Alert archive / North Dakota / Cavalier County
Weather alerts in Cavalier County, North Dakota, 2010
135 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cavalier County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 135
- Warnings
- 35
- Watches
- 29
- Advisories
- 51
- Busiest month
- July25 alerts
- Busiest day
- July 27, 20107 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 3 tornado warnings covering Cavalier County in 2010 had a tornado report inside them.
Cavalier County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 0 | ||
| Severe thunderstorm warnings | 13 | 9 | 31% | 8 | 63% | 27 min |
| Flash flood warnings | 3 | 2 | 33% | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 116 | 44 | 62% | 112 | 89% | 25 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 168 | 101 | 40% | 212 | 62% | 22 min |
| NWS Grand Forks, ND: flash flood warnings | 29 | 23 | 21% | 39 | 87% | 113 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, 2:53 PM CST | Wind Chill Advisory | FGF | 42 hr |
| Jan 5, 4:07 AM CST | Winter Weather Advisory | FGF | 56 hr |
| Jan 7, 4:35 AM CST | Wind Chill Warning | FGF | 31 hr |
| Jan 7, 4:35 AM CST | Wind Chill Advisory | FGF | 11 hr |
| Jan 8, 3:22 PM CST | Wind Chill Advisory | FGF | 23 hr |
| Jan 11, 9:38 AM CST | Dense Fog Advisory | FGF | 2 hr |
| Jan 20, 2:41 PM CST | Winter Storm Watch | FGF | 45 hr |
| Jan 22, 4:43 AM CST | Winter Storm Warning | FGF | 3 days |
| Jan 22, 4:43 AM CST | Winter Weather Advisory | FGF | 7 hr |
| Jan 23, 9:49 AM CST | Winter Weather Advisory | FGF | 66 hr |
| Jan 25, 4:19 AM CST | Blizzard Warning | FGF | 17 hr |
| Jan 26, 4:08 AM CST | Wind Chill Advisory | FGF | 7 hr |
| Jan 26, 2:59 PM CST | Wind Chill Advisory | FGF | 20 hr |
| Jan 27, 3:06 PM CST | Wind Chill Advisory | FGF | 21 hr |
| Jan 30, 3:24 PM CST | Wind Chill Advisory | FGF | 6 hr |
| Feb 5, 3:21 PM CST | Winter Storm Watch | FGF | 25 hr |
| Feb 6, 3:52 PM CST | Winter Weather Advisory | FGF | 50 hr |
| Feb 12, 3:22 PM CST | Winter Weather Advisory | FGF | 48 hr |
| Feb 23, 3:18 PM CST | Wind Chill Advisory | FGF | 19 hr |
| Mar 5, 9:00 AM CST | Dense Fog Advisory | FGF | 4 hr |
| Mar 5, 11:23 PM CST | Dense Fog Advisory | FGF | 13 hr |
| Mar 6, 11:33 PM CST | Dense Fog Advisory | FGF | 10 hr |
| Mar 8, 7:18 PM CST | Dense Fog Advisory | FGF | 17 hr |
| Mar 13, 3:53 AM CST | Dense Fog Advisory | FGF | 6 hr |
| Mar 13, 7:14 PM CST | Dense Fog Advisory | FGF | 14 hr |
| Mar 16, 2:47 PM CDT | Flood Watch | FGF | 3 days |
| Apr 2, 10:31 AM CDT | Winter Weather Advisory | FGF | 14 hr |
| Apr 9, 3:34 PM CDT | Fire Weather Watch | FGF | 13 hr |
| Apr 10, 4:25 AM CDT | Red Flag Warning | FGF | 17 hr |
| Apr 10, 10:15 AM CDT | Wind Advisory | FGF | 11 hr |
| Apr 12, 10:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 13, 1:50 AM CDT | Wind Advisory | FGF | 20 hr |
| Apr 27, 3:18 PM CDT | Wind Advisory | FGF | 30 hr |
| Apr 27, 3:47 PM CDT | Red Flag Warning | FGF | 28 hr |
| May 5, 4:31 AM CDT | Wind Advisory | FGF | 8 hr |
| May 7, 2:55 PM CDT | Frost Advisory | FGF | 18 hr |
