Alert archive / Wisconsin / Clark County

Weather alerts in Clark County, Wisconsin, 2010

93 weather alerts in 2010, 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 2010. Tap one for its archive.

Alerts
93
Warnings
23
Watches
23
Advisories
26
Busiest month
August20 alerts
Busiest day
July 14, 20107 alerts

Over time

By month

Warning verification

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

1 of 2 tornado warnings covering Clark County in 2010 had a tornado report inside them.

Clark County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings2150%0
Severe thunderstorm warnings11918%1354%39 min
Flash flood warnings00

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS La Crosse, WI: tornado warnings11645%1735%10 min
NWS La Crosse, WI: severe thunderstorm warnings1148129%22571%23 min
NWS La Crosse, WI: flash flood warnings301260%3863%58 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, 3:23 PM CSTWind Chill AdvisoryARX21 hr
Jan 22, 3:50 PM CSTFreezing Rain AdvisoryARX19 hr
Jan 24, 9:02 AM CSTWinter Weather AdvisoryARX6 hr
Feb 14, 2:39 PM CSTWinter Weather AdvisoryARX21 hr
Mar 8, 9:24 PM CSTDense Fog AdvisoryARX15 hr
Mar 10, 11:01 AM CSTDense Fog AdvisoryARX22 hr
Mar 11, 8:34 PM CSTDense Fog AdvisoryARX14 hr
Apr 16, 3:41 PM CDTFire Weather WatchARX12 hr
Apr 17, 3:56 AM CDTRed Flag WarningARX15 hr
Apr 26, 3:15 PM CDTFrost AdvisoryARX13 hr
Apr 27, 11:47 AM CDTFrost AdvisoryARX20 hr
Apr 30, 12:01 PM CDTMesoscale DiscussionSPC29 min
Apr 30, 12:23 PM CDTSevere Thunderstorm WatchSPC6 hr
May 4, 2:49 PM CDTMesoscale DiscussionSPC56 min
May 5, 9:41 AM CDTWind AdvisoryARX7 hr
May 7, 3:27 PM CDTFreeze WatchARX12 hr
May 8, 3:36 AM CDTFreeze WarningARX29 hr
May 9, 3:17 PM CDTFrost AdvisoryARX17 hr
May 25, 12:32 PM CDTSevere Thunderstorm WarningARX43 min
May 25, 12:59 PM CDTMesoscale DiscussionSPC91 min
Jun 17, 4:46 PM CDTMesoscale DiscussionSPC59 min
Jun 17, 5:50 PM CDTTornado WatchSPC7 hr
Jun 22, 2:40 AM CDTDense Fog AdvisoryARX6 hr
Jun 23, 2:36 AM CDTSevere Thunderstorm WatchSPC5 hr
Jun 23, 2:48 PM CDTMesoscale DiscussionSPC87 min
Jun 26, 4:13 AM CDTFlash Flood WatchARX27 hr
Jun 26, 11:14 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 26, 11:52 PM CDTSevere Thunderstorm WarningARX56 min
Jul 7, 6:48 PM CDTAreal Flood AdvisoryARX2 hr
Jul 10, 11:41 AM CDTMesoscale DiscussionSPC94 min
Jul 14, 8:26 AM CDTMesoscale DiscussionSPC64 min
Jul 14, 11:43 AM CDTTornado WatchSPC7 hr
Jul 14, 12:28 PM CDTSevere Thunderstorm WarningARX62 min
Jul 14, 4:06 PM CDTSevere Thunderstorm WarningARX54 min
Jul 14, 4:20 PM CDTTornado WarningARX25 min
Jul 14, 4:43 PM CDTTornado WarningARX37 min
Jul 14, 5:01 PM CDTSevere Thunderstorm WarningARX25 min
Jul 14, 8:09 PM CDTMesoscale DiscussionSPC66 min
Jul 17, 8:55 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 20, 2:15 PM CDTMesoscale DiscussionSPC60 min
