Alert archive / North Dakota / Richland County
Weather alerts in Richland County, North Dakota, 2021
103 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Richland County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 103
- Warnings
- 38
- Watches
- 19
- Advisories
- 26
- Busiest month
- July18 alerts
- Busiest day
- July 26, 20218 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 1 tornado warnings covering Richland County in 2021 had a tornado report inside them; 2 of 3 tornado reports fell inside a warning, on average 5 minutes after it went out.
Richland County, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 3 | 67% | 5 min |
| Severe thunderstorm warnings | 19 | 19 | 0% | 26 | 85% | 27 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 15 | 8 | 47% | 27 | 52% | 5 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 128 | 111 | 13% | 412 | 82% | 26 min |
| NWS Grand Forks, ND: flash flood warnings | 1 | 0 | 100% | 2 | 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 |
|---|---|---|---|
| Jan 1, 6:36 PM CST | Dense Fog Advisory | FGF | 16 hr |
| Jan 7, 9:03 AM CST | Dense Fog Advisory | FGF | 26 hr |
| Jan 8, 11:03 AM CST | Dense Fog Advisory | FGF | 25 hr |
| Jan 13, 1:00 PM CST | Winter Weather Advisory | FGF | 53 hr |
| Jan 20, 3:30 AM CST | Wind Advisory | FGF | 16 hr |
| Jan 29, 2:55 PM CST | Winter Weather Advisory | FGF | 30 hr |
| Feb 4, 4:44 AM CST | Wind Chill Watch | FGF | 23 hr |
| Feb 5, 3:16 AM CST | Wind Chill Warning | FGF | 10 days |
| Feb 5, 3:16 AM CST | Wind Chill Advisory | FGF | 9 days |
| Feb 15, 12:04 PM CST | Wind Chill Advisory | FGF | 46 hr |
| Feb 22, 3:29 PM CST | Winter Weather Advisory | FGF | 33 hr |
| Mar 10, 3:39 AM CST | Winter Weather Advisory | FGF | 21 hr |
| Mar 26, 2:51 PM CDT | Fire Weather Watch | FGF | 48 hr |
| Mar 28, 3:13 PM CDT | Red Flag Warning | FGF | 32 hr |
| Mar 28, 3:16 PM CDT | Wind Advisory | FGF | 55 hr |
| Mar 31, 3:20 AM CDT | Fire Weather Watch | FGF | 11 hr |
| Mar 31, 2:32 PM CDT | Red Flag Warning | FGF | 31 hr |
| Apr 21, 11:22 AM CDT | Fire Weather Watch | FGF | 17 hr |
| Apr 22, 3:54 AM CDT | Red Flag Warning | FGF | 16 hr |
| May 1, 3:51 AM CDT | Red Flag Warning | FGF | 16 hr |
| May 5, 2:55 PM CDT | Fire Weather Watch | FGF | 12 hr |
| May 6, 3:15 AM CDT | Red Flag Warning | FGF | 19 hr |
| May 14, 5:49 PM CDT | Severe Thunderstorm Warning | FGF | 29 min |
| May 24, 1:29 AM CDT | Special Weather Statement | FGF | 46 min |
| May 25, 3:05 AM CDT | Wind Advisory | FGF | 18 hr |
| May 27, 3:56 AM CDT | Freeze Watch | FGF | 11 hr |
| May 27, 2:33 PM CDT | Freeze Warning | FGF | 17 hr |
| Jun 3, 3:34 AM CDT | Fire Weather Watch | FGF | 36 hr |
| Jun 3, 3:02 PM CDT | Red Flag Warning | FGF | 30 hr |
| Jun 4, 9:25 PM CDT | Special Weather Statement | FGF | 50 min |
| Jun 7, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 7, 10:03 PM CDT | Severe Thunderstorm Warning | FGF | 57 min |
| Jun 7, 10:08 PM CDT | Severe Thunderstorm Warning | FGF | 67 min |
| Jun 7, 11:08 PM CDT | Special Weather Statement | FGF | 52 min |
| Jun 7, 11:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 8, 3:36 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 10, 12:52 AM CDT | Special Weather Statement | FGF | 53 min |
| Jun 10, 3:43 AM CDT | Heat Advisory | FGF | 16 hr |
| Jun 11, 1:58 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 11, 4:07 AM CDT | Severe Thunderstorm Warning | FGF | 38 min |
| Jun 11, 4:37 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 11, 4:42 AM CDT | Severe Thunderstorm Warning | FGF | 63 min |
| Jun 11, 5:39 AM CDT | Severe Thunderstorm Warning | FGF | 66 min |
| Jul 19, 2:27 PM CDT | Severe Thunderstorm Warning | FGF | 63 min |
| Jul 19, 3:13 PM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Jul 23, 7:02 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 10:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 23, 11:50 PM CDT | Special Weather Statement | FGF | 55 min |
