Alert archive / North Dakota / Morton County
Weather alerts in Morton County, North Dakota, 2010
141 weather alerts in 2010, 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 2010. Tap one for its archive.
- Alerts
- 141
- Warnings
- 67
- Watches
- 25
- Advisories
- 11
- Busiest month
- June41 alerts
- Busiest day
- June 25, 201016 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 14 tornado warnings covering Morton County in 2010 had a tornado report inside them; 1 of 3 tornado reports fell inside a warning, on average 0 minutes after it went out.
Morton County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 14 | 1 | 93% | 3 | 33% | 0 min |
| Severe thunderstorm warnings | 42 | 26 | 38% | 41 | 63% | 25 min |
| Flash flood warnings | 3 | 1 | 67% | 2 | 50% | 86 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Bismarck, ND: tornado warnings | 93 | 10 | 89% | 30 | 63% | 9 min |
| NWS Bismarck, ND: severe thunderstorm warnings | 430 | 186 | 57% | 406 | 74% | 25 min |
| NWS Bismarck, ND: flash flood warnings | 29 | 8 | 72% | 23 | 57% | 83 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 31, 6:32 PM CDT | River Flood Warning | BIS | 5 days |
| Apr 1, 12:43 AM CDT | Areal Flood Advisory | BIS | 12 hr |
| Apr 1, 1:31 PM CDT | Areal Flood Advisory | BIS | 48 hr |
| Apr 7, 3:47 PM CDT | Fire Weather Watch | BIS | 23 hr |
| Apr 8, 3:00 PM CDT | Red Flag Warning | BIS | 30 hr |
| Apr 10, 4:17 AM CDT | Red Flag Warning | BIS | 16 hr |
| Apr 13, 12:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Apr 13, 12:48 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 13, 1:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 13, 3:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 13, 5:05 PM CDT | Areal Flood Advisory | BIS | 3 hr |
| Apr 16, 4:25 AM CDT | Fire Weather Watch | BIS | 24 hr |
| Apr 17, 4:35 AM CDT | Red Flag Warning | BIS | 16 hr |
| May 3, 3:30 PM CDT | Red Flag Warning | BIS | 30 hr |
| May 22, 1:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| May 24, 1:37 AM CDT | Mesoscale Discussion | SPC | 83 min |
| May 24, 2:00 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 24, 6:06 AM CDT | Mesoscale Discussion | SPC | 114 min |
| May 24, 2:03 PM CDT | Tornado Watch | SPC | 8 hr |
| May 24, 6:33 PM CDT | Severe Thunderstorm Warning | BIS | 57 min |
| May 24, 6:46 PM CDT | Tornado Warning | BIS | 15 min |
| May 24, 7:14 PM CDT | Severe Thunderstorm Warning | BIS | 61 min |
| May 24, 7:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| May 24, 7:28 PM CDT | Tornado Warning | BIS | 32 min |
| May 24, 7:43 PM CDT | Tornado Warning | BIS | 32 min |
| May 24, 8:29 PM CDT | Areal Flood Advisory | BIS | 92 min |
| May 28, 6:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 3, 3:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 3, 3:48 PM CDT | Severe Thunderstorm Warning | BIS | 42 min |
| Jun 3, 4:26 PM CDT | Severe Thunderstorm Warning | BIS | 49 min |
| Jun 3, 5:15 PM CDT | Severe Thunderstorm Warning | BIS | 45 min |
| Jun 16, 7:20 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 16, 11:42 PM CDT | Severe Thunderstorm Warning | BIS | 63 min |
| Jun 17, 2:05 AM CDT | Mesoscale Discussion | SPC | 55 min |
| Jun 17, 4:56 AM CDT | Severe Thunderstorm Warning | BIS | 34 min |
| Jun 17, 5:05 AM CDT | Severe Thunderstorm Warning | BIS | 40 min |
| Jun 17, 5:43 AM CDT | Areal Flood Advisory | BIS | 106 min |
| Jun 17, 6:44 AM CDT | Flash Flood Warning | BIS | 5 hr |
