Alert archive / Wisconsin / Pepin County
Weather alerts in Pepin County, Wisconsin, 2009
61 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Pepin County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 61
- Warnings
- 12
- Watches
- 9
- Advisories
- 17
- Busiest month
- August17 alerts
- Busiest day
- August 8, 20097 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Pepin County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 3 | 1 | 67% | 0 | ||
| Flash flood warnings | 3 | 2 | 33% | 5 | 40% | 124 min |
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, 3:30 PM CST | Winter Weather Advisory | MPX | 33 hr |
| Jan 12, 4:53 AM CST | Wind Chill Advisory | MPX | 31 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 |
| Jan 24, 3:03 PM CST | Wind Chill Advisory | MPX | 21 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, 11:47 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Mar 7, 2:12 PM CST | Winter Weather Advisory | MPX | 23 hr |
| Mar 8, 12:58 PM CDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 9, 8:51 AM CDT | Dense Fog Advisory | MPX | 4 hr |
| Mar 9, 2:47 PM CDT | Winter Weather Advisory | MPX | 37 hr |
| Mar 30, 5:44 AM CDT | Winter Weather Advisory | MPX | 33 hr |
| Apr 23, 3:38 AM CDT | Red Flag Warning | MPX | 15 hr |
| Apr 24, 3:18 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 24, 4:41 PM CDT | Severe Thunderstorm Warning | MPX | 49 min |
| Apr 24, 9:40 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 16, 4:07 AM CDT | Frost Advisory | MPX | 27 hr |
| May 19, 3:50 PM CDT | Wind Advisory | MPX | 27 hr |
| Jun 17, 9:22 PM CDT | Special Weather Statement | MPX | 113 min |
| Jun 17, 9:53 PM CDT | Special Weather Statement | MPX | 97 min |
| Jun 17, 11:07 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 17, 11:20 PM CDT | Severe Thunderstorm Warning | MPX | 40 min |
| Jun 17, 11:53 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 7:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 18, 7:34 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 8:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 23, 4:29 PM CDT | Special Weather Statement | MPX | 61 min |
| Jul 24, 9:28 AM CDT | Severe Thunderstorm Warning | MPX | 48 min |
| Jul 24, 9:51 AM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 27, 2:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Aug 2, 8:41 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 2, 11:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 3, 12:12 AM CDT | Special Weather Statement | MPX | 48 min |
| Aug 8, 1:29 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 8, 2:03 AM CDT | Flash Flood Warning | MPX | 4 hr |
| Aug 8, 4:06 AM CDT | Flash Flood Watch | MPX | 19 hr |
| Aug 8, 9:29 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Aug 8, 3:27 PM CDT | Mesoscale Discussion | SPC | 33 min |
| Aug 8, 3:46 PM CDT | Tornado Watch | SPC | 8 hr |
| Aug 8, 5:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 13, 9:45 PM CDT | Flash Flood Warning | MPX | 3 hr |
| Aug 13, 10:16 PM CDT | Special Weather Statement | MPX | 44 min |
| Aug 14, 12:11 AM CDT | Flash Flood Warning | MPX | 6 hr |
| Aug 14, 12:43 AM CDT | Special Weather Statement | MPX | 47 min |
| Aug 19, 4:34 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Aug 19, 4:49 PM CDT | Tornado Watch | SPC | 5 hr |
| Aug 19, 7:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Sep 27, 5:36 PM CDT | Special Weather Statement | MPX | 84 min |
| Sep 28, 8:14 AM CDT | Wind Advisory | MPX | 11 hr |
| Sep 29, 4:30 AM CDT | Frost Advisory | MPX | 28 hr |
| Nov 20, 9:53 PM CST | Dense Fog Advisory | MPX | 12 hr |
| Dec 6, 3:19 PM CST | Winter Storm Watch | MPX | 25 hr |
| Dec 7, 4:22 PM CST | Blizzard Warning | MPX | 47 hr |
| Dec 7, 4:22 PM CST | Winter Storm Warning | MPX | 47 hr |
| Dec 13, 3:19 AM CST | Winter Weather Advisory | MPX | 30 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 25, 7:05 AM CST | Winter Weather Advisory | MPX | 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 | 3 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 7 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 1 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 8 |
| Cold | |
| Wind Chill Warning | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
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.