Alert archive / Colorado / Costilla County
Weather alerts in Costilla County, Colorado, 2019
153 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 153
- Warnings
- 54
- Watches
- 28
- Advisories
- 49
- Busiest month
- August32 alerts
- Busiest day
- August 7, 20195 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, 2019
| 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 | 19 | 10 | 47% | 4 | 100% | 69 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Pueblo, CO: tornado warnings | 33 | 4 | 88% | 12 | 33% | 11 min |
| NWS Pueblo, CO: severe thunderstorm warnings | 253 | 66 | 74% | 171 | 81% | 17 min |
| NWS Pueblo, CO: flash flood warnings | 57 | 23 | 60% | 53 | 87% | 65 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 10, 2:58 PM MST | Winter Weather Advisory | PUB | 38 hr |
| Jan 17, 4:05 AM MST | Winter Weather Advisory | PUB | 40 hr |
| Feb 1, 3:02 PM MST | High Wind Watch | PUB | 24 hr |
| Feb 2, 2:55 PM MST | High Wind Warning | PUB | 26 hr |
| Feb 12, 3:00 PM MST | High Wind Watch | PUB | 112 min |
| Feb 12, 4:52 PM MST | High Wind Warning | PUB | 30 hr |
| Feb 16, 3:07 PM MST | Winter Storm Watch | PUB | 13 hr |
| Feb 17, 4:27 AM MST | Winter Storm Warning | PUB | 64 hr |
| Feb 17, 4:27 AM MST | Winter Weather Advisory | PUB | 64 hr |
| Feb 20, 2:50 PM MST | Winter Weather Advisory | PUB | 67 hr |
| Feb 28, 3:01 PM MST | Winter Storm Warning | PUB | 4 days |
| Feb 28, 3:01 PM MST | Winter Weather Advisory | PUB | 4 days |
| Mar 6, 4:15 AM MST | High Wind Warning | PUB | 32 hr |
| Mar 10, 3:08 PM MDT | Winter Storm Warning | PUB | 4 days |
| Mar 10, 3:08 PM MDT | Winter Weather Advisory | PUB | 3 days |
| Mar 22, 9:40 AM MDT | Winter Weather Advisory | PUB | 11 hr |
| Mar 26, 2:47 PM MDT | Fire Weather Watch | PUB | 24 hr |
| Mar 27, 4:07 AM MDT | Red Flag Warning | PUB | 11 hr |
| Mar 27, 3:12 PM MDT | Fire Weather Watch | PUB | 24 hr |
| Mar 28, 2:49 PM MDT | Red Flag Warning | PUB | 26 hr |
| Mar 30, 4:00 AM MDT | Winter Weather Advisory | PUB | 41 hr |
| Apr 9, 1:42 PM MDT | Winter Weather Advisory | PUB | 43 hr |
| Apr 12, 3:01 PM MDT | Winter Weather Advisory | PUB | 13 hr |
| Apr 16, 3:17 PM MDT | Winter Weather Advisory | PUB | 29 hr |
| Apr 22, 3:58 AM MDT | Winter Storm Warning | PUB | 32 hr |
| Apr 22, 3:58 AM MDT | Winter Weather Advisory | PUB | 32 hr |
| Apr 27, 2:29 PM MDT | Special Weather Statement | PUB | 46 min |
| Apr 27, 3:23 PM MDT | Winter Storm Watch | PUB | 24 hr |
| Apr 28, 3:15 PM MDT | Winter Storm Warning | PUB | 44 hr |
| Apr 28, 3:15 PM MDT | Winter Weather Advisory | PUB | 44 hr |
| May 7, 3:07 PM MDT | Winter Storm Watch | PUB | 13 hr |
| May 8, 4:21 AM MDT | Winter Storm Warning | PUB | 71 hr |
| May 8, 4:21 AM MDT | Winter Weather Advisory | PUB | 50 hr |
| May 19, 3:14 PM MDT | Winter Weather Advisory | PUB | 45 hr |
| May 29, 4:41 PM MDT | Special Weather Statement | PUB | 19 min |
| May 29, 5:24 PM MDT | Special Weather Statement | PUB | 21 min |
| Jun 2, 10:57 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 12:36 PM MDT | Special Weather Statement | PUB | 24 min |
| Jun 4, 2:48 PM MDT | Flash Flood Watch | PUB | 29 hr |
| Jun 5, 1:14 PM MDT | Areal Flood Advisory | PUB | 2 hr |
| Jun 5, 1:47 PM MDT | Flash Flood Warning | PUB | 94 min |
| Jun 5, 1:57 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jun 6, 4:50 PM MDT | Areal Flood Advisory | PUB | 115 min |
| Jun 7, 12:37 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 8, 7:49 AM MDT | Flood Watch | PUB | 12 days |
| Jun 14, 3:39 PM MDT | Flash Flood Watch | PUB | 28 hr |
