Alert archive / Nebraska / Cheyenne County

Weather alerts in Cheyenne County, Nebraska, 2026

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

Cheyenne County and its neighbors

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

Alerts
237
Warnings
80
Watches
49
Advisories
11
Busiest month
June62 alerts
Busiest day
June 8, 202613 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 2 tornado warnings covering Cheyenne County in 2026 had a tornado report inside them.

Cheyenne County, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings391464%2370%21 min
Flash flood warnings2150%1100%9 min

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 14, 1:59 AM MSTHigh Wind WatchCYS24 hr
Jan 15, 1:49 AM MSTHigh Wind WarningCYS58 hr
Jan 16, 1:24 PM MSTRed Flag WarningCYS28 hr
Jan 22, 1:36 AM MSTCold Weather AdvisoryCYS58 hr
Jan 24, 1:05 PM MSTCold Weather AdvisoryCYS40 hr
Feb 6, 12:18 PM MSTRed Flag WarningCYS3 days
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, 12:35 AM MSTFire Weather WatchCYS12 hr
Feb 16, 12:51 AM MSTHigh Wind WarningCYS46 hr
Feb 16, 12:12 PM MSTRed Flag WarningCYS30 hr
Feb 23, 1:13 AM MSTHigh Wind WarningCYS3 days
Feb 23, 11:55 AM MSTHigh Wind WatchCYS25 hr
Feb 25, 12:16 AM MSTFire Weather WatchCYS12 hr
Feb 25, 12:07 PM MSTMesoscale DiscussionSPC2 hr
Feb 25, 12:31 PM MSTRed Flag WarningCYS3 days
Mar 4, 1:00 PM MSTWinter Weather AdvisoryCYS57 hr
Mar 6, 3:36 PM MSTMesoscale DiscussionSPC4 hr
Mar 7, 9:26 PM MSTFire Weather WatchCYS13 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 12, 12:35 PM MDTBlowing Dust AdvisoryCYS7 hr
Mar 13, 1:48 PM MDTHigh Wind WatchCYS24 hr
Mar 16, 12:49 AM MDTFire Weather WatchCYS11 hr
Mar 16, 12:49 AM MDTFire Weather WatchCYS35 hr
Mar 16, 11:29 AM MDTRed Flag WarningCYS32 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
Apr 2, 12:19 AM MDTHigh Wind WarningCYS45 hr
Apr 9, 1:52 PM MDTRed Flag WarningCYS6 hr
Apr 10, 12:46 PM MDTFire Weather WatchCYS22 hr
Apr 11, 11:01 AM MDTRed Flag WarningCYS57 hr
Apr 14, 12:46 PM MDTFire Weather WatchCYS22 hr
Apr 15, 10:19 AM MDTRed Flag WarningCYS34 hr
Apr 17, 12:48 PM MDTFire Weather WatchCYS25 hr
Apr 17, 12:48 PM MDTRed Flag WarningCYS31 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, 1:44 PM MDTRed Flag WarningCYS30 hr
Apr 23, 2:18 AM MDTFire Weather WatchCYS13 hr
Apr 23, 3:35 PM MDTRed Flag WarningCYS28 hr
May 9, 12:10 PM MDTMesoscale DiscussionSPC3 hr
May 13, 12:50 AM MDTRed Flag WarningCYS65 hr
May 16, 3:05 PM MDTSevere Thunderstorm WatchSPC6 hr
May 16, 5:05 PM MDTSevere Thunderstorm WarningCYS40 min
May 17, 12:22 PM MDTFreeze WatchCYS25 hr
May 18, 1:15 AM MDTFreeze WarningCYS35 hr
May 21, 2:19 PM MDTMesoscale DiscussionSPC116 min
May 21, 2:55 PM MDTSevere Thunderstorm WatchSPC7 hr
May 21, 5:09 PM MDTSevere Thunderstorm WarningCYS51 min
May 27, 5:57 PM MDTSpecial Weather StatementCYS33 min
May 29, 6:55 PM MDTSevere Thunderstorm WarningCYS50 min
May 29, 7:15 PM MDTSpecial Weather StatementCYS45 min
May 29, 7:27 PM MDTSpecial Weather StatementCYS48 min
