Alert archive / North Dakota / Walsh County
Weather alerts in Walsh County, North Dakota, 2013
146 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Walsh County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 146
- Warnings
- 40
- Watches
- 25
- Advisories
- 63
- Busiest month
- May22 alerts
- Busiest day
- May 21, 20136 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 2 tornado warnings covering Walsh County in 2013 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 12 minutes after it went out.
Walsh County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 2 | 0% | 2 | 100% | 12 min |
| Severe thunderstorm warnings | 5 | 5 | 0% | 6 | 50% | 24 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 17 | 7 | 59% | 16 | 69% | 20 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 125 | 99 | 21% | 264 | 74% | 25 min |
| NWS Grand Forks, ND: flash flood warnings | 5 | 5 | 0% | 12 | 100% | 67 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, 1:39 AM CST | Wind Chill Advisory | FGF | 7 hr |
| Jan 5, 2:16 AM CST | Dense Fog Advisory | FGF | 4 hr |
| Jan 9, 1:11 AM CST | Wind Advisory | FGF | 5 hr |
| Jan 9, 3:42 PM CST | Winter Storm Watch | FGF | 36 hr |
| Jan 10, 9:46 AM CST | Wind Advisory | FGF | 5 hr |
| Jan 11, 4:01 AM CST | Blizzard Warning | FGF | 31 hr |
| Jan 11, 5:54 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 12, 10:33 AM CST | Winter Weather Advisory | FGF | 5 hr |
| Jan 12, 3:15 PM CST | Wind Chill Advisory | FGF | 19 hr |
| Jan 18, 4:11 AM CST | Blizzard Watch | FGF | 25 hr |
| Jan 18, 2:43 PM CST | Blizzard Warning | FGF | 30 hr |
| Jan 19, 3:16 PM CST | Wind Chill Advisory | FGF | 27 hr |
| Jan 20, 4:22 AM CST | Wind Chill Warning | FGF | 51 hr |
| Jan 21, 10:51 AM CST | Wind Chill Advisory | FGF | 24 hr |
| Jan 22, 3:20 PM CST | Wind Chill Advisory | FGF | 48 hr |
| Jan 24, 3:14 PM CST | Winter Weather Advisory | FGF | 19 hr |
| Jan 24, 8:00 PM CST | Wind Chill Advisory | FGF | 16 hr |
| Jan 29, 2:40 PM CST | Wind Chill Advisory | FGF | 38 hr |
| Jan 30, 3:40 PM CST | Wind Chill Warning | FGF | 37 hr |
| Jan 30, 3:40 PM CST | Wind Chill Advisory | FGF | 44 hr |
| Feb 2, 3:14 PM CST | Winter Weather Advisory | FGF | 8 hr |
| Feb 8, 4:17 AM CST | Winter Storm Watch | FGF | 48 hr |
| Feb 10, 3:58 AM CST | Winter Weather Advisory | FGF | 24 hr |
| Feb 13, 4:49 AM CST | Winter Weather Advisory | FGF | 28 hr |
| Feb 17, 4:48 AM CST | Blizzard Watch | FGF | 17 hr |
| Feb 17, 3:39 PM CST | Blizzard Warning | FGF | 26 hr |
| Feb 17, 3:39 PM CST | Winter Weather Advisory | FGF | 29 hr |
| Feb 18, 8:43 PM CST | Wind Chill Advisory | FGF | 38 hr |
| Feb 26, 8:42 PM CST | Dense Fog Advisory | FGF | 10 hr |
| Mar 2, 4:02 AM CST | Winter Storm Watch | FGF | 41 hr |
| Mar 3, 5:05 AM CST | Winter Storm Warning | FGF | 49 hr |
| Mar 13, 7:21 PM CDT | Freezing Rain Advisory | FGF | 4 hr |
| Mar 14, 4:33 AM CDT | Winter Storm Watch | FGF | 11 hr |
| Mar 14, 3:36 PM CDT | Winter Weather Advisory | FGF | 31 hr |
| Mar 16, 4:37 AM CDT | Winter Storm Watch | FGF | 26 hr |
| Mar 16, 7:49 PM CDT | Winter Storm Warning | FGF | 47 hr |
| Mar 17, 8:45 PM CDT | Blizzard Warning | FGF | 22 hr |
| Mar 19, 3:31 PM CDT | Wind Chill Advisory | FGF | 18 hr |
