Alert archive / Pennsylvania / Potter County
Weather alerts in Potter County, Pennsylvania, 2018
122 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Potter County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 122
- Warnings
- 25
- Watches
- 18
- Advisories
- 32
- Busiest month
- July21 alerts
- Busiest day
- October 2, 201810 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 3 tornado warnings covering Potter County in 2018 had a tornado report inside them.
Potter County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 7 | 5 | 29% | 2 | 100% | 34 min |
| Flash flood warnings | 3 | 1 | 67% | 3 | 33% | 123 min |
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 11, 4:16 PM EST | Winter Storm Warning | CTP | 41 hr |
| Jan 12, 8:59 AM EST | Areal Flood Advisory | CTP | 3 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, 7:12 PM EST | Areal Flood Warning | CTP | 3 hr |
| Jan 12, 10:03 PM EST | Areal Flood Warning | 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 29, 4:32 AM EST | Winter Weather Advisory | CTP | 38 hr |
| Feb 1, 4:59 PM EST | Special Weather Statement | CTP | 2 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, 6:21 AM EST | Special Weather Statement | CTP | 54 min |
| 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 13, 10:50 PM EST | Special Weather Statement | CTP | 25 min |
| 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 1, 8:43 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 27, 5:00 AM EDT | Winter Weather Advisory | CTP | 12 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 4, 12:33 PM EDT | Special Weather Statement | CTP | 57 min |
| Apr 4, 1:37 PM EDT | Special Weather Statement | CTP | 53 min |
| 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, 5:09 PM EDT | Severe Thunderstorm Warning | CTP | 96 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, 11:43 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 15, 12:26 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 15, 12:43 PM EDT | Severe Thunderstorm Warning | CTP | 47 min |
| May 15, 12:46 PM EDT | Tornado Warning | CTP | 44 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, 6:27 PM EDT | Special Weather Statement | CTP | 33 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 18, 8:49 PM EDT | Special Weather Statement | CTP | 26 min |
| Jun 24, 2:51 PM EDT | Special Weather Statement | CTP | 54 min |
| Jul 2, 12:50 PM EDT | Special Weather Statement | CTP | 55 min |
| Jul 2, 1:03 PM EDT | Mesoscale Discussion | SPC | 72 min |
| Jul 2, 1:53 PM EDT | Special Weather Statement | CTP | 52 min |
| Jul 2, 4:41 PM EDT | Special Weather Statement | CTP | 19 min |
| Jul 2, 6:13 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| 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 16, 6:13 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Jul 16, 6:37 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jul 16, 7:26 PM EDT | Special Weather Statement | CTP | 64 min |
| Jul 16, 8:07 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 16, 8:32 PM EDT | Special Weather Statement | CTP | 58 min |
| Jul 16, 9:23 PM EDT | Flash Flood Warning | CTP | 112 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, 6:46 PM EDT | Special Weather Statement | CTP | 29 min |
| Jul 23, 10:39 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 28, 12:51 AM EDT | Special Weather Statement | CTP | 54 min |
| Aug 4, 2:59 AM EDT | Dense Fog Advisory | CTP | 6 hr |
| Aug 21, 6:40 PM EDT | Special Weather Statement | CTP | 35 min |
| Aug 29, 7:26 PM EDT | Special Weather Statement | CTP | 34 min |
| Aug 29, 7:51 PM EDT | Special Weather Statement | CTP | 39 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, 4:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 21, 7:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 21, 7:37 PM EDT | Severe Thunderstorm Warning | CTP | 83 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 23, 2:53 AM EDT | Special Weather Statement | CTP | 3 hr |
| Sep 23, 5:33 AM EDT | Special Weather Statement | CTP | 3 hr |
| Oct 2, 1:12 PM EDT | Flash Flood Watch | CTP | 9 hr |
| Oct 2, 1:20 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 2, 2:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 2, 2:55 PM EDT | Tornado Watch | SPC | 8 hr |
| 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, 5:27 PM EDT | Severe Thunderstorm Warning | CTP | 93 min |
| Oct 2, 7:24 PM EDT | Mesoscale Discussion | SPC | 81 min |
| Oct 6, 6:48 PM EDT | Special Weather Statement | CTP | 57 min |
| Oct 8, 3:30 AM EDT | Dense Fog Advisory | CTP | 7 hr |
| Oct 13, 1:13 PM EDT | Frost Advisory | CTP | 19 hr |
| Nov 2, 3:46 AM EDT | Special Weather Statement | CTP | 29 min |
| Nov 10, 7:40 AM EST | Special Weather Statement | CTP | 65 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 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 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.
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.