| May 7, 9:24 PM CDT | Freeze Warning | FGF | 12 hr |
| May 8, 3:56 AM CDT | Freeze Warning | FGF | 28 hr |
| May 22, 9:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 24, 9:32 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 24, 9:50 PM CDT | Severe Thunderstorm Warning | FGF | 55 min |
| May 25, 3:51 AM CDT | Wind Advisory | FGF | 14 hr |
| May 25, 9:46 AM CDT | High Wind Warning | FGF | 8 hr |
| May 29, 2:20 PM CDT | Mesoscale Discussion | SPC | 25 min |
| May 29, 3:25 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 29, 7:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 8, 1:50 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Jun 8, 3:08 PM CDT | Severe Thunderstorm Warning | FGF | 52 min |
| Jun 8, 3:59 PM CDT | Severe Thunderstorm Warning | FGF | 61 min |
| Jun 16, 6:55 PM CDT | High Wind Watch | FGF | 16 hr |
| Jun 17, 12:04 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jun 17, 12:21 PM CDT | Tornado Watch | SPC | 9 hr |
| Jun 17, 4:52 PM CDT | Tornado Warning | FGF | 53 min |
| Jun 17, 11:06 PM CDT | Wind Advisory | FGF | 20 hr |
| Jun 21, 4:31 AM CDT | Flash Flood Watch | FGF | 26 hr |
| Jun 21, 5:07 AM CDT | Flash Flood Warning | FGF | 9 hr |
| Jun 24, 1:15 PM CDT | Severe Thunderstorm Warning | FGF | 45 min |
| Jun 24, 1:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 24, 2:54 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 24, 7:23 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 25, 1:50 AM CDT | Areal Flood Advisory | FGF | 6 hr |
| Jun 26, 2:26 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 26, 3:02 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 5:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jul 3, 4:53 AM CDT | Severe Thunderstorm Warning | FGF | 37 min |
| Jul 3, 5:20 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 3, 8:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jul 5, 2:51 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 10, 2:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 13, 1:50 PM CDT | Tornado Watch | SPC | 9 hr |
| Jul 13, 10:33 PM CDT | Severe Thunderstorm Warning | FGF | 42 min |
| Jul 13, 10:36 PM CDT | Mesoscale Discussion | SPC | 24 min |
| Jul 13, 10:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 14, 3:00 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 14, 4:46 AM CDT | Severe Thunderstorm Warning | FGF | 59 min |
| Jul 15, 9:30 AM CDT | Wind Advisory | FGF | 11 hr |
| Jul 23, 11:16 PM CDT | Flash Flood Warning | FGF | 10 hr |
| Jul 26, 2:35 PM CDT | Flash Flood Watch | FGF | 12 hr |
| Jul 26, 7:09 PM CDT | Tornado Watch | SPC | 6 hr |
| Jul 26, 8:17 PM CDT | Severe Thunderstorm Warning | FGF | 58 min |
| Jul 26, 8:55 PM CDT | Tornado Warning | FGF | 65 min |
| Jul 26, 9:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 26, 9:10 PM CDT | Areal Flood Advisory | FGF | 6 hr |
| Jul 26, 9:47 PM CDT | Severe Thunderstorm Warning | FGF | 58 min |
| Jul 26, 10:12 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 31, 5:34 PM CDT | Severe Thunderstorm Warning | FGF | 41 min |