| Jun 17, 8:06 AM CDT | Areal Flood Advisory | BIS | 3 hr |
| Jun 17, 11:01 AM CDT | Areal Flood Warning | BIS | 22 hr |
| Jun 17, 12:21 PM CDT | Tornado Watch | SPC | 9 hr |
| Jun 21, 9:54 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 12:50 AM CDT | Severe Thunderstorm Warning | BIS | 55 min |
| Jun 22, 1:42 AM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 22, 1:44 AM CDT | Severe Thunderstorm Warning | BIS | 61 min |
| Jun 22, 1:54 AM CDT | Areal Flood Advisory | BIS | 3 hr |
| Jun 22, 2:38 AM CDT | Severe Thunderstorm Warning | BIS | 67 min |
| Jun 24, 7:23 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 24, 8:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 24, 10:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 25, 2:45 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 25, 1:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 3:14 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 25, 3:57 PM CDT | Severe Thunderstorm Warning | BIS | 63 min |
| Jun 25, 4:07 PM CDT | Severe Thunderstorm Warning | BIS | 53 min |
| Jun 25, 4:35 PM CDT | Areal Flood Advisory | BIS | 3 hr |
| Jun 25, 4:36 PM CDT | Severe Thunderstorm Warning | BIS | 54 min |
| Jun 25, 4:45 PM CDT | Tornado Warning | BIS | 30 min |
| Jun 25, 4:59 PM CDT | Severe Thunderstorm Warning | BIS | 46 min |
| Jun 25, 5:10 PM CDT | Severe Thunderstorm Warning | BIS | 65 min |
| Jun 25, 5:40 PM CDT | Severe Thunderstorm Warning | BIS | 65 min |
| Jun 25, 6:24 PM CDT | Severe Thunderstorm Warning | BIS | 66 min |
| Jun 25, 6:59 PM CDT | Severe Thunderstorm Warning | BIS | 61 min |
| Jun 25, 9:02 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 26, 2:26 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 26, 2:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 4:30 PM CDT | Areal Flood Advisory | BIS | 3 hr |
| Jun 26, 5:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 30, 11:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 3, 1:43 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 10, 8:57 PM CDT | Severe Thunderstorm Warning | BIS | 33 min |
| Jul 10, 10:29 PM CDT | Severe Thunderstorm Warning | BIS | 33 min |
| Jul 12, 8:38 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 12, 11:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 13, 2:26 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 13, 1:50 PM CDT | Tornado Watch | SPC | 9 hr |
| Jul 13, 6:56 PM CDT | Severe Thunderstorm Warning | BIS | 30 min |
| Jul 13, 10:36 PM CDT | Mesoscale Discussion | SPC | 24 min |
| Jul 13, 10:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 13, 11:58 PM CDT | Severe Thunderstorm Warning | BIS | 62 min |
| Jul 13, 11:59 PM CDT | Tornado Warning | BIS | 46 min |
| Jul 14, 12:25 AM CDT | Flash Flood Warning | BIS | 4 hr |
| Jul 14, 12:42 AM CDT | Tornado Warning | BIS | 48 min |
| Jul 14, 12:44 AM CDT | Severe Thunderstorm Warning | BIS | 61 min |
| Jul 14, 1:08 AM CDT | Tornado Warning | BIS | 52 min |
| Jul 14, 1:45 AM CDT | Severe Thunderstorm Warning | BIS | 60 min |
| Jul 14, 1:49 AM CDT | Flash Flood Warning | BIS | 6 hr |
| Jul 14, 1:52 AM CDT | Tornado Warning | BIS | 23 min |
| Jul 14, 2:10 AM CDT | Tornado Warning | BIS | 35 min |
| Jul 14, 2:15 AM CDT | Tornado Warning | BIS | 30 min |
| Jul 14, 2:42 AM CDT | Severe Thunderstorm Warning | BIS | 63 min |
| Jul 14, 2:44 AM CDT | Severe Thunderstorm Warning | BIS | 61 min |
