Alert archive / Wisconsin / Florence County

Weather alerts in Florence County, Wisconsin, 2018

82 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Florence County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
82
Warnings
8
Watches
12
Advisories
27
Busiest month
June13 alerts
Busiest day
October 3, 20186 alerts

Over time

By month

Warning verification

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

Florence County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings220%0
Flash flood warnings00

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Green Bay, WI: tornado warnings9278%450%4 min
NWS Green Bay, WI: severe thunderstorm warnings734242%13068%22 min
NWS Green Bay, WI: flash flood warnings3233%367%41 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 3, 2:37 PM CSTWind Chill AdvisoryGRB19 hr
Jan 10, 2:43 PM CSTWinter Weather AdvisoryGRB31 hr
Jan 12, 2:25 PM CSTWind Chill AdvisoryGRB19 hr
Jan 14, 4:24 AM CSTWinter Weather AdvisoryGRB44 hr
Jan 20, 3:11 PM CSTWinter Storm WatchGRB23 hr
Jan 21, 2:35 PM CSTWinter Storm WarningGRB33 hr
Jan 22, 3:15 PM CSTMesoscale DiscussionSPC6 hr
Jan 31, 2:38 PM CSTWind Chill AdvisoryGRB21 hr
Feb 1, 1:56 PM CSTWind Chill AdvisoryGRB20 hr
Feb 2, 2:03 PM CSTWinter Weather AdvisoryGRB44 hr
Feb 4, 12:24 PM CSTWind Chill AdvisoryGRB22 hr
Feb 18, 2:50 PM CSTWinter Weather AdvisoryGRB47 hr
Feb 22, 3:20 AM CSTWinter Weather AdvisoryGRB30 hr
Feb 24, 4:07 AM CSTWinter Weather AdvisoryGRB23 hr
Mar 4, 2:52 PM CSTWinter Weather AdvisoryGRB54 hr
Mar 29, 2:32 PM CDTWinter Storm WatchGRB14 hr
Mar 30, 4:20 AM CDTWinter Storm WarningGRB33 hr
Mar 31, 5:25 AM CDTMesoscale DiscussionSPC6 hr
Apr 1, 2:58 PM CDTWinter Storm WatchGRB24 hr
Apr 2, 2:48 PM CDTWinter Storm WarningGRB12 hr
Apr 3, 3:11 AM CDTWinter Storm WarningGRB28 hr
Apr 12, 3:15 PM CDTWinter Storm WatchGRB37 hr
Apr 14, 4:25 AM CDTWinter Storm WarningGRB37 hr
Apr 15, 5:53 PM CDTWinter Weather AdvisoryGRB18 hr
Apr 27, 8:15 AM CDTRiver Flood AdvisoryGRB36 hr
Apr 27, 8:15 AM CDTRiver Flood AdvisoryGRB36 hr
Apr 27, 8:24 AM CDTRiver Flood AdvisoryGRB36 hr
Apr 28, 9:06 PM CDTRiver Flood AdvisoryGRB39 hr
Apr 28, 9:12 PM CDTRiver Flood AdvisoryGRB4 days
Apr 28, 9:12 PM CDTRiver Flood AdvisoryGRB4 days
May 16, 6:32 PM CDTSpecial Weather StatementGRB43 min
May 24, 8:35 PM CDTSpecial Weather StatementGRB40 min
May 25, 6:44 PM CDTSevere Thunderstorm WarningGRB61 min
May 26, 11:43 AM CDTMesoscale DiscussionSPC3 hr
May 28, 12:57 AM CDTSpecial Weather StatementGRB93 min
May 28, 2:32 AM CDTSpecial Weather StatementGRB118 min
Jun 12, 6:56 PM CDTMesoscale DiscussionSPC3 hr
Jun 15, 4:33 PM CDTSpecial Weather StatementGRB57 min
Jun 16, 3:30 AM CDTFlash Flood WatchGRB53 hr
Jun 17, 12:12 PM CDTMesoscale DiscussionSPC93 min
Jun 17, 3:08 PM CDTMesoscale DiscussionSPC97 min
Jun 17, 3:46 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 17, 6:29 PM CDTMesoscale DiscussionSPC2 hr
Jun 17, 6:34 PM CDTSevere Thunderstorm WarningGRB34 min
Jun 28, 3:14 PM CDTHeat AdvisoryGRB52 hr
Jun 30, 3:21 AM CDTMesoscale DiscussionSPC114 min
Jun 30, 4:23 PM CDTMesoscale DiscussionSPC67 min
Jun 30, 4:41 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 30, 6:32 PM CDTSpecial Weather StatementGRB43 min
Jun 30, 8:05 PM CDTMesoscale DiscussionSPC85 min
Jun 30, 8:45 PM CDTSpecial Weather StatementGRB15 min
Jul 1, 11:37 AM CDTMesoscale DiscussionSPC83 min
Jul 1, 12:04 PM CDTTornado WatchSPC6 hr
Jul 1, 1:37 PM CDTMesoscale DiscussionSPC53 min
Jul 12, 5:51 AM CDTSpecial Weather StatementGRB84 min
Jul 12, 7:11 AM CDTSpecial Weather StatementGRB94 min
Jul 12, 10:28 PM CDTSpecial Weather StatementGRB62 min
Jul 12, 11:13 PM CDTSpecial Weather StatementGRB62 min
Aug 1, 11:33 AM CDTSpecial Weather StatementGRB42 min
Aug 5, 3:57 PM CDTMesoscale DiscussionSPC93 min
Aug 5, 4:19 PM CDTSpecial Weather StatementGRB41 min
Aug 27, 5:27 PM CDTMesoscale DiscussionSPC2 hr
Aug 27, 6:01 PM CDTSevere Thunderstorm WatchSPC7 hr
Sep 4, 8:41 AM CDTFlash Flood WatchGRB23 hr
Sep 4, 10:43 PM CDTSpecial Weather StatementGRB32 min
Sep 5, 12:20 AM CDTAreal Flood AdvisoryGRB6 hr
Sep 21, 2:34 PM CDTFrost AdvisoryGRB17 hr
Sep 28, 2:55 AM CDTFreeze WarningGRB30 hr
Oct 3, 2:31 PM CDTMesoscale DiscussionSPC89 min
Oct 3, 3:31 PM CDTTornado WatchSPC7 hr
Oct 3, 5:03 PM CDTSpecial Weather StatementGRB27 min
Oct 3, 5:15 PM CDTSpecial Weather StatementGRB30 min
Oct 3, 5:52 PM CDTSpecial Weather StatementGRB23 min
Oct 3, 6:51 PM CDTSpecial Weather StatementGRB69 min
Oct 3, 8:44 PM CDTSpecial Weather StatementGRB61 min
Oct 8, 3:04 PM CDTFlood WatchGRB48 hr
Nov 3, 2:32 PM CDTWinter Weather AdvisoryGRB28 hr
Nov 4, 11:21 AM CSTSpecial Weather StatementGRB84 min
Nov 8, 2:51 PM CSTWinter Weather AdvisoryGRB33 hr
Dec 1, 3:41 AM CSTWinter Weather AdvisoryGRB39 hr
Dec 12, 9:16 PM CSTDense Fog AdvisoryGRB13 hr
Dec 26, 4:16 AM CSTWinter Weather AdvisoryGRB30 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 archive20172019

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.