Alert archive / Wyoming / Crook County

Weather alerts in Crook County, Wyoming, 2019

240 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Crook County and its neighbors

Each county as a circle sized by its count in 2019. Tap one for its archive.

Alerts
240
Warnings
89
Watches
34
Advisories
34
Busiest month
July85 alerts
Busiest day
July 17, 201916 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 5 tornado warnings covering Crook County in 2019 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 7 minutes after it went out.

Crook County, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings5180%1100%7 min
Severe thunderstorm warnings664138%3692%23 min
Flash flood warnings110%1100%31 min

Each office's whole area, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Rapid City, SD: tornado warnings24771%1377%11 min
NWS Rapid City, SD: severe thunderstorm warnings44428935%58887%24 min
NWS Rapid City, SD: flash flood warnings241250%2886%94 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 20, 1:40 PM MSTWinter Weather AdvisoryUNR38 hr
Jan 21, 3:15 AM MSTWinter Storm WarningUNR23 hr
Jan 25, 3:11 AM MSTWinter Weather AdvisoryUNR48 hr
Jan 25, 3:12 AM MSTHigh Wind WatchUNR47 hr
Jan 27, 2:41 AM MSTHigh Wind WarningUNR32 hr
Jan 27, 2:41 AM MSTWinter Weather AdvisoryUNR32 hr
Feb 5, 2:23 PM MSTWind Chill AdvisoryUNR4 days
Feb 5, 2:23 PM MSTWinter Weather AdvisoryUNR35 hr
Feb 14, 2:14 PM MSTWinter Weather AdvisoryUNR24 hr
Feb 15, 1:47 PM MSTWinter Weather AdvisoryUNR51 hr
Feb 17, 1:43 PM MSTWind Chill AdvisoryUNR19 hr
Feb 24, 1:33 PM MSTWind Chill AdvisoryUNR20 hr
Feb 25, 2:26 PM MSTWind Chill AdvisoryUNR21 hr
Mar 1, 7:49 PM MSTWind Chill AdvisoryUNR42 hr
Mar 2, 3:14 AM MSTWind Chill WarningUNR56 hr
Mar 6, 2:13 AM MSTWinter Weather AdvisoryUNR31 hr
Mar 7, 7:10 AM MSTWinter Storm WatchUNR20 hr
Mar 8, 3:19 AM MSTWinter Storm WarningUNR38 hr
Mar 8, 3:19 AM MSTWinter Weather AdvisoryUNR41 hr
Mar 11, 2:48 AM MDTWinter Storm WatchUNR36 hr
Mar 12, 3:09 AM MDTBlizzard WarningUNR63 hr
Mar 12, 3:09 AM MDTWinter Storm WarningUNR55 hr
Mar 14, 2:35 AM MDTWinter Weather AdvisoryUNR15 hr
Mar 18, 5:43 PM MDTAreal Flood AdvisoryUNR66 hr
Mar 24, 2:53 AM MDTDense Fog AdvisoryUNR33 hr
Mar 28, 2:32 AM MDTAreal Flood WarningUNR8 days
Apr 7, 3:01 PM MDTWinter Storm WatchUNR36 hr
Apr 9, 3:08 AM MDTWinter Storm WarningUNR63 hr
Apr 28, 1:56 PM MDTWinter Storm WatchUNR24 hr
Apr 29, 2:10 PM MDTWinter Weather AdvisoryUNR45 hr
May 6, 5:03 PM MDTDense Fog AdvisoryUNR16 hr
May 7, 2:35 PM MDTDense Fog AdvisoryUNR18 hr
May 7, 2:43 PM MDTWinter Weather AdvisoryUNR27 hr
May 11, 1:38 PM MDTFrost AdvisoryUNR17 hr
May 14, 3:45 PM MDTSpecial Weather StatementUNR45 min
