Alert archive / Wisconsin / Bayfield County
Weather alerts in Bayfield County, Wisconsin, 2010
110 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Bayfield County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 110
- Warnings
- 33
- Watches
- 18
- Advisories
- 32
- Busiest month
- July20 alerts
- Busiest day
- June 25, 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 3 tornado warnings covering Bayfield County in 2010 had a tornado report inside them.
Bayfield County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 0 | ||
| Severe thunderstorm warnings | 19 | 12 | 37% | 20 | 95% | 31 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 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 6, 6:07 AM CST | Lake Effect Snow Advisory | DLH | 28 hr |
| Jan 7, 10:07 AM CST | Lake Effect Snow Warning | DLH | 18 hr |
| Jan 8, 3:48 AM CST | Lake Effect Snow Advisory | DLH | 8 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 |
| Jan 27, 11:55 PM CST | Lake Effect Snow Warning | DLH | 15 hr |
| Feb 6, 3:34 PM CST | Lake Effect Snow Warning | DLH | 71 hr |
| Feb 6, 9:29 PM CST | Winter Storm Watch | DLH | 21 hr |
| Feb 13, 3:19 PM CST | Lake Effect Snow Advisory | DLH | 28 hr |
| Feb 14, 7:31 PM CST | Winter Storm Warning | DLH | 18 hr |
| Feb 14, 7:31 PM CST | Winter Weather Advisory | DLH | 18 hr |
| Feb 22, 3:37 PM CST | Lake Effect Snow Advisory | DLH | 38 hr |
| Mar 4, 6:33 AM CST | Dense Fog Advisory | DLH | 3 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 16, 4:16 PM CDT | Fire Weather Watch | DLH | 14 hr |
| Apr 17, 5:58 AM CDT | Red Flag Warning | DLH | 13 hr |
| Apr 30, 12:23 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 1, 1:25 AM CDT | Special Weather Statement | DLH | 35 min |
| 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 25, 2:39 PM CDT | Special Weather Statement | DLH | 36 min |
| May 25, 3:19 PM CDT | Special Weather Statement | DLH | 26 min |
| May 25, 3:26 PM CDT | Severe Thunderstorm Warning | DLH | 34 min |
| Jun 17, 4:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jun 17, 5:50 PM CDT | Tornado Watch | SPC | 7 hr |
| Jun 17, 7:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 17, 8:55 PM CDT | Special Weather Statement | DLH | 50 min |
| Jun 22, 3:55 AM CDT | Dense Fog Advisory | DLH | 6 hr |
| Jun 22, 6:48 PM CDT | Special Weather Statement | DLH | 12 min |
| Jun 22, 6:59 PM CDT | Severe Thunderstorm Warning | DLH | 61 min |
| Jun 22, 7:45 PM CDT | Severe Thunderstorm Warning | DLH | 60 min |
| Jun 22, 8:09 PM CDT | Tornado Warning | DLH | 51 min |
| Jun 23, 2:36 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 24, 7:01 PM CDT | Severe Thunderstorm Warning | DLH | 44 min |
| Jun 24, 7:45 PM CDT | Severe Thunderstorm Warning | DLH | 60 min |
| Jun 24, 8:44 PM CDT | Severe Thunderstorm Warning | DLH | 61 min |
| Jun 24, 8:46 PM CDT | Severe Thunderstorm Warning | DLH | 59 min |
| Jun 24, 9:19 PM CDT | Areal Flood Advisory | DLH | 5 hr |
| Jun 24, 9:45 PM CDT | Severe Thunderstorm Warning | DLH | 60 min |
| Jun 25, 4:12 AM CDT | Flash Flood Watch | DLH | 23 hr |
| Jun 25, 2:50 PM CDT | Special Weather Statement | DLH | 25 min |
| Jul 5, 2:18 PM CDT | Special Weather Statement | DLH | 117 min |
| Jul 5, 3:18 PM CDT | Special Weather Statement | DLH | 57 min |
| Jul 5, 4:20 PM CDT | Special Weather Statement | DLH | 25 min |
