Alert archive / Minnesota / Chisago County
Weather alerts in Chisago County, Minnesota, 2010
117 weather alerts in 2010, 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 2010. Tap one for its archive.
- Alerts
- 117
- Warnings
- 25
- Watches
- 22
- Advisories
- 28
- Busiest month
- August28 alerts
- Busiest day
- July 14, 20108 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 4 tornado warnings covering Chisago County in 2010 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 6 minutes after it went out.
Chisago County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 1 | 75% | 1 | 100% | 6 min |
| Severe thunderstorm warnings | 14 | 9 | 36% | 7 | 57% | 27 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Twin Cities, MN: tornado warnings | 97 | 33 | 66% | 103 | 68% | 19 min |
| NWS Twin Cities, MN: severe thunderstorm warnings | 269 | 149 | 45% | 542 | 68% | 26 min |
| NWS Twin Cities, MN: flash flood warnings | 25 | 15 | 40% | 86 | 60% | 71 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, 2:22 PM CST | Wind Chill Advisory | MPX | 19 hr |
| Jan 7, 1:57 PM CST | Wind Chill Advisory | MPX | 34 hr |
| Jan 18, 3:44 PM CST | Dense Fog Advisory | MPX | 23 hr |
| Jan 21, 6:25 PM CST | Winter Weather Advisory | MPX | 6 hr |
| Jan 22, 11:50 AM CST | Winter Weather Advisory | MPX | 28 hr |
| Feb 4, 2:10 PM CST | Winter Weather Advisory | MPX | 25 hr |
| Feb 7, 3:15 PM CST | Winter Weather Advisory | MPX | 51 hr |
| Feb 12, 3:55 PM CST | Dense Fog Advisory | MPX | 20 hr |
| Feb 13, 9:50 AM CST | Winter Weather Advisory | MPX | 50 hr |
| Mar 9, 4:10 PM CST | Dense Fog Advisory | MPX | 41 hr |
| Mar 11, 2:41 PM CST | Dense Fog Advisory | MPX | 21 hr |
| Apr 16, 4:16 AM CDT | Red Flag Warning | MPX | 16 hr |
| May 4, 2:49 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 7, 7:41 PM CDT | Winter Weather Advisory | MPX | 8 hr |
| May 8, 3:48 AM CDT | Freeze Warning | MPX | 29 hr |
| May 23, 2:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 23, 3:06 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 23, 5:56 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Jun 15, 1:23 PM CDT | Special Weather Statement | MPX | 112 min |
| Jun 15, 2:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 15, 4:14 PM CDT | Special Weather Statement | MPX | 31 min |
| Jun 17, 1:54 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 17, 7:12 PM CDT | Special Weather Statement | MPX | 2 hr |
| Jun 17, 7:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 17, 8:02 PM CDT | Severe Thunderstorm Warning | MPX | 43 min |
| Jun 17, 8:34 PM CDT | Tornado Warning | MPX | 26 min |
| Jun 22, 4:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 22, 10:03 PM CDT | Special Weather Statement | DLH | 12 min |
| Jun 22, 10:49 PM CDT | Special Weather Statement | DLH | 16 min |
| Jun 22, 11:04 PM CDT | Special Weather Statement | DLH | 26 min |
| Jun 23, 1:49 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 23, 2:36 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 23, 2:58 AM CDT | Special Weather Statement | MPX | 77 min |
| Jun 25, 5:00 PM CDT | Severe Thunderstorm Warning | MPX | 60 min |
| Jun 25, 5:51 PM CDT | Severe Thunderstorm Warning | MPX | 54 min |
| Jul 10, 11:41 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 14, 8:26 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Jul 14, 9:00 AM CDT | Tornado Watch | SPC | 9 hr |
| Jul 14, 9:49 AM CDT | Special Weather Statement | MPX | 41 min |
| Jul 14, 12:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 14, 1:13 PM CDT | Special Weather Statement | MPX | 47 min |
| Jul 14, 1:37 PM CDT | Areal Flood Advisory | MPX | 3 hr |
| Jul 14, 1:43 PM CDT | Severe Thunderstorm Warning | MPX | 47 min |
| Jul 14, 3:53 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 17, 11:58 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 17, 12:28 PM CDT | Tornado Watch | SPC | 11 hr |
| Jul 17, 5:56 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 17, 7:38 PM CDT | Severe Thunderstorm Warning | MPX | 52 min |
| Jul 17, 8:00 PM CDT | Severe Thunderstorm Warning | MPX | 60 min |
| Jul 17, 8:34 PM CDT | Tornado Warning | MPX | 26 min |
| Jul 17, 8:51 PM CDT | Tornado Warning | MPX | 24 min |
| Jul 20, 4:54 PM CDT | Special Weather Statement | MPX | 66 min |
| Jul 20, 5:05 PM CDT | Special Weather Statement | DLH | 25 min |
