Alert archive / Wisconsin / Bayfield County
Weather alerts in Bayfield County, Wisconsin, 2017
110 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 110
- Warnings
- 20
- Watches
- 10
- Advisories
- 43
- Busiest month
- July22 alerts
- Busiest day
- July 6, 20179 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, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 16 | 9 | 44% | 5 | 60% | 21 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Duluth, MN: tornado warnings | 7 | 0 | 100% | 1 | 0% | |
| NWS Duluth, MN: severe thunderstorm warnings | 166 | 73 | 56% | 191 | 79% | 19 min |
| NWS Duluth, MN: flash flood warnings | 8 | 3 | 63% | 12 | 92% | 125 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, 3:56 PM CST | Winter Weather Advisory | DLH | 38 hr |
| Jan 4, 2:55 PM CST | Wind Chill Advisory | DLH | 21 hr |
| Jan 6, 2:10 PM CST | Wind Chill Advisory | DLH | 22 hr |
| Jan 9, 3:43 AM CST | Winter Weather Advisory | DLH | 38 hr |
| Jan 12, 12:06 PM CST | Wind Chill Advisory | DLH | 24 hr |
| Jan 19, 1:37 AM CST | Dense Fog Advisory | DLH | 7 hr |
| Jan 20, 8:36 AM CST | Freezing Rain Advisory | DLH | 3 hr |
| Jan 20, 6:47 PM CST | Winter Weather Advisory | DLH | 15 hr |
| Jan 21, 9:24 PM CST | Dense Fog Advisory | DLH | 15 hr |
| Jan 29, 3:23 PM CST | Winter Weather Advisory | DLH | 27 hr |
| Feb 6, 3:07 AM CST | Winter Weather Advisory | DLH | 36 hr |
| Feb 7, 3:17 PM CST | Winter Weather Advisory | DLH | 12 hr |
| Feb 22, 3:41 AM CST | Winter Storm Watch | DLH | 35 hr |
| Feb 23, 2:53 PM CST | Winter Weather Advisory | DLH | 39 hr |
| Mar 6, 4:25 AM CST | Wind Advisory | DLH | 59 hr |
| Mar 11, 4:15 PM CST | Winter Weather Advisory | DLH | 46 hr |
| Mar 23, 4:06 AM CDT | Winter Weather Advisory | DLH | 23 hr |
| Apr 9, 3:29 PM CDT | Winter Weather Advisory | DLH | 38 hr |
| Apr 25, 4:01 AM CDT | Winter Storm Watch | DLH | 10 hr |
| Apr 25, 2:21 PM CDT | Winter Weather Advisory | DLH | 50 hr |
| May 15, 3:35 PM CDT | Areal Flood Advisory | DLH | 3 hr |
| May 16, 3:38 PM CDT | Flash Flood Watch | DLH | 35 hr |
| May 16, 4:02 PM CDT | Tornado Watch | SPC | 6 hr |
| May 16, 5:53 PM CDT | Severe Thunderstorm Warning | DLH | 37 min |
| May 16, 6:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 16, 6:47 PM CDT | Severe Thunderstorm Warning | DLH | 43 min |
| May 16, 6:51 PM CDT | Special Weather Statement | DLH | 24 min |
| May 16, 7:18 PM CDT | Special Weather Statement | DLH | 27 min |
| May 16, 7:35 PM CDT | Severe Thunderstorm Warning | DLH | 25 min |
| May 18, 3:08 PM CDT | Freeze Warning | DLH | 15 hr |
| Jun 3, 3:59 AM CDT | Special Weather Statement | DLH | 31 min |
| Jun 4, 4:32 PM CDT | Special Weather Statement | DLH | 28 min |
| Jun 4, 4:48 PM CDT | Special Weather Statement | DLH | 27 min |
| Jun 10, 4:03 AM CDT | Wind Advisory | DLH | 14 hr |
| Jun 11, 9:51 AM CDT | Severe Thunderstorm Warning | DLH | 39 min |
| Jun 11, 10:31 AM CDT | Severe Thunderstorm Warning | DLH | 29 min |
| Jun 11, 4:01 PM CDT | Areal Flood Advisory | DLH | 6 hr |
| Jun 13, 12:50 PM CDT | Special Weather Statement | DLH | 25 min |
| Jun 13, 1:23 PM CDT | Special Weather Statement | DLH | 22 min |
| Jun 14, 2:14 AM CDT | Special Weather Statement | DLH | 31 min |
| Jun 14, 2:47 AM CDT | Special Weather Statement | DLH | 28 min |
| Jun 16, 3:09 PM CDT | Special Weather Statement | DLH | 36 min |
| Jun 17, 7:13 PM CDT | Special Weather Statement | DLH | 47 min |
| Jun 28, 6:41 PM CDT | Special Weather Statement | DLH | 19 min |
| Jun 28, 7:12 PM CDT | Special Weather Statement | DLH | 18 min |
| Jul 5, 3:21 AM CDT | Special Weather Statement | DLH | 24 min |
| Jul 5, 3:49 AM CDT | Special Weather Statement | DLH | 26 min |
| Jul 5, 6:00 AM CDT | Special Weather Statement | DLH | 30 min |
| Jul 5, 6:31 AM CDT | Special Weather Statement | DLH | 29 min |
| Jul 6, 3:26 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 6, 5:43 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 5:07 PM CDT | Special Weather Statement | DLH | 8 min |
| Jul 6, 5:19 PM CDT | Special Weather Statement | DLH | 11 min |
