Alert archive / Colorado / Costilla County

Weather alerts in Costilla County, Colorado, 2017

108 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Costilla County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts
108
Warnings
32
Watches
30
Advisories
15
Busiest month
January15 alerts
Busiest day
May 10, 20174 alerts

Over time

By month

Warning verification

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

Costilla County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings20100%0
Flash flood warnings00

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Pueblo, CO: tornado warnings12192%333%0 min
NWS Pueblo, CO: severe thunderstorm warnings2456275%12385%21 min
NWS Pueblo, CO: flash flood warnings511473%2471%52 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 1, 9:17 PM MSTDense Fog AdvisoryPUB12 hr
Jan 3, 3:10 PM MSTWinter Storm WatchPUB19 hr
Jan 3, 3:10 PM MSTWinter Storm WarningPUB64 hr
Jan 3, 3:10 PM MSTWinter Weather AdvisoryPUB64 hr
Jan 5, 5:12 PM MSTMesoscale DiscussionSPC5 hr
Jan 7, 4:08 AM MSTWind Chill WarningPUB5 hr
Jan 7, 3:08 PM MSTHigh Wind WatchPUB313 days
Jan 8, 12:45 PM MSTHigh Wind WarningPUB31 hr
Jan 10, 4:27 AM MSTHigh Wind WatchPUB10 hr
Jan 10, 2:39 PM MSTHigh Wind WarningPUB21 hr
Jan 13, 3:19 PM MSTWinter Storm WatchPUB14 hr
Jan 14, 4:58 AM MSTWinter Storm WarningPUB54 hr
Jan 14, 1:07 PM MSTWinter Weather AdvisoryPUB58 hr
Jan 19, 4:02 AM MSTWinter Weather AdvisoryPUB64 hr
Jan 22, 3:50 AM MSTWinter Weather AdvisoryPUB61 hr
Feb 6, 9:37 PM MSTHigh Wind WatchPUB17 hr
Feb 7, 2:19 PM MSTHigh Wind WarningPUB24 hr
Feb 10, 4:17 AM MSTWinter Storm WatchPUB25 hr
Feb 10, 2:42 PM MSTWinter Weather AdvisoryPUB45 hr
Feb 10, 2:47 PM MSTHigh Wind WarningPUB13 hr
Feb 20, 3:08 PM MSTFire Weather WatchPUB234 days
Feb 22, 3:47 AM MSTFire Weather WatchPUB309 days
Feb 23, 3:28 AM MSTHigh Wind WarningPUB13 hr
Feb 26, 3:35 PM MSTFire Weather WatchPUB306 days
Mar 3, 2:52 PM MSTFire Weather WatchPUB24 hr
Mar 3, 2:52 PM MSTRed Flag WarningPUB27 hr
Mar 4, 2:28 PM MSTRed Flag WarningPUB29 hr
Mar 5, 7:47 AM MSTHigh Wind WatchPUB7 hr
Mar 5, 2:58 PM MSTHigh Wind WarningPUB27 hr
Mar 10, 2:40 PM MSTFire Weather WatchPUB25 hr
Mar 11, 3:20 PM MSTRed Flag WarningPUB27 hr
Mar 17, 3:50 AM MDTFire Weather WatchPUB41 hr
Mar 22, 3:30 PM MDTWinter Storm WatchPUB24 hr
Mar 23, 4:07 AM MDTWinter Weather AdvisoryPUB32 hr
Mar 24, 9:58 AM MDTWinter Storm WarningPUB5 hr
Mar 27, 12:11 PM MDTWinter Storm WatchPUB17 hr
Mar 28, 5:38 AM MDTWinter Storm WarningPUB30 hr
Mar 30, 11:01 AM MDTWinter Storm WatchPUB23 hr
Mar 31, 4:29 AM MDTWinter Storm WarningPUB35 hr
Apr 2, 3:55 AM MDTWinter Storm WatchPUB24 hr
Apr 3, 4:23 AM MDTWinter Storm WarningPUB35 hr
Apr 3, 4:23 AM MDTWinter Weather AdvisoryPUB44 hr
Apr 13, 1:43 PM MDTFire Weather WatchPUB14 hr
Apr 14, 3:59 AM MDTRed Flag WarningPUB16 hr
Apr 23, 9:02 AM MDTRed Flag WarningPUB34 hr
Apr 24, 2:53 PM MDTWinter Storm WatchPUB13 hr
Apr 25, 4:03 AM MDTWinter Weather AdvisoryPUB24 hr
Apr 27, 4:33 AM MDTWinter Storm WatchPUB24 hr
Apr 28, 4:34 AM MDTWinter Storm WarningPUB56 hr
