Alert archive / Wyoming / Converse County

Weather alerts in Converse County, Wyoming, 2026

171 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Converse County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Alerts
171
Warnings
86
Watches
32
Advisories
14
Busiest month
June55 alerts
Busiest day
August 15, 202610 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 Converse County in 2026 had a tornado report inside them.

Converse County, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings421564%13100%22 min
Flash flood warnings00

Each office's whole area, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Cheyenne, WY: tornado warnings18572%1070%12 min
NWS Cheyenne, WY: severe thunderstorm warnings35014060%29376%22 min
NWS Cheyenne, WY: flash flood warnings281257%3586%38 min

An office's figures cover every county it serves, including across state lines.

The year is still running; reports filed late and damage surveys can still change these figures.

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, 7:34 PM MSTHigh Wind WatchCYS9 hr
Jan 3, 4:29 AM MSTHigh Wind WarningCYS37 hr
Jan 5, 2:31 PM MSTHigh Wind WarningCYS50 hr
Jan 14, 1:59 AM MSTHigh Wind WatchCYS24 hr
Jan 15, 1:49 AM MSTHigh Wind WarningCYS58 hr
Jan 25, 1:19 AM MSTCold Weather AdvisoryCYS28 hr
Feb 8, 12:16 AM MSTHigh Wind WatchCYS41 hr
Feb 8, 6:29 AM MSTHigh Wind WarningCYS41 hr
Feb 13, 11:49 AM MSTFire Weather WatchCYS24 hr
Feb 14, 12:00 PM MSTRed Flag WarningCYS29 hr
Feb 15, 12:27 AM MSTHigh Wind WatchCYS45 hr
Feb 16, 12:28 AM MSTWinter Storm WarningCYS3 days
Feb 16, 12:35 AM MSTFire Weather WatchCYS12 hr
Feb 16, 12:51 AM MSTHigh Wind WarningCYS46 hr
Feb 16, 11:09 AM MSTWinter Weather AdvisoryCYS3 days
Feb 16, 12:12 PM MSTRed Flag WarningCYS30 hr
Feb 25, 12:31 PM MSTRed Flag WarningCYS3 days
Mar 2, 12:23 AM MSTWinter Weather AdvisoryCYS41 hr
Mar 4, 1:00 PM MSTWinter Weather AdvisoryCYS57 hr
Mar 6, 12:54 PM MSTHigh Wind WarningCYS3 days
Mar 7, 9:26 PM MSTFire Weather WatchCYS13 hr
Mar 7, 10:50 PM MSTHigh Wind WatchCYS26 hr
Mar 8, 11:38 AM MDTRed Flag WarningCYS30 hr
Mar 9, 2:02 PM MDTHigh Wind WatchCYS45 hr
Mar 11, 10:39 AM MDTHigh Wind WarningCYS4 days
Mar 11, 1:09 PM MDTRed Flag WarningCYS3 days
Mar 14, 1:48 AM MDTWinter Weather AdvisoryCYS34 hr
Mar 14, 6:43 PM MDTMesoscale DiscussionSPC4 hr
Mar 16, 12:49 AM MDTFire Weather WatchCYS35 hr
Mar 17, 11:29 AM MDTRed Flag WarningCYS4 days
Mar 23, 12:06 PM MDTFire Weather WatchCYS13 hr
Mar 24, 1:21 AM MDTRed Flag WarningCYS45 hr
Mar 27, 1:15 AM MDTFire Weather WatchCYS11 hr
Mar 27, 12:27 PM MDTRed Flag WarningCYS3 days
Mar 30, 2:02 PM MDTHigh Wind WarningCYS8 hr
Apr 2, 2:07 PM MDTWinter Weather AdvisoryCYS28 hr
Apr 7, 2:36 AM MDTRed Flag WarningCYS17 hr
Apr 10, 12:46 PM MDTFire Weather WatchCYS22 hr
Apr 11, 11:01 AM MDTRed Flag WarningCYS57 hr
Apr 15, 10:19 AM MDTRed Flag WarningCYS34 hr
Apr 15, 1:06 PM MDTWinter Weather AdvisoryCYS50 hr
Apr 17, 12:48 PM MDTFire Weather WatchCYS25 hr
Apr 18, 2:12 PM MDTRed Flag WarningCYS54 hr
Apr 20, 1:03 PM MDTRed Flag WarningCYS55 hr
Apr 21, 12:20 AM MDTHigh Wind WatchCYS50 hr
Apr 22, 1:30 AM MDTHigh Wind WarningCYS41 hr
May 2, 2:09 PM MDTRed Flag WarningCYS6 hr
May 4, 3:15 AM MDTWinter Weather AdvisoryCYS54 hr
