Alert archive / Minnesota / Watonwan County
Weather alerts in Watonwan County, Minnesota, 2009
95 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Watonwan County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 95
- Warnings
- 14
- Watches
- 18
- Advisories
- 32
- Busiest month
- August17 alerts
- Busiest day
- August 8, 20098 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 Watonwan County in 2009 had a tornado report inside them.
Watonwan County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 5 | 2 | 60% | 1 | 100% | 10 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Twin Cities, MN: tornado warnings | 51 | 17 | 67% | 44 | 59% | 11 min |
| NWS Twin Cities, MN: severe thunderstorm warnings | 94 | 49 | 48% | 135 | 62% | 22 min |
| NWS Twin Cities, MN: flash flood warnings | 11 | 7 | 36% | 24 | 58% | 73 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 2, 4:14 PM CST | Winter Weather Advisory | MPX | 36 hr |
| Jan 8, 3:29 AM CST | Winter Weather Advisory | MPX | 39 hr |
| Jan 11, 4:16 AM CST | Blizzard Watch | MPX | 25 hr |
| Jan 11, 3:30 PM CST | Winter Weather Advisory | MPX | 33 hr |
| Jan 12, 4:53 AM CST | Wind Chill Advisory | MPX | 31 hr |
| Jan 12, 4:53 AM CST | Winter Storm Warning | MPX | 19 hr |
| Jan 12, 10:56 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 13, 3:31 AM CST | Winter Weather Advisory | MPX | 24 hr |
| Jan 14, 4:29 AM CST | Wind Chill Warning | MPX | 56 hr |
| Jan 23, 4:06 AM CST | Wind Chill Advisory | MPX | 32 hr |
| Feb 2, 2:52 PM CST | Wind Chill Advisory | MPX | 19 hr |
| Feb 10, 12:07 AM CST | Wind Advisory | MPX | 12 hr |
| Feb 20, 4:17 AM CST | Winter Weather Advisory | MPX | 26 hr |
| Feb 24, 3:12 PM CST | Winter Storm Watch | MPX | 24 hr |
| Feb 25, 3:15 PM CST | Winter Storm Warning | MPX | 33 hr |
| Feb 26, 6:33 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Mar 7, 2:12 PM CST | Winter Weather Advisory | MPX | 23 hr |
| Mar 8, 5:28 AM CDT | Winter Storm Watch | MPX | 35 hr |
| Mar 9, 8:51 AM CDT | Dense Fog Advisory | MPX | 4 hr |
| Mar 9, 2:47 PM CDT | Winter Storm Warning | MPX | 37 hr |
| Mar 11, 3:46 AM CDT | Wind Chill Advisory | MPX | 9 hr |
| Mar 22, 3:42 AM CDT | Wind Advisory | MPX | 24 hr |
| Mar 22, 11:28 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 23, 4:41 AM CDT | Wind Advisory | MPX | 14 hr |
| Mar 31, 1:26 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 2, 2:49 PM CDT | Winter Storm Watch | MPX | 43 hr |
| Apr 4, 10:04 AM CDT | Winter Weather Advisory | MPX | 26 hr |
| Apr 14, 3:10 PM CDT | Fire Weather Watch | MPX | 12 hr |
| Apr 15, 2:53 AM CDT | Red Flag Warning | MPX | 16 hr |
| Apr 23, 3:38 AM CDT | Red Flag Warning | MPX | 15 hr |
| Apr 23, 3:52 AM CDT | Wind Advisory | MPX | 15 hr |
| May 6, 1:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 12, 3:16 AM CDT | Wind Advisory | MPX | 16 hr |
| May 13, 3:26 AM CDT | Wind Advisory | MPX | 19 hr |
| May 19, 3:50 PM CDT | Wind Advisory | MPX | 27 hr |
| Jun 17, 7:43 AM CDT | Special Weather Statement | MPX | 62 min |
| Jun 17, 7:01 PM CDT | Tornado Watch | SPC | 5 hr |
| Jun 17, 7:12 PM CDT | Tornado Warning | MPX | 33 min |
| Jun 18, 3:12 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 18, 3:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 18, 7:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 18, 10:30 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Jun 18, 10:53 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 21, 3:17 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 23, 3:47 AM CDT | Heat Advisory | MPX | 12 hr |
