Alert archive / Missouri / Osage County

Weather alerts in Osage County, Missouri, 2015

129 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Osage County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts
129
Warnings
51
Watches
24
Advisories
19
Busiest month
July27 alerts
Busiest day
April 8, 201511 alerts

Over time

By month

Warning verification

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

0 of 1 tornado warnings covering Osage County in 2015 had a tornado report inside them.

Osage County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings11918%1060%17 min
Flash flood warnings6350%2100%116 min

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS St. Louis, MO: tornado warnings45589%1650%11 min
NWS St. Louis, MO: severe thunderstorm warnings2149854%37874%23 min
NWS St. Louis, MO: flash flood warnings964157%12683%176 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 6, 4:16 AM CSTWind Chill AdvisoryLSX53 hr
Jan 10, 3:10 PM CSTWinter Weather AdvisoryLSX42 hr
Feb 15, 2:50 AM CSTWinter Storm WarningLSX37 hr
Feb 19, 3:58 PM CSTWinter Weather AdvisoryLSX42 hr
Feb 20, 3:22 PM CSTWinter Storm WarningLSX21 hr
Feb 20, 6:37 PM CSTMesoscale DiscussionSPC6 hr
Feb 27, 4:12 PM CSTWinter Weather AdvisoryLSX47 hr
Feb 28, 4:15 AM CSTWinter Storm WarningLSX35 hr
Mar 10, 9:40 PM CDTDense Fog AdvisoryLSX13 hr
Mar 24, 2:59 PM CDTSevere Thunderstorm WatchSPC7 hr
Mar 24, 5:30 PM CDTMesoscale DiscussionSPC90 min
Mar 24, 7:34 PM CDTMesoscale DiscussionSPC116 min
Mar 24, 9:16 PM CDTSevere Thunderstorm WarningLSX44 min
Mar 25, 8:33 PM CDTRiver Flood WarningLSX10 days
Apr 2, 5:22 AM CDTMesoscale DiscussionSPC113 min
Apr 2, 2:46 PM CDTMesoscale DiscussionSPC89 min
Apr 2, 9:48 PM CDTSevere Thunderstorm WarningLSX42 min
Apr 8, 6:17 AM CDTMesoscale DiscussionSPC88 min
Apr 8, 6:39 AM CDTSevere Thunderstorm WatchSPC6 hr
Apr 8, 9:33 AM CDTMesoscale DiscussionSPC57 min
Apr 8, 11:33 AM CDTSevere Thunderstorm WarningLSX42 min
Apr 8, 12:01 PM CDTMesoscale DiscussionSPC59 min
Apr 8, 12:36 PM CDTSevere Thunderstorm WarningLSX39 min
Apr 8, 12:50 PM CDTMesoscale DiscussionSPC85 min
Apr 8, 1:05 PM CDTSevere Thunderstorm WatchSPC5 hr
Apr 8, 1:11 PM CDTSevere Thunderstorm WarningLSX34 min
Apr 8, 3:24 PM CDTFlash Flood WatchLSX31 hr
Apr 8, 5:45 PM CDTMesoscale DiscussionSPC60 min
Apr 9, 12:58 PM CDTTornado WatchSPC6 hr
Apr 22, 3:27 PM CDTFrost AdvisoryLSX17 hr
May 10, 11:00 AM CDTMesoscale DiscussionSPC3 hr
May 10, 1:22 PM CDTTornado WatchSPC4 hr
May 14, 3:44 PM CDTMesoscale DiscussionSPC3 hr
May 15, 6:40 PM CDTMesoscale DiscussionSPC2 hr
May 17, 1:43 AM CDTMesoscale DiscussionSPC92 min
May 17, 9:55 PM CDTRiver Flood WarningLSX16 days
May 24, 12:54 PM CDTMesoscale DiscussionSPC96 min
May 24, 1:18 PM CDTTornado WatchSPC6 hr
May 24, 6:04 PM CDTMesoscale DiscussionSPC116 min
May 29, 8:55 PM CDTFlash Flood WatchLSX22 hr
Jun 5, 11:40 AM CDTRiver Flood WarningLSX32 days
Jun 13, 3:51 PM CDTMesoscale DiscussionSPC84 min
Jun 16, 3:42 AM CDTFlash Flood WatchLSX4 days
Jun 16, 8:07 PM CDTRiver Flood WarningLSX3 days
Jun 17, 10:09 AM CDTAreal Flood AdvisoryLSX6 hr
Jun 18, 12:12 PM CDTRiver Flood WarningLSX9 days
Jun 19, 10:20 AM CDTFlash Flood WarningLSX6 hr
Jun 19, 4:02 PM CDTAreal Flood WarningLSX12 hr
Jun 21, 9:42 AM CDTMesoscale DiscussionSPC2 hr
Jun 21, 12:12 PM CDTSevere Thunderstorm WatchSPC5 hr
Jun 21, 3:56 PM CDTMesoscale DiscussionSPC2 hr
Jun 22, 10:54 AM CDTRiver Flood WarningLSX51 hr
Jun 25, 4:06 AM CDTFlash Flood WatchLSX39 hr
Jun 25, 4:53 PM CDTSevere Thunderstorm WatchSPC9 hr
Jun 25, 7:27 PM CDTMesoscale DiscussionSPC93 min
