Alert archive / Missouri / Warren County

Weather alerts in Warren County, Missouri, 2010

153 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Warren County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts
153
Warnings
43
Watches
43
Advisories
29
Busiest month
July29 alerts
Busiest day
April 24, 20108 alerts

Over time

By month

Warning verification

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

3 of 4 tornado warnings covering Warren County in 2010 had a tornado report inside them; 1 of 2 tornado reports fell inside a warning, on average 34 minutes after it went out.

Warren County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings4325%250%34 min
Severe thunderstorm warnings20765%3100%17 min
Flash flood warnings5420%0

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS St. Louis, MO: tornado warnings941683%4384%33 min
NWS St. Louis, MO: severe thunderstorm warnings30112259%40462%23 min
NWS St. Louis, MO: flash flood warnings1124461%12273%122 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, 3:50 PM CSTWinter Storm WatchLSX12 hr
Jan 6, 4:16 AM CSTWinter Storm WarningLSX24 hr
Jan 6, 4:16 AM CSTWinter Weather AdvisoryLSX37 hr
Jan 7, 4:16 AM CSTWind Chill AdvisoryLSX24 hr
Jan 7, 3:54 PM CSTWind Chill AdvisoryLSX43 hr
Jan 15, 3:42 PM CSTFreezing Fog AdvisoryLSX20 hr
Jan 16, 2:33 PM CSTDense Fog AdvisoryLSX21 hr
Jan 17, 2:12 PM CSTDense Fog AdvisoryLSX22 hr
Jan 18, 3:00 PM CSTDense Fog AdvisoryLSX21 hr
Jan 20, 3:55 PM CSTDense Fog AdvisoryLSX17 hr
Feb 4, 4:08 AM CSTWinter Weather AdvisoryLSX44 hr
Feb 6, 4:18 AM CSTWinter Storm WatchLSX36 hr
Feb 7, 3:55 PM CSTWinter Weather AdvisoryLSX45 hr
Feb 12, 3:29 PM CSTWinter Weather AdvisoryLSX63 hr
Mar 10, 7:48 PM CSTTornado WatchSPC6 hr
Mar 10, 11:08 PM CSTMesoscale DiscussionSPC97 min
Mar 10, 11:09 PM CSTSevere Thunderstorm WarningLSX36 min
Mar 14, 10:05 AM CDTRiver Flood WarningLSX3 days
Mar 26, 9:04 PM CDTRiver Flood WarningLSX5 days
Mar 30, 2:47 PM CDTFire Weather WatchLSX20 hr
Apr 4, 8:25 PM CDTMesoscale DiscussionSPC65 min
Apr 4, 8:43 PM CDTSevere Thunderstorm WatchSPC5 hr
Apr 4, 10:03 PM CDTSevere Thunderstorm WarningLSX42 min
Apr 4, 10:41 PM CDTSevere Thunderstorm WarningLSX34 min
Apr 4, 11:16 PM CDTMesoscale DiscussionSPC59 min
Apr 5, 12:28 PM CDTMesoscale DiscussionSPC62 min
Apr 8, 4:16 AM CDTFrost AdvisoryLSX29 hr
Apr 23, 6:51 PM CDTTornado WarningLSX39 min
Apr 23, 7:06 PM CDTTornado WatchSPC5 hr
Apr 23, 7:24 PM CDTTornado WarningLSX51 min
Apr 24, 2:52 PM CDTMesoscale DiscussionSPC53 min
Apr 24, 3:20 PM CDTTornado WatchSPC7 hr
Apr 24, 4:53 PM CDTSevere Thunderstorm WarningLSX52 min
Apr 24, 5:09 PM CDTTornado WarningLSX51 min
Apr 24, 5:14 PM CDTMesoscale DiscussionSPC61 min
Apr 24, 5:51 PM CDTSevere Thunderstorm WarningLSX24 min
Apr 25, 8:56 PM CDTRiver Flood WarningLSX4 days
Apr 30, 2:08 PM CDTMesoscale DiscussionSPC67 min
