Alert archive / Wisconsin / Bayfield County
Weather alerts in Bayfield County, Wisconsin, 2015
87 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 87
- Warnings
- 13
- Watches
- 8
- Advisories
- 35
- Busiest month
- June14 alerts
- Busiest day
- April 1, 20155 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Bayfield County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 1 | 75% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Duluth, MN: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS Duluth, MN: severe thunderstorm warnings | 119 | 40 | 66% | 110 | 74% | 19 min |
| NWS Duluth, MN: flash flood warnings | 4 | 0 | 100% | 1 | 0% |
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 2, 3:27 PM CST | Winter Weather Advisory | DLH | 47 hr |
| Jan 3, 3:33 PM CST | Wind Chill Watch | DLH | 12 hr |
| Jan 3, 3:33 PM CST | Wind Chill Warning | DLH | 44 hr |
| Jan 3, 3:33 PM CST | Wind Chill Advisory | DLH | 23 hr |
| Jan 6, 3:40 AM CST | Wind Chill Warning | DLH | 32 hr |
| Jan 7, 10:29 AM CST | Wind Chill Advisory | DLH | 20 hr |
| Jan 8, 4:33 AM CST | Winter Weather Advisory | DLH | 19 hr |
| Jan 8, 2:02 PM CST | Wind Chill Advisory | DLH | 44 hr |
| Jan 22, 3:29 PM CST | Winter Weather Advisory | DLH | 21 hr |
| Jan 28, 3:36 PM CST | Freezing Rain Advisory | DLH | 14 hr |
| Jan 31, 11:04 PM CST | Lake Effect Snow Advisory | DLH | 16 hr |
| Feb 1, 11:09 AM CST | Lake Effect Snow Advisory | DLH | 10 hr |
| Feb 9, 3:11 PM CST | Winter Weather Advisory | DLH | 36 hr |
| Feb 13, 3:21 PM CST | Wind Chill Advisory | DLH | 21 hr |
| Feb 17, 3:04 AM CST | Wind Chill Advisory | DLH | 33 hr |
| Feb 18, 11:59 AM CST | Wind Chill Advisory | DLH | 23 hr |
| Feb 20, 3:35 PM CST | Wind Chill Advisory | DLH | 66 hr |
| Feb 25, 3:03 PM CST | Wind Chill Advisory | DLH | 19 hr |
| Mar 2, 4:22 AM CST | Winter Weather Advisory | DLH | 39 hr |
| Mar 30, 11:15 PM CDT | Dense Fog Advisory | DLH | 11 hr |
| Apr 1, 4:06 AM CDT | Fire Weather Watch | DLH | 24 hr |
| Apr 1, 2:00 PM CDT | Special Weather Statement | DLH | 20 min |
| Apr 1, 2:23 PM CDT | Special Weather Statement | DLH | 22 min |
| Apr 1, 2:46 PM CDT | Special Weather Statement | DLH | 14 min |
| Apr 1, 3:06 PM CDT | Special Weather Statement | DLH | 19 min |
| Apr 2, 4:30 AM CDT | Red Flag Warning | DLH | 15 hr |
| Apr 12, 1:30 PM CDT | Fire Weather Watch | DLH | 15 hr |
| Apr 14, 3:16 PM CDT | Fire Weather Watch | DLH | 13 hr |
| Apr 15, 4:36 AM CDT | Red Flag Warning | DLH | 15 hr |
| May 3, 2:42 PM CDT | Special Weather Statement | DLH | 33 min |
| May 3, 2:48 PM CDT | Severe Thunderstorm Warning | DLH | 42 min |
| May 27, 2:36 PM CDT | Special Weather Statement | DLH | 39 min |
| May 27, 3:28 PM CDT | Special Weather Statement | DLH | 32 min |
| May 27, 4:05 PM CDT | Special Weather Statement | DLH | 25 min |
| May 30, 3:18 PM CDT | Freeze Warning | DLH | 17 hr |
| May 31, 3:05 PM CDT | Frost Advisory | DLH | 17 hr |
| Jun 9, 6:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 14, 5:53 AM CDT | Dense Fog Advisory | DLH | 3 hr |
| Jun 22, 4:48 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 28, 1:50 PM CDT | Special Weather Statement | DLH | 25 min |
