oct 2, 5:24 PM EDT | Severe Thunderstorm Warning | CTP | 36 min |
| Oct 2, 5:33 PM EDT | Tornado Warning | CTP | 42 min |
| Oct 2, 5:56 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 2, 7:24 PM EDT | Mesoscale Discussion | SPC | 81 min |
| Oct 6, 5:50 PM EDT | Special Weather Statement | CTP | 40 min |
| Oct 6, 6:48 PM EDT | Special Weather Statement | CTP | 57 min |
| Oct 13, 1:13 PM EDT | Frost Advisory | CTP | 19 hr |
| Nov 2, 3:46 AM EDT | Special Weather Statement | CTP | 29 min |
| Nov 2, 4:16 AM EDT | Special Weather Statement | CTP | 29 min |
| Nov 2, 4:47 AM EDT | Special Weather Statement | CTP | 28 min |
| Nov 14, 4:31 AM EST | Winter Storm Watch | CTP | 11 hr |
| Nov 14, 3:40 PM EST | Winter Storm Warning | CTP | 38 hr |
| Nov 15, 9:56 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 15, 4:39 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 15, 10:06 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 16, 3:56 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 23, 11:02 AM EST | Winter Weather Advisory | CTP | 27 hr |
| Nov 24, 10:08 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Nov 29, 1:26 PM EST | Winter Weather Advisory | CTP | 24 hr |
| Dec 2, 7:37 PM EST | Dense Fog Advisory | CTP | 8 hr |
| Dec 15, 3:18 PM EST | Winter Weather Advisory | CTP | 20 hr |
| Dec 19, 3:49 AM EST | Flood Watch | CTP | 69 hr |
| Dec 21, 4:07 PM EST | Special Weather Statement | CTP | 23 min |
| Dec 21, 4:15 PM EST | Severe Thunderstorm Warning | CTP | 45 min |
| Dec 21, 4:16 PM EST | Mesoscale Discussion | SPC | 59 min |
| Dec 30, 1:10 AM EST | Winter Weather Advisory | CTP | 6 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 | 10 |
| Tornado Warning | 5 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 24 |
| Special Weather Statement | 29 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 8 |
| Flood Watch | 4 |
| Areal Flood Advisory | 15 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 11 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Wind Chill Warning | 1 |
| Wind Chill Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.