Alert archive / Minnesota / Clearwater County
Weather alerts in Clearwater County, Minnesota, 2015
92 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Clearwater County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 92
- Warnings
- 28
- Watches
- 11
- Advisories
- 31
- Busiest month
- August16 alerts
- Busiest day
- August 12, 20157 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Clearwater County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 10 | 17% | 7 | 86% | 21 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 52 | 14 | 73% | 54 | 85% | 22 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 133 | 103 | 23% | 324 | 69% | 27 min |
| NWS Grand Forks, ND: flash flood warnings | 1 | 1 | 0% | 2 | 100% | 253 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, 4:21 AM CST | Winter Storm Watch | FGF | 24 hr |
| Jan 2, 4:17 AM CST | Winter Storm Warning | FGF | 35 hr |
| Jan 2, 4:17 AM CST | Winter Weather Advisory | FGF | 35 hr |
| Jan 3, 2:49 PM CST | Wind Chill Warning | FGF | 45 hr |
| Jan 5, 3:13 PM CST | Wind Chill Advisory | FGF | 33 hr |
| Jan 6, 3:41 AM CST | Wind Chill Warning | FGF | 32 hr |
| Jan 8, 3:33 PM CST | Wind Chill Advisory | FGF | 20 hr |
| Jan 9, 3:30 PM CST | Wind Chill Advisory | FGF | 21 hr |
| Jan 11, 2:11 PM CST | Wind Chill Advisory | FGF | 20 hr |
| Jan 12, 3:11 PM CST | Wind Chill Advisory | FGF | 19 hr |
| Jan 17, 1:22 AM CST | Freezing Rain Advisory | FGF | 7 hr |
| Jan 22, 11:03 PM CST | Freezing Rain Advisory | FGF | 8 hr |
| Jan 28, 8:03 PM CST | Freezing Rain Advisory | FGF | 7 hr |
| Jan 31, 3:16 PM CST | Wind Chill Advisory | FGF | 20 hr |
| Feb 9, 3:19 PM CST | Winter Weather Advisory | FGF | 37 hr |
| Feb 11, 4:07 AM CST | Wind Chill Advisory | FGF | 32 hr |
| Feb 13, 3:15 PM CST | Wind Chill Advisory | FGF | 23 hr |
| Feb 16, 3:29 PM CST | Wind Chill Advisory | FGF | 45 hr |
| Feb 17, 3:32 AM CST | Wind Chill Advisory | FGF | 55 hr |
| Feb 20, 2:50 PM CST | Wind Chill Advisory | FGF | 30 hr |
| Feb 21, 3:49 AM CST | Wind Chill Warning | FGF | 32 hr |
| Feb 22, 11:40 AM CST | Wind Chill Advisory | FGF | 21 hr |
| Feb 25, 3:12 PM CST | Wind Chill Advisory | FGF | 20 hr |
| Mar 3, 3:28 PM CST | Wind Chill Advisory | FGF | 21 hr |
| Mar 4, 3:34 PM CST | Wind Chill Advisory | FGF | 18 hr |
| Mar 25, 3:36 AM CDT | Wind Advisory | FGF | 14 hr |
| Mar 28, 3:33 PM CDT | Wind Advisory | FGF | 27 hr |
| Apr 11, 3:27 AM CDT | Red Flag Warning | FGF | 17 hr |
| Apr 12, 1:46 PM CDT | Fire Weather Watch | FGF | 14 hr |
| Apr 13, 3:37 AM CDT | Red Flag Warning | FGF | 16 hr |
| Apr 14, 3:31 AM CDT | Fire Weather Watch | FGF | 24 hr |
| Apr 15, 3:15 AM CDT | Red Flag Warning | FGF | 17 hr |
| Apr 15, 3:42 PM CDT | Special Weather Statement | FGF | 48 min |
| Apr 15, 4:44 PM CDT | Special Weather Statement | FGF | 61 min |
| Apr 17, 6:53 AM CDT | Red Flag Warning | FGF | 13 hr |
| May 1, 3:10 PM CDT | Fire Weather Watch | FGF | 13 hr |
| May 2, 4:22 AM CDT | Red Flag Warning | FGF | 16 hr |
| May 4, 3:04 PM CDT | Frost Advisory | FGF | 17 hr |
| May 8, 2:52 PM CDT | Frost Advisory | FGF | 18 hr |
| May 18, 3:21 AM CDT | Freeze Warning | FGF | 30 hr |
| May 19, 2:53 PM CDT | Freeze Warning | FGF | 17 hr |
| May 28, 2:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| May 29, 3:18 PM CDT | Frost Advisory | FGF | 17 hr |
| Jun 3, 12:23 AM CDT | Special Weather Statement | FGF | 52 min |
