Alert archive / Wyoming / Park County

Weather alerts in Park County, Wyoming, 2025

92 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Park County and its neighbors

Each county as a circle sized by its count in 2025. Tap one for its archive.

Alerts
92
Warnings
26
Watches
20
Advisories
25
Busiest month
July15 alerts
Busiest day
May 11, 20256 alerts

Over time

By month

Warning verification

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

Park County, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings5340%933%9 min
Flash flood warnings00

Each office's whole area, 2025

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Riverton, WY: tornado warnings10100%10%
NWS Riverton, WY: severe thunderstorm warnings1082181%10426%15 min
NWS Riverton, WY: flash flood warnings10100%0

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, 6:56 PM MSTWinter Weather AdvisoryRIW18 hr
Jan 18, 8:07 PM MSTCold Weather AdvisoryRIW62 hr
Jan 20, 1:39 PM MSTHigh Wind WatchRIW6 hr
Jan 20, 1:39 PM MSTHigh Wind WarningRIW27 hr
Jan 29, 1:15 PM MSTWinter Storm WatchRIW24 hr
Jan 30, 12:15 PM MSTHigh Wind WatchRIW24 hr
Jan 30, 12:48 PM MSTWinter Storm WarningRIW4 days
Feb 1, 12:55 PM MSTWinter Weather AdvisoryRIW52 hr
Feb 4, 2:25 AM MSTHigh Wind WatchRIW10 hr
Feb 4, 12:52 PM MSTHigh Wind WarningRIW31 hr
Feb 6, 1:52 AM MSTWinter Weather AdvisoryRIW43 hr
Feb 11, 1:35 AM MSTCold Weather AdvisoryRIW56 hr
Feb 12, 1:42 AM MSTWinter Storm WatchRIW11 hr
Feb 12, 12:29 PM MSTWinter Weather AdvisoryRIW71 hr
Feb 15, 1:19 AM MSTWinter Storm WatchRIW13 hr
Feb 15, 2:26 PM MSTWinter Storm WarningRIW3 days
Feb 15, 2:26 PM MSTWinter Weather AdvisoryRIW3 days
Feb 22, 1:25 AM MSTHigh Wind WatchRIW10 hr
Feb 22, 11:38 AM MSTHigh Wind WarningRIW53 hr
Feb 22, 11:47 AM MSTWinter Weather AdvisoryRIW43 hr
Mar 4, 12:58 AM MSTWinter Storm WatchRIW24 hr
Mar 5, 1:19 AM MSTWinter Storm WarningRIW52 hr
Mar 5, 1:19 AM MSTWinter Weather AdvisoryRIW52 hr
Mar 12, 1:19 AM MDTWinter Weather AdvisoryRIW62 hr
Mar 14, 2:20 PM MDTHigh Wind WatchRIW23 hr
Mar 15, 1:17 PM MDTHigh Wind WarningRIW47 hr
Mar 15, 11:11 PM MDTWinter Weather AdvisoryRIW19 hr
Mar 17, 2:54 AM MDTWinter Storm WarningRIW44 hr
Mar 17, 2:54 AM MDTWinter Weather AdvisoryRIW51 hr
Mar 20, 1:09 PM MDTWinter Weather AdvisoryRIW53 hr
Mar 28, 1:16 PM MDTWinter Weather AdvisoryRIW53 hr
Mar 31, 12:52 AM MDTWinter Weather AdvisoryRIW65 hr
Apr 15, 1:43 AM MDTWinter Storm WatchRIW25 hr
Apr 16, 2:31 AM MDTWinter Storm WarningRIW57 hr
Apr 16, 2:31 AM MDTWinter Weather AdvisoryRIW57 hr
Apr 27, 1:23 AM MDTWinter Weather AdvisoryRIW41 hr
Apr 27, 3:54 PM MDTSevere Thunderstorm WarningRIW21 min
May 11, 1:12 PM MDTSevere Thunderstorm WatchSPC7 hr
May 11, 4:34 PM MDTMesoscale DiscussionSPC116 min
