Alert archive / North Dakota / Walsh County
Weather alerts in Walsh County, North Dakota, 2016
124 weather alerts in 2016, 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 2016. Tap one for its archive.
- Alerts
- 124
- Warnings
- 43
- Watches
- 15
- Advisories
- 38
- Busiest month
- July28 alerts
- Busiest day
- June 17, 201610 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Walsh County in 2016 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.
Walsh County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 2 | 0% | |
| Severe thunderstorm warnings | 24 | 23 | 4% | 22 | 100% | 30 min |
| Flash flood warnings | 1 | 1 | 0% | 1 | 100% | 52 min |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 32 | 17 | 47% | 46 | 61% | 13 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 218 | 185 | 15% | 502 | 86% | 27 min |
| NWS Grand Forks, ND: flash flood warnings | 10 | 9 | 10% | 22 | 100% | 97 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 8, 3:03 PM CST | Wind Chill Advisory | FGF | 45 hr |
| Jan 11, 2:28 PM CST | Wind Chill Advisory | FGF | 22 hr |
| Jan 15, 3:53 AM CST | Wind Chill Advisory | FGF | 38 hr |
| Jan 16, 10:05 AM CST | Wind Chill Warning | FGF | 26 hr |
| Jan 16, 10:05 AM CST | Wind Chill Advisory | FGF | 50 hr |
| Jan 20, 5:08 AM CST | Freezing Rain Advisory | FGF | 7 hr |
| Jan 27, 8:55 AM CST | Wind Advisory | FGF | 6 hr |
| Feb 5, 3:13 PM CST | Blizzard Watch | FGF | 23 hr |
| Feb 6, 2:37 PM CST | Blizzard Warning | FGF | 39 hr |
| Feb 6, 2:37 PM CST | Winter Weather Advisory | FGF | 51 hr |
| Feb 7, 4:22 AM CST | Blizzard Warning | FGF | 11 hr |
| Feb 11, 3:19 PM CST | Wind Chill Advisory | FGF | 21 hr |
| Feb 12, 3:54 PM CST | Wind Chill Advisory | FGF | 18 hr |
| Feb 19, 12:36 AM CST | Freezing Rain Advisory | FGF | 8 hr |
| Feb 28, 3:08 PM CST | Winter Weather Advisory | FGF | 12 hr |
| Mar 13, 9:59 PM CDT | Dense Fog Advisory | FGF | 12 hr |
| Mar 14, 10:05 AM CDT | Dense Fog Advisory | FGF | 115 min |
| Apr 1, 3:30 PM CDT | Wind Advisory | FGF | 12 hr |
| Apr 9, 4:01 AM CDT | Wind Advisory | FGF | 14 hr |
| Apr 10, 11:41 AM CDT | Wind Advisory | FGF | 6 hr |
| Apr 20, 3:38 AM CDT | Dense Fog Advisory | FGF | 6 hr |
| May 3, 5:41 AM CDT | Red Flag Warning | FGF | 14 hr |
| May 5, 12:22 PM CDT | Red Flag Warning | FGF | 9 hr |
| May 12, 3:54 PM CDT | Frost Advisory | FGF | 17 hr |
| May 13, 4:07 AM CDT | Freeze Warning | FGF | 29 hr |
| May 14, 3:21 PM CDT | Frost Advisory | FGF | 18 hr |
| May 22, 9:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| May 25, 11:17 AM CDT | Special Weather Statement | FGF | 58 min |
| Jun 9, 11:29 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Jun 9, 11:58 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 10, 2:56 AM CDT | Severe Thunderstorm Warning | FGF | 49 min |
| Jun 10, 2:59 AM CDT | Mesoscale Discussion | SPC | 61 min |
| Jun 17, 6:46 AM CDT | Severe Thunderstorm Warning | FGF | 59 min |
| Jun 17, 7:20 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 17, 7:32 AM CDT | Mesoscale Discussion | SPC | 28 min |
| Jun 17, 7:33 AM CDT | Severe Thunderstorm Warning | FGF | 57 min |
| Jun 17, 7:53 AM CDT | Flash Flood Warning | FGF | 7 hr |
| Jun 17, 8:15 AM CDT | Severe Thunderstorm Warning | FGF | 60 min |
| Jun 17, 8:24 AM CDT | High Wind Warning | FGF | 39 min |
| Jun 17, 9:03 AM CDT | High Wind Warning | FGF | 110 min |
| Jun 17, 12:02 PM CDT | River Flood Warning | FGF | 4 days |
| Jun 17, 3:34 PM CDT | River Flood Watch | FGF | 4 days |
| Jun 18, 10:20 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 19, 1:46 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 19, 4:10 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Jun 19, 4:22 AM CDT | Severe Thunderstorm Warning | FGF | 38 min |
| Jun 19, 4:58 AM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Jun 24, 9:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 24, 10:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 12:04 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 25, 2:59 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 4, 1:34 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 4, 4:59 PM CDT | Severe Thunderstorm Warning | FGF | 61 min |
