Alert archive / Colorado / Moffat County

Weather alerts in Moffat County, Colorado, 2018

132 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Moffat County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
132
Warnings
44
Watches
31
Advisories
49
Busiest month
June23 alerts
Busiest day
October 4, 20187 alerts

Over time

By month

Warning verification

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

Moffat County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings5180%20%
Flash flood warnings00

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Grand Junction, CO: tornado warnings010%
NWS Grand Junction, CO: severe thunderstorm warnings29872%4122%21 min
NWS Grand Junction, CO: flash flood warnings321166%3145%95 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 5, 2:55 PM MSTWinter Weather AdvisoryGJT42 hr
Jan 8, 2:52 PM MSTWinter Storm WatchGJT6 hr
Jan 8, 9:00 PM MSTWinter Storm WarningGJT48 hr
Jan 11, 3:30 PM MSTWinter Weather AdvisoryGJT27 hr
Jan 19, 2:54 PM MSTWinter Storm WatchGJT6 hr
Jan 19, 2:54 PM MSTWinter Weather AdvisoryGJT54 hr
Jan 25, 3:30 PM MSTWinter Weather AdvisoryGJT20 hr
Feb 2, 6:41 PM MSTWinter Weather AdvisoryGJT40 hr
Feb 4, 2:17 PM MSTWinter Weather AdvisoryGJT46 hr
Feb 9, 2:10 PM MSTWinter Weather AdvisoryGJT33 hr
Feb 11, 5:12 AM MSTWinter Weather AdvisoryGJT54 hr
Feb 12, 1:05 PM MSTWinter Weather AdvisoryGJT22 hr
Feb 13, 9:52 PM MSTWinter Storm WatchGJT6 hr
Feb 14, 3:39 AM MSTWinter Storm WarningGJT44 hr
Feb 14, 3:39 AM MSTWinter Weather AdvisoryGJT44 hr
Feb 17, 4:07 AM MSTWinter Storm WatchGJT24 hr
Feb 17, 2:12 PM MSTWinter Storm WarningGJT66 hr
Feb 17, 2:12 PM MSTWinter Weather AdvisoryGJT66 hr
Feb 17, 2:13 PM MSTWind AdvisoryGJT27 hr
Feb 22, 3:10 PM MSTWinter Weather AdvisoryGJT45 hr
Mar 1, 1:42 PM MSTWind AdvisoryGJT28 hr
Mar 3, 1:57 AM MSTWind AdvisoryGJT16 hr
Mar 3, 3:04 AM MSTWinter Weather AdvisoryGJT49 hr
Mar 15, 3:52 AM MDTWinter Weather AdvisoryGJT24 hr
Mar 16, 9:11 PM MDTWinter Weather AdvisoryGJT63 hr
Mar 22, 4:30 AM MDTWinter Weather AdvisoryGJT38 hr
Mar 28, 4:07 AM MDTWinter Weather AdvisoryGJT15 hr
Apr 1, 2:52 PM MDTWind AdvisoryGJT33 hr
Apr 5, 2:53 AM MDTWinter Weather AdvisoryGJT48 hr
Apr 7, 4:19 AM MDTWinter Storm WarningGJT29 hr
Apr 11, 3:02 PM MDTWinter Weather AdvisoryGJT52 hr
Apr 11, 5:05 PM MDTWind AdvisoryGJT27 hr
Apr 15, 1:50 PM MDTWind AdvisoryGJT54 hr
