Alert archive / Utah / Duchesne County

Weather alerts in Duchesne County, Utah, 2023

84 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Duchesne County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts
84
Warnings
22
Watches
14
Advisories
31
Busiest month
March20 alerts
Busiest day
July 4, 20234 alerts

Over time

By month

Warning verification

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

Duchesne County, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings3233%333%15 min
Flash flood warnings6183%333%66 min

Each office's whole area, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Salt Lake City, UT: tornado warnings010%
NWS Salt Lake City, UT: severe thunderstorm warnings1003862%24538%22 min
NWS Salt Lake City, UT: flash flood warnings753159%5564%72 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 4, 2:41 AM MSTDense Fog AdvisorySLC8 hr
Jan 5, 3:28 AM MSTWinter Storm WarningSLC35 hr
Jan 8, 1:34 PM MSTWinter Weather AdvisorySLC3 days
Jan 9, 2:33 PM MSTWinter Storm WarningSLC49 hr
Jan 13, 1:30 PM MSTWinter Storm WarningSLC58 hr
Jan 13, 1:30 PM MSTWinter Weather AdvisorySLC58 hr
Jan 15, 2:54 PM MSTWinter Weather AdvisorySLC50 hr
Jan 17, 4:59 PM MSTWinter Weather AdvisorySLC11 hr
Jan 28, 2:11 PM MSTWinter Weather AdvisorySLC53 hr
Feb 4, 2:56 PM MSTWinter Weather AdvisorySLC50 hr
Feb 8, 3:29 AM MSTWind AdvisorySLC24 hr
Feb 19, 3:18 AM MSTWinter Storm WatchSLC24 hr
Feb 20, 3:02 AM MSTWinter Storm WarningSLC4 days
Feb 22, 2:25 PM MSTWinter Weather AdvisorySLC47 hr
Feb 24, 2:03 PM MSTWinter Weather AdvisorySLC6 days
Feb 25, 10:49 PM MSTWinter Storm WatchSLC15 hr
Feb 26, 3:38 AM MSTWinter Storm WarningSLC4 days
Mar 3, 1:33 PM MSTWinter Weather AdvisorySLC45 hr
Mar 5, 2:12 PM MSTWinter Weather AdvisorySLC21 hr
Mar 8, 1:34 PM MSTWinter Weather AdvisorySLC15 hr
Mar 9, 5:47 AM MSTWinter Storm WatchSLC8 hr
Mar 9, 2:08 PM MSTWinter Storm WarningSLC49 hr
Mar 10, 2:11 AM MSTWinter Weather AdvisorySLC25 hr
Mar 12, 3:01 PM MDTWinter Storm WatchSLC12 hr
Mar 13, 2:40 AM MDTWinter Storm WarningSLC70 hr
Mar 13, 2:25 PM MDTWinter Weather AdvisorySLC55 hr
Mar 14, 1:55 AM MDTDense Fog AdvisorySLC7 hr
Mar 18, 1:22 PM MDTWinter Weather AdvisorySLC13 hr
Mar 19, 2:45 AM MDTWinter Storm WarningSLC48 hr
Mar 19, 1:13 PM MDTWinter Storm WatchSLC26 hr
Mar 20, 2:47 PM MDTWinter Storm WarningSLC61 hr
Mar 20, 2:47 PM MDTWinter Weather AdvisorySLC61 hr
Mar 23, 3:30 PM MDTWinter Weather AdvisorySLC45 hr
Mar 24, 1:05 PM MDTSpecial Weather StatementSLC40 min
Mar 28, 2:28 PM MDTWinter Storm WatchSLC24 hr
Mar 29, 2:46 PM MDTWinter Weather AdvisorySLC54 hr
