Alert archive / North Dakota / Cavalier County
Weather alerts in Cavalier County, North Dakota, 2023
79 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 79
- Warnings
- 25
- Watches
- 8
- Advisories
- 36
- Busiest month
- January11 alerts
- Busiest day
- June 28, 20235 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Cavalier County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 14 | 4 | 71% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 17 | 7 | 59% | 19 | 53% | 30 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 146 | 74 | 49% | 152 | 75% | 25 min |
| NWS Grand Forks, ND: flash flood warnings | 4 | 4 | 0% | 8 | 63% | 37 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 3, 3:20 AM CST | Dense Fog Advisory | FGF | 12 hr |
| Jan 15, 1:57 AM CST | Dense Fog Advisory | FGF | 7 hr |
| Jan 15, 3:23 PM CST | Dense Fog Advisory | FGF | 17 hr |
| Jan 16, 8:14 AM CST | Winter Weather Advisory | FGF | 28 hr |
| Jan 18, 8:40 AM CST | Winter Weather Advisory | FGF | 9 hr |
| Jan 21, 9:26 PM CST | Dense Fog Advisory | FGF | 15 hr |
| Jan 26, 3:59 AM CST | Winter Weather Advisory | FGF | 32 hr |
| Jan 27, 12:56 PM CST | Wind Chill Advisory | FGF | 53 hr |
| Jan 28, 1:50 PM CST | Wind Chill Warning | FGF | 46 hr |
| Jan 30, 1:19 AM CST | Wind Chill Advisory | FGF | 35 hr |
| Jan 31, 1:32 PM CST | Wind Chill Advisory | FGF | 16 hr |
| Feb 1, 1:53 PM CST | Wind Chill Advisory | FGF | 46 hr |
| Feb 5, 6:24 PM CST | Dense Fog Advisory | FGF | 8 hr |
| Feb 12, 4:44 AM CST | Dense Fog Advisory | FGF | 5 hr |
| Feb 14, 2:39 AM CST | Winter Weather Advisory | FGF | 33 hr |
| Feb 14, 2:43 AM CST | Wind Advisory | FGF | 15 hr |
| Feb 19, 3:18 AM CST | Winter Weather Advisory | FGF | 42 hr |
| Feb 21, 1:08 PM CST | Wind Chill Warning | FGF | 47 hr |
| Feb 23, 12:05 PM CST | Wind Chill Advisory | FGF | 22 hr |
| Feb 24, 10:29 AM CST | Wind Chill Advisory | FGF | 24 hr |
| Mar 9, 1:49 PM CST | Winter Storm Watch | FGF | 37 hr |
| Mar 10, 1:47 PM CST | Blizzard Warning | FGF | 40 hr |
| Mar 11, 2:23 AM CST | Winter Weather Advisory | FGF | 34 hr |
| Mar 11, 6:10 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Mar 17, 4:07 AM CDT | Winter Weather Advisory | FGF | 17 hr |
| Mar 24, 11:59 PM CDT | Dense Fog Advisory | FGF | 12 hr |
| Apr 2, 3:29 AM CDT | Winter Storm Watch | FGF | 33 hr |
| Apr 3, 12:03 PM CDT | Blizzard Warning | FGF | 64 hr |
| Apr 5, 1:02 PM CDT | Mesoscale Discussion | SPC | 4 hr |
| Apr 17, 1:20 AM CDT | River Flood Warning | FGF | 54 hr |
| Apr 17, 10:10 PM CDT | River Flood Warning | FGF | 45 hr |
| Apr 19, 5:20 AM CDT | Winter Storm Watch | FGF | 23 hr |
| Apr 20, 4:01 AM CDT | Winter Storm Warning | FGF | 24 hr |
| Apr 20, 4:01 AM CDT | Winter Weather Advisory | FGF | 41 hr |
| Apr 27, 9:15 PM CDT | River Flood Warning | FGF | 72 hr |
| May 10, 8:13 PM CDT | Severe Thunderstorm Warning | FGF | 32 min |
| May 10, 8:52 PM CDT | Severe Thunderstorm Warning | FGF | 23 min |
| May 10, 10:23 PM CDT | Special Weather Statement | FGF | 37 min |