Apr 17, 2:35 PM MDTFire Weather WatchGJT13 hr
Apr 18, 3:11 AM MDTRed Flag WarningGJT42 hr
Apr 19, 9:24 AM MDTWinter Weather AdvisoryGJT43 hr
Apr 28, 2:43 AM MDTFire Weather WatchGJT12 hr
Apr 28, 2:38 PM MDTRed Flag WarningGJT30 hr
May 1, 3:34 AM MDTWinter Weather AdvisoryGJT56 hr
May 9, 3:08 AM MDTRed Flag WarningGJT42 hr
May 11, 8:47 PM MDTWind AdvisoryGJT23 hr
May 15, 1:37 PM MDTFire Weather WatchGJT19 hr
May 16, 8:39 AM MDTRed Flag WarningGJT36 hr
May 23, 2:48 PM MDTFire Weather WatchGJT35 hr
May 25, 1:52 AM MDTRed Flag WarningGJT44 hr
May 28, 2:34 PM MDTSpecial Weather StatementGJT41 min
May 29, 2:57 PM MDTFire Weather WatchGJT24 hr
May 30, 4:30 AM MDTRed Flag WarningGJT42 hr
May 31, 4:31 AM MDTRed Flag WarningGJT41 hr
Jun 7, 4:01 AM MDTFire Weather WatchGJT24 hr
Jun 7, 2:40 PM MDTFire Weather WatchGJT20 hr
Jun 8, 4:20 AM MDTRed Flag WarningGJT41 hr
Jun 8, 10:50 AM MDTRed Flag WarningGJT59 hr
Jun 9, 9:27 PM MDTWind AdvisoryGJT23 hr
Jun 12, 3:00 PM MDTFire Weather WatchGJT12 hr
Jun 13, 3:02 AM MDTRed Flag WarningGJT42 hr
Jun 14, 3:48 AM MDTRed Flag WarningGJT41 hr
Jun 18, 2:10 AM MDTRed Flag WarningGJT18 hr
Jun 20, 4:30 AM MDTFire Weather WatchGJT11 hr
Jun 20, 3:08 PM MDTFire Weather WatchGJT23 hr
Jun 20, 3:08 PM MDTRed Flag WarningGJT29 hr
Jun 21, 2:25 PM MDTRed Flag WarningGJT31 hr
Jun 22, 4:13 AM MDTFire Weather WatchGJT11 hr
Jun 22, 3:14 PM MDTRed Flag WarningGJT30 hr
Jun 25, 2:39 PM MDTFire Weather WatchGJT24 hr
Jun 26, 4:07 AM MDTRed Flag WarningGJT16 hr
Jun 26, 2:41 PM MDTFire Weather WatchGJT14 hr
Jun 26, 2:41 PM MDTRed Flag WarningGJT24 hr
Jun 27, 4:43 AM MDTRed Flag WarningGJT41 hr
Jun 27, 2:34 PM MDTFire Weather WatchGJT13 hr
Jun 27, 2:34 PM MDTRed Flag WarningGJT5 hr
Jun 28, 3:54 AM MDTRed Flag WarningGJT41 hr
Jul 2, 2:56 PM MDTRed Flag WarningGJT29 hr
Jul 11, 6:34 PM MDTSpecial Weather StatementGJT41 min
Jul 22, 5:39 PM MDTSpecial Weather StatementGJT51 min
Jul 29, 3:04 AM MDTRed Flag WarningGJT17 hr
Aug 3, 2:58 PM MDTSpecial Weather StatementGJT47 min
Aug 3, 7:05 PM MDTSpecial Weather StatementGJT25 min
Aug 21, 4:02 AM MDTFlash Flood WatchGJT44 hr
Aug 22, 6:49 PM MDTSevere Thunderstorm WarningGJT41 min
Aug 22, 7:30 PM MDTSpecial Weather StatementGJT45 min
Aug 27, 1:35 AM MDTWind AdvisoryGJT19 hr
Aug 28, 4:30 AM MDTFire Weather WatchGJT23 hr
Aug 29, 3:31 AM MDTFire Weather WatchGJT8 hr
Aug 29, 11:42 AM MDTRed Flag WarningGJT32 hr
