Alert archive / Minnesota / Clearwater County
Weather alerts in Clearwater County, Minnesota, 2016
98 weather alerts in 2016, 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 2016. Tap one for its archive.
- Alerts
- 98
- Warnings
- 34
- Watches
- 13
- Advisories
- 30
- Busiest month
- July23 alerts
- Busiest day
- June 17, 20169 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, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 17 | 17 | 0% | 4 | 100% | 31 min |
| Flash flood warnings | 0 | 0 |
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 6, 9:05 PM CST | Winter Weather Advisory | FGF | 15 hr |
| Jan 6, 10:08 PM CST | Winter Storm Warning | FGF | 14 hr |
| Jan 7, 12:29 PM CST | Winter Weather Advisory | FGF | 15 hr |
| 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 14, 6:39 AM CST | Winter Weather Advisory | FGF | 14 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 31, 3:43 AM CST | Dense Fog Advisory | FGF | 5 hr |
| Feb 5, 3:13 PM CST | Winter Storm Watch | FGF | 23 hr |
| Feb 6, 2:37 PM CST | Winter Storm Warning | FGF | 25 hr |
| Feb 6, 2:37 PM CST | Winter Weather Advisory | FGF | 51 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, 8:35 AM CST | Dense Fog Advisory | FGF | 3 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 |
| May 2, 3:13 PM CDT | Fire Weather Watch | FGF | 14 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 6, 3:42 AM CDT | Red Flag Warning | FGF | 15 hr |
| May 6, 3:26 PM CDT | Fire Weather Watch | FGF | 13 hr |
| May 7, 4:27 AM CDT | Red Flag Warning | FGF | 15 hr |
| May 9, 4:21 AM CDT | Red Flag Warning | FGF | 14 hr |
| May 13, 4:07 AM CDT | Freeze Warning | FGF | 29 hr |
| May 14, 4:01 AM CDT | Freeze Warning | FGF | 29 hr |
| May 25, 8:42 AM CDT | Special Weather Statement | FGF | 63 min |
| May 26, 1:05 AM CDT | Severe Thunderstorm Warning | FGF | 55 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, 8:15 AM CDT | Severe Thunderstorm Warning | FGF | 60 min |
| Jun 17, 8:55 AM CDT | Severe Thunderstorm Warning | FGF | 65 min |
| Jun 17, 8:59 AM CDT | Severe Thunderstorm Warning | FGF | 61 min |
| Jun 17, 9:05 AM CDT | Severe Thunderstorm Warning | FGF | 55 min |
| Jun 17, 9:46 AM CDT | Severe Thunderstorm Warning | FGF | 44 min |
| Jun 17, 9:51 AM CDT | Severe Thunderstorm Warning | FGF | 54 min |
| Jun 17, 9:56 AM CDT | Mesoscale Discussion | SPC | 34 min |
| Jun 18, 5:06 AM CDT | Dense Fog Advisory | FGF | 4 hr |
| Jun 19, 3:24 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| 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, 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, 8:35 PM CDT | Special Weather Statement | FGF | 40 min |
| Jul 10, 10:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jul 11, 1:01 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Jul 11, 1:45 AM CDT | Severe Thunderstorm Warning | FGF | 60 min |
| Jul 11, 1:51 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 11, 2:01 AM CDT | Severe Thunderstorm Warning | FGF | 59 min |
| Jul 18, 3:17 PM CDT | Excessive Heat Watch | FGF | 36 hr |
| Jul 19, 7:52 PM CDT | Severe Thunderstorm Warning | FGF | 40 min |
| Jul 19, 8:10 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 19, 8:43 PM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Jul 19, 9:34 PM CDT | Severe Thunderstorm Warning | FGF | 56 min |
| Jul 19, 9:59 PM CDT | Severe Thunderstorm Warning | FGF | 61 min |
| Jul 20, 3:05 AM CDT | Excessive Heat Warning | FGF | 18 hr |
| 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, 11:16 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jul 21, 12:03 AM CDT | Severe Thunderstorm Warning | FGF | 57 min |
| Jul 21, 12:43 AM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Aug 3, 9:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 3, 10:29 PM CDT | Severe Thunderstorm Warning | FGF | 61 min |
| Aug 3, 10:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 3, 11:31 PM CDT | Special Weather Statement | FGF | 59 min |
| Aug 4, 12:47 AM CDT | Special Weather Statement | FGF | 43 min |
| Aug 10, 11:49 AM CDT | Flash Flood Watch | FGF | 16 hr |
| Aug 10, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 10, 10:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Aug 28, 5:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Aug 28, 9:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Aug 28, 11:31 PM CDT | Severe Thunderstorm Warning | FGF | 59 min |
| Aug 29, 4:36 AM CDT | Areal Flood Advisory | FGF | 3 hr |
| Sep 13, 3:48 AM CDT | Frost Advisory | FGF | 28 hr |
| Oct 6, 3:00 PM CDT | Frost Advisory | 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 |
| Nov 16, 4:01 AM CST | Winter Storm Watch | FGF | 33 hr |
| Nov 17, 1:04 PM CST | Winter Storm Warning | FGF | 29 hr |
| Nov 17, 1:04 PM CST | Winter Weather Advisory | FGF | 29 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 |
| 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, 4:55 PM CST | Mesoscale Discussion | SPC | 6 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 | Winter Storm Watch | FGF | 3 days |
| Dec 24, 4:16 AM CST | Winter Storm Warning | FGF | 56 hr |
| Dec 24, 2:13 PM CST | Ice Storm Warning | FGF | 34 hr |
| Dec 25, 5:13 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 26, 12:21 AM CST | Winter Weather Advisory | FGF | 19 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.