Alert archive / Minnesota / Nicollet County
Weather alerts in Nicollet County, Minnesota, 2018
113 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 113
- Warnings
- 22
- Watches
- 22
- Advisories
- 35
- Busiest month
- May16 alerts
- Busiest day
- May 29, 20185 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, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 2 | 50% | 1 | 100% | 19 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Twin Cities, MN: tornado warnings | 12 | 7 | 42% | 30 | 77% | 16 min |
| NWS Twin Cities, MN: severe thunderstorm warnings | 159 | 73 | 54% | 311 | 66% | 21 min |
| NWS Twin Cities, MN: flash flood warnings | 8 | 1 | 88% | 10 | 30% | 87 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 1, 10:54 AM CST | Wind Chill Advisory | MPX | 23 hr |
| Jan 5, 2:32 PM CST | Wind Chill Advisory | MPX | 19 hr |
| Jan 9, 3:29 AM CST | Winter Storm Watch | MPX | 35 hr |
| Jan 10, 3:22 AM CST | Winter Weather Advisory | MPX | 39 hr |
| Jan 11, 12:02 PM CST | Wind Chill Advisory | MPX | 22 hr |
| Jan 12, 2:58 PM CST | Wind Chill Advisory | MPX | 18 hr |
| Jan 14, 3:41 AM CST | Wind Chill Warning | MPX | 53 hr |
| Jan 14, 3:41 AM CST | Wind Chill Advisory | MPX | 53 hr |
| Jan 14, 2:26 PM CST | Winter Weather Advisory | MPX | 24 hr |
| Jan 19, 4:04 AM CST | Winter Storm Watch | MPX | 59 hr |
| Jan 20, 3:48 PM CST | Winter Storm Warning | MPX | 56 hr |
| Jan 21, 3:56 AM CST | Blizzard Warning | MPX | 44 hr |
| Jan 22, 9:20 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 3, 2:57 AM CST | Wind Chill Advisory | MPX | 33 hr |
| Feb 18, 4:04 AM CST | Winter Weather Advisory | MPX | 56 hr |
| Feb 21, 2:59 PM CST | Winter Weather Advisory | MPX | 41 hr |
| Feb 22, 2:24 PM CST | Winter Storm Watch | MPX | 24 hr |
| Feb 23, 2:16 PM CST | Winter Storm Warning | MPX | 37 hr |
| Feb 23, 9:05 PM CST | Dense Fog Advisory | MPX | 12 hr |
| Mar 4, 3:10 PM CST | Winter Storm Warning | MPX | 36 hr |
| Mar 4, 3:10 PM CST | Winter Weather Advisory | MPX | 36 hr |
| Mar 21, 3:50 PM CDT | Winter Storm Watch | MPX | 36 hr |
| Mar 22, 3:55 PM CDT | Winter Storm Warning | MPX | 45 hr |
| Mar 23, 8:02 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 30, 4:05 PM CDT | Wind Advisory | MPX | 21 hr |
| Apr 2, 4:00 AM CDT | Winter Storm Watch | MPX | 10 hr |
| Apr 2, 9:46 AM CDT | Winter Weather Advisory | MPX | 39 hr |
| Apr 2, 11:14 AM CDT | Winter Storm Warning | MPX | 38 hr |
| Apr 6, 3:23 PM CDT | Winter Storm Watch | MPX | 23 hr |
| Apr 7, 2:43 PM CDT | Winter Weather Advisory | MPX | 37 hr |
| Apr 11, 3:44 PM CDT | Winter Storm Watch | MPX | 47 hr |
| Apr 12, 3:41 PM CDT | Blizzard Warning | MPX | 60 hr |
| Apr 12, 9:34 PM CDT | Winter Storm Warning | MPX | 3 days |
| Apr 13, 8:44 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 13, 3:12 PM CDT | Winter Weather Advisory | MPX | 57 hr |
| Apr 14, 10:06 AM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 14, 6:02 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 17, 3:18 AM CDT | Winter Weather Advisory | MPX | 40 hr |
| Apr 23, 10:41 AM CDT | River Flood Warning | MPX | 4 days |
| Apr 29, 3:42 AM CDT | Red Flag Warning | MPX | 17 hr |
| May 3, 3:17 PM CDT | Fire Weather Watch | MPX | 13 hr |
| May 4, 3:50 AM CDT | Red Flag Warning | MPX | 15 hr |
| May 15, 1:40 AM CDT | Dense Fog Advisory | MPX | 7 hr |
| May 22, 2:03 AM CDT | Dense Fog Advisory | MPX | 7 hr |
| May 25, 5:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| May 25, 6:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 2:24 PM CDT | Heat Advisory | MPX | 47 hr |
| May 27, 3:52 PM CDT | Heat Advisory | MPX | 27 hr |
| May 28, 3:54 PM CDT | Special Weather Statement | MPX | 36 min |
| May 28, 4:10 PM CDT | Special Weather Statement | MPX | 35 min |
| May 29, 1:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| May 29, 1:43 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 29, 3:24 PM CDT | Special Weather Statement | MPX | 96 min |
