Alert archive / North Dakota / Ward County
Weather alerts in Ward County, North Dakota, 2020
82 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Ward County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 82
- Warnings
- 34
- Watches
- 12
- Advisories
- 0
- Busiest month
- July36 alerts
- Busiest day
- July 17, 202011 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Ward County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 30 | 17 | 43% | 19 | 84% | 24 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Bismarck, ND: tornado warnings | 18 | 4 | 78% | 13 | 31% | 6 min |
| NWS Bismarck, ND: severe thunderstorm warnings | 291 | 171 | 41% | 339 | 83% | 25 min |
| NWS Bismarck, ND: flash flood warnings | 1 | 0 | 100% | 0 |
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, 5:00 PM CDT | Special Weather Statement | BIS | 45 min |
| Apr 19, 5:07 AM CDT | Red Flag Warning | BIS | 15 hr |
| Jun 6, 9:57 AM CDT | Special Weather Statement | BIS | 18 min |
| Jun 6, 8:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 6, 9:11 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 6, 11:42 PM CDT | Special Weather Statement | BIS | 48 min |
| Jun 7, 12:11 AM CDT | Severe Thunderstorm Warning | BIS | 49 min |
| Jun 7, 3:59 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 2:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 14, 3:20 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 14, 6:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 14, 8:25 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 1:13 AM CDT | Severe Thunderstorm Warning | BIS | 47 min |
| Jun 15, 1:53 AM CDT | Severe Thunderstorm Warning | BIS | 37 min |
| Jun 15, 2:24 AM CDT | Severe Thunderstorm Warning | BIS | 55 min |
| Jun 16, 6:55 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 16, 10:27 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 16, 10:28 PM CDT | Severe Thunderstorm Warning | BIS | 62 min |
| Jun 16, 10:56 PM CDT | Severe Thunderstorm Warning | BIS | 34 min |
| Jun 17, 12:09 AM CDT | Severe Thunderstorm Warning | BIS | 51 min |
| Jun 27, 5:23 PM CDT | Special Weather Statement | BIS | 37 min |
| Jun 28, 1:54 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 3:09 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 28, 4:48 PM CDT | Severe Thunderstorm Warning | BIS | 42 min |
| Jun 28, 5:23 PM CDT | Severe Thunderstorm Warning | BIS | 67 min |
| Jun 28, 6:00 PM CDT | Severe Thunderstorm Warning | BIS | 45 min |
| Jun 28, 6:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 7:24 PM CDT | Severe Thunderstorm Warning | BIS | 66 min |
| Jun 29, 4:56 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 29, 9:15 PM CDT | Severe Thunderstorm Warning | BIS | 60 min |
| Jun 29, 9:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 10:17 PM CDT | Special Weather Statement | BIS | 43 min |
| Jul 2, 5:13 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 2, 5:47 PM CDT | Severe Thunderstorm Warning | BIS | 43 min |
| Jul 2, 6:29 PM CDT | Severe Thunderstorm Warning | BIS | 46 min |
| Jul 2, 7:28 PM CDT | Severe Thunderstorm Warning | BIS | 27 min |
| Jul 2, 7:36 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 4, 10:42 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 5, 1:25 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 1:27 AM CDT | Severe Thunderstorm Warning | BIS | 63 min |
| Jul 5, 2:42 AM CDT | Special Weather Statement | BIS | 33 min |
| Jul 7, 7:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Jul 7, 7:59 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 7, 10:30 PM CDT | Severe Thunderstorm Warning | BIS | 45 min |
| Jul 7, 11:09 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Jul 7, 11:12 PM CDT | Severe Thunderstorm Warning | BIS | 63 min |
| Jul 8, 12:14 AM CDT | Severe Thunderstorm Warning | BIS | 61 min |
| Jul 10, 2:08 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 10, 3:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 9:09 PM CDT | Severe Thunderstorm Warning | BIS | 51 min |
| Jul 12, 10:55 PM CDT | Severe Thunderstorm Warning | BIS | 20 min |
| Jul 13, 1:40 AM CDT | Severe Thunderstorm Warning | BIS | 41 min |
| Jul 17, 11:56 AM CDT | Severe Thunderstorm Warning | BIS | 64 min |
| Jul 17, 12:10 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 17, 12:30 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 17, 12:54 PM CDT | Special Weather Statement | BIS | 51 min |
| Jul 17, 1:04 PM CDT | Severe Thunderstorm Warning | BIS | 41 min |
| Jul 17, 1:17 PM CDT | Severe Thunderstorm Warning | BIS | 58 min |
| Jul 17, 1:57 PM CDT | Special Weather Statement | BIS | 33 min |
| Jul 17, 2:06 PM CDT | Severe Thunderstorm Warning | BIS | 54 min |
| Jul 17, 3:08 PM CDT | Special Weather Statement | BIS | 52 min |
| Jul 17, 5:20 PM CDT | Severe Thunderstorm Warning | BIS | 25 min |
| Jul 17, 6:04 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 18, 1:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 24, 12:35 AM CDT | Special Weather Statement | BIS | 25 min |
| Jul 24, 1:03 AM CDT | Special Weather Statement | BIS | 27 min |
| Jul 24, 1:22 AM CDT | Severe Thunderstorm Warning | BIS | 53 min |
| Jul 25, 3:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 4, 7:18 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Aug 12, 6:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 14, 6:19 PM CDT | Severe Thunderstorm Warning | BIS | 56 min |
| Aug 14, 6:34 PM CDT | Severe Thunderstorm Warning | BIS | 56 min |
| Aug 27, 10:17 PM CDT | Special Weather Statement | BIS | 28 min |
| Aug 31, 3:56 AM CDT | Fire Weather Watch | BIS | 11 hr |
| Aug 31, 2:29 PM CDT | Red Flag Warning | BIS | 30 hr |
| Sep 1, 5:56 AM CDT | Fire Weather Watch | BIS | 8 hr |
| Sep 1, 2:23 PM CDT | Red Flag Warning | BIS | 32 hr |
| Oct 5, 2:35 PM CDT | Fire Weather Watch | BIS | 13 hr |
| Oct 6, 3:51 AM CDT | Red Flag Warning | BIS | 12 hr |
| Oct 27, 11:55 AM CDT | Special Weather Statement | BIS | 50 min |
| Oct 27, 1:03 PM CDT | Special Weather Statement | BIS | 57 min |
| Nov 17, 2:38 AM CST | Special Weather Statement | BIS | 52 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 | 30 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 21 |
| Special Weather Statement | 15 |
| Fire | |
| Red Flag Warning | 4 |
| Fire Weather Watch | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.