Alert archive / Pennsylvania / Columbia County
Weather alerts in Columbia County, Pennsylvania, 2012
144 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Columbia County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 144
- Warnings
- 43
- Watches
- 26
- Advisories
- 22
- Busiest month
- July31 alerts
- Busiest day
- July 26, 20128 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 Columbia County in 2012 had a tornado report inside them.
Columbia 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 | 24 | 14 | 42% | 8 | 75% | 20 min |
| Flash flood warnings | 3 | 0 | 100% | 2 | 0% |
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, 2:36 PM EST | Wind Advisory | CTP | 28 hr |
| Jan 14, 4:42 PM EST | Special Weather Statement | CTP | 78 min |
| Jan 14, 9:39 PM EST | Special Weather Statement | CTP | 51 min |
| Jan 14, 10:37 PM EST | Special Weather Statement | CTP | 113 min |
| Jan 16, 4:10 AM EST | Winter Weather Advisory | CTP | 26 hr |
| Jan 20, 4:28 AM EST | Winter Weather Advisory | CTP | 30 hr |
| Jan 21, 12:59 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 22, 3:09 AM EST | Freezing Rain Advisory | CTP | 33 hr |
| Jan 29, 7:40 PM EST | Special Weather Statement | CTP | 110 min |
| Feb 23, 9:52 PM EST | Wind Advisory | CTP | 37 hr |
| Apr 2, 1:34 PM EDT | Freeze Warning | CTP | 18 hr |
| Apr 5, 2:10 PM EDT | Freeze Warning | CTP | 18 hr |
| 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 6, 11:05 AM EDT | Freeze Warning | CTP | 21 hr |
| Apr 7, 3:58 AM EDT | Fire Weather Watch | CTP | 16 hr |
| Apr 7, 2:41 PM EDT | Freeze Warning | CTP | 17 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 11, 4:45 AM EDT | Freeze Watch | CTP | 10 hr |
| Apr 11, 2:21 PM EDT | Freeze Watch | CTP | 13 hr |
| Apr 12, 3:48 AM EDT | Freeze Warning | CTP | 29 hr |
| Apr 24, 7:00 PM EDT | Frost Advisory | CTP | 13 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 3, 5:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| May 4, 3:22 AM EDT | Special Weather Statement | CTP | 68 min |
| May 4, 1:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 2:55 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| May 26, 1:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| May 26, 2:08 PM EDT | Mesoscale Discussion | SPC | 37 min |
| May 26, 2:29 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 26, 3:43 PM EDT | Special Weather Statement | CTP | 32 min |
| May 26, 4:46 PM EDT | Special Weather Statement | CTP | 74 min |
| May 26, 5:35 PM EDT | Flash Flood Warning | CTP | 85 min |
| May 26, 6:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 27, 5:21 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 27, 7:46 PM EDT | Special Weather Statement | CTP | 44 min |
| May 27, 7:56 PM EDT | Severe Thunderstorm Warning | CTP | 81 min |
| May 27, 8:23 PM EDT | Areal Flood Advisory | CTP | 112 min |
| May 27, 9:09 PM EDT | Flash Flood Warning | CTP | 3 hr |
| May 29, 1:03 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 29, 2:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| May 29, 3:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 29, 3:36 PM EDT | Severe Thunderstorm Warning | CTP | 54 min |
| May 29, 3:43 PM EDT | Severe Thunderstorm Warning | CTP | 77 min |
| May 29, 4:26 PM EDT | Severe Thunderstorm Warning | CTP | 34 min |
| May 29, 4:40 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jun 1, 5:02 PM EDT | Flash Flood Watch | CTP | 8 hr |
| Jun 1, 6:04 PM EDT | Tornado Watch | SPC | 5 hr |
| Jun 1, 8:38 PM EDT | Severe Thunderstorm Warning | CTP | 52 min |
| Jun 1, 8:47 PM EDT | Severe Thunderstorm Warning | CTP | 58 min |
| Jun 3, 3:11 PM EDT | Special Weather Statement | CTP | 64 min |
| Jun 3, 4:46 PM EDT | Severe Thunderstorm Warning | CTP | 59 min |
| Jun 3, 7:50 PM EDT | Severe Thunderstorm Warning | CTP | 40 min |
| Jun 3, 8:32 PM EDT | Special Weather Statement | CTP | 28 min |
| Jun 19, 2:58 PM EDT | Heat Advisory | CTP | 53 hr |
| Jun 22, 12:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 1:41 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 2:04 PM EDT | Severe Thunderstorm Warning | CTP | 56 min |
| Jun 29, 3:41 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 1, 12:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 6, 11:16 AM EDT | Heat Advisory | CTP | 33 hr |
