Alert archive / Wisconsin / Clark County

Weather alerts in Clark County, Wisconsin, 2008

96 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Clark County and its neighbors

Each county as a circle sized by its count in 2008. Tap one for its archive.

Alerts
96
Warnings
19
Watches
18
Advisories
34
Busiest month
July28 alerts
Busiest day
July 16, 20085 alerts

Over time

By month

Warning verification

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

Clark County, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings11464%7100%33 min
Flash flood warnings00

Each office's whole area, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS La Crosse, WI: tornado warnings26581%1560%7 min
NWS La Crosse, WI: severe thunderstorm warnings1687158%19870%25 min
NWS La Crosse, WI: flash flood warnings341362%5357%133 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 5, 3:30 PM CSTDense Fog AdvisoryARX45 hr
Jan 7, 2:22 PM CSTDense Fog AdvisoryARX19 hr
Jan 15, 2:34 PM CSTWinter Storm WatchARX25 hr
Jan 16, 3:50 PM CSTSnow AdvisoryARX26 hr
Jan 18, 4:15 AM CSTWind Chill AdvisoryARX38 hr
Jan 20, 3:35 PM CSTSnow AdvisoryARX32 hr
Jan 28, 1:17 PM CSTWinter Storm WatchARX14 hr
Jan 29, 3:26 AM CSTWind Chill AdvisoryARX23 hr
Jan 29, 3:26 AM CSTWinter Storm WarningARX17 hr
Jan 29, 10:34 AM CSTMesoscale DiscussionSPC4 hr
Jan 29, 3:28 PM CSTWind Chill WarningARX21 hr
Jan 29, 8:08 PM CSTBlowing Snow AdvisoryARX4 hr
Jan 30, 11:54 AM CSTWind Chill AdvisoryARX6 hr
Feb 3, 3:18 PM CSTWinter Weather AdvisoryARX27 hr
Feb 4, 11:34 AM CSTMesoscale DiscussionSPC4 hr
Feb 8, 3:26 PM CSTWind Chill WatchARX11 hr
Feb 8, 3:26 PM CSTWinter Weather AdvisoryARX33 hr
Feb 9, 2:32 AM CSTWind Chill WarningARX33 hr
Feb 10, 11:44 AM CSTWind Chill AdvisoryARX6 hr
Feb 12, 3:30 PM CSTWinter Storm WatchARX21 hr
Feb 13, 12:18 PM CSTHeavy Snow WarningARX30 hr
Feb 16, 3:39 PM CSTSnow and Blowing Snow AdvisoryARX26 hr
Feb 16, 3:39 PM CSTWinter Storm WarningARX25 hr
Feb 19, 3:49 AM CSTWind Chill AdvisoryARX32 hr
Feb 29, 12:41 AM CSTWinter Weather AdvisoryARX5 hr
Mar 2, 3:31 PM CSTWinter Weather AdvisoryARX12 hr
Mar 21, 11:23 AM CDTSnow AdvisoryARX8 hr
Mar 30, 4:00 PM CDTWinter Weather AdvisoryARX38 hr
Apr 25, 2:10 PM CDTMesoscale DiscussionSPC65 min
May 17, 1:28 PM CDTMesoscale DiscussionSPC92 min
May 18, 3:10 PM CDTFrost AdvisoryARX16 hr
May 25, 2:04 PM CDTTornado Watch PDSSPC6 hr
May 25, 7:08 PM CDTSevere Thunderstorm WarningARX82 min
May 25, 7:12 PM CDTTornado WatchSPC4 hr
May 25, 9:10 PM CDTSevere Thunderstorm WarningARX35 min
May 27, 3:48 PM CDTFrost AdvisoryARX15 hr
Jun 5, 1:38 AM CDTMesoscale DiscussionSPC3 hr
Jun 5, 9:14 PM CDTTornado WatchSPC8 hr
Jun 6, 3:29 AM CDTMesoscale DiscussionSPC61 min
Jun 10, 2:45 PM CDTFlash Flood WatchARX58 hr
Jun 20, 2:26 PM CDTMesoscale DiscussionSPC94 min