| Mar 28, 5:43 PM CDT | Dense Fog Advisory | FGF | 22 hr |
| Apr 12, 4:07 AM CDT | Winter Storm Watch | FGF | 26 hr |
| Apr 13, 6:25 AM CDT | Winter Storm Warning | FGF | 55 hr |
| Apr 25, 4:25 PM CDT | River Flood Warning | FGF | 8 days |
| Apr 25, 4:25 PM CDT | River Flood Warning | FGF | 10 days |
| Apr 25, 5:43 PM CDT | River Flood Warning | FGF | 19 days |
| Apr 25, 5:43 PM CDT | River Flood Warning | FGF | 24 days |
| Apr 26, 9:30 AM CDT | Flood Watch | FGF | 4 days |
| Apr 27, 3:42 PM CDT | Areal Flood Warning | FGF | 3 days |
| Apr 30, 2:56 AM CDT | Areal Flood Warning | FGF | 15 hr |
| Apr 30, 4:21 AM CDT | Wind Advisory | FGF | 15 hr |
| Apr 30, 5:48 PM CDT | Areal Flood Warning | FGF | 6 days |
| May 10, 12:57 PM CDT | Wind Advisory | FGF | 8 hr |
| May 11, 9:25 AM CDT | Wind Advisory | FGF | 4 hr |
| May 12, 3:37 PM CDT | High Wind Watch | FGF | 37 hr |
| May 13, 4:46 AM CDT | Red Flag Warning | FGF | 15 hr |
| May 13, 3:33 PM CDT | Fire Weather Watch | FGF | 13 hr |
| May 14, 4:15 AM CDT | Wind Advisory | FGF | 17 hr |
| May 14, 4:59 AM CDT | Red Flag Warning | FGF | 16 hr |
| May 19, 11:58 AM CDT | River Flood Watch | FGF | 5 days |
| May 19, 8:24 PM CDT | Wind Advisory | FGF | 35 hr |
| May 19, 9:18 PM CDT | River Flood Watch | FGF | 5 days |
| May 20, 7:15 AM CDT | Flood Watch | FGF | 29 hr |
| May 20, 11:42 AM CDT | Areal Flood Warning | FGF | 27 hr |
| May 20, 9:14 PM CDT | River Flood Watch | FGF | 5 days |
| May 20, 9:33 PM CDT | River Flood Warning | FGF | 5 days |
| May 20, 9:33 PM CDT | River Flood Warning | FGF | 6 days |
| May 21, 12:07 PM CDT | River Flood Warning | FGF | 5 days |
| May 21, 12:07 PM CDT | River Flood Warning | FGF | 6 days |
| May 21, 2:58 PM CDT | Areal Flood Warning | FGF | 7 days |
| May 31, 7:21 AM CDT | Areal Flood Warning | FGF | 30 hr |
| May 31, 11:11 AM CDT | River Flood Warning | FGF | 5 days |
| May 31, 11:11 AM CDT | River Flood Warning | FGF | 6 days |
| May 31, 1:53 PM CDT | Tornado Warning | FGF | 52 min |
| May 31, 9:10 PM CDT | Wind Advisory | FGF | 3 hr |
| Jun 1, 12:39 PM CDT | Areal Flood Warning | FGF | 5 days |
| Jun 4, 10:32 AM CDT | Flood Watch | FGF | 20 hr |
| Jun 10, 4:11 AM CDT | Dense Fog Advisory | FGF | 6 hr |
| Jun 20, 1:18 PM CDT | Flash Flood Watch | FGF | 39 hr |
| Jun 22, 4:27 AM CDT | Flash Flood Watch | FGF | 26 hr |
| Jun 22, 9:27 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 22, 9:52 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 25, 3:49 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 25, 11:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 26, 10:57 AM CDT | River Flood Warning | FGF | 10 days |
| Jul 6, 1:42 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 6, 3:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jul 6, 7:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 9, 1:27 AM CDT | Severe Thunderstorm Warning | FGF | 48 min |
| Jul 9, 2:09 AM CDT | Special Weather Statement | FGF | 66 min |
| Jul 9, 2:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 12, 11:46 PM CDT | Dense Fog Advisory | FGF | 8 hr |
| Jul 13, 7:57 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jul 13, 10:49 PM CDT | Special Weather Statement | FGF | 56 min |
