Alert archive / Colorado / Sedgwick County

Weather alerts in Sedgwick County, Colorado, 2015

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

Sedgwick County and its neighbors

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

Alerts
118
Warnings
22
Watches
22
Advisories
17
Busiest month
May26 alerts
Busiest day
April 23, 20155 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 3 tornado warnings covering Sedgwick County in 2015 had a tornado report inside them.

Sedgwick County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings3167%0
Severe thunderstorm warnings9367%540%38 min
Flash flood warnings00

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Denver/Boulder, CO: tornado warnings591280%2952%13 min
NWS Denver/Boulder, CO: severe thunderstorm warnings1937064%20867%15 min
NWS Denver/Boulder, CO: flash flood warnings33585%9100%37 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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 2, 3:37 PM MSTWinter Weather AdvisoryBOU29 hr
Jan 3, 9:12 PM MSTWind Chill AdvisoryBOU12 hr
Feb 20, 12:53 PM MSTWinter Weather AdvisoryBOU58 hr
Mar 16, 3:39 AM MDTRed Flag WarningBOU14 hr
Mar 22, 2:56 PM MDTFire Weather WatchBOU24 hr
Mar 23, 2:40 PM MDTRed Flag WarningBOU27 hr
Apr 11, 2:39 PM MDTFire Weather WatchBOU7 hr
Apr 11, 9:10 PM MDTRed Flag WarningBOU22 hr
Apr 13, 2:45 PM MDTRed Flag WarningBOU29 hr
Apr 15, 1:41 PM MDTMesoscale DiscussionSPC3 hr
Apr 15, 4:49 PM MDTMesoscale DiscussionSPC2 hr
Apr 17, 4:05 PM MDTMesoscale DiscussionSPC2 hr
Apr 17, 4:37 PM MDTTornado WatchSPC7 hr
Apr 17, 6:06 PM MDTMesoscale DiscussionSPC84 min
Apr 17, 7:56 PM MDTMesoscale DiscussionSPC94 min
Apr 18, 2:08 PM MDTTornado WatchSPC6 hr
Apr 18, 5:07 PM MDTMesoscale DiscussionSPC53 min
Apr 18, 7:27 PM MDTMesoscale DiscussionSPC63 min
Apr 23, 1:10 PM MDTMesoscale DiscussionSPC95 min
Apr 23, 4:55 PM MDTSpecial Weather StatementBOU35 min
Apr 23, 5:05 PM MDTSevere Thunderstorm WarningBOU25 min
Apr 23, 5:29 PM MDTTornado WarningBOU31 min
Apr 23, 5:37 PM MDTSevere Thunderstorm WarningBOU23 min
Apr 23, 6:00 PM MDTTornado WarningBOU30 min
Apr 23, 6:30 PM MDTSevere Thunderstorm WarningBOU30 min
May 5, 8:28 AM MDTDense Fog AdvisoryBOU4 hr
May 8, 11:08 AM MDTAreal Flood AdvisoryBOU60 hr
May 9, 11:55 AM MDTTornado WatchSPC11 hr
May 9, 12:23 PM MDTRiver Flood WarningBOU8 days
May 9, 1:07 PM MDTWinter Weather AdvisoryBOU20 hr
May 9, 2:34 PM MDTMesoscale DiscussionSPC56 min
May 9, 5:16 PM MDTMesoscale DiscussionSPC119 min
May 10, 5:26 AM MDTFrost AdvisoryBOU26 hr
May 11, 8:57 PM MDTFrost AdvisoryBOU7 hr
May 15, 12:14 PM MDTMesoscale DiscussionSPC2 hr
May 15, 12:58 PM MDTTornado WatchSPC7 hr
May 15, 5:28 PM MDTMesoscale DiscussionSPC62 min
May 15, 6:22 PM MDTSevere Thunderstorm WarningBOU38 min
May 15, 6:45 PM MDTTornado WarningBOU45 min
May 16, 12:51 PM MDTSpecial Weather StatementBOU39 min
May 19, 6:52 AM MDTAreal Flood AdvisoryBOU8 hr
May 23, 5:41 AM MDTFlash Flood WatchBOU18 hr
May 23, 12:54 PM MDTTornado WatchSPC6 hr
May 24, 4:44 AM MDTFlash Flood WatchBOU14 hr
May 27, 12:55 PM MDTMesoscale DiscussionSPC95 min
May 27, 3:36 PM MDTSevere Thunderstorm WarningBOU22 min
May 27, 5:00 PM MDTSevere Thunderstorm WarningBOU19 min
May 28, 12:39 PM MDTMesoscale DiscussionSPC2 hr
May 28, 1:18 PM MDTSevere Thunderstorm WatchSPC7 hr
May 29, 1:30 PM MDTMesoscale DiscussionSPC2 hr
