Alert archive / Colorado / Costilla County
Weather alerts in Costilla County, Colorado, 2025
155 weather alerts in 2025, 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 2025. Tap one for its archive.
- Alerts
- 155
- Warnings
- 50
- Watches
- 35
- Advisories
- 23
- Busiest month
- April25 alerts
- Busiest day
- June 9, 20256 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, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 0 | 100% | 0 | ||
| Flash flood warnings | 4 | 1 | 75% | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Pueblo, CO: tornado warnings | 20 | 2 | 90% | 9 | 33% | 5 min |
| NWS Pueblo, CO: severe thunderstorm warnings | 441 | 68 | 85% | 171 | 82% | 17 min |
| NWS Pueblo, CO: flash flood warnings | 60 | 6 | 90% | 12 | 58% | 40 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 6, 3:37 AM MST | Winter Weather Advisory | PUB | 35 hr |
| Jan 8, 2:12 PM MST | Winter Weather Advisory | PUB | 30 hr |
| Jan 11, 1:37 PM MST | Winter Weather Advisory | PUB | 13 hr |
| Jan 16, 1:38 PM MST | Winter Weather Advisory | PUB | 54 hr |
| Jan 18, 3:52 AM MST | Cold Weather Advisory | PUB | 61 hr |
| Jan 18, 3:52 AM MST | Extreme Cold Watch | PUB | 47 hr |
| Jan 20, 3:14 AM MST | Extreme Cold Warning | PUB | 31 hr |
| Jan 27, 1:46 PM MST | Winter Storm Watch | PUB | 24 hr |
| Jan 28, 2:01 PM MST | Winter Weather Advisory | PUB | 50 hr |
| Feb 10, 2:19 PM MST | Winter Weather Advisory | PUB | 42 hr |
| Feb 13, 3:00 AM MST | Winter Storm Warning | PUB | 62 hr |
| Feb 13, 3:00 AM MST | Winter Weather Advisory | PUB | 63 hr |
| Feb 13, 3:04 AM MST | Red Flag Warning | PUB | 15 hr |
| Feb 25, 2:27 PM MST | Red Flag Warning | PUB | 28 hr |
| Mar 2, 3:01 AM MST | Winter Weather Advisory | PUB | 55 hr |
| Mar 5, 3:11 AM MST | High Wind Watch | PUB | 11 hr |
| Mar 5, 2:22 PM MST | High Wind Warning | PUB | 28 hr |
| Mar 5, 2:22 PM MST | Winter Weather Advisory | PUB | 69 hr |
| Mar 6, 2:28 PM MST | Winter Storm Watch | PUB | 13 hr |
| Mar 7, 3:22 AM MST | Winter Storm Warning | PUB | 32 hr |
| Mar 12, 3:04 AM MDT | Winter Weather Advisory | PUB | 63 hr |
| Mar 12, 2:23 PM MDT | High Wind Watch | PUB | 23 hr |
| Mar 13, 9:38 AM MDT | High Wind Warning | PUB | 33 hr |
| Mar 15, 2:22 PM MDT | Fire Weather Watch | PUB | 13 hr |
| Mar 16, 3:18 AM MDT | Red Flag Warning | PUB | 65 hr |
| Mar 16, 2:05 PM MDT | High Wind Watch | PUB | 35 hr |
| Mar 17, 2:08 PM MDT | High Wind Warning | PUB | 45 hr |
| Mar 19, 3:03 AM MDT | Fire Weather Watch | PUB | 11 hr |
| Mar 19, 2:13 PM MDT | Red Flag Warning | PUB | 33 hr |
| Mar 26, 2:08 PM MDT | Fire Weather Watch | PUB | 24 hr |
| Mar 27, 2:05 PM MDT | Red Flag Warning | PUB | 30 hr |
| Mar 28, 3:21 AM MDT | Fire Weather Watch | PUB | 11 hr |