| May 29, 3:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 29, 6:27 PM CDT | Special Weather Statement | MPX | 33 min |
| May 31, 1:00 AM CDT | Dense Fog Advisory | MPX | 8 hr |
| Jun 6, 4:34 AM CDT | Severe Thunderstorm Warning | MPX | 41 min |
| Jun 9, 10:42 AM CDT | Special Weather Statement | MPX | 48 min |
| Jun 9, 10:54 AM CDT | Flash Flood Watch | MPX | 8 hr |
| Jun 15, 11:18 AM CDT | Heat Advisory | MPX | 56 hr |
| Jun 17, 3:52 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 21, 10:09 AM CDT | River Flood Warning | MPX | 8 days |
| Jun 24, 10:45 AM CDT | Special Weather Statement | MPX | 45 min |
| Jun 26, 2:12 PM CDT | Areal Flood Warning | MPX | 4 days |
| Jun 28, 2:24 AM CDT | Excessive Heat Watch | MPX | 20 hr |
| Jun 28, 2:46 PM CDT | Excessive Heat Warning | MPX | 31 hr |
| Jul 3, 3:25 AM CDT | Excessive Heat Watch | MPX | 24 hr |
| Jul 3, 7:47 AM CDT | Flash Flood Warning | MPX | 3 hr |
| Jul 4, 3:35 AM CDT | Heat Advisory | MPX | 11 hr |
| Jul 5, 8:07 PM CDT | River Flood Warning | MPX | 3 days |
| Jul 10, 4:02 AM CDT | Excessive Heat Watch | MPX | 11 hr |
| Jul 10, 3:03 PM CDT | Heat Advisory | MPX | 52 hr |
| Jul 12, 2:42 PM CDT | Flash Flood Watch | MPX | 16 hr |
| Jul 12, 4:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 12, 5:04 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 12, 7:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 14, 3:04 AM CDT | Dense Fog Advisory | MPX | 5 hr |
| Jul 19, 1:27 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jul 19, 6:24 PM CDT | Special Weather Statement | MPX | 66 min |
| Jul 25, 3:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 25, 4:05 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 25, 6:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Aug 6, 7:53 PM CDT | Special Weather Statement | MPX | 52 min |
| Aug 24, 3:07 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 25, 2:54 AM CDT | Dense Fog Advisory | MPX | 7 hr |
| Aug 27, 11:49 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 27, 2:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Aug 27, 2:57 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 27, 3:52 PM CDT | Severe Thunderstorm Warning | MPX | 53 min |
| Aug 27, 4:14 PM CDT | Severe Thunderstorm Warning | MPX | 61 min |
| Sep 4, 3:15 AM CDT | Flash Flood Watch | MPX | 25 hr |
| Sep 17, 12:54 PM CDT | Special Weather Statement | MPX | 51 min |
| Sep 17, 4:03 PM CDT | Severe Thunderstorm Warning | MPX | 27 min |
| Sep 18, 5:48 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 18, 7:31 AM CDT | Special Weather Statement | MPX | 29 min |
| Sep 19, 10:39 AM CDT | Flash Flood Watch | MPX | 17 hr |
| Sep 20, 12:13 PM CDT | Special Weather Statement | MPX | 32 min |
| Sep 20, 2:15 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 20, 3:33 PM CDT | Tornado Watch | SPC | 4 hr |
| Sep 20, 5:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 20, 5:51 PM CDT | Special Weather Statement | MPX | 24 min |
| Sep 28, 3:21 AM CDT | Frost Advisory | MPX | 30 hr |
| Oct 3, 12:12 PM CDT | Wind Advisory | MPX | 12 hr |
| Oct 7, 3:21 PM CDT | Flood Watch | MPX | 60 hr |
| Oct 11, 3:05 AM CDT | Freeze Warning | MPX | 30 hr |
| Oct 27, 2:06 PM CDT | Wind Advisory | MPX | 20 hr |
| Nov 16, 2:46 AM CST | Winter Weather Advisory | MPX | 26 hr |
| Nov 29, 4:19 AM CST | Winter Storm Watch | MPX | 34 hr |
| Nov 30, 2:24 PM CST | Winter Weather Advisory | MPX | 46 hr |
| Dec 12, 7:36 AM CST | Special Weather Statement | MPX | 114 min |
| Dec 12, 3:08 PM CST | Dense Fog Advisory | MPX | 17 hr |
| Dec 13, 6:40 PM CST | Dense Fog Advisory | MPX | 15 hr |
| Dec 27, 2:07 PM CST | Winter Weather Advisory | MPX | 22 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 archive20172019
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.