| Jun 23, 11:31 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 23, 12:01 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 23, 12:13 PM CDT | Special Weather Statement | MPX | 77 min |
| Jun 23, 12:29 PM CDT | Severe Thunderstorm Warning | MPX | 61 min |
| Jul 7, 2:13 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 7, 3:56 PM CDT | Mesoscale Discussion | SPC | 34 min |
| Jul 7, 6:07 PM CDT | Special Weather Statement | MPX | 53 min |
| Jul 7, 6:33 PM CDT | Mesoscale Discussion | SPC | 27 min |
| Jul 7, 6:55 PM CDT | Severe Thunderstorm Warning | MPX | 55 min |
| Jul 9, 2:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 9, 8:58 PM CDT | Severe Thunderstorm Warning | MPX | 42 min |
| Jul 9, 9:07 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 9, 11:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jul 14, 1:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 14, 2:40 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 14, 6:39 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Jul 21, 12:20 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Jul 31, 9:18 PM CDT | Special Weather Statement | MPX | 42 min |
| Aug 2, 8:32 PM CDT | Mesoscale Discussion | SPC | 28 min |
| Aug 2, 8:41 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 2, 10:20 PM CDT | Severe Thunderstorm Warning | MPX | 39 min |
| Aug 2, 11:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 7, 8:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Aug 7, 10:14 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 8, 1:29 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 8, 4:19 AM CDT | Heat Advisory | MPX | 14 hr |
| Aug 8, 12:16 PM CDT | Mesoscale Discussion | SPC | 29 min |
| Aug 8, 12:47 PM CDT | Tornado Watch | SPC | 5 hr |
| Aug 8, 3:27 PM CDT | Mesoscale Discussion | SPC | 33 min |
| Aug 8, 5:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 13, 7:09 AM CDT | Special Weather Statement | MPX | 51 min |
| Aug 19, 8:38 PM CDT | Special Weather Statement | MPX | 67 min |
| Aug 25, 2:42 AM CDT | Special Weather Statement | MPX | 63 min |
| Aug 25, 2:58 AM CDT | Severe Thunderstorm Warning | MPX | 47 min |
| Sep 26, 2:37 PM CDT | Wind Advisory | MPX | 30 hr |
| Sep 28, 8:14 AM CDT | Wind Advisory | MPX | 11 hr |
| Oct 1, 12:08 PM CDT | Areal Flood Advisory | MPX | 5 hr |
| Oct 11, 3:23 PM CDT | Winter Weather Advisory | MPX | 17 hr |
| Dec 6, 3:19 PM CST | Blizzard Watch | MPX | 25 hr |
| Dec 7, 4:22 PM CST | Blizzard Warning | MPX | 47 hr |
| Dec 8, 9:38 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 9, 10:13 AM CST | Wind Chill Advisory | MPX | 24 hr |
| Dec 9, 3:42 PM CST | Winter Weather Advisory | MPX | 8 hr |
| Dec 13, 3:19 AM CST | Winter Weather Advisory | MPX | 30 hr |
| Dec 14, 3:04 PM CST | Wind Chill Advisory | MPX | 20 hr |
| Dec 21, 2:28 PM CST | Winter Weather Advisory | MPX | 15 hr |
| Dec 21, 3:51 PM CST | Winter Storm Watch | MPX | 21 hr |
| Dec 22, 12:23 PM CST | Winter Storm Warning | MPX | 4 days |
| Dec 23, 4:26 AM CST | Winter Weather Advisory | MPX | 8 hr |
| Dec 25, 3:07 PM CST | Winter Weather Advisory | MPX | 13 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 | 5 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 24 |
| Special Weather Statement | 7 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 4 |
| Blizzard Watch | 2 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 13 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Wind Chill Warning | 1 |
| Wind Chill Advisory | 6 |
| Wind and dust | |
| Wind Advisory | 9 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| 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 archive20082010
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.