Alert archive / Colorado / Costilla County
Weather alerts in Costilla County, Colorado, 2018
162 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 162
- Warnings
- 77
- Watches
- 46
- Advisories
- 18
- Busiest month
- April26 alerts
- Busiest day
- February 17, 20184 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, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 0 | 100% | 0 | ||
| Flash flood warnings | 13 | 3 | 77% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Pueblo, CO: tornado warnings | 5 | 0 | 100% | 4 | 0% | |
| NWS Pueblo, CO: severe thunderstorm warnings | 309 | 93 | 70% | 236 | 83% | 18 min |
| NWS Pueblo, CO: flash flood warnings | 49 | 17 | 65% | 33 | 70% | 60 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 9, 3:48 AM MST | Winter Weather Advisory | PUB | 48 hr |
| Jan 19, 3:16 PM MST | Winter Weather Advisory | PUB | 53 hr |
| Jan 24, 3:03 PM MST | Red Flag Warning | PUB | 26 hr |
| Jan 26, 3:20 AM MST | High Wind Warning | PUB | 8 hr |
| Jan 29, 9:42 AM MST | Red Flag Warning | PUB | 32 hr |
| Jan 30, 4:13 AM MST | Fire Weather Watch | PUB | 11 hr |
| Jan 30, 2:55 PM MST | Red Flag Warning | PUB | 26 hr |
| Feb 9, 3:16 PM MST | Winter Weather Advisory | PUB | 37 hr |
| Feb 14, 3:50 AM MST | Winter Weather Advisory | PUB | 37 hr |
| Feb 17, 4:04 AM MST | High Wind Watch | PUB | 11 hr |
| Feb 17, 2:53 PM MST | High Wind Warning | PUB | 45 hr |
| Feb 17, 2:55 PM MST | Winter Weather Advisory | PUB | 65 hr |
| Feb 17, 3:25 PM MST | Red Flag Warning | PUB | 27 hr |
| Feb 24, 3:25 PM MST | Fire Weather Watch | PUB | 24 hr |
| Feb 25, 3:05 PM MST | Red Flag Warning | PUB | 27 hr |
| Mar 1, 3:21 PM MST | Fire Weather Watch | PUB | 24 hr |
| Mar 1, 3:21 PM MST | Red Flag Warning | PUB | 27 hr |
| Mar 2, 3:45 PM MST | Red Flag Warning | PUB | 28 hr |
| Mar 3, 3:12 AM MST | Red Flag Warning | PUB | 41 hr |
| Mar 3, 3:00 PM MST | High Wind Warning | PUB | 32 hr |
| Mar 4, 10:54 AM MST | Red Flag Warning | PUB | 31 hr |
| Mar 9, 3:35 PM MST | Red Flag Warning | PUB | 26 hr |
| Mar 15, 4:32 AM MDT | High Wind Watch | PUB | 10 hr |
| Mar 15, 2:49 PM MDT | High Wind Warning | PUB | 13 hr |
| Mar 15, 3:30 PM MDT | Red Flag Warning | PUB | 28 hr |
| Mar 16, 3:21 PM MDT | Red Flag Warning | PUB | 28 hr |
| Mar 24, 3:22 AM MDT | Fire Weather Watch | PUB | 12 hr |
| Mar 24, 3:04 PM MDT | Red Flag Warning | PUB | 28 hr |
| Mar 25, 3:07 PM MDT | Winter Storm Watch | PUB | 13 hr |
| Mar 26, 4:09 AM MDT | Winter Storm Warning | PUB | 32 hr |
| Mar 26, 4:09 AM MDT | Winter Weather Advisory | PUB | 38 hr |
| Mar 31, 3:06 PM MDT | Fire Weather Watch | PUB | 20 hr |
| Apr 1, 11:17 AM MDT | Red Flag Warning | PUB | 33 hr |
| Apr 3, 4:29 AM MDT | Fire Weather Watch | PUB | 11 hr |