| Jul 20, 5:15 PM CDT | Severe Thunderstorm Warning | MPX | 60 min |
| Jul 27, 7:01 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Jul 27, 1:43 PM CDT | Mesoscale Discussion | SPC | 32 min |
| Jul 27, 3:29 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 27, 6:17 PM CDT | Severe Thunderstorm Warning | MPX | 43 min |
| Jul 27, 6:51 PM CDT | Special Weather Statement | MPX | 54 min |
| Jul 27, 7:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Aug 3, 2:03 AM CDT | Dense Fog Advisory | MPX | 7 hr |
| Aug 7, 1:01 PM CDT | Flash Flood Watch | MPX | 14 hr |
| Aug 7, 5:27 PM CDT | Tornado Watch | SPC | 8 hr |
| Aug 7, 8:57 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Aug 7, 10:39 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 10:55 PM CDT | Severe Thunderstorm Warning | MPX | 65 min |
| Aug 7, 11:59 PM CDT | Tornado Watch | SPC | 4 hr |
| Aug 8, 12:45 AM CDT | Special Weather Statement | MPX | 90 min |
| Aug 8, 2:25 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Aug 8, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 10, 4:13 PM CDT | Areal Flood Advisory | MPX | 3 hr |
| Aug 10, 6:03 PM CDT | Severe Thunderstorm Warning | MPX | 42 min |
| Aug 10, 6:55 PM CDT | Severe Thunderstorm Warning | MPX | 65 min |
| Aug 12, 4:37 PM CDT | Flash Flood Watch | MPX | 29 hr |
| Aug 12, 5:57 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Aug 12, 6:41 PM CDT | Tornado Watch | SPC | 4 hr |
| Aug 12, 8:29 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Aug 12, 8:44 PM CDT | Severe Thunderstorm Warning | MPX | 46 min |
| Aug 13, 1:19 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 13, 5:27 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 13, 2:13 PM CDT | Tornado Warning | MPX | 17 min |
| Aug 13, 2:39 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 13, 3:19 PM CDT | Severe Thunderstorm Warning | MPX | 56 min |
| Aug 13, 7:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Aug 18, 10:01 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 18, 2:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Aug 20, 2:32 AM CDT | Severe Thunderstorm Warning | MPX | 58 min |
| Aug 21, 8:48 PM CDT | Dense Fog Advisory | MPX | 12 hr |
| Sep 2, 2:31 AM CDT | Special Weather Statement | MPX | 44 min |
| Sep 20, 7:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 21, 2:04 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Sep 22, 4:00 AM CDT | Flood Watch | MPX | 46 hr |
| Sep 25, 3:41 PM CDT | Frost Advisory | MPX | 16 hr |
| Oct 2, 3:14 AM CDT | Frost Advisory | MPX | 30 hr |
| Oct 2, 3:15 PM CDT | Freeze Warning | MPX | 18 hr |
| Oct 24, 3:57 PM CDT | High Wind Watch | MPX | 24 hr |
| Oct 25, 3:58 PM CDT | High Wind Warning | MPX | 47 hr |
| Nov 11, 3:42 PM CST | Winter Storm Watch | MPX | 24 hr |
| Nov 12, 3:40 PM CST | Winter Storm Warning | MPX | 29 hr |
| Nov 12, 3:40 PM CST | Winter Weather Advisory | MPX | 36 hr |
| Nov 13, 2:28 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Nov 13, 10:01 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Nov 20, 3:04 PM CST | Freezing Rain Advisory | MPX | 24 hr |
| Nov 23, 3:23 PM CST | Winter Weather Advisory | MPX | 32 hr |
| Nov 29, 4:46 AM CST | Winter Weather Advisory | MPX | 40 hr |
| Dec 2, 3:17 PM CST | Winter Weather Advisory | MPX | 39 hr |
| Dec 9, 3:00 PM CST | Winter Storm Watch | MPX | 14 hr |
| Dec 10, 5:02 AM CST | Winter Storm Warning | MPX | 49 hr |
| Dec 10, 6:19 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Dec 11, 1:47 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 11, 4:13 PM CST | Wind Chill Advisory | MPX | 20 hr |
| Dec 12, 3:59 PM CST | Wind Chill Advisory | MPX | 17 hr |
| Dec 19, 3:28 AM CST | Winter Storm Watch | MPX | 11 hr |
| Dec 19, 2:12 PM CST | Winter Storm Warning | MPX | 38 hr |
| Dec 21, 3:49 AM CST | Winter Weather Advisory | MPX | 12 hr |
| Dec 29, 11:33 AM CST | Dense Fog Advisory | MPX | 15 hr |
| Dec 30, 2:53 PM CST | Winter Weather Advisory | MPX | 45 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 | 14 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 7 |
| Mesoscale Discussion | 28 |
| Special Weather Statement | 14 |
| Flooding | |
| Flash Flood Watch | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 3 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 12 |
| Cold | |
| Freeze Warning | 2 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.