Apr 30, 2:40 PM CDTTornado WatchSPC6 hr
Apr 30, 7:12 PM CDTMesoscale DiscussionSPC63 min
May 3, 12:54 PM CDTMesoscale DiscussionSPC96 min
May 3, 1:45 PM CDTSevere Thunderstorm WatchSPC6 hr
May 3, 5:12 PM CDTMesoscale DiscussionSPC93 min
May 8, 4:02 AM CDTFrost AdvisoryLSX27 hr
May 12, 2:32 AM CDTSevere Thunderstorm WarningLSX58 min
May 12, 4:00 AM CDTFlash Flood WarningLSX6 hr
May 12, 4:49 AM CDTFlash Flood WatchLSX35 hr
May 12, 4:51 AM CDTMesoscale DiscussionSPC54 min
May 12, 5:03 AM CDTFlash Flood WarningLSX6 hr
May 12, 12:28 PM CDTRiver Flood WarningLSX13 days
May 18, 3:08 PM CDTFlash Flood WatchLSX60 hr
Jun 1, 11:49 PM CDTSevere Thunderstorm WatchSPC4 hr
Jun 2, 1:31 AM CDTMesoscale DiscussionSPC89 min
Jun 6, 2:58 PM CDTFlash Flood WatchLSX61 hr
Jun 9, 10:43 AM CDTRiver Flood WarningLSX22 days
Jun 12, 12:24 PM CDTMesoscale DiscussionSPC96 min
Jun 12, 1:31 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 13, 11:55 AM CDTMesoscale DiscussionSPC65 min
Jun 13, 12:24 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 13, 2:14 PM CDTMesoscale DiscussionSPC61 min
Jun 13, 6:11 PM CDTSevere Thunderstorm WarningLSX37 min
Jun 13, 6:13 PM CDTMesoscale DiscussionSPC62 min
Jun 15, 12:29 PM CDTSevere Thunderstorm WatchSPC9 hr
Jun 18, 4:14 AM CDTHeat AdvisoryLSX6 days
Jun 19, 1:07 PM CDTMesoscale DiscussionSPC53 min
Jun 19, 1:48 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 21, 12:28 PM CDTMesoscale DiscussionSPC62 min
Jun 21, 12:58 PM CDTSevere Thunderstorm WatchSPC4 hr
Jun 21, 4:10 PM CDTMesoscale DiscussionSPC35 min
Jun 23, 2:44 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 27, 5:04 PM CDTSevere Thunderstorm WatchSPC4 hr
Jun 27, 6:52 PM CDTSevere Thunderstorm WarningLSX38 min
Jul 7, 10:54 AM CDTRiver Flood WarningLSX5 days
Jul 11, 12:17 PM CDTTornado WatchSPC3 hr
Jul 11, 2:06 PM CDTMesoscale DiscussionSPC54 min
Jul 12, 3:30 PM CDTMesoscale DiscussionSPC90 min
Jul 12, 3:55 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 12, 7:30 PM CDTSevere Thunderstorm WarningLSX30 min
Jul 13, 2:35 PM CDTHeat AdvisoryLSX52 hr
Jul 16, 4:06 PM CDTHeat AdvisoryLSX38 hr
Jul 18, 5:58 AM CDTMesoscale DiscussionSPC32 min
Jul 18, 6:22 AM CDTSevere Thunderstorm WatchSPC5 hr
Jul 18, 7:26 AM CDTSevere Thunderstorm WarningLSX49 min
Jul 18, 7:57 AM CDTSevere Thunderstorm WarningLSX48 min
Jul 19, 6:59 AM CDTSevere Thunderstorm WarningLSX76 min
Jul 19, 10:05 AM CDTMesoscale DiscussionSPC85 min
Jul 19, 10:38 AM CDTSevere Thunderstorm WatchSPC6 hr
Jul 20, 5:08 AM CDTFlash Flood WatchLSX22 hr
Jul 20, 5:46 AM CDTMesoscale DiscussionSPC89 min
Jul 20, 6:01 AM CDTFlash Flood WarningLSX6 hr
Jul 20, 7:20 AM CDTSevere Thunderstorm WarningLSX40 min
Jul 20, 7:33 AM CDTMesoscale DiscussionSPC27 min
Jul 20, 7:36 AM CDTSevere Thunderstorm WatchSPC4 hr
Jul 20, 7:57 AM CDTSevere Thunderstorm WarningLSX37 min
Jul 21, 3:39 PM CDTHeat AdvisoryLSX3 days
