Alert archive / Colorado / La Plata County
Weather alerts in La Plata County, Colorado, 2024
95 weather alerts in 2024, 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 2024. Tap one for its archive.
- Alerts
- 95
- Warnings
- 19
- Watches
- 17
- Advisories
- 29
- Busiest month
- June16 alerts
- Busiest day
- September 17, 20248 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, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 6 | 0 | 100% | 7 | 0% | |
| Flash flood warnings | 0 | 1 | 0% |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Junction, CO: tornado warnings | 0 | 2 | 0% | |||
| NWS Grand Junction, CO: severe thunderstorm warnings | 90 | 9 | 90% | 42 | 26% | 12 min |
| NWS Grand Junction, CO: flash flood warnings | 57 | 8 | 86% | 42 | 26% | 43 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 2, 1:43 PM MST | Winter Weather Advisory | GJT | 57 hr |
| Jan 5, 1:58 PM MST | Winter Storm Watch | GJT | 13 hr |
| Jan 6, 3:21 AM MST | Winter Storm Warning | GJT | 53 hr |
| Jan 10, 1:12 PM MST | Winter Weather Advisory | GJT | 28 hr |
| Jan 12, 2:47 PM MST | Winter Storm Watch | GJT | 24 hr |
| Jan 13, 2:22 PM MST | Winter Storm Warning | GJT | 51 hr |
| Jan 13, 2:22 PM MST | Winter Weather Advisory | GJT | 40 hr |
| Jan 24, 1:10 PM MST | Winter Weather Advisory | GJT | 40 hr |
| Jan 30, 1:20 PM MST | Winter Storm Watch | GJT | 49 hr |
| Feb 1, 2:07 AM MST | Winter Storm Warning | GJT | 3 days |
| Feb 5, 1:56 AM MST | Winter Storm Watch | GJT | 13 hr |
| Feb 5, 3:19 PM MST | Winter Storm Warning | GJT | 71 hr |
| Feb 6, 3:04 PM MST | Winter Weather Advisory | GJT | 3 days |
| Feb 24, 12:53 PM MST | Winter Storm Watch | GJT | 25 hr |
| Feb 25, 2:11 PM MST | Winter Storm Warning | GJT | 56 hr |
| Feb 25, 2:11 PM MST | Winter Weather Advisory | GJT | 18 hr |
| Feb 29, 1:37 PM MST | Wind Advisory | GJT | 63 hr |
| Mar 1, 2:39 PM MST | Winter Weather Advisory | GJT | 56 hr |
| Mar 11, 1:42 PM MDT | Winter Weather Advisory | GJT | 64 hr |
| Mar 12, 2:37 PM MDT | Winter Storm Watch | GJT | 13 hr |
| Mar 13, 3:22 AM MDT | Winter Storm Warning | GJT | 3 days |
| Mar 15, 2:23 PM MDT | Winter Weather Advisory | GJT | 43 hr |
| Mar 23, 3:07 AM MDT | Winter Weather Advisory | GJT | 51 hr |
| Mar 28, 2:07 PM MDT | Winter Weather Advisory | GJT | 4 days |
| Apr 3, 1:29 PM MDT | High Wind Watch | GJT | 25 hr |
| Apr 4, 2:24 PM MDT | Wind Advisory | GJT | 31 hr |
| Apr 5, 2:34 AM MDT | Winter Weather Advisory | GJT | 55 hr |
| Apr 6, 2:28 AM MDT | Wind Advisory | GJT | 19 hr |
| Apr 25, 2:30 PM MDT | Winter Weather Advisory | GJT | 64 hr |
| May 4, 3:23 PM MDT | Wind Advisory | GJT | 33 hr |
| May 6, 2:44 PM MDT | Wind Advisory | GJT | 30 hr |
| Jun 14, 2:25 PM MDT | Fire Weather Watch | GJT | 12 hr |
| Jun 15, 2:33 AM MDT | Red Flag Warning | GJT | 43 hr |
| Jun 15, 2:33 AM MDT | Red Flag Warning | GJT | 67 hr |
| Jun 18, 2:21 PM MDT | Fire Weather Watch | GJT | 16 hr |
| Jun 20, 2:13 AM MDT | Flood Watch | GJT | 44 hr |
| Jun 20, 12:06 PM MDT | Severe Thunderstorm Warning | GJT | 24 min |
| Jun 20, 12:09 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 12:33 PM MDT | Severe Thunderstorm Warning | GJT | 27 min |
| Jun 20, 3:18 PM MDT | Severe Thunderstorm Warning | GJT | 15 min |
| Jun 21, 11:10 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 21, 12:02 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 21, 10:48 PM MDT | Special Weather Statement | GJT | 27 min |
| Jun 26, 1:31 PM MDT | Flood Watch | GJT | 30 hr |
| Jun 27, 1:44 PM MDT | Severe Thunderstorm Warning | GJT | 31 min |
