Alert archive / North Dakota / Morton County
Weather alerts in Morton County, North Dakota, 2024
85 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Morton County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 85
- Warnings
- 34
- Watches
- 16
- Advisories
- 3
- Busiest month
- July27 alerts
- Busiest day
- May 17, 20248 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Morton County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 23 | 15 | 35% | 15 | 87% | 19 min |
| Flash flood warnings | 3 | 0 | 100% | 0 |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Bismarck, ND: tornado warnings | 17 | 4 | 76% | 10 | 40% | 11 min |
| NWS Bismarck, ND: severe thunderstorm warnings | 212 | 149 | 30% | 316 | 86% | 24 min |
| NWS Bismarck, ND: flash flood warnings | 6 | 2 | 67% | 2 | 100% | 39 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 |
|---|---|---|---|
| Feb 28, 9:48 PM CST | Areal Flood Warning | BIS | 41 hr |
| Mar 3, 11:01 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Mar 15, 3:36 AM CDT | Red Flag Warning | BIS | 16 hr |
| Apr 5, 3:14 AM CDT | Red Flag Warning | BIS | 16 hr |
| Apr 21, 2:48 AM CDT | Fire Weather Watch | BIS | 24 hr |
| Apr 22, 2:52 AM CDT | Red Flag Warning | BIS | 17 hr |
| May 17, 2:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| May 17, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 17, 3:32 PM CDT | Special Weather Statement | BIS | 28 min |
| May 17, 4:39 PM CDT | Special Weather Statement | BIS | 36 min |
| May 17, 5:04 PM CDT | Mesoscale Discussion | SPC | 116 min |
| May 17, 5:14 PM CDT | Special Weather Statement | BIS | 31 min |
| May 17, 5:46 PM CDT | Special Weather Statement | BIS | 29 min |
| May 17, 6:26 PM CDT | Severe Thunderstorm Warning | BIS | 64 min |
| May 19, 7:15 PM CDT | Severe Thunderstorm Warning | BIS | 45 min |
| May 19, 7:58 PM CDT | Severe Thunderstorm Warning | BIS | 47 min |
| Jun 2, 3:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 2, 6:18 PM CDT | Mesoscale Discussion | SPC | 72 min |
| Jun 15, 5:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 15, 7:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 15, 8:10 PM CDT | Tornado Watch | SPC | 6 hr |
| Jun 15, 8:48 PM CDT | Severe Thunderstorm Warning | BIS | 57 min |
| Jun 15, 9:40 PM CDT | Severe Thunderstorm Warning | BIS | 46 min |
| Jun 15, 10:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 16, 1:36 AM CDT | Severe Thunderstorm Warning | BIS | 54 min |
| Jun 17, 9:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 17, 10:42 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 24, 4:17 AM CDT | Special Weather Statement | BIS | 28 min |
| Jun 27, 6:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 27, 7:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 27, 7:58 PM CDT | Severe Thunderstorm Warning | BIS | 62 min |
| Jun 27, 8:05 PM CDT | Severe Thunderstorm Warning | BIS | 40 min |
| Jun 27, 8:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 27, 8:39 PM CDT | Severe Thunderstorm Warning | BIS | 48 min |
| Jul 1, 2:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 1, 3:43 PM CDT | Severe Thunderstorm Warning | BIS | 47 min |
| Jul 1, 3:44 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 1, 5:19 PM CDT | Special Weather Statement | BIS | 26 min |
| Jul 2, 3:13 PM CDT | Special Weather Statement | BIS | 32 min |
| Jul 12, 4:05 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 12, 6:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jul 12, 7:28 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 12, 9:43 PM CDT | Severe Thunderstorm Warning | BIS | 48 min |
| Jul 12, 10:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 12, 10:46 PM CDT | Severe Thunderstorm Warning | BIS | 49 min |
| Jul 14, 11:34 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 27, 8:11 PM CDT | Severe Thunderstorm Warning | BIS | 49 min |
| Jul 27, 8:53 PM CDT | Severe Thunderstorm Warning | BIS | 52 min |
| Jul 27, 9:16 PM CDT | Special Weather Statement | BIS | 29 min |
| Jul 29, 3:38 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jul 29, 4:26 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 29, 4:46 PM CDT | Severe Thunderstorm Warning | BIS | 59 min |
| Jul 29, 5:07 PM CDT | Severe Thunderstorm Warning | BIS | 53 min |
| Jul 29, 5:46 PM CDT | Severe Thunderstorm Warning | BIS | 59 min |
| Jul 29, 6:10 PM CDT | Flash Flood Warning | BIS | 3 hr |
| Jul 29, 6:18 PM CDT | Severe Thunderstorm Warning | BIS | 57 min |
| Jul 29, 6:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 29, 7:13 PM CDT | Severe Thunderstorm Warning | BIS | 47 min |
| Jul 29, 8:02 PM CDT | Severe Thunderstorm Warning | BIS | 58 min |
| Jul 30, 3:03 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 30, 4:37 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 6, 11:24 PM CDT | Special Weather Statement | BIS | 36 min |
| Aug 13, 3:30 PM CDT | Special Weather Statement | BIS | 30 min |
| Aug 13, 3:56 PM CDT | Special Weather Statement | BIS | 34 min |
| Aug 13, 4:03 PM CDT | Special Weather Statement | BIS | 27 min |
| Aug 13, 4:25 PM CDT | Special Weather Statement | BIS | 35 min |
| Aug 13, 5:20 PM CDT | Areal Flood Advisory | BIS | 3 hr |
| Aug 13, 6:49 PM CDT | Areal Flood Advisory | BIS | 7 hr |
| Aug 13, 8:19 PM CDT | Flash Flood Warning | BIS | 6 hr |
| Aug 14, 10:55 AM CDT | Areal Flood Advisory | BIS | 2 hr |
| Aug 14, 11:35 AM CDT | Flash Flood Warning | BIS | 82 min |
| Aug 28, 3:51 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 28, 4:41 PM CDT | Tornado Watch | SPC | 6 hr |
| Aug 28, 5:39 PM CDT | Severe Thunderstorm Warning | BIS | 51 min |
| Aug 28, 6:10 PM CDT | Severe Thunderstorm Warning | BIS | 65 min |
| Aug 29, 1:41 AM CDT | Severe Thunderstorm Warning | BIS | 49 min |
| Sep 11, 1:40 PM CDT | Fire Weather Watch | BIS | 12 hr |
| Sep 12, 2:09 AM CDT | Red Flag Warning | BIS | 18 hr |
| Sep 16, 3:00 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 28, 3:16 AM CDT | Fire Weather Watch | BIS | 11 hr |
| Sep 28, 2:29 PM CDT | Red Flag Warning | BIS | 53 hr |
| Sep 29, 2:35 AM CDT | Fire Weather Watch | BIS | 13 hr |
| Oct 1, 2:51 AM CDT | Red Flag Warning | BIS | 16 hr |
| Oct 3, 3:20 AM CDT | Fire Weather Watch | BIS | 34 hr |
| Oct 4, 1:02 PM CDT | Red Flag Warning | BIS | 32 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 | 23 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 19 |
| Special Weather Statement | 13 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 3 |
| Areal Flood Advisory | 3 |
| Fire | |
| Red Flag Warning | 7 |
| Fire Weather Watch | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.