Alert archive / North Dakota / Sargent County
Weather alerts in Sargent County, North Dakota, 2018
130 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sargent County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 130
- Warnings
- 26
- Watches
- 15
- Advisories
- 48
- Busiest month
- July25 alerts
- Busiest day
- July 3, 201811 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 2 tornado warnings covering Sargent County in 2018 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 9 minutes after it went out.
Sargent County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 1 | 100% | 9 min |
| Severe thunderstorm warnings | 9 | 8 | 11% | 10 | 80% | 32 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 26 | 16 | 38% | 36 | 69% | 16 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 188 | 168 | 11% | 533 | 84% | 26 min |
| NWS Grand Forks, ND: flash flood warnings | 2 | 2 | 0% | 6 | 100% | 90 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 |
|---|---|---|---|
| Jan 1, 11:58 AM CST | Wind Chill Advisory | FGF | 22 hr |
| Jan 9, 4:13 AM CST | Winter Storm Watch | FGF | 24 hr |
| Jan 10, 4:05 AM CST | Winter Storm Warning | FGF | 29 hr |
| Jan 10, 4:05 AM CST | Winter Weather Advisory | FGF | 36 hr |
| Jan 10, 3:11 PM CST | Winter Storm Warning | FGF | 18 hr |
| Jan 11, 8:48 AM CST | Wind Chill Advisory | FGF | 27 hr |
| Jan 12, 3:08 PM CST | Wind Chill Advisory | FGF | 20 hr |
| Jan 14, 4:08 AM CST | Wind Chill Advisory | FGF | 15 hr |
| Jan 14, 3:09 PM CST | Wind Chill Warning | FGF | 4 hr |
| Jan 14, 6:54 PM CST | Wind Chill Warning | FGF | 40 hr |
| Jan 24, 5:18 AM CST | Dense Fog Advisory | FGF | 4 hr |
| Jan 24, 9:29 PM CST | Dense Fog Advisory | FGF | 13 hr |
| Jan 31, 2:37 PM CST | Wind Chill Advisory | FGF | 24 hr |
| Feb 3, 3:02 AM CST | Wind Chill Advisory | FGF | 33 hr |
| Feb 5, 3:09 AM CST | Wind Chill Advisory | FGF | 31 hr |
| Feb 9, 2:50 PM CST | Wind Chill Advisory | FGF | 19 hr |
| Feb 19, 3:41 AM CST | Winter Weather Advisory | FGF | 32 hr |
| Feb 20, 3:36 PM CST | Wind Chill Advisory | FGF | 17 hr |
| Feb 21, 3:15 PM CST | Winter Weather Advisory | FGF | 42 hr |
| Feb 23, 3:01 PM CST | Winter Weather Advisory | FGF | 40 hr |
| Feb 28, 4:12 AM CST | Dense Fog Advisory | FGF | 7 hr |
| Mar 3, 4:05 AM CST | Winter Storm Watch | FGF | 35 hr |
| Mar 4, 2:58 PM CST | Winter Storm Warning | FGF | 32 hr |
| Mar 5, 11:24 PM CST | Winter Weather Advisory | FGF | 4 hr |
| Mar 9, 1:42 AM CST | Dense Fog Advisory | FGF | 7 hr |
| Mar 21, 3:18 PM CDT | Winter Storm Watch | FGF | 24 hr |
| Mar 22, 2:55 PM CDT | Winter Storm Warning | FGF | 27 hr |
| Mar 22, 2:55 PM CDT | Winter Weather Advisory | FGF | 44 hr |
| Mar 25, 10:19 AM CDT | Winter Weather Advisory | FGF | 12 hr |
| Mar 26, 3:28 AM CDT | Winter Weather Advisory | FGF | 15 hr |
| Mar 29, 3:54 AM CDT | Winter Storm Watch | FGF | 25 hr |
| Mar 29, 3:53 PM CDT | Winter Weather Advisory | FGF | 15 hr |
| Mar 30, 4:36 AM CDT | Winter Storm Warning | FGF | 26 hr |
| Mar 30, 4:36 AM CDT | Winter Weather Advisory | FGF | 23 hr |
| Mar 30, 1:21 PM CDT | Blizzard Warning | FGF | 15 hr |
| Apr 2, 4:08 AM CDT | Winter Weather Advisory | FGF | 23 hr |
| Apr 7, 3:43 AM CDT | Winter Weather Advisory | FGF | 39 hr |
| Apr 13, 3:16 AM CDT | Wind Advisory | FGF | 12 hr |
| Apr 29, 4:06 AM CDT | Wind Advisory | FGF | 16 hr |
| Apr 30, 5:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 4, 4:04 AM CDT | Red Flag Warning | FGF | 15 hr |
| May 7, 4:05 AM CDT | Red Flag Warning | FGF | 14 hr |
| May 8, 2:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 5:25 PM CDT | Special Weather Statement | FGF | 50 min |
| May 22, 6:16 AM CDT | Dense Fog Advisory | FGF | 3 hr |
| May 24, 2:36 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 4:48 AM CDT | Special Weather Statement | FGF | 27 min |
| Jun 5, 6:01 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 5, 9:07 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 5, 10:54 PM CDT | Special Weather Statement | FGF | 36 min |
| Jun 5, 11:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 5, 11:34 PM CDT | Special Weather Statement | FGF | 41 min |
| Jun 11, 2:36 AM CDT | Special Weather Statement | FGF | 24 min |
| Jun 12, 4:57 AM CDT | Dense Fog Advisory | FGF | 4 hr |
| Jun 15, 1:01 AM CDT | Severe Thunderstorm Warning | FGF | 44 min |
| Jun 16, 7:09 AM CDT | Special Weather Statement | FGF | 36 min |
| Jun 16, 7:19 AM CDT | Severe Thunderstorm Warning | FGF | 41 min |
| Jun 16, 7:44 AM CDT | Severe Thunderstorm Warning | FGF | 46 min |
| Jun 16, 3:12 PM CDT | Flash Flood Watch | FGF | 16 hr |