| Mar 28, 2:20 PM MDT | Red Flag Warning | PUB | 30 hr |
| Mar 29, 3:27 AM MDT | Fire Weather Watch | PUB | 24 hr |
| Mar 30, 3:06 AM MDT | Red Flag Warning | PUB | 42 hr |
| Mar 30, 1:50 PM MDT | High Wind Watch | PUB | 24 hr |
| Mar 31, 1:56 PM MDT | High Wind Warning | PUB | 30 hr |
| Apr 3, 2:56 AM MDT | Winter Storm Watch | PUB | 24 hr |
| Apr 3, 2:06 PM MDT | Winter Weather Advisory | PUB | 52 hr |
| Apr 4, 3:21 AM MDT | Winter Storm Warning | PUB | 36 hr |
| Apr 7, 1:50 PM MDT | Fire Weather Watch | PUB | 24 hr |
| Apr 8, 2:15 PM MDT | Red Flag Warning | PUB | 29 hr |
| Apr 10, 3:13 AM MDT | Fire Weather Watch | PUB | 35 hr |
| Apr 11, 2:57 AM MDT | Fire Weather Watch | PUB | 35 hr |
| Apr 11, 2:02 PM MDT | Red Flag Warning | PUB | 31 hr |
| Apr 12, 2:03 PM MDT | Red Flag Warning | PUB | 30 hr |
| Apr 15, 3:05 AM MDT | Fire Weather Watch | PUB | 11 hr |
| Apr 15, 2:24 PM MDT | Fire Weather Watch | PUB | 13 hr |
| Apr 15, 2:24 PM MDT | Red Flag Warning | PUB | 30 hr |
| Apr 16, 3:10 AM MDT | Red Flag Warning | PUB | 42 hr |
| Apr 16, 2:30 PM MDT | High Wind Watch | PUB | 6 hr |
| Apr 16, 2:32 PM MDT | Winter Storm Watch | PUB | 13 hr |
| Apr 16, 8:48 PM MDT | High Wind Warning | PUB | 20 hr |
| Apr 17, 3:33 AM MDT | Winter Storm Warning | PUB | 60 hr |
| Apr 24, 3:09 AM MDT | Fire Weather Watch | PUB | 11 hr |
| Apr 24, 2:19 PM MDT | Fire Weather Watch | PUB | 24 hr |
| Apr 24, 2:19 PM MDT | Red Flag Warning | PUB | 30 hr |
| Apr 25, 2:38 PM MDT | Fire Weather Watch | PUB | 24 hr |
| Apr 25, 2:38 PM MDT | Red Flag Warning | PUB | 29 hr |
| Apr 26, 2:33 PM MDT | Fire Weather Watch | PUB | 11 hr |
| Apr 26, 2:33 PM MDT | Red Flag Warning | PUB | 30 hr |
| Apr 27, 1:05 AM MDT | Red Flag Warning | PUB | 43 hr |
| May 4, 2:04 PM MDT | Winter Storm Warning | PUB | 70 hr |
| May 5, 3:24 AM MDT | Winter Storm Watch | PUB | 10 hr |
| May 26, 12:39 PM MDT | Special Weather Statement | PUB | 36 min |
| May 28, 3:58 PM MDT | Special Weather Statement | PUB | 32 min |
| May 29, 1:51 PM MDT | Special Weather Statement | PUB | 24 min |
| Jun 1, 12:53 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 1, 2:51 PM MDT | Special Weather Statement | PUB | 24 min |
| Jun 4, 3:21 PM MDT | Special Weather Statement | PUB | 39 min |
| Jun 9, 11:53 AM MDT | Special Weather Statement | PUB | 37 min |
| Jun 9, 12:38 PM MDT | Special Weather Statement | PUB | 37 min |
| Jun 9, 12:45 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 1:15 PM MDT | Special Weather Statement | PUB | 30 min |
| Jun 9, 1:27 PM MDT | Special Weather Statement | ABQ | 33 min |
| Jun 9, 2:50 PM MDT | Special Weather Statement | PUB | 25 min |
| Jun 10, 12:38 PM MDT | Special Weather Statement | PUB | 37 min |