May 14, 3:53 PM MDTSevere Thunderstorm WarningUNR37 min
May 14, 4:25 PM MDTSevere Thunderstorm WarningUNR50 min
May 14, 5:00 PM MDTMesoscale DiscussionSPC90 min
May 14, 5:10 PM MDTSevere Thunderstorm WarningUNR32 min
May 19, 2:45 AM MDTWinter Storm WatchUNR24 hr
May 20, 2:56 AM MDTWinter Storm WarningUNR54 hr
May 20, 2:56 AM MDTWinter Weather AdvisoryUNR11 hr
May 25, 2:54 AM MDTFlood WatchUNR4 days
May 26, 2:07 PM MDTMesoscale DiscussionSPC113 min
May 26, 2:56 PM MDTSpecial Weather StatementUNR34 min
May 26, 3:18 PM MDTSevere Thunderstorm WarningUNR45 min
May 26, 3:24 PM MDTSevere Thunderstorm WarningUNR25 min
May 26, 4:17 PM MDTSpecial Weather StatementUNR43 min
May 26, 5:53 PM MDTSpecial Weather StatementUNR37 min
May 27, 8:30 AM MDTDense Fog AdvisoryUNR6 hr
May 30, 5:23 AM MDTAreal Flood AdvisoryUNR33 hr
Jun 3, 3:40 PM MDTMesoscale DiscussionSPC95 min
Jun 5, 11:52 AM MDTSevere Thunderstorm WarningUNR53 min
Jun 5, 12:11 PM MDTSpecial Weather StatementUNR19 min
Jun 5, 12:38 PM MDTMesoscale DiscussionSPC2 hr
Jun 5, 2:31 PM MDTSpecial Weather StatementUNR14 min
Jun 5, 2:41 PM MDTSpecial Weather StatementUNR34 min
Jun 5, 2:59 PM MDTSevere Thunderstorm WarningUNR46 min
Jun 5, 3:44 PM MDTSevere Thunderstorm WarningUNR26 min
Jun 5, 4:11 PM MDTSpecial Weather StatementUNR34 min
Jun 7, 2:54 PM MDTMesoscale DiscussionSPC3 hr
Jun 7, 3:45 PM MDTSevere Thunderstorm WatchSPC6 hr
Jun 7, 5:22 PM MDTSevere Thunderstorm WarningUNR38 min
Jun 11, 5:49 PM MDTSpecial Weather StatementUNR26 min
Jun 14, 7:33 PM MDTSpecial Weather StatementUNR27 min
Jun 19, 4:00 PM MDTMesoscale DiscussionSPC2 hr
Jun 19, 4:38 PM MDTSpecial Weather StatementUNR22 min
Jun 19, 4:54 PM MDTSevere Thunderstorm WarningUNR66 min
Jun 19, 6:06 PM MDTSpecial Weather StatementUNR24 min
Jun 19, 7:59 PM MDTSevere Thunderstorm WarningUNR39 min
Jun 19, 8:02 PM MDTMesoscale DiscussionSPC118 min
Jun 25, 2:36 PM MDTMesoscale DiscussionSPC2 hr
Jun 25, 7:17 PM MDTSevere Thunderstorm WarningUNR43 min
Jun 25, 7:50 PM MDTSevere Thunderstorm WarningUNR55 min
Jun 25, 7:56 PM MDTTornado WarningUNR34 min
Jun 25, 8:38 PM MDTSevere Thunderstorm WarningUNR37 min
Jun 26, 2:36 PM MDTMesoscale DiscussionSPC2 hr
Jun 26, 4:37 PM MDTSevere Thunderstorm WatchSPC6 hr
Jun 26, 8:26 PM MDTSevere Thunderstorm WarningUNR64 min
Jun 26, 8:51 PM MDTSevere Thunderstorm WarningUNR24 min
Jun 26, 8:58 PM MDTMesoscale DiscussionSPC62 min
Jun 26, 9:14 PM MDTSevere Thunderstorm WarningUNR61 min
Jun 26, 10:01 PM MDTSevere Thunderstorm WarningUNR44 min
Jun 30, 11:54 AM MDTSevere Thunderstorm WatchSPC5 hr
Jun 30, 12:10 PM MDTSevere Thunderstorm WarningUNR46 min
Jun 30, 12:59 PM MDTFlash Flood WarningUNR3 hr
Jul 1, 1:33 PM MDTMesoscale DiscussionSPC117 min
