Alert archive / Colorado / La Plata County

Weather alerts in La Plata County, Colorado, 2016

91 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

La Plata County and its neighbors

Each county as a circle sized by its count in 2016. Tap one for its archive.

Alerts
91
Warnings
28
Watches
27
Advisories
28
Busiest month
January13 alerts
Busiest day
January 5, 20163 alerts

Over time

By month

Warning verification

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

La Plata County, 2016

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

Each office's whole area, 2016

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Goodland, KS: tornado warnings822076%4466%15 min
NWS Goodland, KS: severe thunderstorm warnings59515873%35078%24 min
NWS Goodland, KS: flash flood warnings821878%3765%105 min
NWS Grand Junction, CO: severe thunderstorm warnings13377%1926%7 min
NWS Grand Junction, CO: flash flood warnings14193%176%95 min
NWS Pueblo, CO: tornado warnings20670%1369%20 min
NWS Pueblo, CO: severe thunderstorm warnings2939269%23983%20 min
NWS Pueblo, CO: flash flood warnings37684%2190%40 min
NWS Denver/Boulder, CO: tornado warnings30680%2060%12 min
NWS Denver/Boulder, CO: severe thunderstorm warnings2599464%23072%19 min
NWS Denver/Boulder, CO: flash flood warnings8188%333%18 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, 12:50 AM MSTWinter Weather AdvisoryGJT8 hr
Jan 5, 10:58 AM MSTWinter Storm WatchGJT5 hr
Jan 5, 3:30 PM MSTWinter Weather AdvisoryGJT46 hr
Jan 5, 9:10 PM MSTWinter Storm WarningGJT36 hr
Jan 6, 2:42 PM MSTWinter Storm WatchGJT23 hr
Jan 7, 1:31 PM MSTWinter Weather AdvisoryGJT27 hr
Jan 7, 11:15 PM MSTWinter Storm WarningGJT18 hr
Jan 11, 8:22 PM MSTDense Fog AdvisoryGJT15 hr
Jan 12, 1:14 PM MSTDense Fog AdvisoryGJT16 hr
Jan 28, 10:03 PM MSTWinter Storm WarningGJT5 days
Jan 28, 10:03 PM MSTWinter Weather AdvisoryGJT59 hr
Jan 29, 3:07 PM MSTWinter Storm WatchGJT50 hr
Jan 30, 4:27 PM MSTWinter Storm WarningGJT68 hr
Feb 17, 12:34 PM MSTWind AdvisoryGJT32 hr
Feb 18, 2:24 PM MSTHigh Wind WarningGJT10 hr
Feb 21, 3:30 PM MSTWinter Weather AdvisoryGJT51 hr
Mar 5, 5:44 PM MSTWinter Weather AdvisoryGJT47 hr
Mar 13, 11:40 PM MDTWind AdvisoryGJT23 hr
Mar 21, 4:06 AM MDTFire Weather WatchGJT9 hr
Mar 21, 1:10 PM MDTRed Flag WarningGJT32 hr
Mar 22, 3:12 AM MDTWind AdvisoryGJT18 hr
Mar 24, 3:47 AM MDTWinter Weather AdvisoryGJT62 hr
Mar 27, 4:30 AM MDTFire Weather WatchGJT10 hr
Mar 27, 2:03 PM MDTRed Flag WarningGJT27 hr
Mar 27, 8:48 PM MDTWinter Weather AdvisoryGJT60 hr
Apr 4, 2:45 PM MDTRed Flag WarningGJT29 hr
Apr 5, 4:44 AM MDTWind AdvisoryGJT15 hr
Apr 14, 3:55 AM MDTWinter Storm WatchGJT9 hr
Apr 14, 3:55 AM MDTWinter Storm WarningGJT3 days
Apr 18, 4:01 AM MDTWinter Weather AdvisoryGJT20 hr
Apr 27, 2:27 PM MDTWinter Weather AdvisoryGJT55 hr
Jun 6, 1:29 PM MDTRiver Flood AdvisoryGJT3 days
