Alert archive / Colorado / La Plata County

Weather alerts in La Plata County, Colorado, 2011

116 weather alerts in 2011, 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 2011. Tap one for its archive.

Alerts
116
Warnings
42
Watches
37
Advisories
36
Busiest month
June20 alerts
Busiest day
March 20, 20114 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, 2011

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

Each office's whole area, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Goodland, KS: tornado warnings651675%2387%23 min
NWS Goodland, KS: severe thunderstorm warnings32812163%31977%27 min
NWS Goodland, KS: flash flood warnings321069%1788%105 min
NWS Pueblo, CO: tornado warnings11464%1040%13 min
NWS Pueblo, CO: severe thunderstorm warnings1263473%9159%18 min
NWS Pueblo, CO: flash flood warnings19858%1392%69 min
NWS Grand Junction, CO: tornado warnings2150%1100%6 min
NWS Grand Junction, CO: severe thunderstorm warnings30680%2642%18 min
NWS Grand Junction, CO: flash flood warnings37392%2413%28 min
NWS Denver/Boulder, CO: tornado warnings35683%1173%12 min
NWS Denver/Boulder, CO: severe thunderstorm warnings2128560%25165%19 min
NWS Denver/Boulder, CO: flash flood warnings36683%786%68 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 8, 2:42 AM MSTWinter Weather AdvisoryGJT49 hr
Jan 30, 3:35 AM MSTWinter Weather AdvisoryGJT3 days
Feb 6, 2:28 PM MSTWinter Weather AdvisoryGJT54 hr
Feb 15, 2:59 PM MSTBlizzard WatchGJT14 hr
Feb 15, 3:00 PM MSTHigh Wind WarningGJT33 hr
Feb 16, 5:12 AM MSTBlizzard WarningGJT23 hr
Feb 16, 5:12 AM MSTWinter Weather AdvisoryGJT39 hr
Feb 16, 5:29 AM MSTWind AdvisoryGJT19 hr
Feb 17, 3:04 PM MSTWinter Storm WatchGJT37 hr
Feb 18, 1:04 PM MSTWinter Storm WarningGJT59 hr
Feb 19, 3:42 AM MSTWinter Weather AdvisoryGJT31 hr
Feb 24, 3:56 AM MSTWinter Storm WarningGJT3 days
Feb 24, 3:56 AM MSTWinter Weather AdvisoryGJT3 days
Feb 24, 2:16 PM MSTWinter Storm WatchGJT12 hr
Mar 5, 4:12 AM MSTWinter Weather AdvisoryGJT50 hr
Mar 5, 2:15 PM MSTWinter Storm WatchGJT38 hr
Mar 6, 3:01 PM MSTWinter Storm WarningGJT51 hr
Mar 7, 4:02 AM MSTWinter Weather AdvisoryGJT32 hr
Mar 18, 9:47 PM MDTRed Flag WarningGJT22 hr
Mar 19, 3:12 AM MDTFire Weather WatchGJT24 hr
Mar 20, 3:29 AM MDTRed Flag WarningGJT18 hr
Mar 20, 2:35 PM MDTWind AdvisoryGJT30 hr
Mar 20, 3:02 PM MDTWinter Weather AdvisoryGJT57 hr
Mar 20, 3:17 PM MDTFire Weather WatchGJT13 hr
Mar 21, 4:00 AM MDTRed Flag WarningGJT17 hr
Mar 26, 4:22 AM MDTWinter Weather AdvisoryGJT34 hr
Mar 31, 3:04 PM MDTFire Weather WatchGJT24 hr
Apr 1, 3:08 PM MDTRed Flag WarningGJT29 hr
Apr 2, 4:25 AM MDTWinter Weather AdvisoryGJT48 hr
Apr 6, 3:15 AM MDTWinter Weather AdvisoryGJT33 hr
Apr 8, 4:40 AM MDTWinter Storm WatchGJT22 hr
Apr 8, 10:01 AM MDTWinter Storm WarningGJT62 hr
Apr 20, 2:55 PM MDTRed Flag WarningGJT30 hr
Apr 22, 4:30 AM MDTWinter Storm WatchGJT11 hr
Apr 22, 3:00 PM MDTWinter Storm WarningGJT63 hr
Apr 25, 5:35 AM MDTFreeze WatchGJT4 hr
Apr 25, 9:55 AM MDTFreeze WarningGJT47 hr
Apr 25, 3:00 PM MDTWinter Weather AdvisoryGJT33 hr
Apr 26, 2:05 PM MDTFreeze WatchGJT17 hr
Apr 27, 6:51 AM MDTFreeze WarningGJT26 hr
Apr 27, 2:30 PM MDTFire Weather WatchGJT24 hr
Apr 28, 2:48 PM MDTRed Flag WarningGJT30 hr
Apr 29, 4:00 AM MDTWind AdvisoryGJT17 hr
Apr 30, 2:13 PM MDTWinter Weather AdvisoryGJT34 hr
May 4, 9:21 PM MDTFire Weather WatchGJT15 hr
