Alert archive / Colorado / La Plata County
Weather alerts in La Plata County, Colorado, 2023
92 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 92
- Warnings
- 25
- Watches
- 24
- Advisories
- 29
- Busiest month
- June19 alerts
- Busiest day
- June 25, 20235 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, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 0 | 3 | 0% | |||
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Junction, CO: severe thunderstorm warnings | 14 | 1 | 93% | 26 | 4% | 8 min |
| NWS Grand Junction, CO: flash flood warnings | 13 | 2 | 85% | 3 | 100% | 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 9, 1:43 PM MST | Winter Weather Advisory | GJT | 55 hr |
| Jan 13, 2:00 PM MST | Winter Weather Advisory | GJT | 63 hr |
| Jan 14, 1:58 AM MST | Winter Storm Warning | GJT | 45 hr |
| Jan 16, 2:58 AM MST | Winter Storm Warning | GJT | 56 hr |
| Jan 22, 2:32 AM MST | Winter Weather Advisory | GJT | 38 hr |
| Feb 12, 2:09 PM MST | Winter Storm Watch | GJT | 24 hr |
| Feb 12, 2:09 PM MST | Winter Weather Advisory | GJT | 40 hr |
| Feb 13, 2:37 PM MST | Winter Storm Warning | GJT | 51 hr |
| Feb 13, 3:18 PM MST | Special Weather Statement | ABQ | 27 min |
| Feb 19, 2:40 PM MST | Winter Storm Watch | GJT | 25 hr |
| Feb 20, 3:40 PM MST | Winter Storm Warning | GJT | 4 days |
| Feb 20, 3:40 PM MST | Winter Weather Advisory | GJT | 4 days |
| Feb 22, 8:26 AM MST | Mesoscale Discussion | SPC | 4 hr |
| Feb 25, 2:13 PM MST | Winter Weather Advisory | GJT | 3 days |
| Feb 27, 4:14 PM MST | Winter Storm Watch | GJT | 21 hr |
| Feb 28, 1:41 PM MST | Winter Storm Warning | GJT | 40 hr |
| Mar 4, 2:31 PM MST | Wind Advisory | GJT | 29 hr |
| Mar 9, 2:18 AM MST | Winter Storm Watch | GJT | 11 hr |
| Mar 9, 1:43 PM MST | Winter Storm Warning | GJT | 63 hr |
| Mar 13, 2:50 PM MDT | Winter Storm Watch | GJT | 13 hr |
| Mar 14, 3:23 AM MDT | Winter Storm Warning | GJT | 57 hr |
| Mar 18, 3:05 PM MDT | Winter Storm Watch | GJT | 37 hr |
| Mar 18, 3:05 PM MDT | Winter Weather Advisory | GJT | 65 hr |
| Mar 19, 3:04 PM MDT | Winter Storm Warning | GJT | 3 days |
| Mar 24, 7:27 PM MDT | Special Weather Statement | GJT | 63 min |
| Mar 29, 3:12 AM MDT | Winter Weather Advisory | GJT | 69 hr |
| Mar 29, 3:24 PM MDT | Wind Advisory | GJT | 27 hr |
| Apr 1, 2:44 AM MDT | High Wind Watch | GJT | 24 hr |
| Apr 2, 2:27 AM MDT | High Wind Warning | GJT | 45 hr |
| Apr 2, 2:26 PM MDT | Wind Advisory | GJT | 33 hr |
| Apr 2, 2:57 PM MDT | Winter Weather Advisory | GJT | 54 hr |
| Apr 13, 3:15 PM MDT | Winter Weather Advisory | GJT | 42 hr |
| Apr 17, 1:39 PM MDT | Wind Advisory | GJT | 31 hr |
| Apr 23, 2:11 PM MDT | Winter Weather Advisory | GJT | 64 hr |
| Apr 25, 11:58 AM MDT | Special Weather Statement | GJT | 32 min |
| May 18, 3:16 PM MDT | River Flood Advisory | GJT | 37 hr |
| Jun 6, 4:52 PM MDT | Special Weather Statement | GJT | 23 min |
| Jun 6, 5:16 PM MDT | Special Weather Statement | GJT | 29 min |
| Jun 6, 5:38 PM MDT | Special Weather Statement | GJT | 37 min |
| Jun 6, 5:45 PM MDT | Special Weather Statement | GJT | 30 min |
| Jun 6, 6:01 PM MDT | Special Weather Statement | GJT | 29 min |
| Jun 7, 12:40 PM MDT | Special Weather Statement | GJT | 35 min |
| Jun 21, 2:15 PM MDT | Fire Weather Watch | GJT | 12 hr |
| Jun 21, 2:15 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Jun 21, 2:15 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jun 25, 1:59 AM MDT | Fire Weather Watch | GJT | 12 hr |
