Alert archive / Wisconsin / Grant County

Weather alerts in Grant County, Wisconsin, 2023

95 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Grant County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts
95
Warnings
18
Watches
19
Advisories
27
Busiest month
April27 alerts
Busiest day
April 5, 20238 alerts

Over time

By month

Warning verification

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

Grant County, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings6350%850%9 min
Flash flood warnings00

Each office's whole area, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS La Crosse, WI: tornado warnings10100%10%
NWS La Crosse, WI: severe thunderstorm warnings764936%16078%23 min
NWS La Crosse, WI: flash flood warnings2150%1100%152 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 1, 5:51 AM CSTDense Fog AdvisoryARX3 hr
Jan 3, 6:22 PM CSTDense Fog AdvisoryARX8 hr
Jan 17, 2:35 AM CSTWinter Storm WatchARX25 hr
Jan 18, 3:18 AM CSTWinter Weather AdvisoryARX30 hr
Jan 27, 2:58 AM CSTWinter Weather AdvisoryARX48 hr
Jan 30, 1:52 PM CSTWind Chill AdvisoryARX20 hr
Feb 2, 2:53 AM CSTWind Chill AdvisoryARX32 hr
Feb 7, 2:25 PM CSTWinter Storm WatchARX24 hr
Feb 8, 2:28 PM CSTWinter Storm WarningARX26 hr
Feb 9, 9:48 AM CSTMesoscale DiscussionSPC4 hr
Feb 15, 2:50 AM CSTWinter Storm WatchARX11 hr
Feb 15, 2:09 PM CSTWinter Weather AdvisoryARX28 hr
Feb 16, 8:02 AM CSTMesoscale DiscussionSPC6 hr
Feb 19, 2:14 PM CSTWinter Storm WatchARX48 hr
Feb 21, 2:36 PM CSTIce Storm WarningARX36 hr
Feb 22, 8:46 AM CSTMesoscale DiscussionSPC5 hr
Feb 22, 3:27 PM CSTMesoscale DiscussionSPC4 hr
Feb 23, 2:14 AM CSTWinter Weather AdvisoryARX10 hr
Mar 7, 2:47 PM CSTWinter Storm WatchARX24 hr
Mar 8, 2:22 PM CSTWinter Storm WarningARX40 hr
Mar 9, 8:42 AM CSTMesoscale DiscussionSPC4 hr
Mar 26, 10:02 PM CDTDense Fog AdvisoryARX7 hr
Mar 31, 11:24 AM CDTMesoscale DiscussionSPC96 min
Mar 31, 11:46 AM CDTTornado Watch PDSSPC8 hr
Mar 31, 5:18 PM CDTMesoscale DiscussionSPC117 min
Mar 31, 5:30 PM CDTMesoscale DiscussionSPC2 hr
Mar 31, 6:10 PM CDTSevere Thunderstorm WarningARX35 min
Apr 4, 8:00 AM CDTMesoscale DiscussionSPC3 hr
Apr 4, 8:54 AM CDTSpecial Weather StatementARX66 min
Apr 4, 2:54 PM CDTMesoscale DiscussionSPC3 hr
Apr 4, 5:34 PM CDTMesoscale DiscussionSPC86 min
Apr 4, 6:34 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 4, 8:03 PM CDTMesoscale DiscussionSPC87 min
Apr 4, 9:19 PM CDTSpecial Weather StatementARX26 min
Apr 4, 9:51 PM CDTSpecial Weather StatementARX24 min
Apr 4, 10:16 PM CDTSpecial Weather StatementARX29 min
Apr 4, 10:59 PM CDTMesoscale DiscussionSPC91 min
Apr 4, 11:09 PM CDTSevere Thunderstorm WarningARX51 min
Apr 4, 11:49 PM CDTSpecial Weather StatementARX26 min
Apr 5, 4:27 AM CDTSpecial Weather StatementARX18 min