| Jun 17, 1:20 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 22, 2:38 PM MDT | Freeze Watch | PUB | 14 hr |
| Jun 23, 4:54 AM MDT | Freeze Warning | PUB | 26 hr |
| Jun 27, 1:14 PM MDT | Special Weather Statement | PUB | 31 min |
| Jun 27, 1:50 PM MDT | Special Weather Statement | PUB | 40 min |
| Jun 27, 3:01 PM MDT | Special Weather Statement | PUB | 44 min |
| Jun 30, 4:23 PM MDT | Areal Flood Advisory | PUB | 112 min |
| Jun 30, 4:32 PM MDT | Flash Flood Warning | PUB | 118 min |
| Jun 30, 5:21 PM MDT | Areal Flood Advisory | PUB | 61 min |
| Jul 1, 12:26 PM MDT | Areal Flood Advisory | PUB | 2 hr |
| Jul 1, 12:37 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 1, 1:06 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Jul 1, 1:14 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 2, 2:23 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 2, 2:39 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Jul 5, 5:17 PM MDT | Special Weather Statement | PUB | 28 min |
| Jul 13, 3:15 PM MDT | Areal Flood Advisory | PUB | 2 hr |
| Jul 13, 3:55 PM MDT | Areal Flood Advisory | PUB | 2 hr |
| Jul 13, 4:24 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Jul 13, 4:52 PM MDT | Flash Flood Warning | PUB | 91 min |
| Jul 14, 4:32 PM MDT | Areal Flood Advisory | PUB | 118 min |
| Jul 14, 4:38 PM MDT | Areal Flood Advisory | PUB | 80 min |
| Jul 21, 3:51 AM MDT | Flash Flood Watch | PUB | 22 hr |
| Jul 22, 6:14 PM MDT | Flash Flood Warning | PUB | 5 hr |
| Jul 24, 2:34 PM MDT | Flash Flood Warning | PUB | 4 hr |
| Jul 24, 2:56 PM MDT | Flash Flood Watch | PUB | 31 hr |
| Jul 26, 4:07 AM MDT | Flash Flood Watch | PUB | 17 hr |
| Jul 27, 4:14 PM MDT | Special Weather Statement | PUB | 31 min |
| Jul 30, 1:45 PM MDT | Special Weather Statement | PUB | 30 min |
| Jul 30, 3:14 PM MDT | Special Weather Statement | PUB | 31 min |
| Jul 30, 3:46 PM MDT | Areal Flood Advisory | PUB | 69 min |
| Aug 2, 5:05 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Aug 2, 8:04 PM MDT | Flash Flood Warning | PUB | 116 min |
| Aug 3, 5:28 PM MDT | Areal Flood Advisory | PUB | 2 hr |
| Aug 3, 5:50 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Aug 3, 6:53 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Aug 4, 4:24 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Aug 5, 6:02 PM MDT | Special Weather Statement | PUB | 28 min |
| Aug 5, 6:15 PM MDT | Areal Flood Advisory | PUB | 98 min |
| Aug 6, 5:03 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Aug 6, 5:13 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Aug 6, 6:56 PM MDT | Special Weather Statement | PUB | 34 min |
| Aug 7, 2:34 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Aug 7, 2:45 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Aug 7, 2:52 PM MDT | Flash Flood Watch | PUB | 35 hr |
| Aug 7, 3:01 PM MDT | Areal Flood Advisory | PUB | 2 hr |
| Aug 8, 3:48 PM MDT | Special Weather Statement | PUB | 27 min |
| Aug 9, 2:23 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Aug 9, 3:55 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Aug 10, 11:46 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Aug 14, 4:57 PM MDT | Special Weather Statement | PUB | 33 min |
| Aug 14, 5:11 PM MDT | Areal Flood Advisory | PUB | 81 min |
| Aug 14, 5:28 PM MDT | Special Weather Statement | PUB | 32 min |
| Aug 17, 3:57 AM MDT | Red Flag Warning | PUB | 16 hr |
| Aug 21, 2:34 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Aug 21, 3:03 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Aug 22, 4:31 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Aug 26, 7:56 PM MDT | Special Weather Statement | PUB | 19 min |
