Alert archive / North Dakota / Cavalier County
Weather alerts in Cavalier County, North Dakota, 2025
127 weather alerts in 2025, 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 2025. Tap one for its archive.
- Alerts
- 127
- Warnings
- 31
- Watches
- 20
- Advisories
- 55
- Busiest month
- July21 alerts
- Busiest day
- July 4, 20257 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 3 tornado warnings covering Cavalier County in 2025 had a tornado report inside them; 1 of 4 tornado reports fell inside a warning, on average 1 minutes after it went out.
Cavalier County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 2 | 33% | 4 | 25% | 1 min |
| Severe thunderstorm warnings | 9 | 5 | 44% | 3 | 67% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 52 | 23 | 56% | 48 | 63% | 19 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 191 | 118 | 38% | 280 | 78% | 26 min |
| NWS Grand Forks, ND: flash flood warnings | 13 | 7 | 46% | 13 | 92% | 31 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 2, 1:14 PM CST | Cold Weather Advisory | FGF | 23 hr |
| Jan 3, 1:53 PM CST | Cold Weather Advisory | FGF | 22 hr |
| Jan 4, 1:32 PM CST | Cold Weather Advisory | FGF | 20 hr |
| Jan 12, 1:37 AM CST | Cold Weather Advisory | FGF | 10 hr |
| Jan 12, 1:35 PM CST | Cold Weather Advisory | FGF | 22 hr |
| Jan 13, 12:19 PM CST | Cold Weather Advisory | FGF | 24 hr |
| Jan 16, 1:58 PM CST | Winter Weather Advisory | FGF | 30 hr |
| Jan 17, 9:56 AM CST | Blizzard Warning | FGF | 8 hr |
| Jan 17, 2:00 PM CST | Cold Weather Advisory | FGF | 28 hr |
| Jan 17, 2:00 PM CST | Extreme Cold Warning | FGF | 4 days |
| Jan 21, 12:18 PM CST | Winter Weather Advisory | FGF | 9 hr |
| Jan 24, 8:03 PM CST | Winter Weather Advisory | FGF | 22 hr |
| Jan 28, 2:13 AM CST | Wind Advisory | FGF | 16 hr |
| Feb 2, 3:19 AM CST | Cold Weather Advisory | FGF | 54 hr |
| Feb 5, 3:52 AM CST | Winter Weather Advisory | FGF | 36 hr |
| Feb 5, 1:36 PM CST | Cold Weather Advisory | FGF | 22 hr |
| Feb 6, 9:48 AM CST | Blizzard Warning | FGF | 6 hr |
| Feb 9, 12:31 PM CST | Cold Weather Advisory | FGF | 29 hr |
| Feb 10, 3:00 AM CST | Extreme Cold Warning | FGF | 33 hr |
| Feb 11, 2:11 PM CST | Cold Weather Advisory | FGF | 21 hr |
| Feb 12, 12:26 PM CST | Extreme Cold Warning | FGF | 24 hr |
| Feb 13, 2:27 PM CST | Cold Weather Advisory | FGF | 22 hr |
| Feb 14, 1:31 PM CST | Cold Weather Advisory | FGF | 20 hr |
| Feb 15, 2:45 AM CST | Extreme Cold Watch | FGF | 23 hr |
| Feb 15, 1:11 PM CST | Cold Weather Advisory | FGF | 32 hr |
| Feb 16, 1:53 AM CST | Extreme Cold Warning | FGF | 58 hr |
| Feb 18, 2:44 AM CST | Extreme Cold Warning | FGF | 31 hr |
| Feb 19, 2:47 PM CST | Cold Weather Advisory | FGF | 19 hr |
| Feb 27, 12:50 PM CST | Wind Advisory | FGF | 28 hr |
| Mar 8, 1:33 PM CST | High Wind Watch | FGF | 24 hr |
| Mar 9, 2:48 PM CDT | High Wind Warning | FGF | 27 hr |
| Mar 10, 12:42 PM CDT | Wind Advisory | FGF | 5 hr |