| Jul 4, 5:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 4, 8:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 7, 3:10 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 6:07 PM CDT | Areal Flood Warning | FGF | 3 hr |
| Jul 9, 4:42 PM CDT | Severe Thunderstorm Warning | FGF | 48 min |
| Jul 9, 5:21 PM CDT | Severe Thunderstorm Warning | FGF | 39 min |
| Jul 9, 5:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 9, 5:43 PM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Jul 9, 6:03 PM CDT | Severe Thunderstorm Warning | FGF | 42 min |
| Jul 9, 6:24 PM CDT | Severe Thunderstorm Warning | FGF | 51 min |
| Jul 9, 6:46 PM CDT | Severe Thunderstorm Warning | FGF | 44 min |
| Jul 9, 7:30 PM CDT | Severe Thunderstorm Warning | FGF | 60 min |
| Jul 10, 10:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jul 10, 10:40 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 11, 3:07 AM CDT | High Wind Warning | FGF | 4 hr |
| Jul 19, 1:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 19, 3:27 PM CDT | Mesoscale Discussion | SPC | 33 min |
| Jul 19, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 19, 6:12 PM CDT | Severe Thunderstorm Warning | FGF | 63 min |
| Jul 19, 6:45 PM CDT | Tornado Warning | FGF | 45 min |
| Jul 19, 7:00 PM CDT | Severe Thunderstorm Warning | FGF | 60 min |
| Jul 20, 3:05 AM CDT | Heat Advisory | FGF | 18 hr |
| Jul 20, 8:41 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 20, 9:59 PM CDT | Severe Thunderstorm Warning | FGF | 46 min |
| Jul 20, 11:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Aug 1, 3:19 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 1, 5:21 PM CDT | Severe Thunderstorm Warning | FGF | 54 min |
| Aug 1, 6:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 3, 3:38 PM CDT | Tornado Watch | SPC | 7 hr |
| Aug 3, 6:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Aug 3, 7:15 PM CDT | Severe Thunderstorm Warning | FGF | 60 min |
| Aug 3, 7:29 PM CDT | Severe Thunderstorm Warning | FGF | 46 min |
| Aug 3, 7:55 PM CDT | Severe Thunderstorm Warning | FGF | 65 min |
| Aug 3, 9:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 10, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 10, 10:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Aug 27, 3:22 PM CDT | Severe Thunderstorm Warning | FGF | 38 min |
| Aug 27, 3:52 PM CDT | Severe Thunderstorm Warning | FGF | 38 min |
| Aug 27, 4:05 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 27, 4:25 PM CDT | Severe Thunderstorm Warning | FGF | 50 min |
| Aug 27, 5:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Aug 28, 5:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Sep 4, 10:05 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Sep 13, 3:48 AM CDT | Frost Advisory | FGF | 28 hr |
| Sep 25, 10:15 AM CDT | Wind Advisory | FGF | 9 hr |
| Sep 26, 12:36 PM CDT | Frost Advisory | FGF | 19 hr |
| Sep 27, 2:21 PM CDT | Frost Advisory | FGF | 8 hr |
| Oct 6, 3:00 PM CDT | Freeze Warning | FGF | 19 hr |
| Oct 7, 3:00 PM CDT | Freeze Warning | FGF | 19 hr |
| Oct 8, 2:48 PM CDT | Frost Advisory | FGF | 17 hr |
| Oct 9, 12:38 PM CDT | Wind Advisory | FGF | 6 hr |
| Oct 27, 5:06 AM CDT | Dense Fog Advisory | FGF | 5 hr |
| Nov 21, 3:29 PM CST | Winter Weather Advisory | FGF | 28 hr |
| Nov 26, 3:15 PM CST | Dense Fog Advisory | FGF | 27 hr |
| Nov 27, 3:36 PM CST | Winter Weather Advisory | FGF | 18 hr |
| Dec 5, 3:58 AM CST | Winter Storm Warning | FGF | 39 hr |
| Dec 5, 3:58 AM CST | Winter Weather Advisory | FGF | 65 hr |
| Dec 5, 3:27 PM CST | Blizzard Warning | FGF | 39 hr |
| Dec 5, 4:55 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 8, 3:17 PM CST | Wind Chill Advisory | FGF | 21 hr |
| Dec 9, 2:59 PM CST | Wind Chill Advisory | FGF | 21 hr |
| Dec 11, 2:58 PM CST | Wind Chill Advisory | FGF | 21 hr |
| Dec 12, 3:28 PM CST | Wind Chill Advisory | FGF | 19 hr |
| Dec 13, 2:54 PM CST | Wind Chill Advisory | FGF | 45 hr |
| Dec 16, 4:15 AM CST | Wind Chill Warning | FGF | 56 hr |
| Dec 18, 12:00 PM CST | Wind Chill Advisory | FGF | 3 hr |
| Dec 22, 3:45 PM CST | Blizzard Watch | FGF | 24 hr |
| Dec 23, 3:41 PM CST | Blizzard Warning | FGF | 3 days |
| Dec 25, 6:33 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 30, 3:43 AM CST | Winter Weather Advisory | FGF | 20 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 archive20152017
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.