Mar 31, 2:18 PM MDTWinter Storm WatchSLC38 hr
Apr 1, 3:54 PM MDTWinter Storm WarningSLC4 days
Apr 17, 2:56 PM MDTWind AdvisorySLC29 hr
Apr 21, 8:28 AM MDTWinter Weather AdvisorySLC19 hr
Apr 27, 2:43 AM MDTWind AdvisorySLC19 hr
Apr 29, 12:23 PM MDTFlood WatchSLC27 days
May 22, 2:17 PM MDTFlash Flood Warning Considerable damage threatSLC3 hr
May 24, 2:05 PM MDTSevere Thunderstorm WarningSLC40 min
May 24, 2:57 PM MDTSpecial Weather StatementSLC33 min
May 25, 9:31 AM MDTRiver Flood WatchSLC5 days
May 25, 2:37 PM MDTSpecial Weather StatementSLC23 min
May 25, 2:42 PM MDTSpecial Weather StatementSLC33 min
May 26, 1:10 PM MDTSpecial Weather StatementSLC50 min
May 26, 2:08 PM MDTSpecial Weather StatementSLC37 min
Jun 11, 1:44 PM MDTFlash Flood Warning Considerable damage threatSLC3 hr
Jul 3, 1:17 PM MDTMesoscale DiscussionSPC118 min
Jul 3, 6:24 PM MDTSevere Thunderstorm WarningSLC36 min
Jul 3, 6:59 PM MDTSevere Thunderstorm WarningSLC46 min
Jul 4, 12:59 PM MDTSpecial Weather StatementSLC31 min
Jul 4, 1:39 PM MDTSpecial Weather StatementSLC36 min
Jul 13, 3:05 PM MDTHeat AdvisorySLC4 days
Jul 26, 4:50 PM MDTSpecial Weather StatementSLC40 min
Aug 1, 4:16 PM MDTFlash Flood Warning Considerable damage threatSLC3 hr
Aug 2, 7:40 AM MDTFlood WatchSLC31 hr
Aug 2, 1:13 PM MDTSpecial Weather StatementSLC17 min
Aug 2, 4:30 PM MDTSpecial Weather StatementSLC45 min
Aug 17, 2:06 PM MDTFlash Flood Warning Considerable damage threatSLC4 hr
Aug 18, 1:23 PM MDTFlood WatchSLC35 hr
Aug 18, 4:56 PM MDTSpecial Weather StatementSLC34 min
Aug 21, 12:26 PM MDTMesoscale DiscussionSPC2 hr
Aug 22, 5:14 AM MDTSpecial Weather StatementSLC46 min
Aug 22, 12:40 PM MDTMesoscale DiscussionSPC2 hr
Aug 26, 3:39 PM MDTFlash Flood Warning Considerable damage threatSLC3 hr
Sep 2, 12:02 PM MDTFlood WatchSLC39 hr
Sep 3, 6:47 PM MDTAreal Flood AdvisorySLC118 min
Sep 18, 2:50 PM MDTFlash Flood Warning Considerable damage threatSLC3 hr
Sep 20, 8:02 PM MDTSpecial Weather StatementSLC28 min
Oct 1, 8:59 AM MDTWinter Weather AdvisorySLC37 hr
Oct 10, 2:32 AM MDTFreeze WatchSLC24 hr
Oct 10, 2:39 AM MDTWinter Weather AdvisorySLC57 hr
Oct 11, 2:49 AM MDTFreeze WarningSLC54 hr
Oct 25, 2:20 AM MDTWinter Weather AdvisorySLC38 hr
Nov 17, 1:35 PM MSTWinter Storm WatchSLC25 hr
Nov 18, 2:18 PM MSTWinter Storm WarningSLC37 hr
Nov 22, 2:01 AM MSTWinter Weather AdvisorySLC3 days
Nov 30, 2:30 PM MSTWinter Storm WarningSLC4 days
Nov 30, 2:30 PM MSTWinter Weather AdvisorySLC69 hr
Dec 7, 2:11 PM MSTWinter Weather AdvisorySLC30 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 archive20222024

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.