Jul 20, 3:18 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 23, 11:16 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 27, 8:21 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 27, 8:40 PM CDTSevere Thunderstorm WarningARX65 min
Jul 27, 9:33 PM CDTSevere Thunderstorm WarningARX57 min
Jul 31, 9:30 PM CDTDense Fog AdvisoryARX12 hr
Aug 7, 8:57 PM CDTMesoscale DiscussionSPC93 min
Aug 7, 9:16 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 7, 10:39 PM CDTMesoscale DiscussionSPC2 hr
Aug 8, 2:34 AM CDTMesoscale DiscussionSPC116 min
Aug 8, 6:30 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 8, 11:19 PM CDTMesoscale DiscussionSPC86 min
Aug 11, 1:37 AM CDTSevere Thunderstorm WarningARX53 min
Aug 12, 3:54 AM CDTHeat AdvisoryARX15 hr
Aug 13, 12:48 AM CDTMesoscale DiscussionSPC57 min
Aug 13, 1:34 AM CDTFlash Flood WatchARX17 min
Aug 13, 1:51 AM CDTFlash Flood WatchARX22 hr
Aug 13, 4:20 AM CDTMesoscale DiscussionSPC115 min
Aug 13, 5:27 AM CDTSevere Thunderstorm WatchSPC8 hr
Aug 13, 9:05 AM CDTFlash Flood WatchARX13 hr
Aug 18, 2:17 PM CDTMesoscale DiscussionSPC118 min
Aug 20, 1:33 PM CDTMesoscale DiscussionSPC87 min
Aug 20, 1:42 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 21, 8:56 PM CDTDense Fog AdvisoryARX13 hr
Aug 31, 6:28 PM CDTMesoscale DiscussionSPC62 min
Sep 2, 6:25 AM CDTSevere Thunderstorm WarningARX80 min
Sep 6, 6:11 AM CDTSevere Thunderstorm WarningARX28 min
Sep 6, 6:39 AM CDTSevere Thunderstorm WarningARX51 min
Sep 22, 3:15 AM CDTFlood WatchARX48 hr
Sep 23, 5:09 AM CDTAreal Flood WarningARX4 hr
Sep 23, 9:23 AM CDTAreal Flood WarningARX24 hr
Sep 23, 9:47 AM CDTRiver Flood WarningARX27 hr
Sep 23, 7:32 PM CDTAreal Flood AdvisoryARX14 hr
Sep 24, 9:24 AM CDTAreal Flood WarningARX12 hr
Sep 25, 3:02 PM CDTFrost AdvisoryARX17 hr
Sep 26, 3:41 PM CDTFrost AdvisoryARX16 hr
Oct 2, 3:27 AM CDTFreeze WarningARX30 hr
Oct 24, 3:22 PM CDTHigh Wind WatchARX24 hr
Oct 25, 3:27 PM CDTHigh Wind WarningARX52 hr
Oct 26, 5:30 AM CDTMesoscale DiscussionSPC60 min
Nov 20, 2:31 PM CSTFreezing Rain AdvisoryARX21 hr
Nov 23, 4:19 PM CSTWinter Weather AdvisoryARX32 hr
Dec 3, 3:48 AM CSTWinter Weather AdvisoryARX38 hr
Dec 9, 3:34 AM CSTWinter Weather AdvisoryARX12 hr
Dec 9, 3:50 PM CSTWinter Storm WatchARX24 hr
Dec 10, 4:16 AM CSTWinter Storm WarningARX54 hr
Dec 11, 9:56 AM CSTMesoscale DiscussionSPC5 hr
Dec 11, 1:46 PM CSTMesoscale DiscussionSPC6 hr
Dec 12, 10:01 AM CSTWind Chill AdvisoryARX25 hr
Dec 19, 3:54 AM CSTWinter Storm WatchARX12 hr
Dec 19, 3:42 PM CSTWinter Storm WarningARX44 hr
Dec 29, 11:04 AM CSTDense Fog AdvisoryARX39 hr
Dec 30, 3:13 PM CSTWinter Weather AdvisoryARX24 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 archive20092011

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.