| Apr 3, 2:59 PM MDT | Red Flag Warning | PUB | 29 hr |
| Apr 7, 2:58 PM MDT | Red Flag Warning | PUB | 28 hr |
| Apr 9, 3:00 PM MDT | Fire Weather Watch | PUB | 13 hr |
| Apr 10, 3:52 AM MDT | Red Flag Warning | PUB | 41 hr |
| Apr 10, 3:52 AM MDT | Red Flag Warning | PUB | 65 hr |
| Apr 11, 3:52 AM MDT | High Wind Watch | PUB | 11 hr |
| Apr 11, 3:21 PM MDT | High Wind Warning | PUB | 30 hr |
| Apr 14, 6:26 PM MDT | Fire Weather Watch | PUB | 10 hr |
| Apr 15, 4:20 AM MDT | Fire Weather Watch | PUB | 11 hr |
| Apr 15, 4:20 AM MDT | Red Flag Warning | PUB | 40 hr |
| Apr 15, 3:00 PM MDT | Red Flag Warning | PUB | 55 hr |
| Apr 16, 3:10 PM MDT | High Wind Watch | PUB | 12 hr |
| Apr 17, 3:35 AM MDT | High Wind Warning | PUB | 16 hr |
| Apr 17, 9:22 AM MDT | Dust Storm Warning | PUB | 8 hr |
| Apr 18, 3:49 AM MDT | Fire Weather Watch | PUB | 11 hr |
| Apr 18, 3:12 PM MDT | Red Flag Warning | PUB | 29 hr |
| Apr 19, 4:22 AM MDT | Winter Storm Watch | PUB | 11 hr |
| Apr 19, 3:09 PM MDT | Winter Storm Warning | PUB | 28 hr |
| Apr 19, 3:09 PM MDT | Winter Weather Advisory | PUB | 44 hr |
| Apr 28, 4:04 PM MDT | Fire Weather Watch | PUB | 21 hr |
| Apr 28, 4:04 PM MDT | Red Flag Warning | PUB | 27 hr |
| Apr 29, 12:57 PM MDT | Red Flag Warning | PUB | 32 hr |
| Apr 30, 2:59 AM MDT | Fire Weather Watch | PUB | 12 hr |
| Apr 30, 3:21 PM MDT | Red Flag Warning | PUB | 29 hr |
| May 9, 3:06 AM MDT | Red Flag Warning | PUB | 42 hr |
| May 9, 3:30 PM MDT | Fire Weather Watch | PUB | 24 hr |
| May 10, 3:07 PM MDT | Red Flag Warning | PUB | 30 hr |
| May 11, 3:51 AM MDT | Fire Weather Watch | PUB | 11 hr |
| May 11, 3:08 PM MDT | Red Flag Warning | PUB | 30 hr |
| May 12, 2:59 PM MDT | Red Flag Warning | PUB | 30 hr |
| May 15, 1:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| May 15, 2:46 PM MDT | Fire Weather Watch | PUB | 24 hr |
| May 16, 2:17 PM MDT | Red Flag Warning | PUB | 30 hr |
| May 21, 11:34 AM MDT | Special Weather Statement | PUB | 41 min |
| May 22, 10:42 AM MDT | Fire Weather Watch | PUB | 4 hr |
| May 22, 3:00 PM MDT | Red Flag Warning | PUB | 29 hr |
| May 24, 2:29 PM MDT | Fire Weather Watch | PUB | 24 hr |
| May 25, 2:26 PM MDT | Fire Weather Watch | PUB | 13 hr |
| May 25, 2:26 PM MDT | Red Flag Warning | PUB | 31 hr |
| May 26, 3:51 AM MDT | Red Flag Warning | PUB | 41 hr |
| May 27, 3:57 AM MDT | Fire Weather Watch | PUB | 11 hr |
| May 27, 3:01 PM MDT | Red Flag Warning | PUB | 30 hr |
| May 30, 3:53 AM MDT | Fire Weather Watch | PUB | 11 hr |
| May 30, 3:16 PM MDT | Fire Weather Watch | PUB | 12 hr |
| May 30, 3:16 PM MDT | Red Flag Warning | PUB | 30 hr |
| May 31, 3:45 AM MDT | Red Flag Warning | PUB | 41 hr |
| Jun 8, 2:58 PM MDT | Fire Weather Watch | PUB | 14 hr |