| Jun 27, 2:01 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jun 27, 2:42 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 27, 5:54 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Jul 5, 9:54 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 5, 10:40 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 5, 1:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 12, 2:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 12, 3:06 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 12, 5:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 12, 7:13 PM CDT | Severe Thunderstorm Warning | FGF | 32 min |
| Jul 12, 8:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jul 18, 2:50 AM CDT | Special Weather Statement | FGF | 40 min |
| Jul 23, 3:58 PM CDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Jul 23, 10:28 PM CDT | Mesoscale Discussion | SPC | 32 min |
| Jul 24, 12:34 AM CDT | Severe Thunderstorm Warning | FGF | 56 min |
| Jul 24, 12:41 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 1:24 AM CDT | Severe Thunderstorm Warning | FGF | 66 min |
| Jul 28, 4:02 AM CDT | Wind Advisory | FGF | 39 hr |
| Aug 12, 1:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 12, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 12, 3:56 PM CDT | Severe Thunderstorm Warning | FGF | 64 min |
| Aug 12, 4:56 PM CDT | Severe Thunderstorm Warning | FGF | 51 min |
| Aug 12, 5:13 PM CDT | Severe Thunderstorm Warning | FGF | 47 min |
| Aug 12, 5:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 5:46 PM CDT | Severe Thunderstorm Warning | FGF | 59 min |
| Aug 12, 9:57 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Aug 12, 10:05 PM CDT | Special Weather Statement | FGF | 55 min |
| Aug 12, 10:20 PM CDT | Severe Thunderstorm Warning | FGF | 55 min |
| Aug 12, 10:42 PM CDT | Severe Thunderstorm Warning | FGF | 63 min |
| Aug 12, 11:43 PM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Aug 15, 11:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Aug 22, 2:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Aug 22, 2:56 PM CDT | Tornado Watch | SPC | 8 hr |
| Aug 22, 5:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Sep 6, 2:58 PM CDT | Severe Thunderstorm Warning | FGF | 36 min |
| Sep 17, 4:25 AM CDT | Special Weather Statement | FGF | 65 min |
| Sep 17, 4:44 AM CDT | Severe Thunderstorm Warning | FGF | 17 min |
| Sep 28, 2:29 PM CDT | Freeze Warning | FGF | 18 hr |
| Oct 6, 3:41 PM CDT | Freeze Warning | FGF | 16 hr |
| Oct 11, 10:41 AM CDT | High Wind Warning | FGF | 29 hr |
| Oct 11, 3:01 PM CDT | Wind Advisory | FGF | 27 hr |
| Oct 15, 3:36 AM CDT | Freeze Warning | FGF | 30 hr |
| Nov 3, 2:46 PM CST | Dense Fog Advisory | FGF | 31 hr |
| Nov 18, 2:57 PM CST | Winter Weather Advisory | FGF | 27 hr |
| Nov 30, 4:23 AM CST | Winter Weather Advisory | FGF | 35 hr |
| Dec 14, 4:05 AM CST | Winter Storm Watch | FGF | 35 hr |
| Dec 15, 2:43 PM CST | Winter Storm Warning | FGF | 28 hr |
| Dec 16, 11:32 AM CST | Winter Weather Advisory | FGF | 8 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 | 12 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 6 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Freezing Rain Advisory | 3 |
| Winter Weather Advisory | 5 |
| Cold | |
| Freeze Warning | 5 |
| Wind Chill Warning | 3 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 15 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 5 |
| Fire Weather Watch | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.