Apr 11, 2:20 PM CDTFire Weather WatchARX12 hr
Apr 12, 2:43 AM CDTRed Flag WarningARX17 hr
Apr 12, 11:28 AM CDTRiver Flood WatchARX70 hr
Apr 12, 2:32 PM CDTFire Weather WatchARX11 hr
Apr 13, 1:46 AM CDTRed Flag WarningARX18 hr
Apr 13, 11:13 AM CDTRiver Flood WatchARX71 hr
Apr 15, 3:22 AM CDTWinter Storm WatchARX24 hr
Apr 15, 9:52 AM CDTRiver Flood WarningARX30 days
Apr 16, 3:39 AM CDTWinter Storm WarningARX33 hr
Apr 16, 10:05 AM CDTRiver Flood WarningARX25 days
Apr 19, 8:41 AM CDTSpecial Weather StatementARX49 min
Apr 19, 10:28 AM CDTSpecial Weather StatementARX32 min
Apr 19, 9:31 PM CDTRiver Flood WatchARX14 hr
Apr 20, 1:50 PM CDTMesoscale DiscussionSPC85 min
May 7, 2:52 AM CDTDense Fog AdvisoryARX8 hr
May 14, 1:18 PM CDTAreal Flood AdvisoryARX3 hr
May 18, 2:18 PM CDTMesoscale DiscussionSPC117 min
Jun 24, 6:28 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 24, 8:32 PM CDTSevere Thunderstorm WarningARX28 min
Jun 24, 8:52 PM CDTMesoscale DiscussionSPC83 min
Jul 14, 1:55 AM CDTSevere Thunderstorm WarningARX30 min
Jul 14, 2:38 PM CDTMesoscale DiscussionSPC2 hr
Jul 14, 3:52 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 26, 1:31 AM CDTSevere Thunderstorm WatchSPC4 hr
Jul 26, 4:03 AM CDTMesoscale DiscussionSPC87 min
Jul 26, 8:43 AM CDTSpecial Weather StatementARX62 min
Jul 26, 2:04 PM CDTHeat AdvisoryARX30 hr
Jul 28, 3:28 AM CDTHeat AdvisoryARX16 hr
Jul 28, 4:57 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 28, 6:13 PM CDTSevere Thunderstorm WarningARX47 min
Jul 28, 7:17 PM CDTSevere Thunderstorm Warning Considerable damage threatARX28 min
Aug 2, 9:32 PM CDTDense Fog AdvisoryARX11 hr
Aug 11, 3:31 AM CDTSpecial Weather StatementARX59 min
Aug 11, 6:42 PM CDTMesoscale DiscussionSPC63 min
Aug 11, 9:08 PM CDTMesoscale DiscussionSPC97 min
Aug 14, 5:51 PM CDTAreal Flood AdvisoryARX3 hr
Aug 19, 2:43 AM CDTHeat AdvisoryARX39 hr
Aug 20, 2:48 AM CDTExcessive Heat WatchARX3 days
Aug 20, 2:12 PM CDTExcessive Heat WarningARX4 days
Sep 2, 2:14 PM CDTFire Weather WatchARX13 hr
Sep 3, 3:27 AM CDTRed Flag WarningARX16 hr
Sep 9, 1:59 AM CDTDense Fog AdvisoryARX8 hr
Sep 16, 4:43 PM CDTSpecial Weather StatementARX47 min
Sep 26, 1:22 AM CDTAreal Flood AdvisoryARX3 hr
Oct 8, 1:42 PM CDTFrost AdvisoryARX19 hr
Oct 9, 2:19 PM CDTFrost AdvisoryARX19 hr
Oct 10, 1:47 PM CDTFrost AdvisoryARX19 hr
Oct 27, 2:49 AM CDTFreeze WarningARX29 hr
Oct 29, 3:41 AM CDTFreeze WarningARX28 hr
Nov 25, 10:03 PM CSTWinter Weather AdvisoryARX11 hr
Dec 16, 8:12 PM CSTDense Fog AdvisoryARX10 hr
Dec 22, 3:00 PM CSTDense Fog AdvisoryARX22 hr
Dec 23, 2:26 PM CSTDense Fog AdvisoryARX21 hr
Dec 30, 6:29 AM CSTDense Fog AdvisoryARX3 hr
Dec 30, 5:27 PM CSTWinter Weather AdvisoryARX16 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 archive20222024

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.