Alert archive / North Dakota / Morton County
Weather alerts in Morton County, North Dakota, 2019
87 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 87
- Warnings
- 37
- Watches
- 13
- Advisories
- 3
- Busiest month
- July27 alerts
- Busiest day
- July 8, 20199 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, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 32 | 21 | 34% | 19 | 89% | 22 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Bismarck, ND: tornado warnings | 15 | 5 | 67% | 6 | 83% | 3 min |
| NWS Bismarck, ND: severe thunderstorm warnings | 241 | 156 | 35% | 269 | 90% | 18 min |
| NWS Bismarck, ND: flash flood warnings | 7 | 4 | 43% | 6 | 100% | 146 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 |
|---|---|---|---|
| Mar 13, 6:26 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 23, 3:40 PM CDT | Areal Flood Warning | BIS | 6 days |
| Mar 24, 2:32 AM CDT | River Flood Warning | BIS | 9 days |
| Apr 24, 3:23 PM CDT | Fire Weather Watch | BIS | 12 hr |
| Apr 25, 3:22 AM CDT | Red Flag Warning | BIS | 17 hr |
| May 9, 3:18 AM CDT | Fire Weather Watch | BIS | 24 hr |
| May 15, 3:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 15, 3:48 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 15, 4:34 PM CDT | Special Weather Statement | BIS | 41 min |
| May 15, 4:52 PM CDT | Severe Thunderstorm Warning | BIS | 38 min |
| May 15, 5:24 PM CDT | Severe Thunderstorm Warning | BIS | 66 min |
| May 15, 6:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 3, 11:18 PM CDT | Special Weather Statement | BIS | 42 min |
| Jun 7, 7:24 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 11, 1:14 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 11, 3:19 PM CDT | Severe Thunderstorm Warning | BIS | 23 min |
| Jun 15, 8:17 PM CDT | Special Weather Statement | BIS | 43 min |
| Jun 28, 5:56 AM CDT | Severe Thunderstorm Warning | BIS | 64 min |
| Jun 28, 6:23 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 6:59 AM CDT | Severe Thunderstorm Warning | BIS | 61 min |
| Jun 28, 7:54 AM CDT | Severe Thunderstorm Warning | BIS | 66 min |
| Jun 29, 5:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 29, 6:08 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 29, 7:03 PM CDT | Severe Thunderstorm Warning | BIS | 57 min |
| Jun 29, 8:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 29, 8:33 PM CDT | Severe Thunderstorm Warning | BIS | 57 min |
| Jul 2, 3:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 2, 3:38 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 2, 5:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 2, 6:15 PM CDT | Severe Thunderstorm Warning | BIS | 19 min |
| Jul 2, 9:38 PM CDT | Special Weather Statement | BIS | 37 min |
| Jul 2, 9:41 PM CDT | Severe Thunderstorm Warning | BIS | 49 min |
| Jul 3, 4:40 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 4, 2:26 PM CDT | Special Weather Statement | BIS | 64 min |
| Jul 8, 1:27 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 1:43 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 3:40 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 8, 3:47 PM CDT | Severe Thunderstorm Warning | BIS | 43 min |
| Jul 8, 4:10 PM CDT | Severe Thunderstorm Warning | BIS | 50 min |
| Jul 8, 4:53 PM CDT | Severe Thunderstorm Warning | BIS | 52 min |
| Jul 8, 5:01 PM CDT | Severe Thunderstorm Warning | BIS | 44 min |
| Jul 8, 5:44 PM CDT | Severe Thunderstorm Warning | BIS | 41 min |
| Jul 8, 5:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 9, 3:01 AM CDT | Special Weather Statement | BIS | 44 min |
| Jul 12, 9:18 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jul 12, 11:08 PM CDT | Severe Thunderstorm Warning | BIS | 24 min |
| Jul 15, 1:34 AM CDT | Severe Thunderstorm Warning | BIS | 56 min |
| Jul 15, 2:27 AM CDT | Severe Thunderstorm Warning | BIS | 63 min |
| Jul 16, 2:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 17, 7:34 PM CDT | Severe Thunderstorm Warning | BIS | 56 min |
| Jul 17, 8:35 PM CDT | Special Weather Statement | BIS | 25 min |
| Jul 17, 9:13 PM CDT | Special Weather Statement | BIS | 32 min |
| Jul 17, 9:21 PM CDT | Severe Thunderstorm Warning | BIS | 39 min |
| Aug 1, 3:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Aug 4, 11:05 AM CDT | Severe Thunderstorm Warning | BIS | 40 min |
| Aug 4, 11:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Aug 6, 2:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 6, 2:53 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 6, 3:02 PM CDT | Severe Thunderstorm Warning | BIS | 43 min |
| Aug 6, 3:30 PM CDT | Severe Thunderstorm Warning | BIS | 45 min |
| Aug 6, 3:36 PM CDT | Severe Thunderstorm Warning | BIS | 34 min |
| Aug 6, 3:56 PM CDT | Severe Thunderstorm Warning | BIS | 49 min |
| Aug 6, 4:38 PM CDT | Severe Thunderstorm Warning | BIS | 54 min |
| Aug 6, 4:44 PM CDT | Areal Flood Advisory | BIS | 3 hr |
| Aug 11, 5:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 19, 6:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 25, 2:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Aug 25, 3:05 PM CDT | Severe Thunderstorm Warning | BIS | 25 min |
| Aug 25, 3:18 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 25, 4:19 PM CDT | Severe Thunderstorm Warning | BIS | 56 min |
| Aug 25, 4:49 PM CDT | Severe Thunderstorm Warning | BIS | 26 min |
| Aug 25, 5:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 2, 1:25 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Sep 2, 2:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Sep 20, 12:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Sep 20, 1:50 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 20, 3:23 PM CDT | Severe Thunderstorm Warning | BIS | 67 min |
| Sep 20, 4:45 PM CDT | Severe Thunderstorm Warning | BIS | 47 min |
| Sep 20, 6:33 PM CDT | Severe Thunderstorm Warning | BIS | 42 min |
| Sep 20, 7:15 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 20, 8:05 PM CDT | Areal Flood Advisory | BIS | 2 hr |
| Sep 20, 8:50 PM CDT | Areal Flood Advisory | BIS | 3 hr |
| Sep 21, 1:11 AM CDT | Special Weather Statement | BIS | 49 min |
| Sep 22, 8:41 AM CDT | River Flood Warning | BIS | 26 hr |
| Sep 24, 6:09 PM CDT | Special Weather Statement | BIS | 36 min |
| Oct 21, 9:55 PM CDT | River Flood Warning | BIS | 20 hr |
| Dec 13, 5:43 AM CST | Special Weather Statement | BIS | 47 min |
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 | 32 |
| Severe Thunderstorm Watch | 10 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 23 |
| Special Weather Statement | 11 |
| Flooding | |
| Areal Flood Warning | 1 |
| River Flood Warning | 3 |
| Areal Flood Advisory | 3 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.