Alert archive / Colorado / Moffat County

Weather alerts in Moffat County, Colorado, 2013

115 weather alerts in 2013, 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 2013. Tap one for its archive.

Alerts
115
Warnings
33
Watches
25
Advisories
49
Busiest month
September22 alerts
Busiest day
September 17, 20137 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, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings6183%0
Flash flood warnings010%

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Grand Junction, CO: tornado warnings010%
NWS Grand Junction, CO: severe thunderstorm warnings311552%4961%22 min
NWS Grand Junction, CO: flash flood warnings592066%9931%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 9, 5:37 AM MSTWinter Storm WatchGJT18 hr
Jan 9, 11:14 PM MSTWinter Weather AdvisoryGJT55 hr
Jan 25, 4:59 AM MSTWinter Weather AdvisoryGJT58 hr
Jan 26, 3:16 PM MSTWinter Storm WatchGJT24 hr
Jan 27, 5:30 AM MSTWinter Storm WarningGJT5 days
Jan 27, 2:52 PM MSTWinter Weather AdvisoryGJT38 hr
Feb 7, 3:43 AM MSTDense Fog AdvisoryGJT6 hr
Feb 7, 4:49 AM MSTWinter Storm WatchGJT17 hr
Feb 7, 9:59 PM MSTWinter Storm WarningGJT4 days
Feb 7, 9:59 PM MSTWinter Weather AdvisoryGJT4 days
Feb 12, 2:59 PM MSTWinter Weather AdvisoryGJT69 hr
Feb 19, 3:05 PM MSTWinter Weather AdvisoryGJT51 hr
Feb 22, 3:07 PM MSTWinter Weather AdvisoryGJT53 hr
Feb 25, 3:09 PM MSTWinter Weather AdvisoryGJT37 hr
Mar 2, 2:55 PM MSTWinter Weather AdvisoryGJT51 hr
Mar 4, 2:15 AM MSTWinter Storm WarningGJT16 hr
Mar 6, 3:22 AM MSTWinter Storm WatchGJT45 hr
Mar 7, 1:08 AM MSTWinter Storm WarningGJT68 hr
Mar 8, 12:04 AM MSTWinter Weather AdvisoryGJT42 hr
Mar 11, 10:30 AM MDTWinter Weather AdvisoryGJT23 hr
Mar 16, 7:05 PM MDTWinter Weather AdvisoryGJT23 hr
Mar 17, 3:34 AM MDTWind AdvisoryGJT15 hr
Mar 20, 3:51 AM MDTWinter Weather AdvisoryGJT36 hr
Mar 22, 4:29 AM MDTWinter Weather AdvisoryGJT38 hr
Mar 22, 11:51 AM MDTWinter Storm WarningGJT30 hr
Apr 6, 7:34 PM MDTBlizzard WatchGJT26 hr
Apr 6, 7:34 PM MDTWinter Storm WatchGJT26 hr
Apr 7, 9:34 PM MDTBlizzard WarningGJT48 hr
Apr 7, 9:34 PM MDTWinter Storm WarningGJT48 hr
Apr 11, 3:21 AM MDTWinter Weather AdvisoryGJT15 hr
Apr 12, 3:17 PM MDTWinter Weather AdvisoryGJT42 hr
Apr 13, 6:12 AM MDTWind AdvisoryGJT15 hr
Apr 14, 5:03 AM MDTWinter Storm WatchGJT10 hr
Apr 14, 2:37 PM MDTWinter Weather AdvisoryGJT3 days
Apr 15, 4:59 AM MDTWinter Storm WatchGJT33 hr
Apr 15, 8:10 AM MDTWinter Storm WarningGJT61 hr
Apr 19, 4:11 AM MDTWinter Weather AdvisoryGJT44 hr
Apr 21, 3:41 PM MDTWinter Weather AdvisoryGJT44 hr
Apr 30, 2:28 PM MDTWinter Weather AdvisoryGJT29 hr
May 1, 11:59 AM MDTFreeze WarningGJT19 hr
May 2, 12:39 PM MDTFreeze WarningGJT20 hr
May 7, 2:12 PM MDTWinter Weather AdvisoryGJT52 hr
May 9, 8:12 AM MDTDense Fog AdvisoryGJT108 min
May 19, 3:12 PM MDTWinter Weather AdvisoryGJT21 hr
May 23, 9:33 AM MDTWind AdvisoryGJT11 hr
Jun 12, 5:04 AM MDTRed Flag WarningGJT39 hr
Jun 12, 3:02 PM MDTWind AdvisoryGJT29 hr
Jun 16, 2:34 PM MDTFire Weather WatchGJT25 hr
Jun 17, 3:20 PM MDTRed Flag WarningGJT3 days
Jun 19, 3:18 PM MDTFire Weather WatchGJT14 hr
Jun 20, 5:33 AM MDTRed Flag WarningGJT39 hr