| Jun 28, 2:16 PM CDT | Special Weather Statement | DLH | 14 min |
| Jun 28, 2:34 PM CDT | Special Weather Statement | DLH | 11 min |
| Jun 28, 2:46 PM CDT | Special Weather Statement | DLH | 14 min |
| Jun 28, 2:53 PM CDT | Special Weather Statement | DLH | 22 min |
| Jun 29, 11:18 AM CDT | Special Weather Statement | DLH | 27 min |
| Jun 29, 11:48 AM CDT | Special Weather Statement | DLH | 27 min |
| Jun 29, 12:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 29, 12:12 PM CDT | Severe Thunderstorm Warning | DLH | 33 min |
| Jun 29, 12:44 PM CDT | Severe Thunderstorm Warning | DLH | 33 min |
| Jun 29, 9:04 PM CDT | Special Weather Statement | DLH | 26 min |
| Jul 5, 11:29 PM CDT | Special Weather Statement | DLH | 31 min |
| Jul 12, 10:05 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 12, 9:03 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 12, 10:55 PM CDT | Special Weather Statement | DLH | 65 min |
| Jul 24, 5:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 26, 4:47 PM CDT | Special Weather Statement | DLH | 13 min |
| Jul 30, 1:25 PM CDT | Special Weather Statement | DLH | 35 min |
| Jul 30, 2:00 PM CDT | Special Weather Statement | DLH | 15 min |
| Aug 2, 4:21 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 8:38 AM CDT | Severe Thunderstorm Warning | DLH | 37 min |
| Aug 7, 8:40 PM CDT | Dense Fog Advisory | DLH | 13 hr |
| Aug 19, 4:59 AM CDT | Special Weather Statement | DLH | 31 min |
| Aug 19, 11:30 AM CDT | Areal Flood Advisory | DLH | 3 hr |
| Aug 29, 3:58 AM CDT | Special Weather Statement | DLH | 32 min |
| Sep 3, 2:08 AM CDT | Dense Fog Advisory | DLH | 10 hr |
| Sep 6, 3:42 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 6, 6:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 6, 9:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Sep 11, 2:54 PM CDT | Frost Advisory | DLH | 16 hr |
| Sep 23, 2:54 PM CDT | Areal Flood Advisory | DLH | 6 hr |
| Sep 25, 3:35 PM CDT | Dense Fog Advisory | DLH | 18 hr |
| Sep 29, 2:43 PM CDT | Freeze Warning | DLH | 17 hr |
| Sep 30, 2:52 PM CDT | Frost Advisory | DLH | 17 hr |
| Oct 1, 2:49 PM CDT | Frost Advisory | DLH | 17 hr |
| Oct 2, 3:17 PM CDT | Frost Advisory | DLH | 17 hr |
| Oct 6, 2:48 PM CDT | Frost Advisory | DLH | 17 hr |
| Nov 3, 6:22 PM CST | Dense Fog Advisory | DLH | 42 hr |
| Nov 12, 4:11 AM CST | Winter Weather Advisory | DLH | 32 hr |
| Nov 29, 2:07 PM CST | Winter Weather Advisory | DLH | 61 hr |
| Dec 14, 9:51 AM CST | Winter Weather Advisory | DLH | 14 hr |
| Dec 23, 3:42 AM CST | Winter Weather Advisory | DLH | 10 hr |
| Dec 23, 2:07 PM CST | Winter Storm Warning | DLH | 9 hr |
| Dec 25, 3:48 AM CST | Winter Storm Watch | DLH | 11 hr |
| Dec 25, 2:41 PM CST | Winter Storm Warning | DLH | 37 hr |
| Dec 27, 3:58 AM CST | Winter Storm Watch | DLH | 24 hr |
| Dec 28, 3:57 AM CST | Winter Storm Warning | DLH | 24 hr |
| Dec 28, 3:57 AM CST | Winter Weather Advisory | DLH | 29 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 archive20142016
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.