| Jul 7, 11:19 AM EDT | Mesoscale Discussion | SPC | 86 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, 3:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 4:26 PM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Jul 7, 5:10 PM EDT | Severe Thunderstorm Warning | CTP | 50 min |
| Jul 7, 6:14 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 11, 3:35 PM EDT | Special Weather Statement | CTP | 25 min |
| Jul 15, 4:47 PM EDT | Special Weather Statement | CTP | 58 min |
| Jul 15, 5:40 PM EDT | Special Weather Statement | CTP | 35 min |
| Jul 15, 5:48 PM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| Jul 18, 10:25 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 12:41 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 19, 11:57 PM EDT | Areal Flood Advisory | CTP | 108 min |
| Jul 20, 4:23 AM EDT | Flash Flood Watch | CTP | 19 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 23, 4:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 26, 7:29 AM EDT | Special Weather Statement | CTP | 61 min |
| Jul 26, 1:16 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 26, 3:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 26, 3:46 PM EDT | Severe Thunderstorm Warning | CTP | 74 min |
| Jul 26, 4:41 PM EDT | Tornado Warning | CTP | 34 min |
| Jul 26, 4:58 PM EDT | Severe Thunderstorm Warning | CTP | 32 min |
| Jul 26, 5:06 PM EDT | Severe Thunderstorm Warning | CTP | 84 min |
| Jul 26, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | 74 min |
| Jul 27, 4:38 PM EDT | Severe Thunderstorm Warning | CTP | 52 min |
| Jul 27, 5:57 PM EDT | Special Weather Statement | CTP | 33 min |
| Jul 30, 12:51 PM EDT | Special Weather Statement | CTP | 69 min |
| Aug 4, 3:25 PM EDT | Severe Thunderstorm Warning | CTP | 65 min |
| Aug 5, 2:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Aug 5, 2:56 PM EDT | Special Weather Statement | CTP | 64 min |
| Aug 5, 4:00 PM EDT | Severe Thunderstorm Warning | CTP | 60 min |
| Aug 9, 5:31 PM EDT | Severe Thunderstorm Warning | CTP | 59 min |
| Aug 9, 5:56 PM EDT | Severe Thunderstorm Warning | CTP | 64 min |
| Aug 9, 6:35 PM EDT | Special Weather Statement | CTP | 40 min |
| Aug 9, 8:53 PM EDT | Special Weather Statement | CTP | 37 min |
| Aug 14, 9:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 6, 6:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Sep 6, 9:39 PM EDT | Severe Thunderstorm Warning | CTP | 66 min |
| Sep 6, 10:45 PM EDT | Special Weather Statement | CTP | 30 min |
| Sep 6, 11:09 PM EDT | Severe Thunderstorm Warning | CTP | 66 min |
| Sep 6, 11:42 PM EDT | Areal Flood Advisory | CTP | 93 min |
| Sep 7, 12:57 AM EDT | Flash Flood Warning | CTP | 75 min |
| Sep 8, 8:42 AM EDT | Mesoscale Discussion | SPC | 93 min |
| Sep 8, 11:38 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Sep 8, 12:15 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Sep 8, 2:11 PM EDT | Severe Thunderstorm Warning | CTP | 94 min |
| Sep 18, 11:19 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Sep 18, 12:07 PM EDT | Special Weather Statement | CTP | 23 min |
| Sep 18, 12:10 PM EDT | Tornado Watch | SPC | 9 hr |
| Sep 18, 12:46 PM EDT | Special Weather Statement | CTP | 29 min |
| Sep 18, 12:52 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Sep 18, 1:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Oct 7, 4:54 AM EDT | Frost Advisory | CTP | 28 hr |
| Oct 11, 3:42 AM EDT | Freeze Watch | CTP | 31 hr |
| Oct 12, 4:25 AM EDT | Frost Advisory | CTP | 3 hr |
| Oct 12, 10:15 AM EDT | Freeze Warning | CTP | 22 hr |
| Oct 19, 8:55 AM EDT | Special Weather Statement | CTP | 50 min |
| Oct 19, 4:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| 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 29, 8:36 PM EDT | Areal Flood Advisory | CTP | 8 hr |
| Oct 30, 4:18 AM EDT | Wind Advisory | CTP | 6 hr |
| Oct 30, 1:03 PM EDT | Areal Flood Advisory | CTP | 4 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 21, 5:37 AM EST | Wind Advisory | CTP | 37 hr |
| Dec 24, 2:56 AM EST | Winter Weather Advisory | CTP | 26 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, 12:48 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.