Jun 21, 3:10 PM MDTRed Flag WarningGJT30 hr
Jun 22, 3:40 PM MDTFire Weather WatchGJT23 hr
Jun 23, 2:21 PM MDTRed Flag WarningGJT31 hr
Jun 29, 3:30 PM MDTRed Flag WarningGJT30 hr
Jul 19, 8:26 AM MDTFlash Flood WatchGJT12 hr
Jul 28, 11:23 PM MDTFlash Flood WatchGJT22 hr
Aug 23, 2:18 PM MDTSevere Thunderstorm WarningGJT42 min
Aug 23, 2:59 PM MDTSpecial Weather StatementGJT31 min
Aug 23, 3:35 PM MDTFlood WatchGJT3 days
Aug 23, 4:11 PM MDTMesoscale DiscussionSPC2 hr
Sep 8, 4:02 AM MDTFlash Flood WatchGJT68 hr
Sep 12, 2:12 PM MDTSpecial Weather StatementGJT48 min
Sep 12, 2:45 PM MDTSpecial Weather StatementGJT30 min
Sep 17, 1:09 PM MDTSpecial Weather StatementGJT21 min
Sep 17, 1:30 PM MDTSevere Thunderstorm WatchSPC8 hr
Sep 17, 3:44 PM MDTMesoscale DiscussionSPC91 min
Sep 17, 4:33 PM MDTSevere Thunderstorm WarningGJT42 min
Sep 17, 5:11 PM MDTSevere Thunderstorm WarningGJT34 min
Sep 17, 5:34 PM MDTAreal Flood AdvisoryGJT6 hr
Sep 17, 5:43 PM MDTSevere Thunderstorm WarningGJT47 min
Sep 17, 6:16 PM MDTMesoscale DiscussionSPC89 min
Sep 17, 6:28 PM MDTSevere Thunderstorm WarningGJT47 min
Sep 17, 7:15 PM MDTSevere Thunderstorm WarningGJT45 min
Sep 18, 3:58 PM MDTFreeze WatchGJT23 hr
Sep 19, 2:30 PM MDTFreeze WarningGJT18 hr
Sep 22, 9:46 AM MDTMesoscale DiscussionSPC44 min
Sep 23, 4:27 AM MDTFreeze WatchGJT10 hr
Sep 23, 2:26 PM MDTFreeze WarningGJT18 hr
Sep 24, 2:36 PM MDTWind AdvisoryGJT30 hr
Sep 26, 4:33 AM MDTFreeze WatchGJT33 hr
Sep 26, 2:50 PM MDTWinter Weather AdvisoryGJT33 hr
Sep 27, 1:23 PM MDTFreeze WarningGJT20 hr
Oct 2, 4:09 AM MDTWinter Storm WatchGJT11 hr
Oct 2, 2:30 PM MDTFreeze WarningGJT44 hr
Oct 2, 3:00 PM MDTWinter Storm WarningGJT51 hr
Oct 2, 3:00 PM MDTWinter Weather AdvisoryGJT51 hr
Oct 8, 2:57 PM MDTWinter Storm WatchGJT39 hr
Oct 9, 4:33 AM MDTWinter Storm WarningGJT59 hr
Oct 12, 10:54 AM MDTWinter Storm WatchGJT17 hr
Oct 13, 4:07 AM MDTWinter Storm WarningGJT44 hr
Oct 17, 10:39 AM MDTWinter Weather AdvisoryGJT22 hr
Oct 27, 3:05 PM MDTWinter Storm WatchGJT23 hr
Oct 27, 9:35 PM MDTWind AdvisoryGJT21 hr
Oct 28, 3:24 AM MDTWinter Storm WarningGJT48 hr
Oct 28, 2:29 PM MDTWinter Weather AdvisoryGJT40 hr
Oct 30, 9:55 AM MDTWinter Weather AdvisoryGJT11 hr
Oct 31, 12:16 PM MDTWinter Weather AdvisoryGJT21 hr
Nov 4, 3:45 AM MSTWinter Weather AdvisoryGJT32 hr
Nov 6, 10:36 AM MSTWinter Weather AdvisoryGJT5 hr
Nov 14, 3:38 PM MSTWinter Weather AdvisoryGJT67 hr
Nov 15, 4:40 AM MSTWinter Storm WarningGJT54 hr
Nov 16, 3:00 AM MSTWind AdvisoryGJT14 hr
Nov 20, 3:24 PM MSTWinter Weather AdvisoryGJT72 hr
Nov 27, 1:13 AM MSTDense Fog AdvisoryGJT9 hr
Nov 30, 4:48 AM MSTDense Fog AdvisoryGJT7 hr
Dec 1, 4:03 PM MSTWinter Storm WatchGJT46 hr
Dec 2, 5:04 AM MSTWinter Storm WarningGJT66 hr
Dec 5, 9:12 PM MSTWinter Storm WatchGJT31 hr
Dec 6, 2:55 PM MSTWinter Weather AdvisoryGJT63 hr
Dec 20, 8:11 AM MSTWinter Weather AdvisoryGJT16 hr
Dec 20, 3:11 PM MSTWinter Weather AdvisoryGJT69 hr
Dec 23, 8:52 AM MSTWinter Storm WarningGJT33 hr
Dec 23, 12:03 PM MSTWinter Weather AdvisoryGJT30 hr
Dec 30, 3:27 PM MSTWinter Weather AdvisoryGJT51 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 archive20122014

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.