May 9, 12:10 PM MDTMesoscale DiscussionSPC3 hr
May 13, 5:20 PM MDTSpecial Weather StatementCYS25 min
May 16, 1:34 AM MDTWinter Storm WatchCYS24 hr
May 17, 1:50 AM MDTWinter Storm WarningCYS40 hr
May 17, 1:50 AM MDTWinter Weather AdvisoryCYS40 hr
May 17, 12:22 PM MDTFreeze WatchCYS25 hr
May 18, 1:15 AM MDTFreeze WarningCYS35 hr
May 18, 1:00 PM MDTFreeze WatchCYS23 hr
May 19, 11:40 AM MDTFreeze WarningCYS22 hr
May 28, 3:21 PM MDTSpecial Weather StatementCYS39 min
May 28, 5:21 PM MDTSpecial Weather StatementCYS39 min
May 30, 2:46 PM MDTSevere Thunderstorm WarningCYS17 min
Jun 2, 1:40 PM MDTSevere Thunderstorm WatchSPC9 hr
Jun 2, 2:56 PM MDTSevere Thunderstorm WarningCYS49 min
Jun 2, 2:57 PM MDTSevere Thunderstorm WarningCYS48 min
Jun 2, 3:00 PM MDTSevere Thunderstorm WarningCYS45 min
Jun 2, 3:25 PM MDTSevere Thunderstorm WarningCYS50 min
Jun 2, 3:47 PM MDTTornado WarningCYS17 min
Jun 2, 3:57 PM MDTSevere Thunderstorm WarningCYS48 min
Jun 2, 4:08 PM MDTSevere Thunderstorm WarningCYS30 min
Jun 2, 4:44 PM MDTSevere Thunderstorm WarningCYS18 min
Jun 4, 6:29 PM MDTSpecial Weather StatementCYS31 min
Jun 8, 10:03 AM MDTRed Flag WarningCYS4 days
Jun 14, 12:37 AM MDTFire Weather WatchCYS11 hr
Jun 14, 11:24 AM MDTRed Flag WarningCYS34 hr
Jun 14, 12:44 PM MDTFire Weather WatchCYS32 hr
Jun 15, 8:57 PM MDTRed Flag WarningCYS49 hr
Jun 20, 12:50 PM MDTMesoscale DiscussionSPC115 min
Jun 20, 1:27 PM MDTSevere Thunderstorm WatchSPC8 hr
Jun 20, 3:25 PM MDTSevere Thunderstorm WarningCYS65 min
Jun 20, 3:49 PM MDTSevere Thunderstorm Warning Considerable damage threatCYS56 min
Jun 20, 4:29 PM MDTSevere Thunderstorm WarningCYS46 min
Jun 20, 4:41 PM MDTSevere Thunderstorm WarningCYS49 min
Jun 20, 5:08 PM MDTSevere Thunderstorm WarningCYS67 min
Jun 22, 11:29 AM MDTMesoscale DiscussionSPC2 hr
Jun 22, 12:36 PM MDTSevere Thunderstorm WatchSPC9 hr
Jun 22, 1:21 PM MDTSpecial Weather StatementCYS24 min
Jun 22, 1:40 PM MDTSpecial Weather StatementCYS35 min
Jun 22, 2:07 PM MDTSevere Thunderstorm WarningCYS38 min
Jun 22, 3:19 PM MDTSpecial Weather StatementCYS26 min
Jun 22, 3:50 PM MDTSevere Thunderstorm WarningCYS40 min
Jun 22, 4:23 PM MDTSevere Thunderstorm WarningCYS67 min
Jun 22, 6:20 PM MDTMesoscale DiscussionSPC85 min
Jun 22, 10:36 PM MDTSevere Thunderstorm WarningCYS24 min
Jun 24, 2:20 PM MDTMesoscale DiscussionSPC115 min
Jun 24, 3:50 PM MDTTornado WatchSPC8 hr
Jun 24, 4:15 PM MDTSevere Thunderstorm WarningCYS45 min
Jun 24, 8:10 PM MDTSevere Thunderstorm WarningCYS50 min
Jun 24, 10:56 PM MDTSpecial Weather StatementCYS49 min
Jun 25, 11:13 AM MDTMesoscale DiscussionSPC2 hr
Jun 25, 1:39 PM MDTSevere Thunderstorm WatchSPC5 hr
Jun 25, 2:46 PM MDTMesoscale DiscussionSPC119 min
Jun 25, 3:23 PM MDTSevere Thunderstorm WarningCYS52 min
Jun 25, 3:52 PM MDTSevere Thunderstorm WarningCYS23 min
Jun 25, 4:15 PM MDTSevere Thunderstorm WarningCYS60 min
Jun 25, 4:38 PM MDTSpecial Weather StatementCYS37 min
Jun 26, 2:37 PM MDTSevere Thunderstorm WatchSPC9 hr
Jun 26, 4:20 PM MDTSpecial Weather StatementCYS55 min
Jun 26, 4:56 PM MDTSevere Thunderstorm WarningCYS34 min
Jun 26, 5:54 PM MDTSpecial Weather StatementCYS36 min
Jun 26, 6:23 PM MDTSevere Thunderstorm WarningCYS52 min
Jun 26, 6:26 PM MDTSpecial Weather StatementCYS64 min
