Alert archive / Minnesota / Chisago County
Weather alerts in Chisago County, Minnesota, 2026
73 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Chisago County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 73
- Warnings
- 22
- Watches
- 13
- Advisories
- 23
- Busiest month
- June20 alerts
- Busiest day
- June 19, 20268 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 Chisago County in 2026 had a tornado report inside them.
Chisago County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 7 | 7 | 0% | 11 | 91% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Twin Cities, MN: tornado warnings | 24 | 6 | 75% | 13 | 77% | 20 min |
| NWS Twin Cities, MN: severe thunderstorm warnings | 197 | 98 | 50% | 327 | 76% | 22 min |
| NWS Twin Cities, MN: flash flood warnings | 11 | 6 | 45% | 11 | 91% | 57 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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 4, 3:09 AM CST | Winter Weather Advisory | MPX | 15 hr |
| Jan 5, 4:03 AM CST | Winter Weather Advisory | MPX | 35 hr |
| Jan 5, 11:00 AM CST | Dense Fog Advisory | MPX | 28 hr |
| Jan 8, 12:16 AM CST | Dense Fog Advisory | MPX | 10 hr |
| Jan 17, 1:45 PM CST | Cold Weather Advisory | MPX | 46 hr |
| Jan 20, 12:57 PM CST | Extreme Cold Watch | MPX | 45 hr |
| Jan 20, 1:51 PM CST | Winter Weather Advisory | MPX | 30 hr |
| Jan 21, 12:02 PM CST | Extreme Cold Warning | MPX | 48 hr |
| Jan 22, 9:46 AM CST | Cold Weather Advisory | MPX | 47 hr |
| Jan 25, 2:19 AM CST | Cold Weather Advisory | MPX | 33 hr |
| Mar 3, 11:55 PM CST | Dense Fog Advisory | MPX | 12 hr |
| Mar 10, 3:44 AM CDT | Winter Weather Advisory | MPX | 30 hr |
| Mar 11, 1:18 PM CDT | Winter Storm Watch | MPX | 12 hr |
| Mar 11, 10:01 PM CDT | Wind Advisory | MPX | 33 hr |
| Mar 12, 2:20 PM CDT | Winter Storm Watch | MPX | 19 hr |
| Mar 13, 9:37 AM CDT | Winter Storm Warning | MPX | 28 hr |
| Mar 14, 2:36 AM CDT | Blizzard Warning | MPX | 52 hr |
| Mar 15, 3:07 PM CDT | Winter Storm Warning | MPX | 10 hr |
| Mar 26, 1:43 PM CDT | Fire Weather Watch | MPX | 22 hr |
| Mar 27, 11:13 AM CDT | Red Flag Warning | MPX | 34 hr |
| Mar 31, 2:50 PM CDT | Winter Weather Advisory | MPX | 48 hr |
| Apr 2, 3:55 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 2, 2:48 PM CDT | Winter Weather Advisory | MPX | 48 hr |
| Apr 14, 4:42 AM CDT | Dense Fog Advisory | MPX | 4 hr |
| Apr 15, 4:52 AM CDT | Dense Fog Advisory | MPX | 4 hr |
| Apr 17, 7:44 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 17, 9:23 AM CDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Apr 23, 1:46 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 23, 3:40 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Apr 29, 1:01 PM CDT | Freeze Warning | MPX | 19 hr |
| Apr 30, 1:46 PM CDT | Freeze Warning | MPX | 18 hr |
| May 1, 1:03 PM CDT | Freeze Warning | MPX | 19 hr |
| May 5, 12:53 PM CDT | Freeze Warning | MPX | 19 hr |
| May 7, 12:40 PM CDT | Frost Advisory | MPX | 19 hr |
| May 9, 12:59 PM CDT | Frost Advisory | MPX | 17 hr |
| May 10, 1:00 PM CDT | Freeze Warning | MPX | 19 hr |
| May 13, 3:20 AM CDT | Fire Weather Watch | MPX | 32 hr |
| May 14, 11:39 AM CDT | Red Flag Warning | MPX | 33 hr |
| May 19, 12:23 PM CDT | Frost Advisory | MPX | 20 hr |
| Jun 5, 12:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 5, 2:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 5, 3:25 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 1:31 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 10, 3:19 AM CDT | Severe Thunderstorm Warning | MPX | 41 min |
| Jun 10, 4:04 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 10, 5:43 PM CDT | Severe Thunderstorm Warning | MPX | 32 min |
| Jun 10, 5:47 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 15, 6:33 PM CDT | Severe Thunderstorm Warning | MPX | 38 min |
| Jun 19, 1:27 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 19, 2:01 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 19, 3:39 PM CDT | Severe Thunderstorm Warning | MPX | 51 min |
| Jun 19, 3:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 19, 4:37 PM CDT | Severe Thunderstorm Warning | MPX | 53 min |
| Jun 19, 4:45 PM CDT | Tornado Warning | MPX | 45 min |
| Jun 19, 5:30 PM CDT | Severe Thunderstorm Warning | MPX | 45 min |
| Jun 19, 5:49 PM CDT | Severe Thunderstorm Warning | MPX | 56 min |
| Jun 27, 12:13 PM CDT | Extreme Heat Watch | MPX | 13 hr |
| Jun 28, 12:44 AM CDT | Extreme Heat Warning | MPX | 47 hr |
| Jun 28, 12:32 PM CDT | Heat Advisory | MPX | 56 hr |
| Jul 2, 11:26 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 11, 2:02 PM CDT | Heat Advisory | MPX | 36 hr |
| Jul 12, 2:43 AM CDT | Extreme Heat Warning | MPX | 6 days |
| Jul 13, 12:00 PM CDT | Heat Advisory | MPX | 59 hr |
| Jul 17, 1:04 AM CDT | Heat Advisory | MPX | 20 hr |
| Jul 17, 7:02 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 12:59 PM CDT | Heat Advisory | MPX | 46 hr |
| Jul 24, 12:59 PM CDT | Extreme Heat Watch | MPX | 23 hr |
| Jul 24, 12:59 PM CDT | Extreme Heat Warning | MPX | 56 hr |
| Aug 9, 3:15 AM CDT | Special Weather Statement | MPX | 60 min |
| Aug 20, 5:31 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 25, 1:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 25, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 3, 11:55 PM CDT | Mesoscale Discussion | SPC | 2 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 archive2025
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.