Alert archive / Pennsylvania / Potter County
Weather alerts in Potter County, Pennsylvania, 2008
113 weather alerts in 2008, 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 2008. Tap one for its archive.
- Alerts
- 113
- Warnings
- 23
- Watches
- 16
- Advisories
- 45
- Busiest month
- June23 alerts
- Busiest day
- June 16, 20089 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Potter County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 4 | 64% | 5 | 40% | 26 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 5 | 0 | 100% | 2 | 0% | |
| NWS State College, PA: severe thunderstorm warnings | 184 | 86 | 53% | 179 | 84% | 26 min |
| NWS State College, PA: flash flood warnings | 4 | 3 | 25% | 13 | 31% | 88 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, 8:53 PM EST | Snow and Blowing Snow Advisory | CTP | 30 hr |
| Jan 5, 3:04 PM EST | Freezing Rain Advisory | CTP | 7 hr |
| Jan 8, 3:19 PM EST | Wind Advisory | CTP | 19 hr |
| Jan 9, 3:50 AM EST | Mesoscale Discussion | SPC | 115 min |
| Jan 19, 3:33 AM EST | Wind Chill Advisory | CTP | 54 hr |
| Jan 28, 2:01 PM EST | Freezing Rain Advisory | CTP | 20 hr |
| Jan 28, 3:25 PM EST | High Wind Watch | CTP | 19 hr |
| Jan 29, 10:36 AM EST | High Wind Warning | CTP | 25 hr |
| Jan 29, 10:36 AM EST | Wind Advisory | CTP | 29 hr |
| Jan 31, 2:17 PM EST | Winter Storm Warning | CTP | 29 hr |
| Feb 1, 7:36 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 3, 10:22 PM EST | Winter Weather Advisory | CTP | 12 hr |
| Feb 5, 3:45 AM EST | Flood Watch | CTP | 39 hr |
| Feb 6, 2:55 AM EST | Dense Fog Advisory | CTP | 5 hr |
| Feb 6, 3:58 PM EST | Winter Weather Advisory | CTP | 6 hr |
| Feb 9, 4:06 AM EST | Wind Advisory | CTP | 42 hr |
| Feb 10, 3:45 AM EST | Wind Chill Advisory | CTP | 30 hr |
| Feb 10, 12:25 PM EST | Snow and Blowing Snow Advisory | CTP | 22 hr |
| Feb 11, 3:59 AM EST | Winter Storm Watch | CTP | 12 hr |
| Feb 11, 3:58 PM EST | Winter Weather Advisory | CTP | 44 hr |
| Feb 12, 1:06 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 12, 7:41 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 17, 7:40 AM EST | Freezing Rain Advisory | CTP | 3 hr |
| Feb 21, 2:45 PM EST | Winter Weather Advisory | CTP | 42 hr |
| Feb 25, 4:02 AM EST | Winter Storm Watch | CTP | 11 hr |
| Feb 25, 3:15 PM EST | Winter Storm Warning | CTP | 36 hr |
| Feb 29, 4:24 AM EST | Snow Advisory | CTP | 24 hr |
| Mar 3, 5:10 AM EST | Winter Storm Watch | CTP | 10 hr |
| Mar 3, 5:25 AM EST | Flood Watch | CTP | 54 hr |
| Mar 3, 3:12 PM EST | Ice Storm Warning | CTP | 40 hr |
| Mar 4, 9:08 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 6, 3:29 PM EST | Winter Storm Watch | CTP | 12 hr |
| Mar 7, 3:48 AM EST | Winter Storm Warning | CTP | 47 hr |
| Mar 7, 3:48 AM EST | Winter Weather Advisory | CTP | 47 hr |
| Mar 8, 6:16 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 8, 10:04 AM EST | Wind Advisory | CTP | 17 hr |
| Mar 27, 4:05 AM EDT | Winter Weather Advisory | CTP | 30 hr |
| Mar 30, 3:45 PM EDT | Winter Weather Advisory | CTP | 18 hr |
| Apr 19, 4:56 PM EDT | Red Flag Warning | CTP | 6 hr |
| Apr 26, 2:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 24, 4:04 AM EDT | Frost Advisory | CTP | 29 hr |
| May 27, 11:20 AM EDT | Mesoscale Discussion | SPC | 115 min |
| May 27, 11:59 AM EDT | Frost Advisory | CTP | 20 hr |
| May 28, 3:16 PM EDT | Freeze Warning | CTP | 17 hr |
| May 29, 2:14 PM EDT | Frost Advisory | CTP | 18 hr |
| May 31, 2:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| May 31, 5:34 PM EDT | Mesoscale Discussion | SPC | 26 min |
| May 31, 6:14 PM EDT | Severe Thunderstorm Warning | CTP | 31 min |
| Jun 5, 2:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 13, 4:56 PM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Jun 16, 10:19 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 11:28 AM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 16, 2:03 PM EDT | Severe Thunderstorm Warning | CTP | 42 min |