| Jun 29, 2:02 PM MDT | Flood Watch | GJT | 52 hr |
| Jun 30, 5:51 PM MDT | Special Weather Statement | GJT | 24 min |
| Jun 30, 6:16 PM MDT | Special Weather Statement | GJT | 29 min |
| Jun 30, 6:44 PM MDT | Special Weather Statement | GJT | 31 min |
| Jul 6, 3:12 PM MDT | Fire Weather Watch | GJT | 11 hr |
| Jul 7, 2:30 AM MDT | Red Flag Warning | GJT | 19 hr |
| Jul 11, 2:14 PM MDT | Special Weather Statement | GJT | 31 min |
| Jul 12, 3:20 PM MDT | Special Weather Statement | GJT | 25 min |
| Jul 18, 3:05 PM MDT | Areal Flood Advisory | GJT | 85 min |
| Jul 21, 1:50 PM MDT | Areal Flood Advisory | GJT | 115 min |
| Jul 21, 1:52 PM MDT | Special Weather Statement | GJT | 23 min |
| Jul 21, 2:23 PM MDT | Special Weather Statement | GJT | 22 min |
| Jul 21, 2:43 PM MDT | Areal Flood Advisory | GJT | 110 min |
| Jul 21, 3:04 PM MDT | Special Weather Statement | GJT | 26 min |
| Aug 5, 4:46 PM MDT | Special Weather Statement | GJT | 29 min |
| Aug 7, 3:10 PM MDT | Special Weather Statement | GJT | 35 min |
| Aug 10, 10:46 PM MDT | Special Weather Statement | GJT | 29 min |
| Aug 12, 2:15 AM MDT | Special Weather Statement | GJT | 30 min |
| Aug 21, 8:35 PM MDT | Special Weather Statement | GJT | 40 min |
| Aug 21, 9:09 PM MDT | Special Weather Statement | GJT | 51 min |
| Aug 23, 4:21 PM MDT | Special Weather Statement | ABQ | 24 min |
| Aug 23, 6:42 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Aug 24, 2:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Aug 25, 2:34 PM MDT | Severe Thunderstorm Warning | GJT | 26 min |
| Aug 25, 3:03 PM MDT | Special Weather Statement | GJT | 27 min |
| Aug 25, 3:37 PM MDT | Areal Flood Advisory | GJT | 113 min |
| Aug 25, 5:03 PM MDT | Special Weather Statement | GJT | 42 min |
| Sep 16, 6:27 PM MDT | Special Weather Statement | GJT | 33 min |
| Sep 16, 6:53 PM MDT | Special Weather Statement | GJT | 37 min |
| Sep 16, 7:02 PM MDT | Severe Thunderstorm Warning | GJT | 28 min |
| Sep 17, 8:47 AM MDT | Special Weather Statement | GJT | 28 min |
| Sep 17, 9:25 AM MDT | Special Weather Statement | GJT | 20 min |
| Sep 17, 10:30 AM MDT | Special Weather Statement | GJT | 30 min |
| Sep 17, 10:33 AM MDT | Mesoscale Discussion | SPC | 117 min |
| Sep 17, 11:54 AM MDT | Special Weather Statement | GJT | 36 min |
| Sep 21, 12:37 PM MDT | Special Weather Statement | GJT | 23 min |
| Oct 16, 1:45 PM MDT | Winter Storm Watch | GJT | 24 hr |
| Oct 17, 2:22 AM MDT | Winter Storm Warning | GJT | 4 days |
| Oct 20, 1:50 PM MDT | Freeze Warning | GJT | 13 hr |
| Oct 21, 2:55 AM MDT | Freeze Watch | GJT | 11 hr |
| Oct 21, 1:42 PM MDT | Freeze Warning | GJT | 20 hr |
| Oct 27, 3:03 PM MDT | Winter Weather Advisory | GJT | 3 days |
| Nov 2, 3:00 PM MDT | Winter Weather Advisory | GJT | 45 hr |
| Nov 5, 2:29 AM MST | Winter Weather Advisory | GJT | 63 hr |
| Nov 5, 8:07 PM MST | Special Weather Statement | GJT | 38 min |
| Nov 24, 2:10 PM MST | Winter Storm Watch | GJT | 12 hr |
| Nov 25, 1:52 AM MST | Winter Storm Warning | GJT | 60 hr |
| Dec 25, 2:15 PM MST | Winter Weather Advisory | GJT | 64 hr |
| Dec 27, 2:45 AM MST | Dense Fog Advisory | GJT | 8 hr |
| Dec 28, 2:52 AM MST | Dense Fog Advisory | GJT | 9 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 | 6 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 26 |
| Flooding | |
| Flood Watch | 3 |
| Areal Flood Advisory | 5 |
| Winter | |
| Winter Storm Warning | 8 |
| Winter Storm Watch | 8 |
| Winter Weather Advisory | 17 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.