May 29, 7:56 PM MDTSpecial Weather StatementCYS49 min
May 30, 1:14 PM MDTMesoscale DiscussionSPC2 hr
May 30, 2:13 PM MDTSevere Thunderstorm WatchSPC7 hr
May 30, 5:20 PM MDTMesoscale DiscussionSPC85 min
May 30, 6:11 PM MDTSevere Thunderstorm Warning Considerable damage threatCYS49 min
Jun 1, 11:51 AM MDTMesoscale DiscussionSPC2 hr
Jun 1, 12:52 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 1, 3:38 PM MDTMesoscale DiscussionSPC67 min
Jun 1, 6:23 PM MDTMesoscale DiscussionSPC97 min
Jun 3, 3:50 PM MDTMesoscale DiscussionSPC115 min
Jun 4, 4:21 PM MDTSpecial Weather StatementCYS24 min
Jun 4, 4:42 PM MDTSpecial Weather StatementCYS33 min
Jun 4, 5:13 PM MDTSpecial Weather StatementCYS32 min
Jun 5, 12:15 AM MDTFire Weather WatchCYS24 hr
Jun 5, 11:47 PM MDTRed Flag WarningCYS21 hr
Jun 6, 5:23 PM MDTSpecial Weather StatementCYS37 min
Jun 7, 12:54 PM MDTFire Weather WatchCYS21 hr
Jun 7, 6:31 PM MDTSpecial Weather StatementCYS29 min
Jun 7, 7:05 PM MDTSpecial Weather StatementCYS55 min
Jun 7, 7:18 PM MDTSpecial Weather StatementCYS42 min
Jun 7, 7:24 PM MDTSevere Thunderstorm WarningCYS36 min
Jun 7, 7:39 PM MDTSevere Thunderstorm WarningCYS21 min
Jun 7, 7:54 PM MDTSevere Thunderstorm WarningCYS36 min
Jun 7, 8:14 PM MDTFlash Flood WarningCYS3 hr
Jun 7, 8:15 PM MDTMesoscale DiscussionSPC60 min
Jun 7, 8:26 PM MDTSevere Thunderstorm Warning Considerable damage threatCYS49 min
Jun 7, 9:06 PM MDTSevere Thunderstorm WarningCYS39 min
Jun 7, 9:14 PM MDTFlash Flood WarningCYS3 hr
Jun 8, 10:03 AM MDTRed Flag WarningCYS4 days
Jun 8, 2:55 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 8, 6:58 PM MDTMesoscale DiscussionSPC2 hr
Jun 9, 3:14 AM MDTSpecial Weather StatementCYS46 min
Jun 9, 2:31 PM MDTMesoscale DiscussionSPC89 min
Jun 9, 3:35 PM MDTSpecial Weather StatementCYS40 min
Jun 9, 3:45 PM MDTSevere Thunderstorm WarningCYS45 min
Jun 9, 4:25 PM MDTSpecial Weather StatementCYS35 min
Jun 9, 5:30 PM MDTSpecial Weather StatementCYS30 min
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, 1:27 PM MDTSevere Thunderstorm WatchSPC8 hr
Jun 20, 1:50 PM MDTTornado WatchSPC7 hr
Jun 20, 7:27 PM MDTSevere Thunderstorm WarningCYS48 min
Jun 20, 8:33 PM MDTSevere Thunderstorm WarningCYS42 min
Jun 22, 11:29 AM MDTMesoscale DiscussionSPC2 hr
Jun 22, 12:36 PM MDTSevere Thunderstorm WatchSPC9 hr
Jun 22, 2:10 PM MDTMesoscale DiscussionSPC2 hr
Jun 22, 3:12 PM MDTSevere Thunderstorm Warning Considerable damage threatCYS48 min
Jun 22, 6:20 PM MDTMesoscale DiscussionSPC85 min
Jun 22, 6:40 PM MDTSevere Thunderstorm Warning Considerable damage threatCYS44 min
Jun 24, 3:50 PM MDTTornado WatchSPC8 hr
Jun 24, 5:45 PM MDTSevere Thunderstorm WarningCYS30 min
Jun 24, 6:47 PM MDTMesoscale DiscussionSPC58 min
Jun 24, 7:05 PM MDTSevere Thunderstorm WarningCYS40 min
Jun 26, 2:37 PM MDTSevere Thunderstorm WatchSPC9 hr
Jun 26, 5:34 PM MDTSpecial Weather StatementCYS26 min
Jun 26, 5:52 PM MDTMesoscale DiscussionSPC113 min
Jun 26, 6:04 PM MDTSpecial Weather StatementCYS26 min
Jun 26, 6:34 PM MDTSpecial Weather StatementCYS41 min