Sep 9, 1:56 PM MDTFire Weather WatchGJT24 hr
Sep 9, 1:56 PM MDTFire Weather WatchGJT24 hr
Sep 10, 1:38 PM MDTFire Weather WatchGJT25 hr
Sep 10, 1:38 PM MDTRed Flag WarningGJT30 hr
Sep 10, 1:38 PM MDTRed Flag WarningGJT55 hr
Sep 11, 2:32 PM MDTRed Flag WarningGJT54 hr
Sep 12, 2:17 PM MDTRed Flag WarningGJT55 hr
Sep 13, 3:51 PM MDTFire Weather WatchGJT12 hr
Sep 14, 3:31 AM MDTRed Flag WarningGJT41 hr
Sep 18, 1:30 PM MDTRed Flag WarningGJT30 hr
Sep 20, 1:51 PM MDTFreeze WarningGJT19 hr
Sep 21, 3:43 AM MDTFire Weather WatchGJT24 hr
Sep 21, 3:43 AM MDTFire Weather WatchGJT35 hr
Sep 22, 4:01 AM MDTRed Flag WarningGJT15 hr
Sep 23, 2:05 PM MDTRed Flag WarningGJT24 hr
Sep 27, 3:48 AM MDTFire Weather WatchGJT24 hr
Sep 28, 3:50 AM MDTRed Flag WarningGJT40 hr
Oct 4, 3:54 AM MDTSpecial Weather StatementGJT51 min
Oct 4, 10:05 AM MDTMesoscale DiscussionSPC115 min
Oct 4, 11:02 AM MDTSevere Thunderstorm WarningGJT28 min
Oct 4, 11:06 AM MDTSevere Thunderstorm WarningGJT39 min
Oct 4, 11:35 AM MDTSevere Thunderstorm WarningGJT25 min
Oct 4, 12:00 PM MDTSevere Thunderstorm WarningGJT45 min
Oct 4, 2:53 PM MDTAreal Flood AdvisoryGJT42 min
Oct 9, 3:23 PM MDTWinter Weather AdvisoryGJT22 hr
Oct 10, 3:28 PM MDTWinter Weather AdvisoryGJT33 hr
Oct 12, 1:29 PM MDTFreeze WatchGJT25 hr
Oct 12, 1:29 PM MDTFreeze WatchGJT47 hr
Oct 13, 2:28 PM MDTFreeze WarningGJT20 hr
Oct 13, 9:49 PM MDTWinter Weather AdvisoryGJT12 hr
Oct 24, 5:47 AM MDTDense Fog AdvisoryGJT5 hr
Nov 1, 2:28 PM MDTWinter Weather AdvisoryGJT50 hr
Nov 3, 4:12 PM MDTWinter Weather AdvisoryGJT44 hr
Nov 16, 12:01 PM MSTWinter Weather AdvisoryGJT32 hr
Nov 20, 12:49 PM MSTWinter Weather AdvisoryGJT71 hr
Nov 21, 3:16 PM MSTWinter Storm WatchGJT37 hr
Nov 22, 1:49 PM MSTWinter Storm WarningGJT61 hr
Nov 23, 4:11 AM MSTWinter Weather AdvisoryGJT43 hr
Nov 24, 9:04 AM MSTWind AdvisoryGJT10 hr
Nov 28, 3:03 PM MSTWinter Weather AdvisoryGJT69 hr
Nov 30, 3:01 AM MSTWinter Weather AdvisoryGJT37 hr
Dec 7, 6:09 PM MSTDense Fog AdvisoryGJT16 hr
Dec 12, 3:40 AM MSTWinter Weather AdvisoryGJT25 hr
Dec 12, 9:43 AM MSTWind AdvisoryGJT12 hr
Dec 18, 10:12 AM MSTWinter Weather AdvisoryGJT31 hr
Dec 21, 3:51 AM MSTWinter Weather AdvisoryGJT34 hr
Dec 23, 1:45 PM MSTWinter Weather AdvisoryGJT28 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 archive20172019

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.