Alert archive / Pennsylvania / Warren County
Weather alerts in Warren County, Pennsylvania, 2019
119 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Warren County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 119
- Warnings
- 16
- Watches
- 14
- Advisories
- 43
- Busiest month
- July16 alerts
- Busiest day
- April 14, 20197 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 1 tornado warnings covering Warren County in 2019 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 15 minutes after it went out.
Warren County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 1 | 100% | 15 min |
| Severe thunderstorm warnings | 6 | 4 | 33% | 17 | 53% | 21 min |
| Flash flood warnings | 2 | 1 | 50% | 1 | 100% | 57 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 21 | 6 | 71% | 17 | 35% | 7 min |
| NWS State College, PA: severe thunderstorm warnings | 284 | 177 | 38% | 468 | 81% | 22 min |
| NWS State College, PA: flash flood warnings | 22 | 12 | 45% | 30 | 87% | 49 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 |
|---|---|---|---|
| Dec 31, 10:01 PM EST | Wind Advisory | CTP | 12 hr |
| Jan 7, 4:04 AM EST | Winter Weather Advisory | CTP | 32 hr |
| Jan 8, 4:09 AM EST | Winter Weather Advisory | CTP | 57 hr |
| Jan 8, 4:42 PM EST | Special Weather Statement | CTP | 63 min |
| Jan 16, 4:17 AM EST | Winter Weather Advisory | CTP | 6 hr |
| Jan 17, 4:17 AM EST | Winter Storm Watch | CTP | 33 hr |
| Jan 18, 4:45 AM EST | Winter Storm Warning | CTP | 53 hr |
| Jan 19, 6:24 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 19, 9:33 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 20, 4:06 AM EST | Wind Chill Warning | CTP | 39 hr |
| Jan 22, 12:45 PM EST | Winter Weather Advisory | CTP | 30 hr |
| Jan 26, 2:52 PM EST | Winter Weather Advisory | CTP | 20 hr |
| Jan 28, 3:13 PM EST | Wind Chill Watch | CTP | 23 hr |
| Jan 29, 2:31 PM EST | Wind Chill Warning | CTP | 45 hr |
| Jan 29, 2:31 PM EST | Wind Chill Advisory | CTP | 63 hr |
| Feb 7, 1:37 AM EST | Dense Fog Advisory | CTP | 9 hr |
| Feb 7, 10:30 AM EST | Flood Watch | CTP | 18 hr |
| Feb 10, 12:25 PM EST | Winter Weather Advisory | CTP | 64 hr |
| Feb 11, 3:50 AM EST | Winter Weather Advisory | CTP | 9 hr |
| Feb 12, 4:16 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 17, 4:05 AM EST | Winter Weather Advisory | CTP | 33 hr |
| Feb 19, 2:34 PM EST | Winter Weather Advisory | CTP | 37 hr |
| Feb 20, 6:32 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 22, 4:12 AM EST | High Wind Watch | CTP | 34 hr |
| Feb 23, 2:24 PM EST | High Wind Warning | CTP | 47 hr |
| Feb 24, 3:29 AM EST | Winter Weather Advisory | CTP | 31 hr |
| Feb 25, 12:54 PM EST | Wind Advisory | CTP | 6 hr |
| Feb 26, 2:40 PM EST | Winter Weather Advisory | CTP | 33 hr |
| Mar 16, 10:53 AM EDT | Special Weather Statement | CTP | 37 min |
| Apr 2, 10:53 AM EDT | Fire Weather Watch | CTP | 16 hr |
| Apr 3, 3:07 AM EDT | Red Flag Warning | CTP | 18 hr |
| Apr 14, 4:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Apr 14, 5:22 PM EDT | Flash Flood Watch | CTP | 10 hr |
| Apr 14, 5:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 14, 6:46 PM EDT | Tornado Watch | SPC | 8 hr |
| Apr 14, 7:13 PM EDT | Special Weather Statement | CTP | 32 min |
| Apr 14, 7:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Apr 14, 7:52 PM EDT | Severe Thunderstorm Warning | CTP | 53 min |
| Apr 14, 8:03 PM EDT | Tornado Warning | CTP | 57 min |
| Apr 14, 8:41 PM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Apr 14, 8:44 PM EDT | Areal Flood Advisory | CTP | 4 hr |
| Apr 20, 3:43 PM EDT | Special Weather Statement | CTP | 32 min |
| Apr 20, 4:33 PM EDT | Special Weather Statement | CTP | 42 min |
| May 6, 3:15 AM EDT | Dense Fog Advisory | CTP | 6 hr |
| May 14, 3:34 PM EDT | Frost Advisory | CTP | 16 hr |
| May 23, 8:53 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 9:37 AM EDT | Severe Thunderstorm Warning | CTP | 53 min |
| May 23, 9:39 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 23, 7:10 PM EDT | Mesoscale Discussion | SPC | 65 min |
| May 25, 12:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 25, 4:50 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 25, 6:57 PM EDT | Special Weather Statement | CTP | 33 min |
