Alert archive / Minnesota / Lake County
Weather alerts in Lake County, Minnesota, 2010
114 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lake County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 114
- Warnings
- 23
- Watches
- 8
- Advisories
- 47
- Busiest month
- May20 alerts
- Busiest day
- May 24, 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.
Lake County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 1 | 88% | 0 | ||
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Duluth, MN: tornado warnings | 34 | 9 | 74% | 14 | 93% | 19 min |
| NWS Duluth, MN: severe thunderstorm warnings | 155 | 54 | 65% | 168 | 80% | 27 min |
| NWS Duluth, MN: flash flood warnings | 12 | 4 | 67% | 9 | 56% | 56 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, 3:06 AM CST | Wind Chill Advisory | DLH | 33 hr |
| Jan 1, 9:11 PM CST | Wind Chill Warning | DLH | 15 hr |
| Jan 2, 8:14 PM CST | Wind Chill Advisory | DLH | 14 hr |
| Jan 3, 3:51 PM CST | Wind Chill Advisory | DLH | 18 hr |
| Jan 4, 3:41 PM CST | Wind Chill Advisory | DLH | 17 hr |
| Jan 7, 3:05 PM CST | Wind Chill Advisory | DLH | 19 hr |
| Jan 21, 6:15 PM CST | Winter Weather Advisory | DLH | 9 hr |
| Jan 22, 3:40 AM CST | Winter Storm Watch | DLH | 25 hr |
| Jan 22, 3:01 PM CST | Winter Weather Advisory | DLH | 4 days |
| Jan 23, 4:18 AM CST | Winter Storm Warning | DLH | 3 days |
| Jan 27, 3:13 PM CST | Wind Chill Advisory | DLH | 20 hr |
| Feb 6, 3:34 PM CST | Lake Effect Snow Warning | DLH | 71 hr |
| Feb 14, 7:31 PM CST | Winter Weather Advisory | DLH | 18 hr |
| Mar 11, 3:08 AM CST | Dense Fog Advisory | DLH | 23 hr |
| Mar 12, 11:07 PM CST | Dense Fog Advisory | DLH | 11 hr |
| Mar 13, 12:14 PM CST | Dense Fog Advisory | DLH | 22 hr |
| Apr 15, 2:30 AM CDT | Dense Fog Advisory | DLH | 8 hr |
| Apr 16, 4:33 AM CDT | Red Flag Warning | DLH | 15 hr |
| Apr 30, 7:17 AM CDT | Special Weather Statement | DLH | 28 min |
| Apr 30, 11:12 PM CDT | Dense Fog Advisory | DLH | 3 hr |
| May 7, 7:00 PM CDT | Winter Weather Advisory | DLH | 15 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, 5:40 PM CDT | Special Weather Statement | DLH | 20 min |
| May 23, 5:56 PM CDT | Mesoscale Discussion | SPC | 64 min |
| May 23, 6:26 PM CDT | Severe Thunderstorm Warning | DLH | 49 min |
| May 23, 6:55 PM CDT | Severe Thunderstorm Warning | DLH | 12 min |
| May 23, 6:59 PM CDT | Severe Thunderstorm Warning | DLH | 46 min |
| May 23, 7:57 PM CDT | Severe Thunderstorm Warning | DLH | 48 min |
| May 23, 9:11 PM CDT | Mesoscale Discussion | SPC | 64 min |
| May 23, 9:47 PM CDT | Special Weather Statement | DLH | 13 min |
| May 23, 9:58 PM CDT | Severe Thunderstorm Warning | DLH | 32 min |
| May 23, 10:45 PM CDT | Areal Flood Advisory | DLH | 4 hr |
| May 23, 11:35 PM CDT | Flash Flood Warning | DLH | 5 hr |
| May 23, 11:48 PM CDT | Special Weather Statement | DLH | 12 min |
| May 24, 5:40 AM CDT | Severe Thunderstorm Warning | DLH | 35 min |
| May 24, 7:48 PM CDT | Dense Fog Advisory | DLH | 16 hr |
| May 25, 4:42 PM CDT | Severe Thunderstorm Warning | DLH | 33 min |
| May 25, 5:21 PM CDT | Special Weather Statement | DLH | 39 min |
| Jun 22, 3:55 AM CDT | Dense Fog Advisory | DLH | 6 hr |
| Jun 23, 1:24 PM CDT | Special Weather Statement | DLH | 36 min |
| Jun 24, 5:55 PM CDT | Special Weather Statement | DLH | 50 min |
| Jun 24, 6:21 PM CDT | Special Weather Statement | DLH | 54 min |
| Jun 27, 8:06 AM CDT | Special Weather Statement | DLH | 54 min |
| Jun 27, 3:42 PM CDT | Special Weather Statement | DLH | 63 min |
| Jun 27, 7:32 PM CDT | Special Weather Statement | DLH | 28 min |
| Jun 27, 9:28 PM CDT | Special Weather Statement | DLH | 32 min |
| Jun 27, 11:22 PM CDT | Special Weather Statement | DLH | 23 min |
| Jun 27, 11:50 PM CDT | Special Weather Statement | DLH | 25 min |
| Jul 4, 1:33 AM CDT | Areal Flood Advisory | DLH | 6 hr |
| Jul 4, 5:01 AM CDT | Flash Flood Warning | DLH | 3 hr |
| Jul 10, 10:32 PM CDT | Special Weather Statement | DLH | 43 min |
| Jul 10, 11:23 PM CDT | Special Weather Statement | DLH | 52 min |
| Jul 11, 7:27 AM CDT | Special Weather Statement | DLH | 33 min |
