Alert archive / North Dakota / Pembina County
Weather alerts in Pembina County, North Dakota, 2012
102 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Pembina County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 102
- Warnings
- 26
- Watches
- 14
- Advisories
- 42
- Busiest month
- July20 alerts
- Busiest day
- July 2, 20129 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 Pembina County in 2012 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.
Pembina County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 2 | 0% | |
| Severe thunderstorm warnings | 10 | 9 | 10% | 10 | 90% | 20 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 9 | 5 | 44% | 18 | 39% | 18 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 124 | 97 | 22% | 211 | 85% | 23 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 12:11 PM CST | Wind Advisory | FGF | 255 days |
| Jan 10, 3:13 PM CST | Winter Weather Advisory | FGF | 14 hr |
| Jan 11, 4:12 AM CST | Wind Advisory | FGF | 11 hr |
| Jan 17, 4:12 AM CST | Extreme Cold Watch | FGF | 24 hr |
| Jan 18, 4:05 AM CST | Extreme Cold Warning | FGF | 32 hr |
| Jan 19, 3:21 PM CST | Extreme Cold Warning | FGF | 13 hr |
| Jan 21, 3:18 PM CST | Winter Weather Advisory | FGF | 33 hr |
| Jan 25, 4:16 AM CST | Wind Advisory | FGF | 14 hr |
| Jan 30, 3:51 PM CST | Winter Weather Advisory | FGF | 17 hr |
| Feb 1, 10:48 PM CST | Freezing Fog Advisory | FGF | 14 hr |
| Feb 2, 3:32 PM CST | Dense Fog Advisory | FGF | 44 hr |
| Feb 10, 2:45 AM CST | Extreme Cold Warning | FGF | 7 hr |
| Feb 10, 2:45 PM CST | Extreme Cold Warning | FGF | 19 hr |
| Feb 19, 3:05 PM CST | Winter Weather Advisory | FGF | 45 hr |
| Feb 24, 4:14 AM CST | Winter Storm Watch | FGF | 24 hr |
| Feb 25, 3:57 AM CST | Winter Storm Warning | FGF | 47 hr |
| Feb 28, 4:18 AM CST | Winter Weather Advisory | FGF | 24 hr |
| Mar 2, 8:37 AM CST | Winter Weather Advisory | FGF | 19 hr |
| Mar 8, 4:06 AM CST | Winter Weather Advisory | FGF | 11 hr |
| Mar 19, 3:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 23, 3:32 AM CDT | Dense Fog Advisory | FGF | 8 hr |
| Mar 29, 11:53 PM CDT | Dense Fog Advisory | FGF | 11 hr |
| Apr 6, 4:27 AM CDT | Wind Advisory | FGF | 16 hr |
| Apr 6, 4:37 AM CDT | Red Flag Warning | FGF | 15 hr |
| Apr 7, 3:35 AM CDT | Wind Advisory | FGF | 17 hr |
| Apr 8, 3:00 AM CDT | Wind Advisory | FGF | 17 hr |
| Apr 15, 4:00 AM CDT | Wind Advisory | FGF | 24 hr |
| Apr 25, 3:30 PM CDT | Hard Freeze Warning | FGF | 19 hr |
| Apr 26, 3:33 PM CDT | Frost Advisory | FGF | 16 hr |
| May 1, 5:55 PM CDT | Severe Thunderstorm Warning | FGF | 65 min |
| May 10, 6:49 PM CDT | Wind Advisory | FGF | 8 hr |
| May 14, 9:28 PM CDT | Wind Advisory | FGF | 6 hr |
| May 29, 2:04 PM CDT | Frost Advisory | FGF | 18 hr |
| Jun 3, 5:00 PM CDT | Special Weather Statement | FGF | 30 min |
| Jun 3, 6:12 PM CDT | Tornado Warning | FGF | 48 min |
| Jun 9, 6:48 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 9, 3:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 9, 7:50 PM CDT | Special Weather Statement | FGF | 55 min |
| Jun 9, 7:58 PM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Jun 9, 8:02 PM CDT | Mesoscale Discussion | SPC | 28 min |
| Jun 9, 9:15 PM CDT | Severe Thunderstorm Warning | FGF | 30 min |
| Jun 11, 3:32 AM CDT | Wind Advisory | FGF | 14 hr |
| Jun 17, 7:20 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 21, 4:23 PM CDT | Severe Thunderstorm Warning | FGF | 42 min |
| Jul 2, 4:15 AM CDT | Heat Advisory | FGF | 15 hr |
