Alert archive / Minnesota / Clearwater County
Weather alerts in Clearwater County, Minnesota, 2008
129 weather alerts in 2008, 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 2008. Tap one for its archive.
- Alerts
- 129
- Warnings
- 43
- Watches
- 18
- Advisories
- 41
- Busiest month
- June27 alerts
- Busiest day
- July 11, 200812 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 6 tornado warnings covering Clearwater County in 2008 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 13 minutes after it went out.
Clearwater County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 6 | 2 | 67% | 1 | 100% | 13 min |
| Severe thunderstorm warnings | 22 | 12 | 45% | 7 | 100% | 29 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Forks, ND: tornado warnings | 58 | 26 | 55% | 53 | 75% | 21 min |
| NWS Grand Forks, ND: severe thunderstorm warnings | 217 | 91 | 58% | 196 | 76% | 26 min |
| NWS Grand Forks, ND: flash flood warnings | 9 | 7 | 22% | 17 | 82% | 112 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 10, 6:35 AM CST | Freezing Rain Advisory | FGF | 5 hr |
| Jan 10, 12:07 PM CST | Freezing Rain Advisory | FGF | 3 hr |
| Jan 13, 9:14 PM CST | Wind Chill Advisory | FGF | 7 hr |
| Jan 14, 4:27 AM CST | Wind Chill Advisory | FGF | 4 hr |
| Jan 16, 1:04 AM CST | Winter Weather Advisory | FGF | 11 hr |
| Jan 17, 3:46 AM CST | Wind Chill Advisory | FGF | 56 hr |
| Jan 17, 3:18 PM CST | Wind Chill Warning | FGF | 21 hr |
| Jan 28, 4:19 AM CST | Winter Weather Advisory | FGF | 35 hr |
| Jan 28, 3:20 PM CST | Wind Chill Warning | FGF | 45 hr |
| Jan 30, 11:54 AM CST | Wind Chill Advisory | FGF | 8 hr |
| Feb 7, 3:47 AM CST | Blizzard Watch | FGF | 42 hr |
| Feb 8, 3:37 PM CST | Winter Weather Advisory | FGF | 26 hr |
| Feb 9, 3:12 PM CST | Wind Chill Warning | FGF | 21 hr |
| Feb 10, 10:58 AM CST | Wind Chill Advisory | FGF | 5 hr |
| Feb 13, 3:58 AM CST | Winter Weather Advisory | FGF | 24 hr |
| Feb 13, 3:24 PM CST | Wind Chill Advisory | FGF | 21 hr |
| Feb 13, 4:09 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 16, 4:11 AM CST | Winter Weather Advisory | FGF | 17 hr |
| Feb 17, 7:40 PM CST | Wind Chill Advisory | FGF | 19 hr |
| Feb 19, 3:56 AM CST | Wind Chill Advisory | FGF | 6 hr |
| Feb 19, 10:13 AM CST | Wind Chill Warning | FGF | 18 hr |
| Mar 2, 9:16 AM CST | Winter Weather Advisory | FGF | 12 hr |
| Apr 4, 2:52 PM CDT | Winter Storm Watch | FGF | 27 hr |
| Apr 5, 5:38 PM CDT | Winter Storm Warning | FGF | 34 hr |
| Apr 5, 5:38 PM CDT | Winter Weather Advisory | FGF | 34 hr |
| Apr 5, 11:58 PM CDT | Mesoscale Discussion | SPC | 4 hr |
| Apr 9, 3:27 PM CDT | Winter Storm Watch | FGF | 23 hr |
| Apr 10, 2:30 PM CDT | Winter Storm Warning | FGF | 24 hr |
| Apr 15, 4:46 AM CDT | Wind Advisory | FGF | 16 hr |
| Apr 24, 3:26 PM CDT | Winter Storm Watch | FGF | 13 hr |
| Apr 25, 4:54 AM CDT | Winter Storm Warning | FGF | 38 hr |
| May 2, 4:15 AM CDT | Wind Advisory | FGF | 17 hr |
| May 16, 4:19 AM CDT | Wind Advisory | FGF | 17 hr |
| May 17, 2:56 PM CDT | Frost Advisory | FGF | 17 hr |
| May 20, 3:04 PM CDT | Frost Advisory | FGF | 16 hr |
| May 20, 3:04 PM CDT | Freeze Warning | FGF | 16 hr |
| May 24, 9:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 25, 3:00 PM CDT | Severe Thunderstorm Warning | FGF | 38 min |
| May 26, 3:12 PM CDT | Freeze Warning | FGF | 16 hr |
| May 31, 2:07 PM CDT | Mesoscale Discussion | SPC | 53 min |
| May 31, 2:35 PM CDT | Severe Thunderstorm Warning | FGF | 40 min |
| May 31, 2:51 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 31, 3:11 PM CDT | Severe Thunderstorm Warning | FGF | 34 min |
| May 31, 3:39 PM CDT | Severe Thunderstorm Warning | FGF | 54 min |
| May 31, 3:44 PM CDT | Severe Thunderstorm Warning | FGF | 61 min |
| May 31, 4:05 PM CDT | Severe Thunderstorm Warning | FGF | 30 min |
| May 31, 4:48 PM CDT | Severe Thunderstorm Warning | FGF | 42 min |
| May 31, 6:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 5, 5:12 AM CDT | Flash Flood Watch | FGF | 22 hr |
| Jun 6, 10:09 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 6, 10:28 AM CDT | Tornado Watch | SPC | 5 hr |
| Jun 11, 8:25 AM CDT | High Wind Warning | FGF | 5 hr |
| Jun 11, 11:24 AM CDT | Wind Advisory | FGF | 8 hr |
| Jun 11, 1:44 PM CDT | High Wind Warning | FGF | 5 hr |
| Jun 11, 7:10 PM CDT | Wind Advisory | FGF | 110 min |
| Jun 12, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 12, 5:17 PM CDT | Severe Thunderstorm Warning | FGF | 58 min |
| Jun 12, 5:43 PM CDT | Severe Thunderstorm Warning | FGF | 62 min |
| Jun 12, 6:45 PM CDT | Severe Thunderstorm Warning | FGF | 60 min |
| Jun 12, 6:48 PM CDT | Severe Thunderstorm Warning | FGF | 57 min |
| Jun 12, 7:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 12, 7:36 PM CDT | Severe Thunderstorm Warning | FGF | 54 min |