| Jul 14, 9:27 AM CDT | Severe Thunderstorm Warning | DLH | 48 min |
| Jul 14, 10:18 AM CDT | Special Weather Statement | DLH | 12 min |
| Jul 14, 12:42 PM CDT | Special Weather Statement | DLH | 18 min |
| Jul 14, 3:53 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 20, 11:08 PM CDT | Special Weather Statement | DLH | 52 min |
| Jul 27, 5:14 AM CDT | Special Weather Statement | DLH | 61 min |
| Jul 27, 6:22 AM CDT | Special Weather Statement | DLH | 53 min |
| Jul 30, 8:39 PM CDT | Special Weather Statement | DLH | 36 min |
| Aug 1, 4:29 AM CDT | Special Weather Statement | DLH | 46 min |
| Aug 1, 9:40 AM CDT | Special Weather Statement | DLH | 65 min |
| Aug 1, 4:09 PM CDT | Special Weather Statement | DLH | 51 min |
| Aug 1, 4:38 PM CDT | Special Weather Statement | DLH | 37 min |
| Aug 1, 10:04 PM CDT | Areal Flood Advisory | DLH | 7 hr |
| Aug 3, 1:18 AM CDT | Dense Fog Advisory | DLH | 6 hr |
| Aug 3, 7:06 AM CDT | Dense Fog Advisory | DLH | 55 min |
| Aug 4, 6:04 PM CDT | Special Weather Statement | DLH | 41 min |
| Aug 9, 4:06 AM CDT | Dense Fog Advisory | DLH | 6 hr |
| Aug 18, 3:48 AM CDT | Special Weather Statement | DLH | 12 min |
| Aug 19, 3:12 PM CDT | Flood Watch | DLH | 20 hr |
| Aug 20, 10:49 PM CDT | Dense Fog Advisory | DLH | 11 hr |
| Aug 21, 9:21 PM CDT | Dense Fog Advisory | DLH | 12 hr |
| Sep 4, 12:06 PM CDT | Frost Advisory | DLH | 19 hr |
| Sep 9, 12:35 AM CDT | Frost Advisory | DLH | 7 hr |
| Sep 14, 3:29 PM CDT | Frost Advisory | DLH | 16 hr |
| Sep 17, 3:44 PM CDT | Frost Advisory | DLH | 12 hr |
| Sep 17, 3:44 PM CDT | Freeze Warning | DLH | 12 hr |
| Sep 18, 3:33 PM CDT | Freeze Warning | DLH | 12 hr |
| Sep 20, 7:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 25, 3:33 AM CDT | Frost Advisory | DLH | 28 hr |
| Sep 25, 3:33 AM CDT | Freeze Warning | DLH | 28 hr |
| Sep 29, 10:38 PM CDT | Special Weather Statement | DLH | 37 min |
| Oct 1, 3:31 PM CDT | Frost Advisory | DLH | 16 hr |
| Oct 1, 3:31 PM CDT | Freeze Warning | DLH | 16 hr |
| Oct 2, 2:41 PM CDT | Freeze Warning | DLH | 17 hr |
| Oct 25, 2:14 PM CDT | Wind Advisory | DLH | 49 hr |
| Oct 26, 11:46 AM CDT | Areal Flood Advisory | DLH | 4 hr |
| Oct 26, 3:01 PM CDT | Areal Flood Advisory | DLH | 6 hr |
| Oct 26, 3:44 PM CDT | Winter Weather Advisory | DLH | 20 hr |
| Oct 26, 8:11 PM CDT | Areal Flood Advisory | DLH | 8 hr |
| Nov 11, 12:14 AM CST | Special Weather Statement | DLH | 31 min |
| Nov 11, 3:30 PM CST | Winter Storm Watch | DLH | 24 hr |
| Nov 12, 3:29 PM CST | Winter Storm Warning | DLH | 48 hr |
| Nov 18, 3:39 PM CST | Winter Weather Advisory | DLH | 20 hr |
| Nov 20, 2:55 PM CST | Winter Weather Advisory | DLH | 27 hr |
| Nov 22, 4:09 AM CST | Winter Weather Advisory | DLH | 19 hr |
| Nov 22, 9:51 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Nov 23, 3:53 AM CST | Winter Storm Watch | DLH | 28 hr |
| Nov 24, 3:51 AM CST | Winter Storm Warning | DLH | 30 hr |
| Nov 27, 12:42 AM CST | Wind Advisory | DLH | 2 hr |
| Nov 28, 3:27 PM CST | Winter Storm Watch | DLH | 13 hr |
| Nov 29, 4:03 AM CST | Winter Storm Warning | DLH | 55 hr |
| Nov 29, 4:03 AM CST | Winter Weather Advisory | DLH | 55 hr |
| Dec 8, 3:51 PM CST | Winter Weather Advisory | DLH | 29 hr |
| Dec 10, 5:24 AM CST | Winter Weather Advisory | DLH | 34 hr |
| Dec 11, 3:20 PM CST | Wind Chill Advisory | DLH | 20 hr |
| Dec 12, 3:35 PM CST | Wind Chill Advisory | DLH | 20 hr |
| Dec 19, 3:53 PM CST | Winter Storm Warning | DLH | 56 hr |
| Dec 20, 4:25 AM CST | Winter Weather Advisory | DLH | 43 hr |
| Dec 28, 9:46 PM CST | Winter Storm Watch | DLH | 18 hr |
| Dec 29, 3:53 PM CST | Winter Weather Advisory | DLH | 62 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 | 8 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 31 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 6 |
| Winter | |
| Lake Effect Snow Warning | 1 |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 13 |
| Cold | |
| Freeze Warning | 5 |
| Wind Chill Warning | 1 |
| Frost Advisory | 6 |
| Wind Chill Advisory | 8 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
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.