Alert archive / Minnesota / Anoka County
Weather alerts in Anoka County, Minnesota, 2016
85 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Anoka County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 85
- Warnings
- 19
- Watches
- 11
- Advisories
- 22
- Busiest month
- July21 alerts
- Busiest day
- August 10, 20167 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Anoka County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 6 | 4 | 33% | 7 | 29% | 12 min |
| Flash flood warnings | 6 | 2 | 67% | 4 | 100% | 90 min |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Twin Cities, MN: tornado warnings | 42 | 10 | 76% | 26 | 54% | 18 min |
| NWS Twin Cities, MN: severe thunderstorm warnings | 248 | 119 | 52% | 392 | 67% | 23 min |
| NWS Twin Cities, MN: flash flood warnings | 34 | 10 | 71% | 25 | 84% | 91 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 9, 3:08 AM CST | Wind Chill Advisory | MPX | 33 hr |
| Jan 11, 3:26 AM CST | Wind Chill Advisory | MPX | 33 hr |
| Jan 16, 3:19 AM CST | Wind Chill Warning | MPX | 33 hr |
| Jan 16, 11:58 AM CST | Wind Chill Advisory | MPX | 48 hr |
| Feb 1, 11:11 AM CST | Winter Storm Warning | MPX | 43 hr |
| Feb 1, 11:11 AM CST | Winter Weather Advisory | MPX | 49 hr |
| Feb 2, 11:35 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 6, 3:09 PM CST | Winter Weather Advisory | MPX | 51 hr |
| Apr 21, 4:21 PM CDT | Special Weather Statement | MPX | 24 min |
| May 6, 3:33 AM CDT | Red Flag Warning | MPX | 15 hr |
| May 6, 3:19 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 11, 10:47 PM CDT | Dense Fog Advisory | MPX | 5 hr |
| May 13, 2:37 PM CDT | Frost Advisory | MPX | 18 hr |
| May 14, 3:12 AM CDT | Frost Advisory | MPX | 29 hr |
| May 23, 1:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 9, 3:18 PM CDT | Heat Advisory | MPX | 30 hr |
| Jun 10, 12:02 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 14, 5:28 PM CDT | Special Weather Statement | MPX | 3 hr |
| Jun 19, 7:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 19, 10:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 19, 11:43 PM CDT | Special Weather Statement | MPX | 32 min |
| Jun 22, 5:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 2:59 AM CDT | Heat Advisory | MPX | 15 hr |
| Jun 25, 12:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 25, 3:41 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 5:53 PM CDT | Severe Thunderstorm Warning | MPX | 25 min |
| Jun 25, 6:04 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jul 5, 1:19 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jul 5, 4:10 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 5, 5:01 PM CDT | Severe Thunderstorm Warning | MPX | 59 min |
| Jul 5, 5:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 5, 7:16 PM CDT | Flash Flood Warning | MPX | 4 hr |
| Jul 5, 7:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jul 11, 3:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 11, 3:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 11, 5:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jul 11, 5:31 PM CDT | Tornado Watch | SPC | 4 hr |
| Jul 11, 9:09 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Jul 11, 11:49 PM CDT | Flash Flood Warning | MPX | 3 hr |
| Jul 18, 3:42 AM CDT | Excessive Heat Watch | MPX | 56 hr |
| Jul 19, 3:46 AM CDT | Flash Flood Watch | MPX | 24 hr |
| Jul 19, 4:00 AM CDT | Excessive Heat Warning | MPX | 4 days |
| Jul 21, 3:16 AM CDT | Special Weather Statement | MPX | 44 min |
| Jul 21, 3:39 AM CDT | Special Weather Statement | MPX | 66 min |
| Jul 23, 2:17 PM CDT | Special Weather Statement | MPX | 43 min |
| Jul 23, 3:27 PM CDT | Flash Flood Warning | MPX | 3 hr |
| Jul 27, 11:17 AM CDT | Mesoscale Discussion | SPC | 118 min |
| Jul 27, 1:50 PM CDT | Special Weather Statement | MPX | 70 min |
| Aug 4, 8:18 AM CDT | Special Weather Statement | MPX | 27 min |
| Aug 10, 3:30 AM CDT | Mesoscale Discussion | SPC | 60 min |
| Aug 10, 11:00 AM CDT | Flash Flood Watch | MPX | 32 hr |
| Aug 10, 4:04 PM CDT | Mesoscale Discussion | SPC | 26 min |
| Aug 10, 4:20 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 10, 6:25 PM CDT | Severe Thunderstorm Warning | MPX | 35 min |
| Aug 10, 6:54 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Aug 10, 6:58 PM CDT | Special Weather Statement | MPX | 47 min |
| Aug 10, 8:08 PM CDT | Flash Flood Warning | MPX | 3 hr |
| Aug 16, 3:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 16, 5:05 PM CDT | Severe Thunderstorm Warning | MPX | 25 min |
| Aug 19, 2:45 AM CDT | Severe Thunderstorm Warning | MPX | 60 min |
| Aug 19, 3:15 AM CDT | Severe Thunderstorm Warning | MPX | 45 min |
| Aug 27, 10:34 PM CDT | Dense Fog Advisory | MPX | 10 hr |
| Sep 5, 3:06 PM CDT | Flood Watch | MPX | 43 hr |
| Sep 20, 12:21 PM CDT | Flash Flood Watch | MPX | 40 hr |
| Sep 21, 2:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Sep 21, 6:50 PM CDT | Flash Flood Warning | MPX | 9 hr |
| Sep 21, 11:11 PM CDT | Flash Flood Warning | MPX | 5 hr |
| Oct 7, 3:58 AM CDT | Frost Advisory | MPX | 29 hr |
| Oct 8, 2:23 PM CDT | Frost Advisory | MPX | 18 hr |
| Oct 12, 2:53 AM CDT | Freeze Warning | MPX | 30 hr |
| Nov 15, 3:04 AM CST | Dense Fog Advisory | MPX | 5 hr |
| Nov 17, 3:44 AM CST | Winter Weather Advisory | MPX | 41 hr |
| Nov 18, 8:33 AM CST | Special Weather Statement | MPX | 42 min |
| Nov 21, 3:44 PM CST | Winter Weather Advisory | MPX | 47 hr |
| Nov 26, 2:16 PM CST | Dense Fog Advisory | MPX | 28 hr |
| Nov 28, 9:11 AM CST | Special Weather Statement | MPX | 49 min |
| Nov 28, 10:45 AM CST | Special Weather Statement | MPX | 60 min |
| Dec 9, 11:17 AM CST | Winter Weather Advisory | MPX | 52 hr |
| Dec 14, 4:05 AM CST | Wind Chill Advisory | MPX | 29 hr |
| Dec 14, 4:05 AM CST | Winter Storm Watch | MPX | 35 hr |
| Dec 15, 3:37 AM CST | Winter Storm Warning | MPX | 52 hr |
| Dec 16, 4:04 AM CST | Wind Chill Warning | MPX | 56 hr |
| Dec 18, 11:23 AM CST | Wind Chill Advisory | MPX | 13 hr |
| Dec 24, 3:43 AM CST | Freezing Rain Advisory | MPX | 38 hr |
| Dec 25, 3:03 PM CST | Wind Advisory | MPX | 27 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 | 6 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 21 |
| Special Weather Statement | 12 |
| Flooding | |
| Flash Flood Warning | 6 |
| Flash Flood Watch | 3 |
| Flood Watch | 1 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 2 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 5 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
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.