| May 29, 4:41 PM CDT | Special Weather Statement | FGF | 34 min |
| Jun 20, 4:52 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 20, 4:54 PM CDT | Severe Thunderstorm Warning | FGF | 51 min |
| Jun 20, 5:41 PM CDT | Severe Thunderstorm Warning | FGF | 49 min |
| Jun 26, 7:25 PM CDT | Severe Thunderstorm Warning | FGF | 35 min |
| Jun 27, 6:05 PM CDT | Severe Thunderstorm Warning | FGF | 28 min |
| Jun 28, 3:57 PM CDT | Severe Thunderstorm Warning | FGF | 48 min |
| Jun 28, 4:03 PM CDT | Special Weather Statement | FGF | 27 min |
| Jun 28, 4:30 PM CDT | Special Weather Statement | FGF | 15 min |
| Jun 28, 4:43 PM CDT | Special Weather Statement | FGF | 47 min |
| Jun 28, 5:05 PM CDT | Severe Thunderstorm Warning | FGF | 40 min |
| Jul 2, 5:55 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 25, 4:50 PM CDT | Severe Thunderstorm Warning | FGF | 40 min |
| Jul 25, 5:23 PM CDT | Severe Thunderstorm Warning | FGF | 45 min |
| Aug 16, 3:32 AM CDT | Wind Advisory | FGF | 17 hr |
| Aug 24, 5:51 AM CDT | Dense Fog Advisory | FGF | 4 hr |
| Aug 24, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 24, 4:34 PM CDT | Severe Thunderstorm Warning | FGF | 41 min |
| Aug 26, 5:51 AM CDT | Dense Fog Advisory | FGF | 4 hr |
| Sep 4, 9:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Sep 4, 10:58 PM CDT | Severe Thunderstorm Warning | FGF | 47 min |
| Sep 4, 11:39 PM CDT | Severe Thunderstorm Warning | FGF | 66 min |
| Sep 5, 12:24 AM CDT | Severe Thunderstorm Warning | FGF | 66 min |
| Sep 17, 5:06 AM CDT | Dense Fog Advisory | FGF | 5 hr |
| Oct 2, 12:55 AM CDT | Dense Fog Advisory | FGF | 11 hr |
| Oct 4, 2:43 PM CDT | Freeze Watch | FGF | 24 hr |
| Oct 5, 2:33 PM CDT | Freeze Watch | FGF | 24 hr |
| Oct 6, 10:39 AM CDT | Freeze Warning | FGF | 23 hr |
| Oct 9, 2:06 PM CDT | Freeze Warning | FGF | 20 hr |
| Oct 24, 3:18 AM CDT | Winter Storm Watch | FGF | 36 hr |
| Oct 25, 3:32 AM CDT | Winter Storm Warning | FGF | 51 hr |
| Oct 26, 10:21 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Nov 5, 2:18 AM CST | Winter Weather Advisory | FGF | 10 hr |
| Nov 8, 1:57 AM CST | Dense Fog Advisory | FGF | 5 hr |
| Dec 5, 3:19 AM CST | Dense Fog Advisory | FGF | 9 hr |
| Dec 8, 3:37 AM CST | Winter Weather Advisory | FGF | 35 hr |
| Dec 10, 5:04 PM CST | Dense Fog Advisory | FGF | 16 hr |
| Dec 17, 9:46 AM CST | Wind Advisory | FGF | 10 hr |
| Dec 22, 1:58 AM CST | Dense Fog Advisory | FGF | 35 hr |
| Dec 23, 6:06 PM CST | Dense Fog Advisory | FGF | 10 hr |
| Dec 24, 5:57 AM CST | Winter Weather Advisory | FGF | 6 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 14 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 5 |
| Flooding | |
| River Flood Warning | 3 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 11 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 2 |
| Freeze Watch | 2 |
| Wind Chill Advisory | 6 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 16 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.