Jun 27, 11:25 AM MDTRed Flag WarningCYS9 hr
Jun 28, 12:43 PM MDTFire Weather WatchCYS25 hr
Jun 29, 3:22 AM MDTRed Flag WarningCYS18 hr
Jun 29, 1:18 PM MDTFire Weather WatchCYS11 hr
Jun 30, 12:07 AM MDTRed Flag WarningCYS19 hr
Jul 8, 1:27 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 8, 3:46 PM MDTSpecial Weather StatementCYS29 min
Jul 10, 2:30 AM MDTHeat AdvisoryCYS6 days
Jul 10, 2:43 AM MDTFire Weather WatchCYS40 hr
Jul 11, 1:33 AM MDTRed Flag WarningCYS5 days
Jul 17, 12:12 PM MDTHeat AdvisoryCYS3 days
Jul 22, 7:44 AM MDTFlood WatchCYS40 hr
Jul 24, 1:05 AM MDTHeat AdvisoryCYS68 hr
Jul 26, 8:56 PM MDTSevere Thunderstorm WarningCYS34 min
Jul 28, 8:34 PM MDTSpecial Weather StatementCYS41 min
Jul 28, 9:07 PM MDTSevere Thunderstorm WarningCYS23 min
Jul 29, 3:49 PM MDTSevere Thunderstorm WarningCYS41 min
Jul 31, 12:58 PM MDTHeat AdvisoryCYS56 hr
Aug 1, 12:04 PM MDTRed Flag WarningCYS57 hr
Aug 5, 1:20 PM MDTRed Flag WarningCYS31 hr
Aug 7, 2:37 PM MDTRed Flag WarningCYS54 hr
Aug 10, 1:03 AM MDTRed Flag WarningCYS20 hr
Aug 10, 1:51 PM MDTRed Flag WarningCYS31 hr
Aug 10, 4:00 PM MDTSevere Thunderstorm WarningCYS45 min
Aug 10, 4:37 PM MDTSevere Thunderstorm WarningCYS38 min
Aug 15, 1:28 PM MDTMesoscale DiscussionSPC2 hr
Aug 15, 2:50 PM MDTSpecial Weather StatementCYS25 min
Aug 15, 3:01 PM MDTSevere Thunderstorm WarningCYS32 min
Aug 15, 3:28 PM MDTSpecial Weather StatementCYS32 min
Aug 15, 3:50 PM MDTSevere Thunderstorm WarningCYS40 min
Aug 15, 3:58 PM MDTSpecial Weather StatementCYS32 min
Aug 15, 4:19 PM MDTSpecial Weather StatementCYS26 min
Aug 15, 4:26 PM MDTSevere Thunderstorm WarningCYS28 min
Aug 15, 4:36 PM MDTSevere Thunderstorm WarningCYS39 min
Aug 15, 4:45 PM MDTSevere Thunderstorm WarningCYS45 min
Aug 22, 1:15 PM MDTMesoscale DiscussionSPC3 hr
Aug 22, 4:40 PM MDTSevere Thunderstorm WarningCYS35 min
Aug 22, 4:57 PM MDTSevere Thunderstorm WarningCYS48 min
Aug 22, 5:37 PM MDTSevere Thunderstorm WarningCYS38 min
Aug 22, 6:02 PM MDTSpecial Weather StatementCYS43 min
Aug 22, 6:05 PM MDTAreal Flood AdvisoryCYS115 min
Aug 22, 6:13 PM MDTSevere Thunderstorm WarningCYS47 min
Aug 22, 7:25 PM MDTSevere Thunderstorm WarningCYS38 min
Aug 22, 9:18 PM MDTSpecial Weather StatementCYS42 min
Aug 22, 9:39 PM MDTSevere Thunderstorm WarningCYS51 min
Aug 24, 6:52 PM MDTSpecial Weather StatementCYS38 min
Aug 26, 5:38 PM MDTSpecial Weather StatementCYS37 min
Aug 26, 5:52 PM MDTSpecial Weather StatementCYS38 min
Aug 26, 7:00 PM MDTSpecial Weather StatementCYS30 min
Aug 26, 7:34 PM MDTSpecial Weather StatementCYS26 min
Aug 29, 2:53 PM MDTSevere Thunderstorm WarningCYS52 min
Sep 2, 12:09 PM MDTRed Flag WarningCYS32 hr
Sep 2, 12:47 PM MDTSpecial Weather StatementCYS43 min
Sep 2, 1:09 PM MDTMesoscale DiscussionSPC2 hr
Sep 6, 9:17 PM MDTSevere Thunderstorm Warning Considerable damage threatCYS43 min
Sep 8, 6:44 AM MDTRed Flag WarningCYS13 hr
Sep 8, 8:06 PM MDTRed Flag WarningCYS48 hr
Sep 13, 1:07 AM MDTFire Weather WatchCYS12 hr
Sep 13, 12:57 PM MDTRed Flag WarningCYS31 hr
Sep 18, 4:22 PM MDTSpecial Weather StatementCYS53 min
Sep 18, 4:40 PM MDTSpecial Weather StatementCYS50 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 archive2025

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.