| Jun 10, 3:32 PM MDT | Special Weather Statement | PUB | 43 min |
| Jun 12, 3:39 PM MDT | Special Weather Statement | PUB | 36 min |
| Jun 15, 4:15 PM MDT | Special Weather Statement | PUB | 30 min |
| Jun 19, 12:35 PM MDT | Special Weather Statement | PUB | 25 min |
| Jun 19, 1:50 PM MDT | Red Flag Warning | PUB | 56 hr |
| Jun 20, 1:49 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 2:33 PM MDT | Red Flag Warning | PUB | 55 hr |
| Jun 24, 12:16 PM MDT | Special Weather Statement | PUB | 29 min |
| Jun 30, 3:45 PM MDT | Special Weather Statement | PUB | 30 min |
| Jul 8, 2:06 PM MDT | Fire Weather Watch | PUB | 21 hr |
| Jul 9, 10:53 AM MDT | Red Flag Warning | PUB | 34 hr |
| Jul 12, 3:45 PM MDT | Special Weather Statement | PUB | 30 min |
| Jul 12, 4:23 PM MDT | Special Weather Statement | PUB | 37 min |
| Jul 12, 4:31 PM MDT | Severe Thunderstorm Warning | PUB | 29 min |
| Jul 12, 4:56 PM MDT | Severe Thunderstorm Warning | PUB | 34 min |
| Jul 12, 5:26 PM MDT | Special Weather Statement | PUB | 34 min |
| Jul 12, 5:53 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 18, 3:19 PM MDT | Special Weather Statement | PUB | 26 min |
| Jul 18, 3:47 PM MDT | Special Weather Statement | PUB | 28 min |
| Jul 18, 4:22 PM MDT | Special Weather Statement | PUB | 38 min |
| Jul 18, 5:07 PM MDT | Special Weather Statement | PUB | 23 min |
| Jul 18, 5:46 PM MDT | Special Weather Statement | PUB | 29 min |
| Jul 23, 5:46 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 24, 12:44 AM MDT | Flood Watch | PUB | 20 hr |
| Jul 24, 12:44 PM MDT | Special Weather Statement | PUB | 31 min |
| Jul 24, 2:10 PM MDT | Special Weather Statement | PUB | 35 min |
| Jul 28, 2:50 PM MDT | Special Weather Statement | PUB | 40 min |
| Jul 30, 2:59 AM MDT | Flood Watch | PUB | 18 hr |
| Jul 30, 3:59 PM MDT | Severe Thunderstorm Warning | PUB | 31 min |
| Jul 30, 5:25 PM MDT | Special Weather Statement | PUB | 35 min |
| Jul 30, 6:08 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 31, 4:18 PM MDT | Severe Thunderstorm Warning | PUB | 26 min |
| Aug 1, 2:57 PM MDT | Severe Thunderstorm Warning | PUB | 33 min |
| Aug 1, 3:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Aug 6, 3:14 AM MDT | Red Flag Warning | PUB | 41 hr |
| Aug 6, 2:17 PM MDT | Fire Weather Watch | PUB | 13 hr |
| Aug 7, 3:15 AM MDT | Red Flag Warning | PUB | 41 hr |
| Aug 7, 7:53 PM MDT | Fire Weather Watch | PUB | 5 hr |
| Aug 8, 1:22 AM MDT | Red Flag Warning | PUB | 43 hr |
| Aug 11, 2:55 PM MDT | Special Weather Statement | PUB | 35 min |
| Aug 11, 4:38 PM MDT | Special Weather Statement | PUB | 37 min |
| Aug 12, 2:43 PM MDT | Fire Weather Watch | PUB | 24 hr |
| Aug 13, 2:41 PM MDT | Red Flag Warning | PUB | 29 hr |
