Alert archive / Wisconsin / Ashland County

Weather alerts in Ashland County, Wisconsin, 2020

107 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Ashland County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts
107
Warnings
27
Watches
12
Advisories
36
Busiest month
July29 alerts
Busiest day
June 21, 20207 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

0 of 2 tornado warnings covering Ashland County in 2020 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.

Ashland County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%10%
Severe thunderstorm warnings151033%1479%21 min
Flash flood warnings220%0

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Duluth, MN: tornado warnings18478%1155%10 min
NWS Duluth, MN: severe thunderstorm warnings1266449%23264%19 min
NWS Duluth, MN: flash flood warnings9544%1560%69 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.

IssuedProductOfficeLasted
Jan 8, 3:18 PM CSTWinter Weather AdvisoryDLH27 hr
Jan 14, 10:05 AM CSTWinter Weather AdvisoryDLH32 hr
Jan 15, 2:56 PM CSTWinter Storm WatchDLH24 hr
Jan 16, 2:44 PM CSTWinter Storm WarningDLH66 hr
Jan 23, 2:28 AM CSTWinter Weather AdvisoryDLH28 hr
Feb 1, 7:41 PM CSTWind AdvisoryDLH19 hr
Feb 11, 3:33 PM CSTWinter Weather AdvisoryDLH41 hr
Feb 12, 4:27 AM CSTWind Chill AdvisoryDLH32 hr
Feb 13, 2:39 PM CSTWind Chill AdvisoryDLH19 hr
Feb 17, 6:48 PM CSTSpecial Weather StatementDLH117 min
Mar 5, 3:49 AM CSTLakeshore Flood AdvisoryDLH20 hr
Mar 19, 3:55 AM CDTWinter Weather AdvisoryDLH33 hr
Mar 27, 3:44 PM CDTLakeshore Flood WatchDLH12 hr
Mar 28, 4:02 AM CDTWinter Weather AdvisoryDLH31 hr
Mar 28, 4:11 AM CDTLakeshore Flood AdvisoryDLH32 hr
Apr 2, 3:46 AM CDTWinter Weather AdvisoryDLH44 hr
Apr 10, 3:18 PM CDTWinter Storm WatchDLH24 hr
Apr 11, 3:04 PM CDTWinter Storm WarningDLH46 hr
Apr 28, 3:29 AM CDTDense Fog AdvisoryDLH7 hr
Apr 28, 10:01 AM CDTDense Fog AdvisoryDLH119 min
May 25, 1:26 PM CDTSpecial Weather StatementDLH49 min
May 26, 3:09 AM CDTDense Fog AdvisoryDLH9 hr
May 26, 3:49 PM CDTFlash Flood WatchDLH10 hr
May 30, 4:34 PM CDTFrost AdvisoryDLH15 hr
Jun 9, 9:30 AM CDTFlash Flood WatchDLH21 hr
Jun 12, 7:22 AM CDTFrost AdvisoryDLH23 hr
Jun 15, 7:42 AM CDTSpecial Weather StatementDLH33 min
Jun 15, 8:31 AM CDTSpecial Weather StatementDLH29 min
Jun 15, 9:04 AM CDTSpecial Weather StatementDLH26 min
Jun 21, 2:54 PM CDTSevere Thunderstorm WarningDLH36 min
Jun 21, 3:22 PM CDTMesoscale DiscussionSPC113 min
Jun 21, 3:32 PM CDTSevere Thunderstorm WarningDLH28 min
Jun 21, 3:54 PM CDTSevere Thunderstorm WarningDLH51 min
Jun 21, 3:55 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 21, 4:11 PM CDTSpecial Weather StatementDLH34 min
Jun 21, 6:31 PM CDTSpecial Weather StatementDLH29 min
Jul 5, 5:40 PM CDTSevere Thunderstorm WarningDLH25 min
Jul 8, 4:15 PM CDTSevere Thunderstorm WatchSPC8 hr
Jul 8, 6:17 PM CDTMesoscale DiscussionSPC118 min
Jul 8, 7:59 PM CDTSevere Thunderstorm WarningDLH46 min
Jul 8, 8:06 PM CDTTornado WarningDLH24 min
Jul 8, 9:15 PM CDTFlash Flood WarningDLH5 hr
Jul 8, 9:34 PM CDTSevere Thunderstorm WarningDLH41 min
Jul 8, 9:51 PM CDTMesoscale DiscussionSPC114 min
Jul 8, 10:06 PM CDTSevere Thunderstorm WarningDLH24 min