| Jun 25, 1:59 AM MDT | Fire Weather Watch | GJT | 12 hr |
| Jun 25, 1:29 PM MDT | Fire Weather Watch | GJT | 13 hr |
| Jun 25, 1:29 PM MDT | Red Flag Warning | GJT | 32 hr |
| Jun 25, 1:29 PM MDT | Red Flag Warning | GJT | 56 hr |
| Jun 26, 2:24 PM MDT | Wind Advisory | GJT | 31 hr |
| Jun 27, 2:34 AM MDT | Fire Weather Watch | GJT | 11 hr |
| Jun 27, 1:17 PM MDT | Fire Weather Watch | GJT | 12 hr |
| Jun 27, 1:17 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jun 28, 1:06 AM MDT | Red Flag Warning | GJT | 43 hr |
| Jul 2, 2:59 PM MDT | Fire Weather Watch | GJT | 11 hr |
| Jul 3, 2:13 AM MDT | Red Flag Warning | GJT | 43 hr |
| Jul 5, 2:35 AM MDT | Fire Weather Watch | GJT | 13 hr |
| Jul 5, 3:17 PM MDT | Fire Weather Watch | GJT | 23 hr |
| Jul 5, 3:17 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jul 6, 2:29 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jul 7, 4:00 AM MDT | Fire Weather Watch | GJT | 10 hr |
| Jul 7, 2:07 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jul 30, 5:14 PM MDT | Special Weather Statement | GJT | 31 min |
| Aug 5, 2:26 PM MDT | Fire Weather Watch | GJT | 12 hr |
| Aug 5, 2:26 PM MDT | Fire Weather Watch | GJT | 48 hr |
| Aug 5, 2:26 PM MDT | Red Flag Warning | GJT | 31 hr |
| Aug 6, 2:45 AM MDT | Red Flag Warning | GJT | 42 hr |
| Aug 7, 2:09 PM MDT | Red Flag Warning | GJT | 31 hr |
| Aug 16, 1:15 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Aug 26, 2:24 PM MDT | Areal Flood Advisory | GJT | 2 hr |
| Sep 18, 4:47 PM MDT | Special Weather Statement | GJT | 28 min |
| Sep 19, 2:31 PM MDT | Special Weather Statement | GJT | 29 min |
| Sep 19, 4:20 PM MDT | Areal Flood Advisory | GJT | 8 min |
| Sep 19, 4:21 PM MDT | Special Weather Statement | GJT | 24 min |
| Sep 19, 4:28 PM MDT | Flash Flood Warning | GJT | 95 min |
| Sep 30, 2:14 PM MDT | Wind Advisory | GJT | 29 hr |
| Oct 3, 2:55 PM MDT | Freeze Watch | GJT | 24 hr |
| Oct 10, 2:06 PM MDT | Wind Advisory | GJT | 29 hr |
| Oct 11, 2:19 PM MDT | Freeze Watch | GJT | 12 hr |
| Oct 12, 2:07 AM MDT | Freeze Warning | GJT | 31 hr |
| Oct 27, 2:11 PM MDT | Winter Weather Advisory | GJT | 47 hr |
| Nov 18, 2:43 PM MST | Winter Weather Advisory | GJT | 38 hr |
| Nov 22, 2:39 AM MST | Winter Weather Advisory | GJT | 3 days |
| Nov 22, 1:26 PM MST | Winter Storm Watch | GJT | 13 hr |
| Nov 23, 1:58 AM MST | Winter Storm Warning | GJT | 57 hr |
| Nov 29, 2:28 PM MST | Winter Weather Advisory | GJT | 4 days |
| Dec 12, 1:42 PM MST | Winter Weather Advisory | GJT | 44 hr |
| Dec 15, 10:00 PM MST | Dense Fog Advisory | GJT | 8 hr |
| Dec 21, 2:38 PM MST | Winter Storm Watch | GJT | 12 hr |
| Dec 22, 2:08 AM MST | Winter Storm Warning | GJT | 48 hr |
| Dec 23, 7:46 AM MST | Dense Fog Advisory | GJT | 3 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 | |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 13 |
| Flooding | |
| Flash Flood Warning | 1 |
| Areal Flood Advisory | 3 |
| River Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 10 |
| Winter Storm Watch | 8 |
| Winter Weather Advisory | 16 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 7 |
| Fire | |
| Red Flag Warning | 12 |
| Fire Weather Watch | 13 |
| 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 archive20222024
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.