| Jul 14, 3:00 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 20, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 20, 5:17 PM CDT | Severe Thunderstorm Warning | BIS | 43 min |
| Jul 20, 5:49 PM CDT | Severe Thunderstorm Warning | BIS | 56 min |
| Jul 20, 7:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 26, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 27, 12:24 AM CDT | Severe Thunderstorm Warning | BIS | 51 min |
| Jul 27, 1:24 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 29, 4:38 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 29, 10:16 PM CDT | Severe Thunderstorm Warning | BIS | 44 min |
| Jul 29, 10:57 PM CDT | Severe Thunderstorm Warning | BIS | 63 min |
| Jul 29, 11:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jul 29, 11:47 PM CDT | Severe Thunderstorm Warning | BIS | 28 min |
| Jul 31, 1:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jul 31, 10:29 PM CDT | Mesoscale Discussion | SPC | 31 min |
| Aug 1, 12:58 AM CDT | Areal Flood Advisory | BIS | 3 hr |
| Aug 1, 3:39 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 1, 6:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 1, 8:13 PM CDT | Tornado Warning | BIS | 47 min |
| Aug 1, 8:52 PM CDT | Tornado Warning | BIS | 38 min |
| Aug 1, 9:26 PM CDT | Severe Thunderstorm Warning | BIS | 47 min |
| Aug 1, 9:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Aug 2, 1:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 2, 2:36 PM CDT | Tornado Warning | BIS | 24 min |
| Aug 2, 2:58 PM CDT | Tornado Warning | BIS | 32 min |
| Aug 2, 3:22 PM CDT | Severe Thunderstorm Warning | BIS | 53 min |
| Aug 2, 3:32 PM CDT | Areal Flood Advisory | BIS | 114 min |
| Aug 7, 2:22 AM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 12, 10:04 PM CDT | Severe Thunderstorm Warning | BIS | 56 min |
| Aug 12, 10:17 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 12, 10:53 PM CDT | Severe Thunderstorm Warning | BIS | 52 min |
| Aug 12, 11:18 PM CDT | Severe Thunderstorm Warning | BIS | 57 min |
| Aug 12, 11:42 PM CDT | Severe Thunderstorm Warning | BIS | 63 min |
| Aug 13, 12:15 AM CDT | Severe Thunderstorm Warning | BIS | 32 min |
| Aug 13, 12:31 AM CDT | Severe Thunderstorm Warning | BIS | 59 min |
| Aug 13, 12:45 AM CDT | Severe Thunderstorm Warning | BIS | 60 min |
| Aug 17, 2:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Aug 17, 3:52 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 17, 5:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Aug 21, 4:47 AM CDT | Fire Weather Watch | BIS | 10 hr |
| Aug 21, 2:51 PM CDT | Red Flag Warning | BIS | 30 hr |
| Aug 25, 3:56 PM CDT | Fire Weather Watch | BIS | 37 hr |
| Aug 26, 3:48 PM CDT | Red Flag Warning | BIS | 29 hr |
| Aug 30, 5:02 AM CDT | Mesoscale Discussion | SPC | 58 min |
| Aug 30, 1:19 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Aug 30, 3:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Sep 9, 3:35 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 9, 4:57 PM CDT | Tornado Watch | SPC | 6 hr |
| Sep 9, 8:16 PM CDT | Mesoscale Discussion | SPC | 89 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 | 42 |
| Tornado Warning | 14 |
| Severe Thunderstorm Watch | 16 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 38 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 3 |
| River Flood Warning | 1 |
| Areal Flood Advisory | 11 |
| Fire | |
| Red Flag Warning | 6 |
| Fire Weather Watch | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.