| Jul 10, 4:07 PM CDT | Severe Thunderstorm Warning | DLH | 53 min |
| Jul 10, 11:19 PM CDT | Special Weather Statement | DLH | 26 min |
| Jul 10, 11:46 PM CDT | Special Weather Statement | DLH | 14 min |
| Jul 11, 1:09 PM CDT | Special Weather Statement | DLH | 36 min |
| Jul 14, 9:00 AM CDT | Tornado Watch | SPC | 9 hr |
| Jul 14, 10:10 AM CDT | Severe Thunderstorm Warning | DLH | 65 min |
| Jul 14, 11:08 AM CDT | Severe Thunderstorm Warning | DLH | 67 min |
| Jul 14, 12:43 PM CDT | Special Weather Statement | DLH | 17 min |
| Jul 14, 2:11 PM CDT | Special Weather Statement | DLH | 19 min |
| Jul 14, 6:16 PM CDT | Severe Thunderstorm Warning | DLH | 29 min |
| Jul 14, 7:21 PM CDT | Special Weather Statement | DLH | 39 min |
| Jul 27, 3:29 PM CDT | Tornado Watch | SPC | 7 hr |
| Jul 27, 4:50 PM CDT | Special Weather Statement | DLH | 40 min |
| Jul 27, 4:53 PM CDT | Severe Thunderstorm Warning | DLH | 52 min |
| Jul 27, 5:42 PM CDT | Severe Thunderstorm Warning | DLH | 63 min |
| Jul 27, 5:49 PM CDT | Tornado Warning | DLH | 41 min |
| Jul 27, 7:45 PM CDT | Areal Flood Advisory | DLH | 3 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 7, 8:17 PM CDT | Special Weather Statement | DLH | 43 min |
| Aug 7, 9:16 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 7, 10:04 PM CDT | Tornado Warning | DLH | 26 min |
| Aug 7, 10:40 PM CDT | Severe Thunderstorm Warning | DLH | 50 min |
| Aug 9, 4:06 AM CDT | Dense Fog Advisory | DLH | 6 hr |
| Aug 12, 9:48 PM CDT | Flood Watch | DLH | 25 hr |
| Aug 12, 9:58 PM CDT | Severe Thunderstorm Warning | DLH | 32 min |
| Aug 12, 10:30 PM CDT | Severe Thunderstorm Warning | DLH | 30 min |
| Aug 13, 2:39 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 13, 5:12 PM CDT | Special Weather Statement | DLH | 48 min |
| Aug 13, 5:33 PM CDT | Severe Thunderstorm Warning | DLH | 42 min |
| Aug 13, 6:17 PM CDT | Severe Thunderstorm Warning | DLH | 58 min |
| Aug 14, 2:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Aug 18, 10:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| 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 9, 12:35 AM CDT | Frost Advisory | DLH | 7 hr |
| Sep 18, 3:33 PM CDT | Frost Advisory | DLH | 12 hr |
| 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, 4:02 AM CDT | Flood Watch | DLH | 48 hr |
| Sep 25, 3:33 AM CDT | Freeze Warning | DLH | 28 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, 10:47 AM CDT | Special Weather Statement | DLH | 13 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 13, 11:43 AM CST | Special Weather Statement | DLH | 57 min |
| Nov 20, 2:55 PM CST | Freezing Rain Advisory | DLH | 20 hr |
| Nov 22, 4:09 AM CST | Winter Weather Advisory | DLH | 19 hr |
| Nov 23, 3:31 PM CST | Winter Weather Advisory | DLH | 42 hr |
| Nov 29, 4:03 AM CST | Winter Weather Advisory | DLH | 55 hr |
| Dec 9, 3:34 PM CST | Winter Storm Watch | DLH | 14 hr |
| Dec 10, 5:24 AM CST | Winter Storm Warning | DLH | 3 days |
| Dec 11, 6:42 PM CST | Special Weather Statement | DLH | 78 min |
| Dec 19, 3:53 PM CST | Winter Storm Warning | DLH | 56 hr |
| Dec 25, 6:30 AM CST | Lake Effect Snow Advisory | DLH | 15 hr |
| Dec 29, 3:53 PM CST | Winter Weather Advisory | DLH | 62 hr |
| Dec 29, 4:27 PM CST | Dense Fog Advisory | DLH | 11 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 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.