| Jun 16, 3:38 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 16, 6:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 16, 9:01 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jun 16, 10:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 28, 3:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 28, 7:40 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 28, 10:54 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 29, 2:02 AM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 29, 3:16 AM CDT | Severe Thunderstorm Warning | FGF | 59 min |
| Jun 29, 4:06 AM CDT | Severe Thunderstorm Warning | FGF | 54 min |
| Jun 29, 4:14 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 2, 5:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 2, 7:36 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 2, 8:51 PM CDT | Severe Thunderstorm Warning | FGF | 54 min |
| Jul 2, 9:27 PM CDT | Severe Thunderstorm Warning | FGF | 48 min |
| Jul 2, 9:44 PM CDT | Special Weather Statement | FGF | 46 min |
| Jul 2, 9:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 3, 1:59 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 3, 4:15 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 3, 7:00 AM CDT | Special Weather Statement | FGF | 60 min |
| Jul 3, 7:01 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 3, 7:44 AM CDT | Special Weather Statement | FGF | 46 min |
| Jul 3, 6:16 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 12:49 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 4, 1:34 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 4, 3:09 AM CDT | Severe Thunderstorm Warning | FGF | 66 min |
| Jul 6, 3:05 PM CDT | Heat Advisory | FGF | 29 hr |
| Jul 8, 1:16 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 3:52 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 5:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 8, 6:27 PM CDT | Severe Thunderstorm Warning | FGF | 52 min |
| Jul 8, 6:37 PM CDT | Tornado Warning | FGF | 38 min |
| Jul 8, 6:41 PM CDT | Tornado Warning | FGF | 49 min |
| Jul 8, 7:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 15, 6:03 AM CDT | Special Weather Statement | FGF | 42 min |
| Jul 25, 2:38 AM CDT | Special Weather Statement | FGF | 37 min |
| Aug 23, 6:01 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 23, 11:32 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Aug 25, 10:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 26, 11:56 AM CDT | Mesoscale Discussion | SPC | 109 min |
| Aug 26, 1:42 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 26, 6:15 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 26, 7:37 PM CDT | Tornado Watch | SPC | 5 hr |
| Aug 26, 10:55 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 2, 12:51 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 2, 3:00 AM CDT | Special Weather Statement | FGF | 45 min |
| Sep 27, 2:38 PM CDT | Frost Advisory | FGF | 18 hr |
| Sep 28, 3:53 AM CDT | Freeze Warning | FGF | 29 hr |
| Oct 3, 2:57 AM CDT | Wind Advisory | FGF | 16 hr |
| Oct 9, 3:11 PM CDT | Winter Weather Advisory | FGF | 37 hr |
| Oct 25, 9:55 PM CDT | Dense Fog Advisory | FGF | 12 hr |
| Nov 15, 3:00 PM CST | Winter Weather Advisory | FGF | 29 hr |
| Nov 22, 3:38 AM CST | Dense Fog Advisory | FGF | 8 hr |
| Nov 22, 3:40 PM CST | Dense Fog Advisory | FGF | 18 hr |
| Nov 27, 3:08 PM CST | Winter Weather Advisory | FGF | 33 hr |
| Nov 29, 8:19 PM CST | Dense Fog Advisory | FGF | 14 hr |
| Nov 30, 6:52 PM CST | Dense Fog Advisory | FGF | 20 hr |
| Dec 11, 2:52 PM CST | Winter Weather Advisory | FGF | 9 hr |
| Dec 11, 11:56 PM CST | Dense Fog Advisory | FGF | 11 hr |
| Dec 12, 9:38 PM CST | Winter Weather Advisory | FGF | 11 hr |
| Dec 20, 10:21 PM CST | Dense Fog Advisory | FGF | 13 hr |
| Dec 25, 4:06 AM CST | Winter Storm Watch | FGF | 11 hr |
| Dec 25, 3:11 PM CST | Winter Storm Warning | FGF | 61 hr |
| Dec 27, 4:00 AM CST | Blizzard Warning | FGF | 26 hr |
| Dec 27, 6:07 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Dec 28, 3:50 AM CST | Wind Chill Advisory | FGF | 8 hr |
| Dec 28, 2:43 PM CST | Wind Chill Advisory | FGF | 18 hr |
| Dec 30, 3:01 PM CST | Wind Chill Advisory | FGF | 23 hr |
| Dec 30, 3:01 PM CST | Winter Weather Advisory | FGF | 21 hr |
| Dec 31, 4:27 AM CST | Blizzard Warning | FGF | 14 hr |
| Dec 31, 2:24 PM CST | Wind Chill Warning | FGF | 19 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 | 9 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 12 |
| Flooding | |
| Flash Flood Watch | 1 |
| Winter | |
| Blizzard Warning | 3 |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 18 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 3 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 12 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 13 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.