| Jun 9, 4:35 AM MDT | Red Flag Warning | PUB | 15 hr |
| Jun 9, 4:35 AM MDT | Red Flag Warning | PUB | 41 hr |
| Jun 13, 1:52 PM MDT | Special Weather Statement | PUB | 38 min |
| Jun 13, 3:09 PM MDT | Special Weather Statement | PUB | 51 min |
| Jun 13, 3:20 PM MDT | Severe Thunderstorm Warning | PUB | 25 min |
| Jun 13, 4:07 PM MDT | Special Weather Statement | PUB | 38 min |
| Jun 14, 9:45 AM MDT | Red Flag Warning | PUB | 10 hr |
| Jun 20, 2:50 PM MDT | Fire Weather Watch | PUB | 24 hr |
| Jun 21, 3:07 PM MDT | Red Flag Warning | PUB | 30 hr |
| Jun 22, 4:11 AM MDT | Fire Weather Watch | PUB | 11 hr |
| Jun 22, 2:54 PM MDT | Red Flag Warning | PUB | 30 hr |
| Jun 23, 4:00 AM MDT | Fire Weather Watch | PUB | 18 hr |
| Jun 23, 10:04 PM MDT | Red Flag Warning | PUB | 22 hr |
| Jun 27, 3:46 AM MDT | Fire Weather Watch | PUB | 9 hr |
| Jun 27, 1:12 PM MDT | Red Flag Warning | PUB | 32 hr |
| Jun 28, 3:41 AM MDT | Fire Weather Watch | PUB | 8 hr |
| Jun 28, 11:44 AM MDT | Red Flag Warning | PUB | 33 hr |
| Jul 2, 3:13 PM MDT | Red Flag Warning | PUB | 6 hr |
| Jul 3, 4:12 AM MDT | Red Flag Warning | PUB | 16 hr |
| Jul 4, 3:36 PM MDT | Flash Flood Watch | PUB | 29 hr |
| Jul 5, 3:02 PM MDT | Flash Flood Warning | PUB | 5 hr |
| Jul 6, 8:04 PM MDT | Special Weather Statement | PUB | 26 min |
| Jul 6, 8:42 PM MDT | Special Weather Statement | PUB | 18 min |
| Jul 11, 4:03 AM MDT | Flash Flood Watch | PUB | 40 hr |
| Jul 11, 11:18 AM MDT | Special Weather Statement | PUB | 42 min |
| Jul 14, 2:54 PM MDT | Flash Flood Watch | PUB | 53 hr |
| Jul 16, 1:56 AM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 21, 7:06 PM MDT | Areal Flood Advisory | PUB | 84 min |
| Jul 22, 4:43 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Jul 22, 11:13 PM MDT | Flash Flood Watch | PUB | 25 hr |
| Jul 23, 4:22 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 24, 9:44 AM MDT | Flash Flood Watch | PUB | 12 hr |
| Jul 24, 2:09 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 24, 2:35 PM MDT | Special Weather Statement | PUB | 40 min |
| Jul 24, 5:56 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 26, 3:55 PM MDT | Flash Flood Warning | PUB | 101 min |
| Jul 27, 12:43 PM MDT | Special Weather Statement | PUB | 47 min |
| Jul 29, 6:23 PM MDT | Flash Flood Warning | PUB | 82 min |
| Aug 1, 4:55 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Aug 5, 12:25 PM MDT | Special Weather Statement | PUB | 20 min |
| Aug 5, 12:47 PM MDT | Special Weather Statement | PUB | 13 min |
| Aug 5, 2:29 PM MDT | Special Weather Statement | PUB | 16 min |
| Aug 6, 3:32 AM MDT | Flash Flood Watch | PUB | 24 hr |
| Aug 6, 12:21 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Aug 7, 3:44 AM MDT | Flash Flood Watch | PUB | 20 hr |
