Alert archive / Minnesota / Nicollet County
Weather alerts in Nicollet County, Minnesota, 2015
107 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Nicollet County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 107
- Warnings
- 21
- Watches
- 22
- Advisories
- 31
- Busiest month
- June20 alerts
- Busiest day
- June 22, 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.
Nicollet County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 3 | 57% | 0 | ||
| 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 Twin Cities, MN: tornado warnings | 33 | 8 | 76% | 25 | 52% | 14 min |
| NWS Twin Cities, MN: severe thunderstorm warnings | 131 | 67 | 49% | 307 | 63% | 28 min |
| NWS Twin Cities, MN: flash flood warnings | 14 | 10 | 29% | 21 | 76% | 58 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 3, 3:38 AM CST | Wind Chill Advisory | MPX | 54 hr |
| Jan 3, 3:44 PM CST | Winter Storm Watch | MPX | 36 hr |
| Jan 5, 3:41 AM CST | Winter Weather Advisory | MPX | 18 hr |
| Jan 5, 9:27 PM CST | Wind Chill Advisory | MPX | 13 hr |
| Jan 6, 3:52 AM CST | Wind Chill Warning | MPX | 29 hr |
| Jan 7, 3:38 AM CST | Blizzard Watch | MPX | 25 hr |
| Jan 7, 9:00 AM CST | Wind Chill Advisory | MPX | 21 hr |
| Jan 8, 4:20 AM CST | Blizzard Warning | MPX | 23 hr |
| Jan 8, 3:49 PM CST | Wind Chill Advisory | MPX | 20 hr |
| Jan 9, 3:21 AM CST | Wind Chill Advisory | MPX | 30 hr |
| Jan 12, 2:46 PM CST | Wind Chill Advisory | MPX | 20 hr |
| Jan 16, 3:17 PM CST | Wind Advisory | MPX | 24 hr |
| Jan 28, 2:34 PM CST | Wind Advisory | MPX | 18 hr |
| Jan 28, 3:02 PM CST | Freezing Rain Advisory | MPX | 15 hr |
| Feb 3, 12:13 PM CST | Winter Storm Warning | MPX | 7 hr |
| Feb 8, 1:19 AM CST | Freezing Rain Advisory | MPX | 9 hr |
| Feb 9, 3:49 PM CST | Winter Weather Advisory | MPX | 32 hr |
| Feb 13, 2:20 PM CST | Wind Chill Advisory | MPX | 22 hr |
| Feb 17, 3:05 AM CST | Wind Chill Advisory | MPX | 33 hr |
| Feb 20, 3:22 PM CST | Wind Chill Advisory | MPX | 67 hr |
| Mar 1, 9:58 PM CST | Blizzard Watch | MPX | 6 hr |
| Mar 2, 4:08 AM CST | Blizzard Warning | MPX | 34 hr |
| Mar 2, 4:08 AM CST | Winter Weather Advisory | MPX | 37 hr |
| Mar 14, 10:50 AM CDT | Fire Weather Watch | MPX | 17 hr |
| Mar 15, 3:27 AM CDT | Red Flag Warning | MPX | 16 hr |
| Mar 21, 3:35 PM CDT | Winter Weather Advisory | MPX | 36 hr |
| Mar 28, 2:48 PM CDT | Wind Advisory | MPX | 27 hr |
| Mar 31, 3:03 PM CDT | Wind Advisory | MPX | 29 hr |
| Apr 1, 3:38 AM CDT | Fire Weather Watch | MPX | 31 hr |
| Apr 1, 3:38 AM CDT | Red Flag Warning | MPX | 15 hr |
| Apr 1, 3:50 PM CDT | Red Flag Warning | MPX | 19 hr |
| Apr 2, 10:39 AM CDT | Red Flag Warning | MPX | 8 hr |
| Apr 12, 8:15 PM CDT | Special Weather Statement | MPX | 30 min |
| Apr 15, 3:57 AM CDT | Red Flag Warning | MPX | 16 hr |
| Apr 20, 3:21 AM CDT | Wind Advisory | MPX | 11 hr |
| Apr 21, 3:19 AM CDT | Wind Advisory | MPX | 15 hr |
| Apr 21, 3:19 PM CDT | Fire Weather Watch | MPX | 13 hr |
| Apr 22, 4:29 AM CDT | Red Flag Warning | MPX | 15 hr |
| May 3, 3:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 3, 4:31 PM CDT | Severe Thunderstorm Warning | MPX | 44 min |
| May 17, 12:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| May 17, 6:16 PM CDT | Wind Advisory | MPX | 10 hr |
| Jun 9, 3:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 9, 7:52 PM CDT | Special Weather Statement | MPX | 23 min |
| Jun 9, 7:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 10, 1:41 PM CDT | Flash Flood Watch | MPX | 23 hr |
| Jun 20, 2:52 AM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 20, 3:18 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 20, 4:26 AM CDT | Severe Thunderstorm Warning | MPX | 34 min |
| Jun 20, 4:54 AM CDT | Special Weather Statement | MPX | 36 min |
| Jun 20, 5:11 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 22, 1:17 AM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 22, 2:25 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 22, 4:53 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 5:34 AM CDT | Severe Thunderstorm Warning | MPX | 41 min |
