Alert archive / North Dakota / Cavalier County
Weather alerts in Cavalier County, North Dakota, 2026
115 weather alerts in 2026, 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 2026. Tap one for its archive.
- Alerts
- 115
- Warnings
- 34
- Watches
- 13
- Advisories
- 50
- Busiest month
- June26 alerts
- Busiest day
- June 2, 202611 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 Cavalier County in 2026 had a tornado report inside them.
Cavalier County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 20 | 8 | 60% | 7 | 100% | 41 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 30 | 6 | 80% | 16 | 50% | 14 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 203 | 131 | 35% | 251 | 86% | 26 min |
| NWS Grand Forks, ND: flash flood warnings | 7 | 4 | 43% | 9 | 67% | 14 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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 4, 2:53 AM CST | Winter Weather Advisory | FGF | 18 hr |
| Jan 4, 7:55 PM CST | Dense Fog Advisory | FGF | 43 hr |
| Jan 15, 1:42 PM CST | Winter Weather Advisory | FGF | 40 hr |
| Jan 16, 1:26 PM CST | Cold Weather Advisory | FGF | 29 hr |
| Jan 16, 1:26 PM CST | Winter Storm Watch | FGF | 23 hr |
| Jan 17, 12:43 PM CST | Blizzard Warning | FGF | 35 hr |
| Jan 17, 12:45 PM CST | Cold Weather Advisory | FGF | 47 hr |
| Jan 18, 8:48 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 19, 12:00 PM CST | Cold Weather Advisory | FGF | 22 hr |
| Jan 20, 1:07 PM CST | Extreme Cold Watch | FGF | 48 hr |
| Jan 20, 1:07 PM CST | Extreme Cold Warning | FGF | 6 days |
| Jan 20, 1:07 PM CST | Winter Weather Advisory | FGF | 31 hr |
| Jan 22, 1:12 PM CST | Cold Weather Advisory | FGF | 4 days |
| Jan 26, 4:37 AM CST | Wind Advisory | FGF | 17 hr |
| Jan 26, 1:30 PM CST | Cold Weather Advisory | FGF | 23 hr |
| Jan 26, 1:34 PM CST | Winter Weather Advisory | FGF | 8 hr |
| Jan 27, 1:58 PM CST | Cold Weather Advisory | FGF | 19 hr |
| Jan 29, 1:32 PM CST | Cold Weather Advisory | FGF | 20 hr |
| Jan 30, 1:34 PM CST | Cold Weather Advisory | FGF | 19 hr |
| Jan 30, 1:44 PM CST | Winter Weather Advisory | FGF | 51 hr |
| Feb 11, 7:28 PM CST | Dense Fog Advisory | FGF | 14 hr |
| Feb 14, 7:31 AM CST | Dense Fog Advisory | FGF | 6 hr |
| Feb 14, 6:09 PM CST | Dense Fog Advisory | FGF | 20 hr |
| Feb 15, 1:32 PM CST | Winter Storm Watch | FGF | 43 hr |
| Feb 16, 6:31 AM CST | Dense Fog Advisory | FGF | 4 hr |
| Feb 17, 8:57 AM CST | Winter Storm Warning | FGF | 39 hr |
| Feb 17, 10:08 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 23, 12:56 PM CST | Winter Weather Advisory | FGF | 21 hr |
| Feb 26, 12:32 PM CST | Winter Weather Advisory | FGF | 30 hr |
| Feb 27, 10:21 AM CST | High Wind Warning | FGF | 5 hr |
| Mar 3, 7:18 PM CST | Dense Fog Advisory | FGF | 20 hr |
| Mar 4, 6:00 PM CST | Dense Fog Advisory | FGF | 24 hr |
| Mar 5, 12:04 PM CST | Winter Weather Advisory | FGF | 26 hr |
| Mar 11, 1:49 PM CDT | Winter Weather Advisory | FGF | 14 hr |
| Mar 12, 4:35 AM CDT | Winter Weather Advisory | FGF | 26 hr |
| Mar 12, 10:34 AM CDT | Blizzard Warning | FGF | 16 hr |
| Mar 12, 4:50 PM CDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 17, 2:12 AM CDT | Winter Weather Advisory | FGF | 17 hr |
| Apr 2, 12:52 PM CDT | Winter Weather Advisory | FGF | 42 hr |
| Apr 11, 9:26 PM CDT | Dense Fog Advisory | FGF | 17 hr |
| Apr 15, 3:03 AM CDT | Dense Fog Advisory | FGF | 6 hr |
| Apr 16, 2:04 PM CDT | Winter Weather Advisory | FGF | 20 hr |
| Apr 22, 10:10 PM CDT | Severe Thunderstorm Warning | FGF | 35 min |
| Apr 22, 10:41 PM CDT | Special Weather Statement | FGF | 64 min |
| Apr 23, 2:54 AM CDT | Wind Advisory | FGF | 18 hr |
| May 2, 4:21 AM CDT | Fire Weather Watch | FGF | 9 hr |
| May 2, 1:26 PM CDT | Red Flag Warning | FGF | 32 hr |
| May 8, 12:39 PM CDT | Frost Advisory | FGF | 20 hr |
| May 9, 11:31 AM CDT | Freeze Warning | FGF | 21 hr |
| May 10, 11:32 AM CDT | Frost Advisory | FGF | 21 hr |
| May 11, 10:56 AM CDT | Red Flag Warning | FGF | 11 hr |