| Jul 31, 5:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 31, 6:06 PM CDT | Severe Thunderstorm Warning | FGF | 39 min |
| Jul 31, 6:17 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 31, 9:15 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 1, 6:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 1, 7:37 PM CDT | Severe Thunderstorm Warning | FGF | 53 min |
| Aug 1, 8:10 PM CDT | Tornado Warning | FGF | 65 min |
| Aug 10, 2:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Aug 10, 3:47 PM CDT | Areal Flood Advisory | FGF | 97 min |
| Aug 10, 4:56 PM CDT | Flash Flood Warning | FGF | 16 hr |
| Aug 12, 12:42 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 12, 2:40 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 20, 6:30 PM CDT | Severe Thunderstorm Warning | FGF | 60 min |
| Aug 21, 9:14 PM CDT | Wind Advisory | FGF | 24 hr |
| Aug 24, 3:30 AM CDT | Wind Advisory | FGF | 16 hr |
| Aug 30, 1:19 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Sep 2, 3:13 AM CDT | Wind Advisory | FGF | 16 hr |
| Sep 17, 3:51 PM CDT | Freeze Warning | FGF | 16 hr |
| Sep 28, 5:33 AM CDT | Dense Fog Advisory | FGF | 6 hr |
| Oct 1, 4:17 AM CDT | Freeze Watch | FGF | 10 hr |
| Oct 1, 2:43 PM CDT | Freeze Warning | FGF | 18 hr |
| Oct 20, 4:22 AM CDT | Wind Advisory | FGF | 14 hr |
| Oct 24, 10:12 AM CDT | Dense Fog Advisory | FGF | 105 min |
| Oct 25, 10:18 AM CDT | High Wind Watch | FGF | 18 hr |
| Oct 25, 2:58 PM CDT | High Wind Warning | FGF | 43 hr |
| Oct 25, 3:10 PM CDT | Winter Storm Watch | FGF | 23 hr |
| Oct 26, 5:04 AM CDT | Blizzard Warning | FGF | 33 hr |
| Oct 26, 2:35 PM CDT | Winter Storm Warning | FGF | 24 hr |
| Oct 27, 2:31 PM CDT | Wind Advisory | FGF | 10 hr |
| Nov 18, 2:36 PM CST | Winter Weather Advisory | FGF | 13 hr |
| Nov 19, 5:24 AM CST | Wind Advisory | FGF | 7 hr |
| Nov 20, 4:15 AM CST | Winter Weather Advisory | FGF | 35 hr |
| Nov 22, 4:17 AM CST | Winter Storm Watch | FGF | 35 hr |
| Nov 23, 3:15 PM CST | Blizzard Watch | FGF | 24 hr |
| Nov 23, 3:15 PM CST | Winter Storm Warning | FGF | 44 hr |
| Nov 23, 3:15 PM CST | Winter Weather Advisory | FGF | 44 hr |
| Nov 25, 11:30 AM CST | Winter Weather Advisory | FGF | 4 hr |
| Nov 29, 4:39 AM CST | Winter Weather Advisory | FGF | 40 hr |
| Dec 2, 3:24 PM CST | Winter Weather Advisory | FGF | 37 hr |
| Dec 6, 8:53 AM CST | Dense Fog Advisory | FGF | 3 hr |
| Dec 10, 4:09 PM CST | Wind Chill Advisory | FGF | 17 hr |
| Dec 14, 3:13 PM CST | Winter Weather Advisory | FGF | 42 hr |
| Dec 15, 12:54 PM CST | Winter Storm Warning | FGF | 20 hr |
| Dec 19, 4:13 AM CST | Winter Storm Watch | FGF | 24 hr |
| Dec 20, 4:11 AM CST | Winter Weather Advisory | FGF | 26 hr |
| Dec 28, 5:19 AM CST | Winter Storm Watch | FGF | 35 hr |
| Dec 29, 3:50 PM CST | Winter Storm Watch | FGF | 37 hr |
| Dec 29, 3:50 PM CST | Winter Storm Warning | FGF | 36 hr |
| Dec 29, 3:50 PM CST | Winter Weather Advisory | FGF | 50 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 archive20092011
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.