| Jun 16, 2:12 PM EDT | Severe Thunderstorm Warning | CTP | 63 min |
| Jun 16, 2:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 16, 2:56 PM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Jun 16, 5:22 PM EDT | Severe Thunderstorm Warning | CTP | 53 min |
| Jun 16, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | 74 min |
| Jun 16, 5:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 21, 1:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 21, 3:14 PM EDT | Severe Thunderstorm Warning | CTP | 46 min |
| Jun 22, 2:24 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 23, 11:10 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 23, 2:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 26, 8:56 PM EDT | Severe Thunderstorm Warning | CTP | 33 min |
| Jun 28, 6:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 28, 6:31 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 29, 12:11 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 29, 4:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 29, 5:56 PM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Jun 29, 7:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 7, 6:46 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 20, 12:35 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 3:59 AM EDT | Dense Fog Advisory | CTP | 5 hr |
| Jul 23, 1:28 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 23, 2:12 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 24, 1:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 10:16 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 26, 4:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 2, 5:21 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 2, 7:03 AM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| Aug 7, 11:34 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 14, 4:50 PM EDT | Wind Advisory | CTP | 11 hr |
| Sep 14, 8:18 PM EDT | High Wind Warning | CTP | 8 hr |
| Sep 17, 3:33 PM EDT | Freeze Watch | CTP | 15 hr |
| Sep 18, 6:12 AM EDT | Frost Advisory | CTP | 26 hr |
| Sep 22, 2:04 PM EDT | Frost Advisory | CTP | 18 hr |
| Oct 3, 10:00 PM EDT | Frost Advisory | CTP | 11 hr |
| Oct 3, 11:20 PM EDT | Freeze Warning | CTP | 10 hr |
| Oct 5, 5:19 AM EDT | Dense Fog Advisory | CTP | 4 hr |
| Nov 16, 10:55 AM EST | Lake Effect Snow Advisory | CTP | 32 hr |
| Nov 20, 3:00 PM EST | Winter Storm Watch | CTP | 16 hr |
| Nov 21, 6:31 AM EST | Winter Weather Advisory | CTP | 33 hr |
| Nov 24, 8:58 AM EST | Winter Weather Advisory | CTP | 19 hr |
| Nov 29, 2:52 PM EST | Winter Weather Advisory | CTP | 34 hr |
| Dec 10, 2:00 PM EST | Winter Weather Advisory | CTP | 44 hr |
| Dec 11, 3:44 AM EST | Winter Storm Warning | CTP | 30 hr |
| Dec 11, 1:52 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 16, 4:44 AM EST | Winter Weather Advisory | CTP | 31 hr |
| Dec 17, 3:34 PM EST | Winter Storm Watch | CTP | 25 hr |
| Dec 18, 4:04 PM EST | Winter Storm Warning | CTP | 26 hr |
| Dec 19, 7:22 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 20, 3:05 PM EST | Winter Weather Advisory | CTP | 24 hr |
| Dec 21, 2:41 PM EST | Wind Chill Advisory | CTP | 19 hr |
| Dec 23, 5:58 AM EST | Winter Weather Advisory | CTP | 29 hr |
| Dec 23, 2:55 PM EST | Ice Storm Warning | CTP | 22 hr |
| Dec 24, 12:50 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 24, 3:21 PM EST | Wind Advisory | CTP | 13 hr |
| Dec 26, 4:17 AM EST | Freezing Rain Advisory | CTP | 24 hr |
| Dec 27, 8:06 PM EST | Wind Advisory | CTP | 20 hr |
| Dec 30, 3:37 AM EST | Winter Weather Advisory | CTP | 45 hr |
| Dec 30, 2:26 PM EST | Wind Advisory | CTP | 35 hr |
| Dec 31, 12:52 AM EST | Mesoscale Discussion | SPC | 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 archive20072009
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.