May 11, 4:56 PM MDTSpecial Weather StatementRIW34 min
May 11, 5:23 PM MDTSpecial Weather StatementRIW22 min
May 11, 5:29 PM MDTSevere Thunderstorm WarningRIW31 min
May 11, 5:50 PM MDTSevere Thunderstorm WarningRIW25 min
May 12, 2:26 AM MDTWinter Storm WatchRIW23 hr
May 13, 1:30 AM MDTWinter Weather AdvisoryRIW41 hr
May 15, 3:05 PM MDTSpecial Weather StatementRIW25 min
May 26, 5:26 PM MDTSpecial Weather StatementRIW34 min
Jun 1, 5:39 PM MDTSevere Thunderstorm WarningRIW22 min
Jun 11, 1:57 PM MDTMesoscale DiscussionSPC63 min
Jun 11, 3:00 PM MDTSevere Thunderstorm WatchSPC5 hr
Jun 11, 4:33 PM MDTSpecial Weather StatementRIW42 min
Jun 11, 5:13 PM MDTSpecial Weather StatementRIW47 min
Jun 16, 4:52 PM MDTMesoscale DiscussionSPC113 min
Jul 5, 11:42 AM MDTSpecial Weather StatementRIW33 min
Jul 14, 2:45 PM MDTSpecial Weather StatementRIW30 min
Jul 15, 2:12 PM MDTMesoscale DiscussionSPC2 hr
Jul 15, 4:28 PM MDTSpecial Weather StatementRIW32 min
Jul 15, 4:58 PM MDTSpecial Weather StatementRIW32 min
Jul 17, 1:27 AM MDTRed Flag WarningRIW19 hr
Jul 18, 3:47 PM MDTSevere Thunderstorm WarningRIW28 min
Jul 29, 1:33 PM MDTMesoscale DiscussionSPC117 min
Jul 29, 2:28 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 30, 2:31 PM MDTMesoscale DiscussionSPC119 min
Jul 30, 2:49 PM MDTSpecial Weather StatementRIW26 min
Jul 30, 3:53 PM MDTSpecial Weather StatementRIW37 min
Jul 30, 4:30 PM MDTSpecial Weather StatementRIW30 min
Jul 30, 4:51 PM MDTSpecial Weather StatementRIW24 min
Jul 31, 2:21 PM MDTSpecial Weather StatementRIW24 min
Aug 12, 1:14 PM MDTRed Flag WarningRIW55 hr
Oct 2, 1:44 PM MDTWinter Storm WatchRIW23 hr
Oct 3, 1:02 PM MDTWinter Weather AdvisoryRIW58 hr
Oct 4, 12:38 PM MDTFreeze WatchRIW21 hr
Oct 4, 7:03 PM MDTAreal Flood AdvisoryRIW4 hr
Oct 5, 2:14 AM MDTFreeze WarningRIW32 hr
Oct 5, 9:58 AM MDTFreeze WatchRIW27 hr
Oct 6, 1:26 PM MDTFreeze WarningRIW20 hr
Oct 11, 1:06 AM MDTFreeze WatchRIW36 hr
Oct 12, 12:57 PM MDTFreeze WarningRIW20 hr
Oct 14, 1:06 PM MDTWinter Weather AdvisoryRIW55 hr
Oct 18, 1:03 PM MDTWinter Weather AdvisoryRIW34 hr
Oct 24, 1:42 PM MDTWinter Storm WatchRIW11 hr
Oct 25, 1:07 AM MDTWinter Storm WarningRIW65 hr
Oct 25, 1:19 PM MDTWinter Weather AdvisoryRIW53 hr
Dec 4, 2:37 AM MSTWinter Weather AdvisoryRIW59 hr
Dec 8, 2:02 AM MSTWinter Storm WarningRIW58 hr
Dec 15, 12:58 PM MSTWinter Storm WatchRIW23 hr
Dec 15, 1:19 PM MSTHigh Wind WarningRIW64 hr
Dec 16, 11:31 AM MSTWinter Storm WarningRIW35 hr
Dec 18, 1:24 AM MSTWinter Storm WarningRIW52 hr
Dec 18, 11:29 AM MSTHigh Wind WarningRIW36 hr
Dec 20, 12:17 PM MSTWinter Storm WarningRIW53 hr
Dec 25, 12:21 PM MSTWinter Weather AdvisoryRIW53 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 archive20242026

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.