| Aug 27, 3:19 PM MDT | Special Weather Statement | PUB | 26 min |
| Aug 27, 4:42 PM MDT | Special Weather Statement | PUB | 33 min |
| Aug 30, 6:55 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Aug 30, 7:02 PM MDT | Severe Thunderstorm Warning | PUB | 33 min |
| Aug 30, 7:31 PM MDT | Severe Thunderstorm Warning | PUB | 23 min |
| Sep 6, 3:58 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Sep 6, 5:07 PM MDT | Areal Flood Advisory | PUB | 3 hr |
| Sep 6, 5:25 PM MDT | Flash Flood Warning | PUB | 3 hr |
| Sep 21, 3:55 AM MDT | Freeze Watch | PUB | 11 hr |
| Sep 21, 10:34 AM MDT | Red Flag Warning | PUB | 9 hr |
| Sep 21, 2:57 PM MDT | Freeze Warning | PUB | 17 hr |
| Sep 22, 2:44 PM MDT | Freeze Warning | PUB | 17 hr |
| Sep 27, 3:06 PM MDT | Fire Weather Watch | PUB | 37 hr |
| Sep 27, 3:06 PM MDT | Fire Weather Watch | PUB | 37 hr |
| Sep 28, 3:52 AM MDT | Red Flag Warning | PUB | 39 hr |
| Sep 29, 3:43 AM MDT | Red Flag Warning | PUB | 39 hr |
| Sep 30, 3:45 AM MDT | Fire Weather Watch | PUB | 12 hr |
| Sep 30, 3:19 PM MDT | Red Flag Warning | PUB | 28 hr |
| Oct 1, 3:51 AM MDT | Fire Weather Watch | PUB | 11 hr |
| Oct 1, 2:44 PM MDT | Red Flag Warning | PUB | 28 hr |
| Oct 2, 3:39 AM MDT | Freeze Watch | PUB | 11 hr |
| Oct 2, 2:33 PM MDT | Freeze Warning | PUB | 18 hr |
| Oct 7, 1:10 PM MDT | Fire Weather Watch | PUB | 14 hr |
| Oct 8, 3:38 AM MDT | Red Flag Warning | PUB | 40 hr |
| Oct 13, 2:45 PM MDT | Red Flag Warning | PUB | 29 hr |
| Oct 15, 2:49 PM MDT | Fire Weather Watch | PUB | 24 hr |
| Oct 16, 2:48 PM MDT | Red Flag Warning | PUB | 29 hr |
| Oct 17, 4:10 AM MDT | Fire Weather Watch | PUB | 35 hr |
| Oct 18, 3:39 PM MDT | Fire Weather Watch | PUB | 20 hr |
| Oct 18, 3:39 PM MDT | Red Flag Warning | PUB | 28 hr |
| Oct 19, 11:30 AM MDT | Red Flag Warning | PUB | 33 hr |
| Oct 22, 3:56 AM MDT | Winter Storm Watch | PUB | 24 hr |
| Oct 23, 3:58 AM MDT | Winter Storm Warning | PUB | 32 hr |
| Oct 23, 3:58 AM MDT | Winter Weather Advisory | PUB | 32 hr |
| Oct 26, 2:58 PM MDT | Winter Weather Advisory | PUB | 47 hr |
| Oct 28, 3:06 PM MDT | Winter Weather Advisory | PUB | 45 hr |
| Nov 19, 3:23 AM MST | Winter Weather Advisory | PUB | 3 days |
| Nov 24, 2:54 PM MST | Winter Weather Advisory | PUB | 50 hr |
| Nov 26, 2:03 PM MST | Winter Storm Warning | PUB | 4 days |
| Nov 28, 3:52 AM MST | Winter Weather Advisory | PUB | 55 hr |
| Nov 28, 2:36 PM MST | High Wind Watch | PUB | 21 hr |
| Nov 28, 2:36 PM MST | High Wind Warning | PUB | 52 hr |
| Nov 29, 11:51 AM MST | High Wind Warning | PUB | 30 hr |
| Nov 29, 1:50 PM MST | Snow Squall Warning | PUB | 25 min |
| Dec 11, 3:06 PM MST | Winter Storm Watch | PUB | 61 hr |
| Dec 12, 4:12 AM MST | Winter Storm Warning | PUB | 4 days |
| Dec 14, 4:02 AM MST | Winter Weather Advisory | PUB | 53 hr |
| Dec 26, 4:04 AM MST | Winter Storm Warning | PUB | 66 hr |
| Dec 26, 2:44 PM MST | Winter Weather Advisory | PUB | 53 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 | 3 |
| Special Weather Statement | 19 |
| Flooding | |
| Flash Flood Warning | 19 |
| Flash Flood Watch | 6 |
| Flood Watch | 1 |
| Areal Flood Advisory | 26 |
| Winter | |
| Snow Squall Warning | 1 |
| Winter Storm Warning | 10 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 23 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 3 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 3 |
| Fire | |
| Red Flag Warning | 13 |
| Fire Weather Watch | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.