May 31, 2:50 PM MDTMesoscale DiscussionSPC115 min
Jun 2, 12:49 AM MDTSpecial Weather StatementBOU41 min
Jun 2, 1:07 AM MDTAreal Flood AdvisoryBOU2 hr
Jun 3, 2:01 AM MDTMesoscale DiscussionSPC89 min
Jun 5, 4:27 AM MDTFlash Flood WatchBOU18 hr
Jun 5, 4:44 PM MDTTornado WatchSPC7 hr
Jun 6, 2:14 PM MDTMesoscale DiscussionSPC91 min
Jun 6, 4:25 PM MDTSevere Thunderstorm WatchSPC5 hr
Jun 6, 6:55 PM MDTMesoscale DiscussionSPC95 min
Jun 7, 1:36 PM MDTMesoscale DiscussionSPC114 min
Jun 7, 3:21 PM MDTSpecial Weather StatementBOU39 min
Jun 11, 12:16 PM MDTRiver Flood AdvisoryBOU8 days
Jun 16, 1:12 PM MDTMesoscale DiscussionSPC2 hr
Jun 16, 2:44 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 16, 4:53 PM MDTMesoscale DiscussionSPC97 min
Jun 16, 9:28 PM MDTMesoscale DiscussionSPC62 min
Jun 18, 2:49 AM MDTMesoscale DiscussionSPC116 min
Jun 25, 2:10 PM MDTMesoscale DiscussionSPC65 min
Jun 25, 2:30 PM MDTSevere Thunderstorm WatchSPC8 hr
Jun 25, 4:25 PM MDTMesoscale DiscussionSPC95 min
Jun 25, 5:22 PM MDTMesoscale DiscussionSPC83 min
Jun 30, 11:01 PM MDTSpecial Weather StatementBOU59 min
Jul 4, 4:18 PM MDTMesoscale DiscussionSPC117 min
Jul 11, 5:51 PM MDTMesoscale DiscussionSPC84 min
Jul 14, 2:20 PM MDTMesoscale DiscussionSPC85 min
Jul 15, 7:34 PM MDTSpecial Weather StatementBOU56 min
Jul 17, 5:02 PM MDTMesoscale DiscussionSPC118 min
Jul 18, 3:29 PM MDTMesoscale DiscussionSPC2 hr
Jul 19, 4:43 PM MDTMesoscale DiscussionSPC2 hr
Jul 19, 6:59 PM MDTSpecial Weather StatementBOU46 min
Jul 19, 7:47 PM MDTSpecial Weather StatementBOU28 min
Jul 23, 1:34 PM MDTMesoscale DiscussionSPC56 min
Jul 23, 4:08 PM MDTSpecial Weather StatementBOU52 min
Jul 25, 4:22 PM MDTMesoscale DiscussionSPC2 hr
Jul 26, 12:30 PM MDTMesoscale DiscussionSPC2 hr
Jul 26, 1:07 PM MDTSevere Thunderstorm WatchSPC9 hr
Jul 26, 4:22 PM MDTMesoscale DiscussionSPC83 min
Jul 27, 3:57 PM MDTMesoscale DiscussionSPC2 hr
Aug 1, 6:30 PM MDTSpecial Weather StatementBOU45 min
Aug 4, 9:55 AM MDTSpecial Weather StatementBOU65 min
Aug 4, 10:58 AM MDTMesoscale DiscussionSPC2 hr
Aug 5, 6:21 PM MDTSevere Thunderstorm WarningBOU24 min
Aug 7, 2:12 PM MDTMesoscale DiscussionSPC3 hr
Aug 7, 3:05 PM MDTSevere Thunderstorm WatchSPC8 hr
Aug 7, 6:27 PM MDTMesoscale DiscussionSPC2 hr
Aug 16, 5:42 AM MDTFlash Flood WatchBOU15 hr
Aug 17, 6:44 PM MDTSevere Thunderstorm WarningBOU46 min
Aug 17, 7:26 PM MDTSevere Thunderstorm WarningBOU14 min
Sep 7, 4:46 PM MDTMesoscale DiscussionSPC119 min
Sep 22, 5:06 PM MDTSpecial Weather StatementBOU24 min
Oct 6, 6:45 AM MDTDense Fog AdvisoryBOU3 hr
Oct 11, 3:11 AM MDTRed Flag WarningBOU15 hr
Oct 14, 12:25 PM MDTFreeze WatchBOU16 hr
Oct 15, 4:25 AM MDTFrost AdvisoryBOU29 hr
Oct 20, 8:46 PM MDTSpecial Weather StatementBOU44 min
Oct 23, 3:54 AM MDTFrost AdvisoryBOU28 hr
Oct 27, 3:13 AM MDTFrost AdvisoryBOU29 hr
Oct 28, 3:04 PM MDTFreeze WarningBOU18 hr
Nov 9, 3:05 PM MSTBlizzard WatchBOU14 hr
Nov 10, 5:05 AM MSTBlizzard WarningBOU30 hr
Nov 11, 1:27 AM MSTMesoscale DiscussionSPC6 hr
Nov 15, 3:36 PM MSTBlizzard WatchBOU14 hr
Nov 16, 5:57 AM MSTBlizzard WarningBOU32 hr
Nov 16, 4:56 PM MSTSpecial Weather StatementLBF49 min
Nov 25, 10:25 AM MSTWinter Weather AdvisoryBOU42 hr
Dec 14, 3:45 AM MSTWinter Storm WatchBOU11 hr
Dec 14, 3:12 PM MSTWinter Storm WarningBOU26 hr
Dec 23, 3:14 AM MSTDense Fog AdvisoryBOU7 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.