May 9, 5:08 AM MDTFlash Flood WatchPUB17 hr
May 9, 11:15 AM MDTSevere Thunderstorm WatchSPC9 hr
May 9, 5:24 PM MDTMesoscale DiscussionSPC66 min
May 10, 4:30 AM MDTWinter Storm WarningPUB32 hr
May 10, 4:38 AM MDTFlash Flood WatchPUB18 hr
May 10, 1:04 PM MDTMesoscale DiscussionSPC2 hr
May 10, 3:14 PM MDTSevere Thunderstorm WarningPUB31 min
May 17, 4:19 AM MDTWinter Weather AdvisoryPUB65 hr
May 18, 5:23 AM MDTWinter Storm WatchPUB10 hr
May 29, 1:32 PM MDTMesoscale DiscussionSPC58 min
Jun 1, 12:17 PM MDTSpecial Weather StatementPUB43 min
Jun 1, 3:22 PM MDTSpecial Weather StatementPUB23 min
Jun 5, 2:05 PM MDTSpecial Weather StatementPUB25 min
Jun 5, 3:05 PM MDTSpecial Weather StatementPUB25 min
Jun 6, 1:45 PM MDTSpecial Weather StatementPUB30 min
Jun 7, 1:29 PM MDTSpecial Weather StatementPUB46 min
Jun 18, 5:27 PM MDTSpecial Weather StatementPUB48 min
Jun 22, 1:59 PM MDTSpecial Weather StatementPUB46 min
Jun 24, 1:42 PM MDTMesoscale DiscussionSPC3 hr
Jun 25, 3:48 PM MDTSpecial Weather StatementPUB42 min
Jun 26, 2:52 PM MDTRed Flag WarningPUB29 hr
Jun 26, 5:40 PM MDTMesoscale DiscussionSPC2 hr
Jun 27, 3:32 PM MDTRed Flag WarningPUB28 hr
Jun 28, 2:49 PM MDTRed Flag WarningPUB29 hr
Jun 30, 12:54 PM MDTMesoscale DiscussionSPC2 hr
Jul 1, 2:26 PM MDTSpecial Weather StatementPUB34 min
Jul 3, 4:13 PM MDTSpecial Weather StatementPUB32 min
Jul 11, 12:16 PM MDTSpecial Weather StatementPUB44 min
Jul 12, 9:33 AM MDTFlash Flood WatchPUB11 hr
Jul 13, 12:54 PM MDTSpecial Weather StatementPUB36 min
Jul 14, 5:30 PM MDTSevere Thunderstorm WarningPUB30 min
Jul 15, 4:49 PM MDTSpecial Weather StatementPUB41 min
Jul 21, 2:53 PM MDTSpecial Weather StatementPUB22 min
Jul 22, 11:15 AM MDTFlash Flood WatchPUB8 hr
Jul 22, 11:57 AM MDTSpecial Weather StatementPUB48 min
Jul 26, 4:24 AM MDTFlash Flood WatchPUB23 hr
Jul 27, 3:16 PM MDTSpecial Weather StatementPUB29 min
Jul 29, 4:04 AM MDTFlash Flood WatchPUB23 hr
Jul 29, 3:10 PM MDTAreal Flood AdvisoryPUB3 hr
Jul 30, 3:01 AM MDTFlash Flood WatchPUB24 hr
Aug 7, 4:42 PM MDTSpecial Weather StatementPUB33 min
Aug 9, 2:22 PM MDTSpecial Weather StatementPUB38 min
Aug 13, 2:46 PM MDTSpecial Weather StatementPUB29 min
Aug 22, 4:05 PM MDTSpecial Weather StatementPUB25 min
Sep 3, 5:28 PM MDTSpecial Weather StatementPUB32 min
Sep 17, 1:54 PM MDTSpecial Weather StatementPUB96 min
Sep 24, 3:15 PM MDTFreeze WarningPUB18 hr
Sep 25, 3:17 PM MDTFreeze WarningPUB17 hr
Sep 27, 4:14 AM MDTWinter Weather AdvisoryPUB32 hr
Oct 4, 12:04 PM MDTMesoscale DiscussionSPC2 hr
Oct 7, 3:05 PM MDTWinter Storm WatchPUB13 hr
Oct 8, 3:52 AM MDTWinter Weather AdvisoryPUB39 hr
Oct 13, 3:30 AM MDTRed Flag WarningPUB38 hr
Oct 29, 2:51 PM MDTWinter Weather AdvisoryPUB46 hr
Nov 4, 4:12 AM MDTHigh Wind WarningPUB13 hr
Nov 6, 4:06 AM MSTWinter Weather AdvisoryPUB49 hr
Nov 20, 4:47 AM MSTRed Flag WarningPUB12 hr
Dec 28, 12:44 PM MSTRed Flag WarningPUB28 hr
Dec 29, 2:07 PM MSTRed Flag WarningPUB27 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 archive20162018

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.