| Aug 7, 4:44 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 7:42 PM MDT | Severe Thunderstorm Warning | PUB | 33 min |
| Aug 7, 7:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 9, 12:49 PM MDT | Special Weather Statement | PUB | 41 min |
| Aug 9, 1:34 PM MDT | Special Weather Statement | PUB | 41 min |
| Aug 12, 5:50 PM MDT | Special Weather Statement | PUB | 25 min |
| Aug 14, 5:56 PM MDT | Flash Flood Warning | PUB | 2 hr |
| Aug 14, 6:29 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Aug 14, 9:29 PM MDT | Flash Flood Warning | PUB | 61 min |
| Aug 15, 4:01 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Aug 17, 3:58 PM MDT | Flash Flood Warning | PUB | 5 hr |
| Aug 18, 1:10 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Aug 19, 12:21 AM MDT | Areal Flood Advisory | PUB | 2 hr |
| Aug 25, 12:43 PM MDT | Areal Flood Advisory | PUB | 98 min |
| Aug 31, 6:00 PM MDT | Special Weather Statement | PUB | 30 min |
| Sep 26, 3:41 AM MDT | Freeze Watch | PUB | 8 hr |
| Sep 26, 11:41 AM MDT | Freeze Warning | PUB | 20 hr |
| Sep 28, 1:14 PM MDT | Red Flag Warning | PUB | 29 hr |
| Oct 4, 11:44 AM MDT | Special Weather Statement | PUB | 31 min |
| Oct 7, 2:59 PM MDT | Freeze Watch | PUB | 24 hr |
| Oct 8, 2:58 PM MDT | Freeze Warning | PUB | 19 hr |
| Oct 12, 3:00 PM MDT | Winter Storm Watch | PUB | 13 hr |
| Oct 13, 4:15 AM MDT | Winter Storm Warning | PUB | 42 hr |
| Oct 13, 4:15 AM MDT | Winter Weather Advisory | PUB | 41 hr |
| Oct 14, 3:51 AM MDT | Freeze Warning | PUB | 30 hr |
| Oct 29, 4:04 AM MDT | Winter Storm Watch | PUB | 24 hr |
| Oct 29, 2:44 PM MDT | Winter Weather Advisory | PUB | 45 hr |
| Oct 30, 4:16 AM MDT | Winter Storm Warning | PUB | 32 hr |
| Nov 10, 4:03 AM MST | Winter Storm Watch | PUB | 11 hr |
| Nov 10, 3:11 PM MST | Winter Weather Advisory | PUB | 43 hr |
| Nov 23, 8:03 PM MST | High Wind Warning | PUB | 36 hr |
| Dec 1, 2:54 PM MST | Winter Weather Advisory | PUB | 37 hr |
| Dec 24, 3:11 PM MST | Winter Weather Advisory | PUB | 60 hr |
| Dec 29, 2:47 PM MST | Winter Storm Watch | PUB | 24 hr |
| Dec 30, 3:10 PM MST | Winter Storm Warning | PUB | 50 hr |
| Dec 30, 3:10 PM MST | Winter Weather Advisory | PUB | 44 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 2 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 17 |
| Flooding | |
| Flash Flood Warning | 13 |
| Flash Flood Watch | 7 |
| Areal Flood Advisory | 5 |
| Winter | |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 13 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 2 |
| Wind and dust | |
| Dust Storm Warning | 1 |
| High Wind Warning | 7 |
| High Wind Watch | 4 |
| Fire | |
| Red Flag Warning | 46 |
| Fire Weather Watch | 27 |
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.