Jun 26, 7:22 PM MDTSpecial Weather StatementCYS23 min
Jun 26, 7:40 PM MDTSevere Thunderstorm WarningCYS35 min
Jun 27, 3:14 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 27, 6:10 PM MDTMesoscale DiscussionSPC95 min
Jun 28, 12:43 PM MDTFire Weather WatchCYS25 hr
Jun 29, 3:22 AM MDTRed Flag WarningCYS18 hr
Jun 30, 12:07 AM MDTRed Flag WarningCYS19 hr
Jun 30, 6:14 PM MDTMesoscale DiscussionSPC2 hr
Jun 30, 7:42 PM MDTSevere Thunderstorm WarningCYS48 min
Jun 30, 8:25 PM MDTSevere Thunderstorm WarningCYS35 min
Jul 2, 1:42 AM MDTSpecial Weather StatementCYS33 min
Jul 2, 2:34 AM MDTSevere Thunderstorm WarningCYS41 min
Jul 3, 3:41 PM MDTMesoscale DiscussionSPC2 hr
Jul 4, 3:13 PM MDTMesoscale DiscussionSPC62 min
Jul 4, 4:42 PM MDTSpecial Weather StatementCYS33 min
Jul 4, 5:18 PM MDTSpecial Weather StatementCYS42 min
Jul 7, 4:57 PM MDTSpecial Weather StatementCYS48 min
Jul 7, 5:42 PM MDTSpecial Weather StatementCYS48 min
Jul 8, 1:03 PM MDTMesoscale DiscussionSPC117 min
Jul 8, 1:27 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 8, 8:12 PM MDTSpecial Weather StatementCYS33 min
Jul 8, 8:46 PM MDTSpecial Weather StatementCYS44 min
Jul 8, 8:54 PM MDTSpecial Weather StatementCYS36 min
Jul 9, 1:39 PM MDTMesoscale DiscussionSPC2 hr
Jul 9, 3:42 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 9, 4:54 PM MDTSpecial Weather StatementCYS36 min
Jul 9, 5:56 PM MDTSpecial Weather StatementCYS34 min
Jul 10, 2:30 AM MDTHeat AdvisoryCYS6 days
Jul 11, 1:33 AM MDTRed Flag WarningCYS5 days
Jul 22, 7:44 AM MDTFlood WatchCYS40 hr
Jul 24, 1:05 AM MDTHeat AdvisoryCYS68 hr
Jul 28, 11:57 AM MDTMesoscale DiscussionSPC2 hr
Jul 28, 1:07 PM MDTSevere Thunderstorm WatchSPC9 hr
Jul 28, 2:09 PM MDTSpecial Weather StatementCYS36 min
Jul 28, 2:27 PM MDTSevere Thunderstorm WarningCYS48 min
Jul 28, 2:35 PM MDTMesoscale DiscussionSPC115 min
Jul 28, 2:46 PM MDTSpecial Weather StatementCYS29 min
Jul 28, 4:53 PM MDTSpecial Weather StatementCYS37 min
Jul 28, 5:02 PM MDTMesoscale DiscussionSPC88 min
Jul 28, 5:41 PM MDTSpecial Weather StatementCYS34 min
Jul 28, 6:28 PM MDTSpecial Weather StatementCYS32 min
Jul 29, 5:52 PM MDTSpecial Weather StatementCYS23 min
Jul 31, 12:58 PM MDTHeat AdvisoryCYS56 hr
Aug 1, 12:04 PM MDTRed Flag WarningCYS57 hr
Aug 2, 11:51 AM MDTRed Flag WarningCYS33 hr
Aug 9, 4:41 PM MDTMesoscale DiscussionSPC2 hr
Aug 9, 6:05 PM MDTSevere Thunderstorm WatchSPC5 hr
Aug 9, 6:47 PM MDTSpecial Weather StatementCYS28 min
Aug 9, 7:00 PM MDTMesoscale DiscussionSPC2 hr
Aug 9, 7:14 PM MDTSevere Thunderstorm WarningCYS61 min
Aug 9, 8:14 PM MDTSpecial Weather StatementCYS31 min
Aug 10, 2:51 PM MDTMesoscale DiscussionSPC2 hr
Aug 10, 3:44 PM MDTSevere Thunderstorm WatchSPC5 hr
Aug 10, 5:06 PM MDTSevere Thunderstorm WarningCYS39 min
Aug 10, 6:31 PM MDTMesoscale DiscussionSPC119 min
Aug 12, 1:33 PM MDTMesoscale DiscussionSPC117 min
Aug 12, 2:32 PM MDTSevere Thunderstorm WatchSPC6 hr
Aug 12, 6:06 PM MDTMesoscale DiscussionSPC114 min
Aug 13, 2:42 AM MDTFlood WatchCYS19 hr
Aug 13, 2:41 PM MDTMesoscale DiscussionSPC2 hr