| Jun 22, 6:00 AM CDT | Severe Thunderstorm Warning | MPX | 45 min |
| Jun 22, 6:22 AM CDT | High Wind Warning | MPX | 5 hr |
| Jun 22, 7:42 AM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 29, 12:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 29, 1:57 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 29, 4:49 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 29, 7:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 5, 8:54 PM CDT | Flash Flood Watch | MPX | 16 hr |
| Jul 6, 2:40 AM CDT | Special Weather Statement | MPX | 20 min |
| Jul 11, 5:02 AM CDT | Heat Advisory | MPX | 38 hr |
| Jul 12, 5:28 PM CDT | Tornado Watch | SPC | 5 hr |
| Jul 12, 7:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 12, 9:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 12, 9:59 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 12, 11:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Jul 17, 7:18 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 17, 8:39 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 17, 11:03 PM CDT | Severe Thunderstorm Warning | MPX | 42 min |
| Jul 17, 11:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 11:44 PM CDT | Severe Thunderstorm Warning | MPX | 46 min |
| Jul 24, 2:23 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Aug 1, 6:04 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Aug 6, 3:23 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 6, 6:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 6, 8:13 PM CDT | Special Weather Statement | MPX | 47 min |
| Aug 6, 8:52 PM CDT | Special Weather Statement | MPX | 23 min |
| Aug 6, 9:02 PM CDT | Severe Thunderstorm Warning | MPX | 43 min |
| Aug 16, 10:56 AM CDT | Flash Flood Watch | MPX | 8 hr |
| Aug 16, 4:01 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 16, 5:13 PM CDT | Special Weather Statement | MPX | 47 min |
| Aug 18, 3:08 AM CDT | Flash Flood Watch | MPX | 10 hr |
| Aug 22, 2:13 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Aug 22, 2:35 PM CDT | Tornado Watch | SPC | 7 hr |
| Aug 22, 5:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Sep 2, 1:47 AM CDT | Special Weather Statement | MPX | 118 min |
| Sep 3, 5:41 AM CDT | Dense Fog Advisory | MPX | 3 hr |
| Sep 6, 2:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Sep 8, 1:59 AM CDT | Flash Flood Watch | MPX | 7 hr |
| Sep 17, 3:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 11, 3:14 PM CDT | Wind Advisory | MPX | 27 hr |
| Oct 16, 3:33 AM CDT | Freeze Warning | MPX | 29 hr |
| Nov 10, 2:43 PM CST | Wind Advisory | MPX | 51 hr |
| Nov 18, 3:17 PM CST | Wind Advisory | MPX | 25 hr |
| Nov 28, 3:29 PM CST | Winter Storm Watch | MPX | 36 hr |
| Nov 29, 2:15 PM CST | Winter Storm Warning | MPX | 37 hr |
| Nov 30, 12:03 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 5, 11:26 PM CST | Dense Fog Advisory | MPX | 13 hr |
| Dec 6, 4:37 PM CST | Dense Fog Advisory | MPX | 11 hr |
| Dec 14, 7:09 AM CST | Wind Advisory | MPX | 4 hr |
| Dec 25, 3:16 PM CST | Winter Weather Advisory | MPX | 27 hr |
| Dec 26, 3:05 PM CST | Winter Storm Watch | MPX | 37 hr |
| Dec 27, 3:13 PM CST | Winter Storm Warning | MPX | 49 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 | 7 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 25 |
| Special Weather Statement | 8 |
| Flooding | |
| Flash Flood Watch | 5 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 3 |
| Blizzard Watch | 2 |
| Winter Storm Watch | 3 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 5 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 1 |
| Wind Chill Advisory | 9 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 11 |
| Fire | |
| Red Flag Warning | 6 |
| Fire Weather Watch | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
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.