Jun 26, 3:40 AM CDTFlash Flood WarningLSX7 hr
Jun 26, 5:55 AM CDTRiver Flood WarningLSX50 hr
Jun 28, 1:36 PM CDTMesoscale DiscussionSPC114 min
Jun 28, 3:03 PM CDTTornado WatchSPC8 hr
Jun 28, 5:07 PM CDTSevere Thunderstorm WarningLSX38 min
Jun 28, 5:32 PM CDTSevere Thunderstorm WarningLSX43 min
Jun 28, 5:45 PM CDTSevere Thunderstorm WarningLSX31 min
Jun 28, 5:56 PM CDTMesoscale DiscussionSPC94 min
Jun 28, 6:08 PM CDTTornado WarningLSX13 min
Jun 30, 4:08 PM CDTFlash Flood WatchLSX36 hr
Jul 1, 10:51 AM CDTRiver Flood WarningLSX62 hr
Jul 1, 8:16 PM CDTMesoscale DiscussionSPC119 min
Jul 1, 8:25 PM CDTSevere Thunderstorm WarningLSX50 min
Jul 1, 8:55 PM CDTFlash Flood WarningLSX4 hr
Jul 1, 9:13 PM CDTSevere Thunderstorm WarningLSX47 min
Jul 1, 10:34 PM CDTFlash Flood WarningLSX6 hr
Jul 2, 12:58 AM CDTAreal Flood WarningLSX9 hr
Jul 2, 3:20 AM CDTAreal Flood WarningLSX9 hr
Jul 2, 10:01 AM CDTAreal Flood WarningLSX12 hr
Jul 2, 12:12 PM CDTAreal Flood WarningLSX24 hr
Jul 6, 3:55 AM CDTFlash Flood WatchLSX68 hr
Jul 8, 10:15 AM CDTRiver Flood WarningLSX16 days
Jul 8, 11:05 AM CDTRiver Flood WarningLSX40 hr
Jul 9, 3:35 AM CDTFlash Flood WatchLSX27 hr
Jul 10, 5:50 AM CDTRiver Flood WarningLSX5 days
Jul 11, 3:30 PM CDTHeat AdvisoryLSX3 days
Jul 12, 9:40 AM CDTRiver Flood WarningLSX3 days
Jul 13, 4:33 PM CDTMesoscale DiscussionSPC57 min
Jul 13, 6:20 PM CDTSevere Thunderstorm WatchSPC4 hr
Jul 16, 3:46 PM CDTHeat AdvisoryLSX3 days
Jul 19, 4:03 PM CDTFlash Flood WatchLSX20 hr
Jul 24, 2:08 PM CDTMesoscale DiscussionSPC67 min
Jul 24, 3:59 PM CDTHeat AdvisoryLSX27 hr
Jul 25, 4:05 PM CDTHeat AdvisoryLSX48 hr
Jul 26, 2:06 AM CDTMesoscale DiscussionSPC2 hr
Jul 26, 2:54 AM CDTSpecial Weather StatementLSX51 min
Jul 27, 3:40 PM CDTExcessive Heat WarningLSX48 hr
Aug 4, 2:44 PM CDTFlash Flood WatchLSX25 hr
Aug 9, 2:50 AM CDTHeat AdvisoryLSX16 hr
Aug 9, 3:55 PM CDTMesoscale DiscussionSPC2 hr
Aug 9, 5:45 PM CDTSevere Thunderstorm WatchSPC4 hr
Aug 9, 5:48 PM CDTSevere Thunderstorm WarningLSX42 min
Aug 17, 3:58 PM CDTSpecial Weather StatementLSX47 min
Aug 18, 12:49 PM CDTMesoscale DiscussionSPC116 min
Aug 19, 12:07 AM CDTMesoscale DiscussionSPC113 min
Sep 18, 11:57 PM CDTSpecial Weather StatementLSX63 min
Oct 16, 2:36 AM CDTFrost AdvisoryLSX29 hr
Oct 17, 2:52 AM CDTFrost AdvisoryLSX29 hr
Nov 1, 3:48 AM CSTDense Fog AdvisoryLSX4 hr
Nov 1, 11:07 PM CSTDense Fog AdvisoryLSX11 hr
Nov 2, 8:43 PM CSTDense Fog AdvisoryLSX13 hr
Nov 5, 5:46 PM CSTMesoscale DiscussionSPC59 min
Nov 10, 6:56 PM CSTWind AdvisoryLSX35 hr
Nov 16, 4:13 AM CSTFlash Flood WatchLSX48 hr
Nov 17, 3:48 PM CSTAreal Flood WarningLSX6 hr
Nov 17, 4:22 PM CSTAreal Flood WarningLSX6 hr
Nov 17, 9:42 PM CSTAreal Flood WarningLSX12 hr
Nov 18, 5:36 AM CSTRiver Flood WarningLSX28 hr
Nov 25, 3:24 AM CSTFlood WatchLSX3 days
Dec 14, 12:20 PM CSTRiver Flood WarningLSX7 days
Dec 23, 12:42 PM CSTMesoscale DiscussionSPC2 hr
Dec 23, 1:29 PM CSTWind AdvisoryLSX9 hr
Dec 23, 1:55 PM CSTTornado WatchSPC4 hr
Dec 23, 3:24 PM CSTMesoscale DiscussionSPC96 min
Dec 25, 2:17 AM CSTFlash Flood WatchLSX4 days
Dec 26, 9:21 AM CSTRiver Flood WarningLSX6 days
Dec 26, 9:42 AM CSTRiver Flood WarningLSX4 days
Dec 26, 1:40 PM CSTRiver Flood WarningLSX7 days
Dec 26, 2:41 PM CSTFlash Flood WarningLSX13 hr
Dec 27, 3:17 AM CSTAreal Flood WarningLSX12 hr
Dec 27, 3:05 PM CSTAreal Flood WarningLSX24 hr
Dec 28, 5:21 AM CSTFlash Flood WarningLSX7 hr
Dec 28, 12:37 PM CSTAreal Flood WarningLSX24 hr
Dec 29, 12:14 PM CSTAreal Flood WarningLSX24 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 archive20142016

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.