| Mar 13, 3:00 PM CDT | High Wind Watch | FGF | 23 hr |
| Mar 14, 2:01 PM CDT | Wind Advisory | FGF | 29 hr |
| Mar 16, 2:42 PM CDT | Winter Weather Advisory | FGF | 25 hr |
| Mar 27, 3:11 AM CDT | Winter Weather Advisory | FGF | 42 hr |
| Apr 28, 2:29 AM CDT | Wind Advisory | FGF | 22 hr |
| May 3, 2:22 AM CDT | Fire Weather Watch | FGF | 24 hr |
| May 4, 2:06 AM CDT | Red Flag Warning | FGF | 19 hr |
| May 5, 2:48 AM CDT | Red Flag Warning | FGF | 18 hr |
| May 8, 2:53 PM CDT | Fire Weather Watch | FGF | 47 hr |
| May 10, 2:35 AM CDT | Red Flag Warning | FGF | 18 hr |
| May 10, 1:47 PM CDT | Fire Weather Watch | FGF | 24 hr |
| May 10, 1:47 PM CDT | Red Flag Warning | FGF | 55 hr |
| May 12, 2:46 PM CDT | Fire Weather Watch | FGF | 12 hr |
| May 13, 3:13 AM CDT | Red Flag Warning | FGF | 18 hr |
| May 15, 1:35 PM CDT | Wind Advisory | FGF | 35 hr |
| May 16, 3:20 AM CDT | Freeze Watch | FGF | 11 hr |
| May 16, 2:30 PM CDT | Frost Advisory | FGF | 20 hr |
| May 17, 1:56 PM CDT | Frost Advisory | FGF | 18 hr |
| May 21, 2:06 PM CDT | Frost Advisory | FGF | 19 hr |
| Jun 7, 3:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 19, 6:38 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 20, 7:15 PM CDT | Special Weather Statement | FGF | 15 min |
| Jun 20, 7:54 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 20, 11:48 PM CDT | Severe Thunderstorm Warning | FGF | 57 min |
| Jun 22, 9:09 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 22, 11:10 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 22, 3:48 PM CDT | Severe Thunderstorm Warning | FGF | 27 min |
| Jun 27, 5:20 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 27, 7:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jul 3, 7:06 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 3, 11:28 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 3, 11:39 PM CDT | Special Weather Statement | FGF | 36 min |
| Jul 4, 1:09 AM CDT | Special Weather Statement | FGF | 51 min |
| Jul 4, 1:14 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 1:55 AM CDT | Special Weather Statement | FGF | 50 min |
| Jul 4, 2:14 AM CDT | Severe Thunderstorm Warning | FGF | 46 min |
| Jul 4, 8:58 PM CDT | Special Weather Statement | FGF | 47 min |
| Jul 4, 9:36 PM CDT | Special Weather Statement | FGF | 24 min |
| Jul 7, 3:26 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 7, 3:52 PM CDT | Tornado Warning | FGF | 23 min |
| Jul 7, 3:54 PM CDT | Tornado Warning | FGF | 36 min |
| Jul 7, 4:16 PM CDT | Tornado Warning | FGF | 29 min |
| Jul 10, 11:14 PM CDT | Special Weather Statement | FGF | 31 min |
| Jul 19, 12:39 AM CDT | Dense Fog Advisory | FGF | 9 hr |
| Jul 25, 2:17 PM CDT | Heat Advisory | FGF | 30 hr |
| Jul 25, 11:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 26, 12:00 AM CDT | Severe Thunderstorm Warning | FGF | 60 min |
| Jul 26, 12:42 AM CDT | Severe Thunderstorm Warning | FGF | 63 min |