| Jul 2, 10:59 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 2, 11:43 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 2, 12:12 PM CDT | Special Weather Statement | FGF | 48 min |
| Jul 2, 12:29 PM CDT | Severe Thunderstorm Warning | FGF | 31 min |
| Jul 2, 1:23 PM CDT | Special Weather Statement | FGF | 37 min |
| Jul 2, 1:40 PM CDT | Severe Thunderstorm Warning | FGF | 37 min |
| Jul 2, 6:40 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 2, 6:54 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 4, 4:12 AM CDT | Heat Advisory | FGF | 18 hr |
| Jul 4, 6:25 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 4, 6:55 AM CDT | Severe Thunderstorm Warning | FGF | 65 min |
| Jul 4, 7:54 AM CDT | Severe Thunderstorm Warning | FGF | 66 min |
| Jul 4, 8:10 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 4, 8:58 AM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Jul 12, 2:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 12, 6:22 PM CDT | Special Weather Statement | FGF | 53 min |
| Jul 19, 3:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 19, 10:16 PM CDT | Special Weather Statement | FGF | 59 min |
| Jul 29, 3:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Aug 3, 1:31 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Aug 24, 9:01 PM CDT | Special Weather Statement | FGF | 59 min |
| Aug 25, 1:46 AM CDT | Severe Thunderstorm Warning | FGF | 44 min |
| Sep 10, 3:27 PM CDT | Fire Weather Watch | FGF | 13 hr |
| Sep 11, 4:18 AM CDT | Red Flag Warning | FGF | 15 hr |
| Sep 11, 2:52 PM CDT | Fire Weather Watch | FGF | 14 hr |
| Sep 12, 4:44 AM CDT | Red Flag Warning | FGF | 14 hr |
| Sep 12, 7:25 PM CDT | Frost Advisory | FGF | 14 hr |
| Sep 13, 3:03 PM CDT | Frost Advisory | FGF | 18 hr |
| Sep 17, 2:34 PM CDT | Freeze Warning | FGF | 18 hr |
| Sep 18, 3:03 PM CDT | Fire Weather Watch | FGF | 13 hr |
| Sep 19, 3:49 AM CDT | Wind Advisory | FGF | 15 hr |
| Sep 21, 3:52 AM CDT | Wind Advisory | FGF | 18 hr |
| Sep 21, 3:11 PM CDT | Freeze Warning | FGF | 17 hr |
| Sep 22, 4:04 AM CDT | Freeze Warning | FGF | 28 hr |
| Oct 1, 3:55 AM CDT | Fire Weather Watch | FGF | 15 hr |
| Oct 1, 7:13 PM CDT | Red Flag Warning | FGF | 24 hr |
| Oct 2, 11:17 AM CDT | Wind Advisory | FGF | 7 hr |
| Oct 3, 4:18 AM CDT | Winter Storm Watch | FGF | 11 hr |
| Oct 3, 3:30 PM CDT | Winter Storm Warning | FGF | 29 hr |
| Oct 3, 3:30 PM CDT | Winter Weather Advisory | FGF | 29 hr |
| Oct 3, 11:15 PM CDT | Mesoscale Discussion | SPC | 5 hr |
| Oct 16, 1:02 PM CDT | High Wind Watch | FGF | 26 hr |
| Oct 17, 2:56 PM CDT | Wind Advisory | FGF | 37 hr |
| Nov 2, 1:58 PM CDT | Winter Weather Advisory | FGF | 17 hr |
| Nov 8, 3:46 AM CST | Winter Storm Watch | FGF | 34 hr |
| Nov 9, 4:16 AM CST | Winter Storm Warning | FGF | 50 hr |
| Nov 10, 5:10 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Nov 17, 8:48 PM CST | Dense Fog Advisory | FGF | 14 hr |
| Nov 21, 4:21 AM CST | Winter Storm Watch | FGF | 11 hr |
| Nov 21, 3:26 PM CST | Winter Weather Advisory | FGF | 39 hr |
| Dec 8, 4:35 AM CST | Winter Weather Advisory | FGF | 35 hr |
| Dec 8, 9:41 PM CST | Wind Chill Advisory | FGF | 14 hr |
| Dec 9, 3:22 PM CST | Wind Chill Advisory | FGF | 19 hr |
| Dec 14, 7:58 PM CST | Dense Fog Advisory | FGF | 12 hr |
| Dec 24, 4:10 AM CST | Wind Chill Advisory | FGF | 32 hr |
| Dec 28, 9:24 PM CST | Wind Chill Advisory | FGF | 9 hr |
| Dec 30, 3:21 PM CST | Wind Chill Advisory | FGF | 18 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.