| May 28, 1:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| May 28, 1:48 PM EDT | Tornado Watch | SPC | 8 hr |
| May 28, 3:22 PM EDT | Special Weather Statement | CTP | 23 min |
| May 28, 4:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 2:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 2:57 PM EDT | Special Weather Statement | CTP | 33 min |
| Jun 1, 3:55 PM EDT | Special Weather Statement | CTP | 50 min |
| Jun 1, 4:32 PM EDT | Severe Thunderstorm Warning | CTP | 28 min |
| Jun 3, 2:44 PM EDT | Frost Advisory | CTP | 17 hr |
| Jun 19, 10:21 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jun 19, 10:39 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jun 20, 1:47 AM EDT | Areal Flood Advisory | CTP | 118 min |
| Jun 20, 4:17 AM EDT | Flash Flood Watch | CTP | 24 hr |
| Jun 20, 9:51 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jun 20, 10:51 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jun 26, 1:56 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 4, 8:00 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Jul 4, 8:28 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jul 4, 11:30 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 5, 1:54 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Jul 6, 11:49 AM EDT | Flash Flood Watch | CTP | 8 hr |
| Jul 6, 1:28 PM EDT | Special Weather Statement | CTP | 62 min |
| Jul 18, 3:02 PM EDT | Heat Advisory | CTP | 53 hr |
| Jul 19, 1:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 2:29 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 19, 4:20 PM EDT | Special Weather Statement | CTP | 55 min |
| Jul 19, 4:40 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 5:10 PM EDT | Severe Thunderstorm Warning | CTP | 65 min |
| Jul 19, 5:37 PM EDT | Areal Flood Advisory | CTP | 113 min |
| Jul 19, 6:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 20, 3:31 AM EDT | Special Weather Statement | CTP | 59 min |
| Jul 28, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 2, 8:12 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 3, 12:40 AM EDT | Dense Fog Advisory | CTP | 8 hr |
| Aug 8, 12:29 PM EDT | Special Weather Statement | CTP | 46 min |
| Aug 8, 12:37 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 8, 1:08 PM EDT | Special Weather Statement | CTP | 37 min |
| Aug 15, 1:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 17, 1:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 17, 1:42 PM EDT | Special Weather Statement | CTP | 63 min |
| Aug 17, 2:42 PM EDT | Special Weather Statement | CTP | 63 min |
| Aug 17, 2:47 PM EDT | Severe Thunderstorm Warning | CTP | 43 min |
| Aug 18, 8:16 AM EDT | Special Weather Statement | CTP | 44 min |
| Aug 19, 2:06 AM EDT | Special Weather Statement | CTP | 69 min |
| Aug 21, 6:42 AM EDT | Special Weather Statement | CTP | 33 min |
| Sep 1, 7:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Sep 3, 5:27 AM EDT | Dense Fog Advisory | CTP | 4 hr |
| Sep 4, 4:38 AM EDT | Special Weather Statement | CTP | 37 min |
| Sep 11, 3:08 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 11, 6:11 PM EDT | Special Weather Statement | CTP | 34 min |
| Oct 4, 6:08 AM EDT | Frost Advisory | CTP | 27 hr |
| Oct 8, 3:15 AM EDT | Dense Fog Advisory | CTP | 6 hr |
| Oct 12, 3:06 AM EDT | Frost Advisory | CTP | 31 hr |
| Oct 12, 10:42 PM EDT | Freeze Warning | CTP | 11 hr |
| Oct 31, 4:32 AM EDT | Wind Advisory | CTP | 29 hr |
| Nov 11, 4:14 AM EST | Winter Weather Advisory | CTP | 27 hr |
| Nov 26, 2:32 PM EST | Wind Advisory | CTP | 45 hr |
| Nov 26, 2:32 PM EST | Winter Weather Advisory | CTP | 38 hr |
| Nov 29, 2:17 PM EST | Winter Weather Advisory | CTP | 71 hr |
| Nov 30, 7:29 PM EST | Winter Weather Advisory | CTP | 63 hr |
| Dec 1, 5:45 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 4, 3:10 AM EST | Winter Weather Advisory | CTP | 30 hr |
| Dec 15, 4:57 PM EST | Special Weather Statement | CTP | 33 min |
| Dec 16, 4:24 AM EST | Winter Weather Advisory | CTP | 31 hr |
| Dec 18, 3:39 AM EST | Winter Weather Advisory | CTP | 24 hr |
| Dec 31, 12:55 PM EST | Special Weather Statement | CTP | 80 min |
| Dec 31, 1:20 PM EST | Snow Squall Warning | CTP | 55 min |
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 archive20182020
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.