| Jun 12, 7:40 PM CDT | Severe Thunderstorm Warning | FGF | 28 min |
| Jun 12, 7:48 PM CDT | Severe Thunderstorm Warning | FGF | 57 min |
| Jun 12, 8:37 PM CDT | Tornado Warning | FGF | 33 min |
| Jun 14, 3:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 14, 5:40 PM CDT | Severe Thunderstorm Warning | FGF | 65 min |
| Jun 14, 6:01 PM CDT | Severe Thunderstorm Warning | FGF | 59 min |
| Jun 14, 6:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 14, 6:07 PM CDT | Severe Thunderstorm Warning | FGF | 53 min |
| Jun 14, 6:58 PM CDT | Severe Thunderstorm Warning | FGF | 49 min |
| Jun 14, 8:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 14, 8:44 PM CDT | Severe Thunderstorm Warning | FGF | 61 min |
| Jun 14, 9:25 PM CDT | Severe Thunderstorm Warning | FGF | 50 min |
| Jun 27, 12:32 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 3:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 1, 4:50 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 1, 7:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 3:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jul 10, 11:19 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 11, 6:36 AM CDT | Mesoscale Discussion | SPC | 24 min |
| Jul 11, 12:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 11, 2:26 PM CDT | Tornado Watch | SPC | 6 hr |
| Jul 11, 3:34 PM CDT | Tornado Warning | FGF | 41 min |
| Jul 11, 3:37 PM CDT | Tornado Warning | FGF | 38 min |
| Jul 11, 3:45 PM CDT | Tornado Warning | FGF | 60 min |
| Jul 11, 4:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 11, 4:14 PM CDT | Tornado Warning | FGF | 61 min |
| Jul 11, 4:40 PM CDT | Tornado Warning | FGF | 44 min |
| Jul 11, 5:03 PM CDT | Severe Thunderstorm Warning | FGF | 57 min |
| Jul 11, 5:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 12, 4:20 AM CDT | Wind Advisory | FGF | 18 hr |
| Jul 14, 3:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jul 14, 7:34 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 14, 9:33 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Jul 14, 11:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jul 16, 6:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jul 20, 1:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 24, 4:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 29, 12:36 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Jul 29, 12:56 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 29, 2:37 AM CDT | Severe Thunderstorm Warning | FGF | 53 min |
| Aug 21, 3:48 AM CDT | Wind Advisory | FGF | 17 hr |
| Aug 26, 4:12 AM CDT | Wind Advisory | FGF | 16 hr |
| Aug 28, 2:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Aug 31, 3:29 AM CDT | Wind Advisory | FGF | 17 hr |
| Sep 12, 4:13 AM CDT | Dense Fog Advisory | FGF | 6 hr |
| Sep 26, 10:15 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Sep 26, 12:39 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Oct 2, 3:33 PM CDT | Frost Advisory | FGF | 18 hr |
| Oct 13, 3:20 PM CDT | Frost Advisory | FGF | 18 hr |
| Oct 25, 4:13 AM CDT | Wind Advisory | FGF | 39 hr |
| Oct 25, 3:37 PM CDT | Winter Weather Advisory | FGF | 24 hr |
| Nov 12, 2:00 AM CST | Winter Weather Advisory | FGF | 8 hr |
| Dec 12, 3:39 AM CST | Winter Storm Watch | FGF | 25 hr |
| Dec 13, 4:03 AM CST | Winter Storm Warning | FGF | 48 hr |
| Dec 14, 5:25 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Dec 15, 12:04 AM CST | Wind Chill Warning | FGF | 12 hr |
| Dec 15, 11:28 AM CST | Wind Chill Advisory | FGF | 6 hr |
| Dec 18, 2:48 PM CST | Winter Storm Watch | FGF | 24 hr |
| Dec 19, 4:01 AM CST | Winter Storm Warning | FGF | 38 hr |
| Dec 20, 3:18 PM CST | Wind Chill Warning | FGF | 20 hr |
| Dec 20, 3:18 PM CST | Winter Weather Advisory | FGF | 20 hr |
| Dec 21, 11:04 AM CST | Wind Chill Advisory | FGF | 10 hr |
| Dec 22, 3:25 PM CST | Winter Weather Advisory | FGF | 24 hr |
| Dec 26, 2:48 PM CST | Winter Weather Advisory | FGF | 20 hr |
| Dec 28, 2:53 PM CST | Winter Storm Watch | FGF | 20 hr |
| Dec 28, 2:53 PM CST | Winter Weather Advisory | FGF | 17 hr |
| Dec 29, 10:51 AM CST | Winter Weather Advisory | FGF | 28 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 | 22 |
| Tornado Warning | 6 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 27 |
| Flooding | |
| Flash Flood Watch | 1 |
| Winter | |
| Winter Storm Warning | 5 |
| Blizzard Watch | 1 |
| Winter Storm Watch | 6 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 14 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 6 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 10 |
| Wind and dust | |
| High Wind Warning | 2 |
| Wind Advisory | 10 |
| 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 archive20072009
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.