Jul 24, 3:32 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 24, 8:03 PM CDTMesoscale DiscussionSPC57 min
Jul 30, 1:49 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 30, 2:15 PM CDTFlash Flood WatchLSX14 hr
Jul 30, 5:01 PM CDTMesoscale DiscussionSPC89 min
Jul 30, 6:28 PM CDTMesoscale DiscussionSPC62 min
Aug 1, 3:13 PM CDTHeat AdvisoryLSX3 days
Aug 3, 4:43 AM CDTExcessive Heat WarningLSX39 hr
Aug 4, 3:12 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 6, 2:56 PM CDTExcessive Heat WatchLSX49 hr
Aug 8, 3:55 AM CDTExcessive Heat WarningLSX7 days
Aug 13, 9:34 PM CDTMesoscale DiscussionSPC56 min
Aug 20, 2:39 AM CDTFlash Flood WatchLSX25 hr
Aug 20, 7:43 PM CDTSevere Thunderstorm WarningLSX47 min
Aug 20, 10:19 PM CDTMesoscale DiscussionSPC86 min
Sep 2, 3:46 PM CDTMesoscale DiscussionSPC89 min
Sep 2, 4:25 PM CDTMesoscale DiscussionSPC65 min
Sep 2, 4:43 PM CDTSevere Thunderstorm WatchSPC6 hr
Sep 2, 6:05 PM CDTFlash Flood WarningLSX6 hr
Sep 2, 6:23 PM CDTSevere Thunderstorm WarningLSX52 min
Sep 2, 7:12 PM CDTMesoscale DiscussionSPC2 hr
Sep 8, 3:48 PM CDTFlash Flood WatchLSX27 hr
Sep 10, 11:45 PM CDTAreal Flood AdvisoryLSX4 hr
Sep 11, 1:41 AM CDTAreal Flood AdvisoryLSX5 hr
Sep 18, 1:15 PM CDTMesoscale DiscussionSPC2 hr
Sep 18, 2:21 PM CDTSevere Thunderstorm WatchSPC8 hr
Sep 18, 8:46 PM CDTSevere Thunderstorm WarningLSX44 min
Sep 18, 9:09 PM CDTFlash Flood WarningLSX6 hr
Sep 19, 3:17 AM CDTAreal Flood WarningLSX12 hr
Sep 22, 11:44 AM CDTRiver Flood WarningLSX6 days
Oct 3, 3:48 PM CDTFrost AdvisoryLSX16 hr
Oct 4, 4:16 AM CDTFrost AdvisoryLSX28 hr
Oct 25, 9:36 PM CDTMesoscale DiscussionSPC24 min
Oct 25, 10:03 PM CDTTornado WatchSPC9 hr
Oct 26, 2:21 AM CDTMesoscale DiscussionSPC114 min
Oct 26, 2:53 AM CDTSevere Thunderstorm WarningLSX52 min
Oct 26, 2:57 AM CDTSevere Thunderstorm WarningLSX48 min
Oct 26, 7:30 PM CDTFire Weather WatchLSX9 hr
Oct 27, 4:47 AM CDTRed Flag WarningLSX12 hr
Oct 27, 3:53 PM CDTFreeze WatchLSX12 hr
Oct 28, 3:47 AM CDTFreeze WarningLSX29 hr
Nov 6, 3:47 PM CDTFire Weather WatchLSX25 hr
Nov 7, 3:57 PM CSTRed Flag WarningLSX26 hr
Nov 22, 4:50 PM CSTTornado WatchSPC7 hr
Nov 22, 5:17 PM CSTSevere Thunderstorm WarningLSX43 min
Nov 24, 3:48 PM CSTFlash Flood WatchLSX12 hr
Nov 24, 9:26 PM CSTAreal Flood AdvisoryLSX6 hr
Nov 25, 3:31 AM CSTAreal Flood AdvisoryLSX6 hr
Dec 11, 4:15 AM CSTWinter Weather AdvisoryLSX32 hr
Dec 11, 4:09 PM CSTWind AdvisoryLSX29 hr
Dec 12, 4:19 AM CSTWind Chill AdvisoryLSX30 hr
Dec 15, 4:00 AM CSTWinter Weather AdvisoryLSX32 hr
Dec 23, 12:07 PM CSTWinter Weather AdvisoryLSX40 hr
Dec 31, 12:44 AM CSTMesoscale DiscussionSPC61 min
Dec 31, 2:25 AM CSTSevere Thunderstorm WatchSPC2 hr
Dec 31, 5:45 AM CSTMesoscale DiscussionSPC2 hr
Dec 31, 7:29 AM CSTTornado WatchSPC8 hr
Dec 31, 10:56 AM CSTTornado WarningLSX64 min

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.