| May 11, 1:02 PM CDT | Wind Advisory | FGF | 31 hr |
| May 11, 1:55 PM CDT | Red Flag Warning | FGF | 31 hr |
| May 11, 6:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| May 13, 3:14 AM CDT | Fire Weather Watch | FGF | 33 hr |
| May 13, 2:14 PM CDT | Wind Advisory | FGF | 32 hr |
| May 13, 2:22 PM CDT | Red Flag Warning | FGF | 55 hr |
| May 14, 9:32 AM CDT | Blowing Dust Advisory | FGF | 14 hr |
| May 14, 9:41 PM CDT | Wind Advisory | FGF | 23 hr |
| May 15, 2:26 PM CDT | Blowing Dust Advisory | FGF | 7 hr |
| May 15, 4:08 PM CDT | High Wind Warning | FGF | 5 hr |
| May 18, 12:55 PM CDT | Frost Advisory | FGF | 20 hr |
| May 19, 1:03 PM CDT | Freeze Warning | FGF | 20 hr |
| Jun 2, 12:00 PM CDT | Special Weather Statement | FGF | 30 min |
| Jun 2, 12:20 PM CDT | Severe Thunderstorm Warning | FGF | 55 min |
| Jun 2, 1:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 3:04 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 2, 3:39 PM CDT | Severe Thunderstorm Warning | FGF | 51 min |
| Jun 2, 3:47 PM CDT | Severe Thunderstorm Warning | FGF | 28 min |
| Jun 2, 4:04 PM CDT | Severe Thunderstorm Warning | FGF | 56 min |
| Jun 2, 4:52 PM CDT | Severe Thunderstorm Warning | FGF | 53 min |
| Jun 2, 5:27 PM CDT | Severe Thunderstorm Warning | FGF | 48 min |
| Jun 2, 5:28 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 5:43 PM CDT | Severe Thunderstorm Warning | FGF | 46 min |
| Jun 3, 5:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 7, 1:38 AM CDT | Wind Advisory | FGF | 18 hr |
| Jun 7, 11:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 7, 11:34 PM CDT | Severe Thunderstorm Warning | FGF | 56 min |
| Jun 9, 8:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 9, 9:05 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 9, 9:35 PM CDT | Severe Thunderstorm Warning | FGF | 25 min |
| Jun 9, 10:13 PM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Jun 9, 10:41 PM CDT | Severe Thunderstorm Warning | FGF | 64 min |
| Jun 9, 11:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 29, 2:53 AM CDT | Severe Thunderstorm Warning | FGF | 67 min |
| Jun 29, 2:00 PM CDT | Tornado Watch | SPC | 10 hr |
| Jun 29, 7:13 PM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Jun 29, 7:15 PM CDT | Tornado Warning | FGF | 30 min |
| Jun 29, 10:32 PM CDT | Severe Thunderstorm Warning | FGF | 73 min |
| Jul 5, 6:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 9, 1:26 PM CDT | Extreme Heat Watch | FGF | 48 hr |
| Jul 9, 3:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 4:18 PM CDT | Severe Thunderstorm Warning | FGF | 57 min |
| Jul 9, 5:12 PM CDT | Severe Thunderstorm Warning | FGF | 63 min |
| Jul 9, 5:23 PM CDT | Severe Thunderstorm Warning | FGF | 67 min |
| Jul 9, 5:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 9, 5:42 PM CDT | Severe Thunderstorm Warning | FGF | 63 min |
| Jul 9, 6:21 PM CDT | Severe Thunderstorm Warning | FGF | 54 min |
| Jul 10, 12:35 PM CDT | Heat Advisory | FGF | 32 hr |
| Jul 11, 1:44 PM CDT | Extreme Heat Warning | FGF | 59 hr |
| Jul 16, 5:11 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 6:20 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 16, 7:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jul 24, 2:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 24, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 28, 2:56 AM CDT | Dense Fog Advisory | FGF | 15 min |
| Jul 28, 3:17 AM CDT | Dense Fog Advisory | FGF | 7 hr |
| Jul 28, 2:05 PM CDT | Heat Advisory | FGF | 31 hr |
| Aug 24, 5:29 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 24, 5:53 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 30, 12:45 PM CDT | Wind Advisory | FGF | 30 hr |
| Sep 4, 3:51 AM CDT | Dense Fog Advisory | FGF | 6 hr |
| Sep 7, 1:13 PM CDT | Wind Advisory | FGF | 30 hr |
| Sep 13, 1:28 PM CDT | Wind Advisory | FGF | 42 hr |
| Sep 24, 11:49 PM CDT | Dense Fog Advisory | FGF | 11 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 archive2025
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.