| Jul 6, 5:54 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 6, 5:59 PM CDT | Severe Thunderstorm Warning | DLH | 31 min |
| Jul 6, 6:12 PM CDT | Severe Thunderstorm Warning | DLH | 33 min |
| Jul 6, 6:32 PM CDT | Severe Thunderstorm Warning | DLH | 43 min |
| Jul 6, 6:44 PM CDT | Severe Thunderstorm Warning | DLH | 31 min |
| Jul 17, 3:21 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 17, 7:56 PM CDT | Severe Thunderstorm Warning | DLH | 49 min |
| Jul 17, 8:52 PM CDT | Special Weather Statement | DLH | 23 min |
| Jul 21, 7:34 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 21, 7:55 PM CDT | Severe Thunderstorm Warning | DLH | 50 min |
| Jul 21, 8:48 PM CDT | Special Weather Statement | DLH | 12 min |
| Jul 21, 9:30 PM CDT | Severe Thunderstorm Warning | DLH | 30 min |
| Jul 22, 3:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 25, 10:14 PM CDT | Severe Thunderstorm Warning | DLH | 35 min |
| Aug 4, 3:30 PM CDT | Special Weather Statement | DLH | 15 min |
| Aug 8, 5:31 PM CDT | Special Weather Statement | DLH | 14 min |
| Aug 15, 3:14 AM CDT | Dense Fog Advisory | DLH | 6 hr |
| Sep 2, 2:12 PM CDT | Special Weather Statement | DLH | 33 min |
| Sep 3, 6:55 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 8, 3:15 PM CDT | Frost Advisory | DLH | 16 hr |
| Sep 15, 1:56 PM CDT | Special Weather Statement | DLH | 34 min |
| Sep 16, 7:14 PM CDT | Special Weather Statement | DLH | 46 min |
| Sep 20, 4:19 AM CDT | Special Weather Statement | DLH | 26 min |
| Sep 20, 4:45 AM CDT | Special Weather Statement | DLH | 30 min |
| Sep 22, 8:26 AM CDT | Severe Thunderstorm Warning | DLH | 49 min |
| Sep 22, 9:12 AM CDT | Severe Thunderstorm Warning | DLH | 48 min |
| Sep 22, 9:30 AM CDT | Special Weather Statement | DLH | 30 min |
| Sep 22, 9:53 AM CDT | Severe Thunderstorm Warning | DLH | 52 min |
| Sep 22, 9:54 AM CDT | Special Weather Statement | DLH | 36 min |
| Sep 22, 12:13 PM CDT | Special Weather Statement | DLH | 32 min |
| Sep 22, 1:36 PM CDT | Special Weather Statement | DLH | 9 min |
| Sep 22, 1:47 PM CDT | Special Weather Statement | DLH | 28 min |
| Sep 29, 3:14 AM CDT | Frost Advisory | DLH | 29 hr |
| Oct 2, 3:28 AM CDT | Flash Flood Watch | DLH | 30 hr |
| Oct 2, 10:39 PM CDT | Areal Flood Advisory | DLH | 4 hr |
| Oct 5, 3:16 PM CDT | Frost Advisory | DLH | 18 hr |
| Oct 8, 3:01 PM CDT | Freeze Watch | DLH | 24 hr |
| Oct 9, 3:27 AM CDT | Freeze Warning | DLH | 30 hr |
| Oct 23, 3:35 PM CDT | Wind Advisory | DLH | 26 hr |
| Oct 26, 4:14 AM CDT | Winter Storm Warning | DLH | 53 hr |
| Oct 27, 3:59 AM CDT | Winter Weather Advisory | DLH | 6 hr |
| Oct 27, 4:01 AM CDT | Wind Advisory | DLH | 8 hr |
| Oct 27, 5:03 AM CDT | Lakeshore Flood Warning | DLH | 16 hr |
| Oct 30, 4:03 AM CDT | Winter Weather Advisory | DLH | 24 hr |
| Oct 30, 10:56 AM CDT | Winter Weather Advisory | DLH | 4 hr |
| Oct 31, 3:09 PM CDT | Winter Weather Advisory | DLH | 36 hr |
| Nov 3, 3:42 AM CDT | Winter Weather Advisory | DLH | 42 hr |
| Nov 8, 3:11 AM CST | Winter Weather Advisory | DLH | 45 hr |
| Nov 28, 1:21 PM CST | Wind Advisory | DLH | 5 hr |
| Dec 4, 3:22 AM CST | Winter Weather Advisory | DLH | 33 hr |
| Dec 4, 3:26 AM CST | Wind Advisory | DLH | 17 hr |
| Dec 4, 9:19 AM CST | Lakeshore Flood Advisory | DLH | 33 hr |
| Dec 12, 3:07 PM CST | Winter Weather Advisory | DLH | 39 hr |
| Dec 20, 3:44 AM CST | Winter Weather Advisory | DLH | 28 hr |
| Dec 24, 10:14 AM CST | Winter Weather Advisory | DLH | 12 hr |
| Dec 24, 1:24 PM CST | Wind Chill Advisory | DLH | 70 hr |
| Dec 29, 2:30 PM CST | Wind Chill Advisory | DLH | 69 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 | 16 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 33 |
| Flooding | |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 21 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 5 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Coast and beach | |
| Lakeshore Flood Warning | 1 |
| Lakeshore Flood Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.