| Jul 18, 6:49 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 21, 9:02 PM CDT | Severe Thunderstorm Warning | FGF | 58 min |
| Jul 21, 9:07 PM CDT | Tornado Warning | FGF | 38 min |
| Jul 21, 9:59 PM CDT | Severe Thunderstorm Warning | FGF | 61 min |
| Jul 24, 4:36 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 29, 2:46 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 11, 6:37 AM CDT | Dense Fog Advisory | FGF | 3 hr |
| Aug 24, 12:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Aug 24, 1:13 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 24, 5:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 28, 5:01 PM CDT | Special Weather Statement | FGF | 59 min |
| Aug 28, 5:05 PM CDT | Severe Thunderstorm Warning | FGF | 55 min |
| Aug 28, 5:33 PM CDT | Areal Flood Advisory | FGF | 5 hr |
| Aug 29, 6:12 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 29, 6:46 AM CDT | Severe Thunderstorm Warning | FGF | 59 min |
| Aug 29, 7:39 AM CDT | Special Weather Statement | FGF | 66 min |
| Aug 30, 6:02 AM CDT | Dense Fog Advisory | FGF | 4 hr |
| Aug 30, 7:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Sep 8, 3:30 PM CDT | Flood Watch | FGF | 15 hr |
| Sep 18, 8:27 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 18, 11:25 PM CDT | Dense Fog Advisory | FGF | 10 hr |
| Sep 20, 3:42 PM CDT | Frost Advisory | FGF | 17 hr |
| Sep 23, 6:16 AM CDT | Wind Advisory | FGF | 9 hr |
| Sep 30, 3:25 PM CDT | Wind Advisory | FGF | 27 hr |
| Oct 1, 9:09 PM CDT | Frost Advisory | FGF | 9 hr |
| Oct 5, 3:45 PM CDT | Frost Advisory | FGF | 17 hr |
| Oct 12, 3:40 PM CDT | Frost Advisory | FGF | 18 hr |
| Oct 19, 4:07 AM CDT | Winter Weather Advisory | FGF | 33 hr |
| Oct 25, 10:02 AM CDT | Wind Advisory | FGF | 12 hr |
| Nov 2, 3:32 PM CDT | Wind Advisory | FGF | 27 hr |
| Nov 20, 8:42 PM CST | Winter Weather Advisory | FGF | 7 hr |
| Nov 22, 3:33 PM CST | Wind Chill Advisory | FGF | 18 hr |
| Dec 1, 3:46 PM CST | Winter Storm Watch | FGF | 37 hr |
| Dec 1, 3:46 PM CST | Winter Weather Advisory | FGF | 37 hr |
| Dec 3, 4:54 AM CST | Winter Storm Warning | FGF | 49 hr |
| Dec 5, 3:58 AM CST | Wind Chill Advisory | FGF | 3 days |
| Dec 6, 3:29 PM CST | Wind Chill Warning | FGF | 21 hr |
| Dec 8, 3:06 PM CST | Wind Chill Advisory | FGF | 22 hr |
| Dec 9, 3:24 PM CST | Wind Chill Advisory | FGF | 20 hr |
| Dec 10, 2:24 PM CST | Wind Chill Advisory | FGF | 25 hr |
| Dec 12, 3:27 PM CST | Wind Chill Advisory | FGF | 30 hr |
| Dec 14, 7:11 PM CST | Wind Chill Advisory | FGF | 11 hr |
| Dec 17, 3:20 AM CST | Wind Advisory | FGF | 4 hr |
| Dec 18, 3:39 PM CST | Wind Chill Advisory | FGF | 20 hr |
| Dec 18, 3:39 PM CST | Winter Weather Advisory | FGF | 8 hr |
| Dec 18, 11:53 PM CST | Wind Chill Advisory | FGF | 12 hr |
| Dec 19, 3:40 PM CST | Wind Chill Advisory | FGF | 15 hr |
| Dec 21, 3:20 AM CST | Wind Chill Advisory | FGF | 3 days |
| Dec 23, 3:51 PM CST | Winter Weather Advisory | FGF | 24 hr |
| Dec 28, 4:10 AM CST | Winter Weather Advisory | FGF | 17 hr |
| Dec 28, 10:21 AM CST | Blizzard Warning | FGF | 11 hr |
| Dec 28, 6:46 PM CST | Wind Chill Warning | FGF | 17 hr |
| Dec 29, 11:51 AM CST | Wind Chill Advisory | FGF | 10 hr |
| Dec 30, 9:58 AM CST | Wind Chill Advisory | FGF | 32 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.