Aug 14, 11:16 AM MDTFlood WatchCYS11 hr
Aug 14, 4:12 PM MDTSevere Thunderstorm WarningCYS63 min
Aug 14, 5:09 PM MDTSpecial Weather StatementCYS51 min
Aug 14, 6:27 PM MDTAreal Flood AdvisoryCYS2 hr
Aug 15, 1:12 AM MDTFlood WatchCYS21 hr
Aug 15, 1:28 PM MDTMesoscale DiscussionSPC2 hr
Aug 15, 2:04 PM MDTSevere Thunderstorm WatchSPC7 hr
Aug 15, 3:55 PM MDTSevere Thunderstorm WarningCYS50 min
Aug 15, 5:08 PM MDTMesoscale DiscussionSPC2 hr
Aug 16, 2:06 PM MDTSevere Thunderstorm WatchSPC7 hr
Aug 16, 6:11 PM MDTSevere Thunderstorm WarningCYS49 min
Aug 16, 6:55 PM MDTSevere Thunderstorm WarningCYS50 min
Aug 16, 7:08 PM MDTAreal Flood AdvisoryCYS3 hr
Aug 16, 7:21 PM MDTSevere Thunderstorm WarningCYS39 min
Aug 16, 7:43 PM MDTSevere Thunderstorm WarningCYS14 min
Aug 17, 4:29 PM MDTMesoscale DiscussionSPC61 min
Aug 21, 3:38 PM MDTMesoscale DiscussionSPC3 hr
Aug 21, 4:48 PM MDTSevere Thunderstorm WatchSPC6 hr
Aug 21, 7:32 PM MDTMesoscale DiscussionSPC88 min
Aug 21, 7:34 PM MDTSevere Thunderstorm Warning Destructive damage threatCYS41 min
Aug 21, 7:51 PM MDTTornado WarningCYS39 min
Aug 21, 8:11 PM MDTSevere Thunderstorm Warning Destructive damage threatCYS49 min
Aug 21, 8:19 PM MDTTornado WarningCYS41 min
Aug 21, 8:37 PM MDTSevere Thunderstorm Warning Considerable damage threatCYS53 min
Aug 21, 8:42 PM MDTAreal Flood AdvisoryCYS2 hr
Aug 21, 8:54 PM MDTSevere Thunderstorm Warning Considerable damage threatCYS51 min
Aug 22, 6:32 PM MDTSevere Thunderstorm WarningCYS43 min
Aug 22, 7:08 PM MDTSevere Thunderstorm WarningCYS52 min
Aug 25, 2:53 PM MDTMesoscale DiscussionSPC2 hr
Aug 25, 4:40 PM MDTSevere Thunderstorm WarningCYS50 min
Aug 25, 5:25 PM MDTSpecial Weather StatementCYS35 min
Aug 25, 6:11 PM MDTSpecial Weather StatementCYS34 min
Aug 25, 6:25 PM MDTSevere Thunderstorm WarningCYS34 min
Aug 26, 3:01 AM MDTSpecial Weather StatementCYS29 min
Aug 29, 1:26 PM MDTMesoscale DiscussionSPC2 hr
Aug 30, 4:18 PM MDTSpecial Weather StatementCYS42 min
Sep 5, 2:34 PM MDTMesoscale DiscussionSPC116 min
Sep 5, 5:01 PM MDTSevere Thunderstorm WatchSPC4 hr
Sep 5, 5:35 PM MDTSpecial Weather StatementCYS25 min
Sep 5, 6:44 PM MDTMesoscale DiscussionSPC2 hr
Sep 5, 7:15 PM MDTSpecial Weather StatementCYS30 min
Sep 5, 7:55 PM MDTSpecial Weather StatementCYS50 min
Sep 5, 9:19 PM MDTSevere Thunderstorm WarningCYS56 min
Sep 5, 10:05 PM MDTSpecial Weather StatementCYS25 min
Sep 5, 11:59 PM MDTSpecial Weather StatementCYS31 min
Sep 6, 12:02 AM MDTSpecial Weather StatementCYS28 min
Sep 7, 7:13 PM MDTSpecial Weather StatementCYS47 min
Sep 10, 12:12 PM MDTRed Flag WarningCYS31 hr
Sep 13, 12:57 PM MDTRed Flag WarningCYS31 hr
Sep 17, 4:11 PM MDTMesoscale DiscussionSPC3 hr
Sep 17, 5:18 PM MDTSpecial Weather StatementCYS27 min
Sep 17, 7:27 PM MDTAreal Flood AdvisoryCYS2 hr
Sep 19, 7:45 PM MDTSpecial Weather StatementCYS45 min
Sep 19, 9:14 PM MDTSpecial Weather StatementCYS46 min
Sep 20, 5:56 PM MDTSpecial Weather StatementCYS49 min
Sep 20, 6:10 PM MDTSevere Thunderstorm WarningCYS29 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.