Jul 2, 10:55 AM MDTFlash Flood WatchUNR38 hr
Jul 2, 12:44 PM MDTMesoscale DiscussionSPC2 hr
Jul 2, 1:33 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 2, 3:40 PM MDTSevere Thunderstorm WarningUNR50 min
Jul 2, 4:05 PM MDTSevere Thunderstorm WarningUNR55 min
Jul 2, 4:52 PM MDTSevere Thunderstorm WarningUNR38 min
Jul 2, 4:58 PM MDTSevere Thunderstorm WarningUNR47 min
Jul 2, 5:00 PM MDTSpecial Weather StatementUNR30 min
Jul 2, 5:41 PM MDTSpecial Weather StatementUNR49 min
Jul 2, 5:42 PM MDTSevere Thunderstorm WarningUNR48 min
Jul 3, 12:43 PM MDTMesoscale DiscussionSPC2 hr
Jul 3, 1:29 PM MDTSevere Thunderstorm WatchSPC9 hr
Jul 3, 4:10 PM MDTMesoscale DiscussionSPC2 hr
Jul 3, 9:26 PM MDTMesoscale DiscussionSPC64 min
Jul 4, 2:31 PM MDTSevere Thunderstorm WatchSPC8 hr
Jul 4, 3:45 PM MDTSevere Thunderstorm WarningUNR60 min
Jul 4, 3:58 PM MDTMesoscale DiscussionSPC62 min
Jul 4, 4:44 PM MDTSevere Thunderstorm WarningUNR35 min
Jul 4, 5:22 PM MDTAreal Flood AdvisoryUNR15 hr
Jul 4, 7:28 PM MDTMesoscale DiscussionSPC92 min
Jul 5, 12:44 PM MDTMesoscale DiscussionSPC61 min
Jul 5, 12:46 PM MDTFlash Flood WatchUNR7 hr
Jul 5, 12:54 PM MDTSevere Thunderstorm WarningUNR66 min
Jul 5, 1:15 PM MDTSevere Thunderstorm WatchSPC8 hr
Jul 5, 1:56 PM MDTSevere Thunderstorm WarningUNR64 min
Jul 5, 2:59 PM MDTSevere Thunderstorm WarningUNR61 min
Jul 5, 3:24 PM MDTTornado WarningUNR23 min
Jul 5, 3:54 PM MDTSevere Thunderstorm WarningUNR66 min
Jul 5, 5:19 PM MDTMesoscale DiscussionSPC116 min
Jul 6, 1:18 PM MDTMesoscale DiscussionSPC2 hr
Jul 8, 12:53 PM MDTMesoscale DiscussionSPC2 hr
Jul 8, 1:25 PM MDTSevere Thunderstorm WatchSPC10 hr
Jul 8, 8:28 PM MDTSpecial Weather StatementUNR47 min
Jul 9, 12:37 PM MDTMesoscale DiscussionSPC2 hr
Jul 9, 1:31 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 9, 4:42 PM MDTMesoscale DiscussionSPC2 hr
Jul 11, 7:14 PM MDTSpecial Weather StatementUNR16 min
Jul 11, 7:42 PM MDTSpecial Weather StatementUNR33 min
Jul 12, 6:37 PM MDTSpecial Weather StatementUNR23 min
Jul 12, 7:01 PM MDTSevere Thunderstorm WarningUNR38 min
Jul 15, 2:20 PM MDTMesoscale DiscussionSPC2 hr
Jul 15, 2:54 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 15, 5:42 PM MDTMesoscale DiscussionSPC93 min
Jul 15, 7:28 PM MDTSevere Thunderstorm WarningUNR29 min
Jul 15, 8:00 PM MDTSpecial Weather StatementUNR45 min
Jul 15, 8:33 PM MDTSpecial Weather StatementUNR42 min
Jul 15, 8:44 PM MDTSevere Thunderstorm WarningUNR61 min
Jul 16, 1:26 PM MDTMesoscale DiscussionSPC94 min
Jul 16, 2:50 PM MDTSevere Thunderstorm WatchSPC9 hr
Jul 16, 6:00 PM MDTMesoscale DiscussionSPC90 min
Jul 16, 6:58 PM MDTSevere Thunderstorm WarningUNR47 min
Jul 16, 7:25 PM MDTTornado WarningUNR26 min