| Aug 23, 4:24 PM MDT | Special Weather Statement | PUB | 51 min |
| Aug 23, 4:42 PM MDT | Severe Thunderstorm Warning | PUB | 33 min |
| Aug 23, 4:57 PM MDT | Flash Flood Warning | PUB | 2 hr |
| Aug 24, 2:06 PM MDT | Flood Watch | PUB | 34 hr |
| Aug 26, 4:42 PM MDT | Special Weather Statement | PUB | 33 min |
| Sep 2, 3:27 PM MDT | Special Weather Statement | PUB | 33 min |
| Sep 2, 4:01 PM MDT | Special Weather Statement | PUB | 29 min |
| Sep 10, 2:29 PM MDT | Special Weather Statement | PUB | 31 min |
| Sep 10, 2:34 PM MDT | Severe Thunderstorm Warning | PUB | 26 min |
| Sep 10, 3:02 PM MDT | Special Weather Statement | PUB | 28 min |
| Sep 11, 3:06 PM MDT | Special Weather Statement | PUB | 24 min |
| Sep 13, 1:29 AM MDT | Frost Advisory | PUB | 32 hr |
| Sep 13, 9:19 AM MDT | Special Weather Statement | PUB | 41 min |
| Sep 14, 1:35 AM MDT | Frost Advisory | PUB | 31 hr |
| Sep 23, 1:37 AM MDT | Frost Advisory | PUB | 30 hr |
| Sep 24, 12:37 AM MDT | Frost Advisory | PUB | 31 hr |
| Oct 1, 1:01 PM MDT | Frost Advisory | PUB | 20 hr |
| Oct 3, 3:20 AM MDT | Freeze Watch | PUB | 23 hr |
| Oct 4, 2:04 AM MDT | Freeze Warning | PUB | 31 hr |
| Oct 15, 7:18 AM MDT | Special Weather Statement | PUB | 27 min |
| Oct 15, 2:02 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Oct 19, 2:42 AM MDT | High Wind Watch | PUB | 11 hr |
| Oct 19, 2:02 PM MDT | High Wind Warning | PUB | 19 hr |
| Oct 23, 1:03 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Oct 27, 3:06 AM MDT | Fire Weather Watch | PUB | 11 hr |
| Oct 27, 2:12 PM MDT | Red Flag Warning | PUB | 28 hr |
| Nov 16, 6:25 PM MST | Special Weather Statement | PUB | 35 min |
| Nov 19, 12:33 AM MST | Winter Weather Advisory | PUB | 52 hr |
| Nov 22, 12:30 AM MST | Winter Weather Advisory | PUB | 47 hr |
| Nov 24, 3:36 AM MST | Freezing Fog Advisory | PUB | 5 hr |
| Nov 29, 2:11 PM MST | Winter Weather Advisory | PUB | 39 hr |
| Dec 2, 2:25 AM MST | Winter Weather Advisory | PUB | 48 hr |
| Dec 2, 2:07 PM MST | Winter Storm Warning | PUB | 36 hr |
| Dec 19, 10:43 AM MST | High Wind Warning | PUB | 18 hr |
| Dec 26, 2:09 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 | 7 |
| Mesoscale Discussion | 6 |
| Special Weather Statement | 41 |
| Flooding | |
| Flash Flood Warning | 4 |
| Flood Watch | 3 |
| Winter | |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 16 |
| Cold | |
| Extreme Cold Warning | 1 |
| Freeze Warning | 1 |
| Extreme Cold Watch | 1 |
| Freeze Watch | 1 |
| Cold Weather Advisory | 1 |
| Frost Advisory | 5 |
| Wind and dust | |
| High Wind Warning | 7 |
| High Wind Watch | 6 |
| Fire | |
| Red Flag Warning | 24 |
| Fire Weather Watch | 19 |
| Fog and smoke | |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.