| Jul 26, 1:29 AM CDT | Special Weather Statement | FGF | 46 min |
| Jul 26, 11:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 7, 7:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 8:02 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 8, 12:48 AM CDT | Severe Thunderstorm Warning | FGF | 57 min |
| Aug 8, 1:18 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Aug 8, 1:40 AM CDT | Special Weather Statement | FGF | 65 min |
| Aug 8, 4:49 AM CDT | Severe Thunderstorm Warning | FGF | 56 min |
| Aug 11, 4:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 3:00 AM CDT | Wind Advisory | FGF | 17 hr |
| Sep 1, 6:15 PM CDT | Severe Thunderstorm Warning | FGF | 30 min |
| Sep 1, 6:43 PM CDT | Severe Thunderstorm Warning | FGF | 47 min |
| Sep 6, 2:15 PM CDT | Frost Advisory | FGF | 18 hr |
| Sep 11, 5:58 PM CDT | Special Weather Statement | FGF | 32 min |
| Sep 12, 1:08 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 14, 1:07 PM CDT | Tornado Watch | SPC | 8 hr |
| Sep 24, 3:08 AM CDT | Dense Fog Advisory | FGF | 9 hr |
| Oct 5, 2:41 AM CDT | Wind Advisory | FGF | 16 hr |
| Oct 5, 2:57 PM CDT | Freeze Warning | FGF | 18 hr |
| Oct 6, 1:35 PM CDT | Freeze Warning | FGF | 19 hr |
| Oct 11, 2:55 PM CDT | Wind Advisory | FGF | 29 hr |
| Oct 12, 7:52 PM CDT | Wind Advisory | FGF | 8 hr |
| Oct 16, 9:34 AM CDT | Dense Fog Advisory | FGF | 15 hr |
| Oct 25, 2:13 PM CDT | Wind Advisory | FGF | 28 hr |
| Nov 2, 1:49 AM CST | Wind Advisory | FGF | 16 hr |
| Nov 23, 2:10 PM CST | Winter Storm Watch | FGF | 24 hr |
| Dec 7, 2:06 PM CST | Winter Storm Watch | FGF | 24 hr |
| Dec 8, 1:46 PM CST | Winter Storm Warning | FGF | 33 hr |
| Dec 8, 1:46 PM CST | Winter Weather Advisory | FGF | 37 hr |
| Dec 11, 1:56 PM CST | Cold Weather Advisory | FGF | 70 hr |
| Dec 11, 1:56 PM CST | Winter Weather Advisory | FGF | 25 hr |
| Dec 12, 2:33 PM CST | Cold Weather Advisory | FGF | 45 hr |
| Dec 12, 2:33 PM CST | Extreme Cold Warning | FGF | 21 hr |
| Dec 15, 1:37 PM CST | Wind Advisory | FGF | 28 hr |
| Dec 16, 1:45 PM CST | High Wind Warning | FGF | 4 hr |
| Dec 16, 2:06 PM CST | Winter Storm Watch | FGF | 23 hr |
| Dec 17, 12:51 PM CST | Cold Weather Advisory | FGF | 47 hr |
| Dec 17, 12:56 PM CST | Blizzard Warning | FGF | 29 hr |
| Dec 18, 9:09 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Dec 19, 3:33 AM CST | Winter Weather Advisory | FGF | 16 hr |
| Dec 19, 6:54 PM CST | Winter Weather Advisory | FGF | 14 hr |
| Dec 25, 2:56 AM CST | Winter Weather Advisory | FGF | 24 hr |
| Dec 26, 4:51 PM CST | Dense Fog Advisory | FGF | 31 hr |
| Dec 26, 6:09 PM CST | Winter Weather Advisory | FGF | 18 hr |
| Dec 27, 6:39 PM CST | Winter Weather Advisory | FGF | 38 hr |
| Dec 28, 2:02 PM CST | Cold Weather Advisory | FGF | 19 hr |
| Dec 30, 8:05 PM CST | Winter Weather Advisory | FGF | 13 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 archive20242026
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.