Jul 16, 7:29 PM MDTSevere Thunderstorm WarningUNR46 min
Jul 16, 7:36 PM MDTTornado Warning Tornado observedUNR28 min
Jul 16, 7:41 PM MDTSevere Thunderstorm WarningUNR49 min
Jul 16, 7:52 PM MDTSevere Thunderstorm WarningUNR25 min
Jul 16, 8:02 PM MDTTornado WarningUNR13 min
Jul 17, 3:04 PM MDTMesoscale DiscussionSPC2 hr
Jul 17, 4:14 PM MDTSevere Thunderstorm WarningUNR61 min
Jul 17, 4:38 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 17, 4:52 PM MDTSevere Thunderstorm WarningUNR23 min
Jul 17, 5:05 PM MDTSevere Thunderstorm WarningUNR55 min
Jul 17, 5:17 PM MDTSevere Thunderstorm WarningUNR43 min
Jul 17, 5:50 PM MDTSevere Thunderstorm WarningUNR55 min
Jul 17, 5:59 PM MDTSevere Thunderstorm WarningUNR61 min
Jul 17, 6:40 PM MDTSevere Thunderstorm WarningUNR17 min
Jul 19, 12:26 AM MDTMesoscale DiscussionSPC3 hr
Jul 19, 9:33 PM MDTMesoscale DiscussionSPC87 min
Jul 19, 10:21 PM MDTSpecial Weather StatementUNR24 min
Jul 19, 10:26 PM MDTSevere Thunderstorm WarningUNR64 min
Jul 20, 12:23 AM MDTSevere Thunderstorm WarningUNR67 min
Jul 21, 1:57 AM MDTSpecial Weather StatementUNR48 min
Jul 24, 3:35 PM MDTSevere Thunderstorm WarningUNR25 min
Jul 24, 3:51 PM MDTMesoscale DiscussionSPC2 hr
Jul 24, 3:52 PM MDTSevere Thunderstorm WarningUNR38 min
Jul 27, 1:54 AM MDTFlash Flood WatchUNR24 hr
Jul 30, 2:55 PM MDTMesoscale DiscussionSPC2 hr
Jul 30, 5:08 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 30, 10:29 PM MDTSpecial Weather StatementUNR31 min
Jul 30, 11:56 PM MDTSevere Thunderstorm WarningUNR20 min
Jul 31, 12:05 AM MDTSpecial Weather StatementUNR55 min
Jul 31, 1:06 AM MDTSevere Thunderstorm WarningUNR27 min
Jul 31, 1:50 PM MDTFlash Flood WatchUNR38 hr
Jul 31, 2:49 PM MDTMesoscale DiscussionSPC2 hr
Aug 3, 2:22 PM MDTMesoscale DiscussionSPC2 hr
Aug 3, 4:25 PM MDTSevere Thunderstorm WarningUNR65 min
Aug 3, 4:41 PM MDTSpecial Weather StatementUNR19 min
Aug 3, 5:04 PM MDTSevere Thunderstorm WarningUNR56 min
Aug 9, 12:04 AM MDTSpecial Weather StatementUNR86 min
Aug 10, 12:44 PM MDTMesoscale DiscussionSPC91 min
Aug 10, 2:46 PM MDTSpecial Weather StatementUNR29 min
Aug 10, 3:04 PM MDTSevere Thunderstorm WatchSPC7 hr
Aug 10, 3:33 PM MDTSevere Thunderstorm WarningUNR57 min
Aug 10, 4:53 PM MDTMesoscale DiscussionSPC2 hr
Aug 10, 5:05 PM MDTSevere Thunderstorm WarningUNR29 min
Aug 10, 8:05 PM MDTSevere Thunderstorm WarningUNR26 min
Aug 10, 8:34 PM MDTMesoscale DiscussionSPC86 min
Aug 10, 8:35 PM MDTSpecial Weather StatementUNR25 min
Aug 10, 9:08 PM MDTSpecial Weather StatementUNR37 min
Aug 10, 9:26 PM MDTAreal Flood AdvisoryUNR12 hr
Aug 11, 3:15 AM MDTFlash Flood WatchUNR25 hr
Aug 11, 12:15 PM MDTMesoscale DiscussionSPC90 min