Jun 9, 2:38 PM MDTSpecial Weather StatementGJT52 min
Jun 9, 4:45 PM MDTSpecial Weather StatementGJT45 min
Jun 13, 2:21 PM MDTFire Weather WatchGJT20 hr
Jun 14, 9:51 AM MDTFire Weather WatchGJT29 hr
Jun 14, 9:51 AM MDTRed Flag WarningGJT34 hr
Jun 15, 2:42 PM MDTRed Flag WarningGJT29 hr
Jun 19, 3:00 PM MDTFire Weather WatchGJT37 hr
Jun 21, 4:00 AM MDTRed Flag WarningGJT16 hr
Jun 27, 1:57 PM MDTRed Flag WarningGJT30 hr
Jun 29, 3:14 PM MDTSpecial Weather StatementGJT31 min
Jun 30, 3:16 PM MDTFlash Flood WatchGJT30 hr
Jul 8, 5:38 AM MDTFire Weather WatchGJT16 hr
Jul 8, 9:48 PM MDTRed Flag WarningGJT50 hr
Jul 10, 2:24 PM MDTFire Weather WatchGJT5 hr
Jul 10, 7:53 PM MDTRed Flag WarningGJT24 hr
Jul 15, 3:45 AM MDTFire Weather WatchGJT11 hr
Jul 15, 2:58 PM MDTFire Weather WatchGJT24 hr
Jul 15, 2:58 PM MDTRed Flag WarningGJT30 hr
Jul 16, 6:17 PM MDTRed Flag WarningGJT27 hr
Jul 17, 12:12 PM MDTFire Weather WatchGJT10 hr
Jul 17, 9:42 PM MDTRed Flag WarningGJT24 hr
Jul 19, 7:46 PM MDTAreal Flood AdvisoryGJT3 hr
Aug 3, 3:40 AM MDTFlash Flood WatchGJT20 hr
Aug 3, 2:56 PM MDTFlash Flood WatchGJT29 hr
Aug 4, 2:25 PM MDTFlash Flood WatchGJT34 hr
Aug 4, 9:06 PM MDTSpecial Weather StatementGJT39 min
Aug 5, 2:23 PM MDTFlash Flood WatchGJT32 hr
Aug 7, 5:05 PM MDTAreal Flood AdvisoryGJT3 hr
Aug 23, 3:07 AM MDTFlash Flood WatchGJT19 hr
Aug 24, 2:58 PM MDTSpecial Weather StatementGJT47 min
Aug 24, 3:32 PM MDTSpecial Weather StatementGJT43 min
Sep 5, 4:30 AM MDTRed Flag WarningGJT16 hr
Sep 5, 1:56 PM MDTFire Weather WatchGJT14 hr
Sep 16, 1:48 PM MDTFreeze WarningGJT19 hr
Sep 22, 3:19 AM MDTHigh Wind WarningGJT20 hr
Sep 22, 3:19 AM MDTWind AdvisoryGJT20 hr
Sep 22, 1:55 PM MDTSpecial Weather StatementGJT50 min
Sep 23, 6:31 AM MDTSpecial Weather StatementGJT44 min
Oct 3, 3:22 AM MDTFreeze WatchGJT12 hr
Oct 3, 3:00 PM MDTFreeze WarningGJT18 hr
Oct 16, 2:24 AM MDTWind AdvisoryGJT31 hr
Nov 3, 3:32 PM MDTWinter Weather AdvisoryGJT56 hr
Nov 15, 3:32 PM MSTWinter Storm WatchGJT24 hr
Nov 16, 4:30 AM MSTWinter Weather AdvisoryGJT44 hr
Nov 19, 3:30 PM MSTWinter Storm WatchGJT23 hr
Nov 20, 3:55 AM MSTWinter Storm WarningGJT62 hr
Nov 25, 2:15 PM MSTWinter Storm WatchGJT14 hr
Nov 26, 4:29 AM MSTWinter Storm WarningGJT3 days
Nov 26, 4:29 AM MSTWinter Weather AdvisoryGJT3 days
Dec 12, 9:01 PM MSTDense Fog AdvisoryGJT12 hr
Dec 14, 4:02 PM MSTWinter Storm WatchGJT12 hr
Dec 15, 3:45 AM MSTWinter Storm WarningGJT55 hr
Dec 16, 9:09 AM MSTWinter Weather AdvisoryGJT7 hr
Dec 17, 11:07 AM MSTWinter Storm WarningGJT9 hr
Dec 21, 3:13 PM MSTWinter Storm WarningGJT41 hr
Dec 21, 3:13 PM MSTWinter Weather AdvisoryGJT41 hr
Dec 23, 2:53 AM MSTWinter Storm WatchGJT21 hr
Dec 23, 2:26 PM MSTWinter Storm WarningGJT50 hr
Dec 23, 11:24 PM MSTWinter Weather AdvisoryGJT49 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 archive20152017

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.