May 4, 9:21 PM MDTFire Weather WatchGJT26 hr
May 6, 2:34 PM MDTFire Weather WatchGJT15 hr
May 6, 2:34 PM MDTRed Flag WarningGJT31 hr
May 6, 3:00 PM MDTRed Flag WarningGJT6 hr
May 7, 5:16 AM MDTRed Flag WarningGJT40 hr
May 9, 3:13 PM MDTWinter Storm WatchGJT13 hr
May 10, 3:48 AM MDTWinter Storm WarningGJT44 hr
May 10, 3:48 AM MDTWinter Weather AdvisoryGJT44 hr
May 15, 4:32 AM MDTFire Weather WatchGJT10 hr
May 15, 2:40 PM MDTRed Flag WarningGJT29 hr
May 17, 3:00 PM MDTWinter Weather AdvisoryGJT17 hr
May 18, 6:17 AM MDTWinter Weather AdvisoryGJT8 hr
May 18, 2:01 PM MDTWinter Storm WarningGJT58 hr
May 26, 4:13 AM MDTWind AdvisoryGJT15 hr
May 28, 4:33 AM MDTWind AdvisoryGJT40 hr
May 29, 2:55 PM MDTFreeze WatchGJT12 hr
May 30, 3:21 AM MDTFreeze WarningGJT29 hr
May 31, 3:01 PM MDTWind AdvisoryGJT52 hr
Jun 5, 4:42 AM MDTFire Weather WatchGJT10 hr
Jun 5, 3:05 PM MDTRed Flag WarningGJT33 hr
Jun 7, 2:54 PM MDTRed Flag WarningGJT30 hr
Jun 14, 2:15 PM MDTFire Weather WatchGJT24 hr
Jun 15, 2:02 PM MDTFire Weather WatchGJT24 hr
Jun 15, 2:02 PM MDTFire Weather WatchGJT48 hr
Jun 15, 2:02 PM MDTRed Flag WarningGJT32 hr
Jun 16, 2:27 PM MDTRed Flag WarningGJT29 hr
Jun 17, 1:46 PM MDTFire Weather WatchGJT25 hr
Jun 17, 1:46 PM MDTRed Flag WarningGJT31 hr
Jun 18, 2:57 PM MDTRed Flag WarningGJT28 hr
Jun 19, 2:03 PM MDTWinter Weather AdvisoryGJT25 hr
Jun 23, 3:25 AM MDTFire Weather WatchGJT11 hr
Jun 23, 2:19 PM MDTRed Flag WarningGJT55 hr
Jun 25, 2:53 PM MDTRed Flag WarningGJT30 hr
Jun 26, 3:02 PM MDTFire Weather WatchGJT44 hr
Jun 27, 2:44 PM MDTRed Flag WarningGJT30 hr
Jun 28, 11:25 AM MDTRed Flag WarningGJT34 hr
Jun 29, 2:10 PM MDTRed Flag WarningGJT31 hr
Jun 30, 9:06 AM MDTSevere Thunderstorm WatchSPC7 hr
Jul 11, 3:21 AM MDTFlash Flood WatchGJT45 hr
Jul 13, 9:04 PM MDTSpecial Weather StatementABQ26 min
Jul 25, 9:03 PM MDTFlash Flood WatchGJT25 hr
Aug 2, 4:40 AM MDTFlash Flood WatchGJT16 hr
Aug 4, 2:31 PM MDTAreal Flood AdvisoryGJT118 min
Aug 11, 1:46 PM MDTAreal Flood AdvisoryGJT3 hr
Aug 16, 2:32 PM MDTAreal Flood AdvisoryGJT80 min
Aug 28, 5:53 PM MDTAreal Flood AdvisoryGJT2 hr
Sep 14, 5:00 AM MDTWinter Weather AdvisoryGJT24 hr
Oct 4, 4:51 AM MDTWinter Storm WatchGJT33 hr
Oct 5, 5:34 AM MDTWinter Storm WarningGJT39 hr
Oct 5, 9:35 PM MDTFreeze WatchGJT42 hr
Oct 5, 9:35 PM MDTFreeze WatchGJT16 hr
Oct 6, 1:28 PM MDTFreeze WarningGJT20 hr
Oct 7, 3:12 PM MDTFreeze WatchGJT23 hr
Oct 8, 2:15 PM MDTFreeze WarningGJT19 hr
Oct 9, 2:15 PM MDTFreeze WarningGJT19 hr
Oct 23, 10:55 PM MDTWinter Storm WatchGJT24 hr
Oct 24, 10:52 PM MDTWinter Storm WarningGJT46 hr
Nov 3, 4:37 AM MDTWinter Storm WatchGJT17 hr
Nov 3, 2:20 PM MDTWinter Storm WarningGJT58 hr
Nov 3, 9:55 PM MDTWinter Weather AdvisoryGJT50 hr
Nov 6, 2:55 PM MSTWinter Weather AdvisoryGJT33 hr
Nov 10, 3:04 PM MSTWinter Storm WatchGJT24 hr
Nov 11, 3:00 PM MSTWinter Weather AdvisoryGJT51 hr
Nov 21, 8:45 AM MSTWinter Weather AdvisoryGJT9 hr
Dec 2, 4:24 AM MSTWinter Storm WarningGJT43 hr
Dec 2, 4:24 AM MSTWinter Weather AdvisoryGJT43 hr
Dec 11, 3:13 PM MSTWinter Storm WatchGJT11 hr
Dec 12, 2:10 AM MSTWinter Storm WarningGJT58 hr
Dec 12, 2:10 AM MSTWinter Weather AdvisoryGJT60 hr
Dec 20, 3:37 PM MSTWinter Weather AdvisoryGJT52 hr
Dec 31, 9:30 AM MSTHigh Wind WarningGJT5 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 archive20102012

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.