| Jul 24, 12:41 AM CDT | Severe Thunderstorm Warning | FGF | 49 min |
| Jul 25, 9:38 PM CDT | Severe Thunderstorm Warning | FGF | 37 min |
| Jul 25, 9:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 25, 10:04 PM CDT | Severe Thunderstorm Warning | FGF | 56 min |
| Jul 25, 11:01 PM CDT | Special Weather Statement | FGF | 29 min |
| Jul 25, 11:10 PM CDT | Severe Thunderstorm Warning | FGF | 55 min |
| Jul 26, 12:11 AM CDT | Special Weather Statement | FGF | 34 min |
| Jul 26, 4:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 5:22 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 26, 7:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 28, 2:48 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 28, 3:12 AM CDT | Special Weather Statement | FGF | 63 min |
| Jul 28, 3:43 AM CDT | Severe Thunderstorm Warning | FGF | 39 min |
| Aug 9, 4:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 20, 1:41 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 20, 2:24 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 22, 10:01 AM CDT | Wind Advisory | FGF | 10 hr |
| Aug 22, 3:36 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 23, 10:11 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 23, 11:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Aug 24, 1:12 AM CDT | Severe Thunderstorm Warning | FGF | 63 min |
| Aug 24, 2:14 AM CDT | Severe Thunderstorm Warning | FGF | 46 min |
| Aug 26, 12:02 PM CDT | High Wind Warning | FGF | 3 hr |
| Aug 28, 7:08 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Oct 9, 2:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Oct 9, 5:46 PM CDT | Severe Thunderstorm Warning | FGF | 59 min |
| Oct 9, 6:35 PM CDT | Tornado Warning | FGF | 25 min |
| Oct 9, 6:43 PM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Oct 9, 7:26 PM CDT | Severe Thunderstorm Warning | FGF | 64 min |
| Oct 9, 8:06 PM CDT | Severe Thunderstorm Warning | FGF | 41 min |
| Oct 15, 11:45 AM CDT | Freeze Warning | FGF | 21 hr |
| Oct 26, 3:37 AM CDT | Wind Advisory | FGF | 14 hr |
| Oct 28, 1:41 AM CDT | Dense Fog Advisory | FGF | 7 hr |
| Nov 10, 3:06 PM CST | Winter Weather Advisory | FGF | 45 hr |
| Nov 13, 2:39 PM CST | Wind Advisory | FGF | 6 hr |
| Nov 13, 5:29 PM CST | High Wind Warning | FGF | 4 hr |
| Nov 13, 9:05 PM CST | High Wind Warning | FGF | 114 min |
| Nov 16, 2:59 AM CST | Wind Advisory | FGF | 43 hr |
| Dec 3, 3:22 AM CST | Winter Storm Watch | FGF | 35 hr |
| Dec 4, 2:05 PM CST | Winter Weather Advisory | FGF | 40 hr |
| Dec 5, 6:04 PM CST | Blizzard Warning | FGF | 9 hr |
| Dec 15, 3:25 AM CST | Winter Weather Advisory | FGF | 31 hr |
| Dec 15, 6:43 AM CST | Dense Fog Advisory | FGF | 13 hr |
| Dec 17, 3:00 AM CST | Winter Weather Advisory | FGF | 21 hr |
| Dec 17, 5:50 PM CST | Winter Storm Warning | FGF | 6 hr |
| Dec 24, 2:08 PM CST | Winter Weather Advisory | FGF | 28 hr |
| Dec 25, 3:21 AM CST | Winter Storm Watch | FGF | 24 hr |
| Dec 26, 3:22 AM CST | Winter Storm Warning | FGF | 36 hr |
| Dec 26, 4:44 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 26, 9:07 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 27, 4:27 AM CST | Blizzard Warning | FGF | 11 hr |
| Dec 27, 3:41 PM CST | Wind Chill Advisory | FGF | 26 hr |
| Dec 28, 3:21 PM CST | Wind Chill Warning | FGF | 40 hr |
| Dec 28, 3:21 PM CST | Wind Chill Advisory | FGF | 45 hr |
| Dec 30, 3:08 PM CST | Wind Chill Warning | FGF | 67 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 | 19 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 10 |
| Mesoscale Discussion | 12 |
| Special Weather Statement | 8 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 9 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 3 |
| Freeze Watch | 1 |
| Wind Chill Watch | 1 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 3 |
| Wind Advisory | 7 |
| Fire | |
| Red Flag Warning | 6 |
| Fire Weather Watch | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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.