Jul 8, 10:27 PM CDTSevere Thunderstorm WarningDLH63 min
Jul 17, 9:03 PM CDTMesoscale DiscussionSPC117 min
Jul 17, 10:25 PM CDTSevere Thunderstorm WatchSPC8 hr
Jul 17, 11:36 PM CDTMesoscale DiscussionSPC114 min
Jul 18, 2:44 AM CDTSpecial Weather StatementDLH31 min
Jul 18, 3:14 AM CDTSpecial Weather StatementDLH31 min
Jul 18, 3:53 PM CDTSevere Thunderstorm WatchSPC8 hr
Jul 18, 6:15 PM CDTMesoscale DiscussionSPC60 min
Jul 18, 8:36 PM CDTMesoscale DiscussionSPC114 min
Jul 18, 9:07 PM CDTSevere Thunderstorm WarningDLH23 min
Jul 18, 9:29 PM CDTSevere Thunderstorm WarningDLH31 min
Jul 18, 9:57 PM CDTSevere Thunderstorm WarningDLH48 min
Jul 18, 10:16 PM CDTSpecial Weather StatementDLH14 min
Jul 18, 10:33 PM CDTSevere Thunderstorm WarningDLH30 min
Jul 26, 1:23 AM CDTAreal Flood AdvisoryDLH3 hr
Jul 26, 2:09 AM CDTAreal Flood AdvisoryDLH3 hr
Jul 26, 7:52 AM CDTFlash Flood WarningDLH3 hr
Jul 26, 8:37 AM CDTAreal Flood AdvisoryDLH3 hr
Jul 26, 10:41 AM CDTAreal Flood WarningDLH6 hr
Jul 26, 4:27 PM CDTAreal Flood WarningDLH12 hr
Aug 8, 1:30 AM CDTSpecial Weather StatementDLH30 min
Aug 8, 2:02 AM CDTSpecial Weather StatementDLH28 min
Aug 9, 3:46 PM CDTMesoscale DiscussionSPC89 min
Aug 9, 5:18 PM CDTSpecial Weather StatementDLH12 min
Aug 14, 4:58 AM CDTSpecial Weather StatementDLH32 min
Aug 14, 5:35 AM CDTSpecial Weather StatementDLH25 min
Aug 14, 8:38 PM CDTSpecial Weather StatementDLH37 min
Aug 14, 9:21 PM CDTSpecial Weather StatementDLH39 min
Aug 14, 10:47 PM CDTAreal Flood AdvisoryDLH3 hr
Aug 21, 2:29 AM CDTDense Fog AdvisoryDLH7 hr
Aug 23, 12:19 AM CDTDense Fog AdvisoryDLH9 hr
Aug 23, 10:22 PM CDTDense Fog AdvisoryDLH8 hr
Aug 25, 11:40 PM CDTMesoscale DiscussionSPC3 hr
Aug 26, 6:19 PM CDTMesoscale DiscussionSPC86 min
Aug 26, 6:28 PM CDTSpecial Weather StatementDLH32 min
Sep 3, 5:59 AM CDTWind AdvisoryDLH7 hr
Sep 8, 9:09 AM CDTFrost AdvisoryDLH23 hr
Sep 9, 8:47 AM CDTFrost AdvisoryDLH23 hr
Sep 10, 11:15 AM CDTFreeze WarningDLH22 hr
Sep 16, 2:48 AM CDTFrost AdvisoryDLH29 hr
Sep 17, 11:33 AM CDTFreeze WarningDLH21 hr
Sep 23, 10:59 PM CDTSpecial Weather StatementDLH31 min
Sep 25, 12:58 AM CDTDense Fog AdvisoryDLH12 hr
Sep 25, 5:31 PM CDTMesoscale DiscussionSPC119 min
Sep 25, 6:47 PM CDTSpecial Weather StatementDLH13 min
Sep 25, 6:53 PM CDTSevere Thunderstorm WarningDLH52 min
Sep 25, 7:26 PM CDTTornado WarningDLH22 min
Sep 25, 7:48 PM CDTSevere Thunderstorm WarningDLH42 min
Sep 25, 8:25 PM CDTSevere Thunderstorm WarningDLH50 min
Sep 26, 12:52 AM CDTDense Fog AdvisoryDLH11 hr
Sep 26, 5:50 PM CDTSevere Thunderstorm WatchSPC3 hr
Oct 19, 2:53 PM CDTWinter Weather AdvisoryDLH38 hr
Oct 21, 3:37 PM CDTWinter Weather AdvisoryDLH30 hr
Oct 22, 4:09 AM CDTWinter Weather AdvisoryDLH23 hr
Oct 31, 3:04 PM CDTWind AdvisoryDLH22 hr
Nov 9, 3:04 PM CSTWinter Storm WatchDLH13 hr
Nov 10, 4:07 AM CSTWinter Storm WarningDLH23 hr
Nov 15, 9:10 AM CSTWinter Weather AdvisoryDLH6 hr
Dec 22, 5:25 AM CSTWinter Storm WatchDLH22 hr
Dec 22, 3:22 PM CSTWinter Storm WarningDLH57 hr
Dec 23, 5:15 PM CSTMesoscale DiscussionSPC6 hr
Dec 28, 3:01 PM CSTWinter Weather AdvisoryDLH42 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 archive20192021

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.