Aug 11, 1:59 PM MDTTornado WatchSPC10 hr
Aug 11, 3:35 PM MDTSpecial Weather StatementUNR40 min
Aug 11, 4:12 PM MDTSevere Thunderstorm WarningUNR48 min
Aug 11, 4:57 PM MDTSevere Thunderstorm WarningUNR36 min
Aug 11, 5:54 PM MDTMesoscale DiscussionSPC66 min
Aug 14, 8:14 PM MDTMesoscale DiscussionSPC91 min
Aug 14, 8:40 PM MDTSevere Thunderstorm WarningUNR65 min
Aug 14, 9:44 PM MDTSevere Thunderstorm WarningUNR61 min
Aug 14, 10:13 PM MDTSevere Thunderstorm WarningUNR62 min
Aug 17, 7:29 AM MDTSpecial Weather StatementUNR31 min
Aug 22, 9:22 PM MDTSpecial Weather StatementUNR38 min
Aug 22, 9:52 PM MDTSpecial Weather StatementUNR38 min
Aug 23, 2:58 PM MDTSevere Thunderstorm WatchSPC7 hr
Aug 23, 7:57 PM MDTSpecial Weather StatementUNR48 min
Aug 23, 8:41 PM MDTSpecial Weather StatementUNR49 min
Aug 25, 6:15 PM MDTMesoscale DiscussionSPC2 hr
Aug 25, 6:33 PM MDTSevere Thunderstorm WatchSPC6 hr
Aug 25, 6:39 PM MDTSevere Thunderstorm WarningUNR54 min
Aug 25, 6:54 PM MDTSevere Thunderstorm WarningUNR70 min
Aug 25, 7:29 PM MDTSevere Thunderstorm WarningUNR46 min
Sep 1, 4:09 PM MDTMesoscale DiscussionSPC2 hr
Sep 1, 5:32 PM MDTSpecial Weather StatementUNR28 min
Sep 1, 5:56 PM MDTSpecial Weather StatementUNR34 min
Sep 10, 1:53 PM MDTTornado WatchSPC7 hr
Sep 17, 2:28 PM MDTSevere Thunderstorm WarningUNR47 min
Sep 17, 2:45 PM MDTMesoscale DiscussionSPC60 min
Sep 17, 3:11 PM MDTSpecial Weather StatementUNR49 min
Sep 20, 7:03 PM MDTSevere Thunderstorm WarningUNR47 min
Sep 29, 8:10 PM MDTSevere Thunderstorm WarningUNR36 min
Sep 29, 8:53 PM MDTSpecial Weather StatementUNR37 min
Oct 2, 2:08 AM MDTFreeze WatchUNR12 hr
Oct 2, 1:54 PM MDTFreeze WarningUNR19 hr
Oct 7, 3:03 PM MDTWinter Storm WatchUNR44 hr
Oct 8, 3:38 PM MDTWinter Storm WarningUNR53 hr
Oct 9, 11:27 AM MDTWinter Weather AdvisoryUNR50 hr
Oct 9, 10:07 PM MDTMesoscale DiscussionSPC6 hr
Oct 16, 3:02 AM MDTFire Weather WatchUNR11 hr
Oct 16, 1:42 PM MDTRed Flag WarningUNR30 hr
Oct 19, 5:40 PM MDTWinter Storm WarningUNR30 hr
Oct 19, 5:40 PM MDTWinter Weather AdvisoryUNR28 hr
Oct 22, 2:24 PM MDTWinter Weather AdvisoryUNR23 hr
Oct 28, 2:41 AM MDTWinter Weather AdvisoryUNR23 hr
Nov 9, 2:53 AM MSTWinter Weather AdvisoryUNR46 hr
Nov 20, 2:46 AM MSTWinter Weather AdvisoryUNR21 hr
Nov 26, 1:26 PM MSTWinter Storm WatchUNR61 hr
Nov 28, 2:17 AM MSTBlizzard WarningUNR70 hr
Nov 28, 2:17 AM MSTWinter Storm WarningUNR3 days
Nov 30, 7:17 PM MSTWinter Weather AdvisoryUNR13 hr
Dec 14, 6:13 AM MSTFreezing Fog AdvisoryUNR7 hr
Dec 21, 12:27 PM MSTHigh Wind WarningUNR22 hr
Dec 27, 2:03 PM MSTWinter Storm WarningUNR63 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 archive20182020

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.