Jun 28, 12:48 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 6, 12:14 PM CDTMesoscale DiscussionSPC91 min
Jul 6, 12:24 PM CDTSevere Thunderstorm WarningARX36 min
Jul 6, 5:38 PM CDTMesoscale DiscussionSPC2 hr
Jul 6, 9:43 PM CDTMesoscale DiscussionSPC92 min
Jul 10, 9:36 AM CDTMesoscale DiscussionSPC84 min
Jul 10, 12:06 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 10, 9:36 PM CDTSevere Thunderstorm WarningARX69 min
Jul 10, 11:08 PM CDTMesoscale DiscussionSPC97 min
Jul 11, 1:28 AM CDTSevere Thunderstorm WarningARX47 min
Jul 11, 9:15 PM CDTSevere Thunderstorm WatchSPC4 hr
Jul 11, 10:34 PM CDTSevere Thunderstorm WarningARX71 min
Jul 11, 11:51 PM CDTMesoscale DiscussionSPC84 min
Jul 16, 9:29 AM CDTMesoscale DiscussionSPC2 hr
Jul 16, 9:57 AM CDTSevere Thunderstorm WatchSPC8 hr
Jul 16, 10:51 AM CDTSevere Thunderstorm WarningARX39 min
Jul 16, 11:54 AM CDTSevere Thunderstorm WarningARX66 min
Jul 16, 1:30 PM CDTMesoscale DiscussionSPC2 hr
Jul 17, 10:57 AM CDTSevere Thunderstorm WatchSPC7 hr
Jul 17, 11:30 AM CDTFlash Flood WatchARX9 hr
Jul 17, 2:19 PM CDTMesoscale DiscussionSPC86 min
Jul 19, 5:22 PM CDTTornado WatchSPC5 hr
Jul 19, 6:56 PM CDTMesoscale DiscussionSPC2 hr
Jul 20, 9:21 PM CDTSevere Thunderstorm WarningARX39 min
Jul 25, 3:38 PM CDTMesoscale DiscussionSPC97 min
Jul 25, 4:45 PM CDTSevere Thunderstorm WatchSPC4 hr
Jul 29, 10:07 AM CDTMesoscale DiscussionSPC83 min
Jul 29, 2:51 PM CDTMesoscale DiscussionSPC84 min
Jul 29, 3:30 PM CDTSevere Thunderstorm WarningARX45 min
Aug 3, 10:21 PM CDTTornado WatchSPC5 hr
Aug 4, 1:46 AM CDTMesoscale DiscussionSPC89 min
Aug 6, 1:45 PM CDTMesoscale DiscussionSPC90 min
Aug 16, 6:16 PM CDTMesoscale DiscussionSPC2 hr
Sep 2, 1:42 PM CDTMesoscale DiscussionSPC93 min
Sep 7, 3:10 PM CDTSevere Thunderstorm WarningARX35 min
Oct 18, 2:30 AM CDTDense Fog AdvisoryARX8 hr
Oct 25, 2:08 PM CDTWind AdvisoryARX30 hr
Nov 2, 9:48 PM CSTDense Fog AdvisoryARX11 hr
Nov 12, 7:29 PM CSTDense Fog AdvisoryARX4 hr
Nov 30, 3:40 AM CSTWinter Weather AdvisoryARX20 hr
Dec 2, 3:15 PM CSTWinter Weather AdvisoryARX22 hr
Dec 8, 4:55 AM CSTWinter Storm WarningARX33 hr
Dec 14, 3:12 AM CSTWind Chill AdvisoryARX48 hr
Dec 18, 4:24 AM CSTWinter Weather AdvisoryARX31 hr
Dec 19, 12:09 PM CSTWinter Storm WatchARX15 hr
Dec 20, 3:19 AM CSTWinter Storm WarningARX39 hr
Dec 21, 3:54 AM CSTWinter Weather AdvisoryARX14 hr
Dec 21, 3:46 PM CSTWind Chill AdvisoryARX19 hr
Dec 22, 3:45 AM CSTWinter Weather AdvisoryARX32 hr
Dec 25, 3:55 AM CSTWinter Weather AdvisoryARX35 hr
Dec 26, 11:20 AM CSTDense Fog AdvisoryARX15 hr
Dec 27, 3:51 AM CSTWinter Weather AdvisoryARX23 hr
Dec 29, 3:32 PM CSTWinter Weather AdvisoryARX12 hr
Dec 30, 3:15 AM CSTWinter Storm WarningARX15 hr
Dec 30, 6:11 AM CSTMesoscale DiscussionSPC3 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 archive20072009

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.