Alert archive / Colorado / La Plata County
Weather alerts in La Plata County, Colorado, 2013
126 weather alerts in 2013, 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 2013. Tap one for its archive.
- Alerts
- 126
- Warnings
- 55
- Watches
- 36
- Advisories
- 25
- Busiest month
- September25 alerts
- Busiest day
- September 22, 201313 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, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 7 | 22% | 16 | 81% | 24 min |
| Flash flood warnings | 6 | 3 | 50% | 10 | 60% | 78 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Junction, CO: tornado warnings | 0 | 1 | 0% | |||
| NWS Grand Junction, CO: severe thunderstorm warnings | 31 | 15 | 52% | 49 | 61% | 22 min |
| NWS Grand Junction, CO: flash flood warnings | 59 | 20 | 66% | 99 | 31% | 72 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, 5:37 AM MST | Winter Storm Watch | GJT | 18 hr |
| Jan 9, 11:14 PM MST | Winter Storm Warning | GJT | 45 hr |
| Jan 9, 11:14 PM MST | Winter Weather Advisory | GJT | 55 hr |
| Jan 25, 4:59 AM MST | Winter Storm Warning | GJT | 58 hr |
| Jan 26, 3:16 PM MST | Winter Storm Watch | GJT | 24 hr |
| Jan 27, 5:30 AM MST | Winter Storm Warning | GJT | 5 days |
| Feb 7, 4:49 AM MST | Winter Storm Watch | GJT | 17 hr |
| Feb 7, 9:59 PM MST | Winter Storm Warning | GJT | 4 days |
| Feb 7, 9:59 PM MST | Winter Weather Advisory | GJT | 4 days |
| Feb 18, 3:59 PM MST | Winter Storm Watch | GJT | 23 hr |
| Feb 19, 3:05 PM MST | Winter Weather Advisory | GJT | 51 hr |
| Feb 22, 3:07 PM MST | Winter Weather Advisory | GJT | 53 hr |
| Mar 2, 2:55 PM MST | Winter Weather Advisory | GJT | 51 hr |
| Mar 6, 3:22 AM MST | Winter Storm Watch | GJT | 45 hr |
| Mar 7, 1:08 AM MST | Winter Storm Warning | GJT | 68 hr |
| Mar 8, 12:04 AM MST | Winter Weather Advisory | GJT | 42 hr |
| Mar 20, 3:51 AM MDT | Winter Weather Advisory | GJT | 36 hr |
| Apr 6, 7:34 PM MDT | Winter Storm Watch | GJT | 26 hr |
| Apr 7, 2:23 PM MDT | Red Flag Warning | GJT | 31 hr |
| Apr 7, 9:34 PM MDT | Winter Storm Warning | GJT | 48 hr |
| Apr 7, 9:34 PM MDT | Winter Weather Advisory | GJT | 48 hr |
| Apr 8, 4:48 AM MDT | Wind Advisory | GJT | 16 hr |
| Apr 14, 2:37 PM MDT | Winter Weather Advisory | GJT | 3 days |
| Apr 16, 4:20 AM MDT | Red Flag Warning | GJT | 16 hr |
| Apr 16, 4:20 AM MDT | Wind Advisory | GJT | 16 hr |
| Apr 22, 2:44 AM MDT | Red Flag Warning | GJT | 17 hr |
| Apr 23, 2:53 AM MDT | Red Flag Warning | GJT | 17 hr |
| Apr 28, 3:04 PM MDT | Fire Weather Watch | GJT | 15 hr |
| Apr 29, 5:54 AM MDT | Red Flag Warning | GJT | 39 hr |
| Apr 29, 3:32 PM MDT | Wind Advisory | GJT | 28 hr |
| Apr 30, 3:08 PM MDT | Red Flag Warning | GJT | 29 hr |
| May 7, 2:12 PM MDT | Winter Weather Advisory | GJT | 52 hr |
| May 15, 2:12 PM MDT | Red Flag Warning | GJT | 29 hr |
| May 16, 12:45 AM MDT | Fire Weather Watch | GJT | 12 hr |
| May 16, 12:22 PM MDT | Red Flag Warning | GJT | 32 hr |
| May 21, 2:54 AM MDT | Fire Weather Watch | GJT | 12 hr |
| May 21, 2:53 PM MDT | Red Flag Warning | GJT | 3 days |
| May 22, 8:54 PM MDT | Fire Weather Watch | GJT | 17 hr |
| May 23, 2:14 PM MDT | Fire Weather Watch | GJT | 24 hr |
| May 24, 2:19 PM MDT | Red Flag Warning | GJT | 31 hr |
| May 25, 5:45 AM MDT | Fire Weather Watch | GJT | 8 hr |
| May 25, 1:35 PM MDT | Red Flag Warning | GJT | 31 hr |
| May 27, 6:00 AM MDT | Fire Weather Watch | GJT | 9 hr |
| May 27, 2:31 PM MDT | Red Flag Warning | GJT | 28 hr |
| May 29, 2:40 PM MDT | Fire Weather Watch | GJT | 25 hr |
| May 29, 2:40 PM MDT | Fire Weather Watch | GJT | 15 hr |
| May 30, 5:52 AM MDT | Red Flag Warning | GJT | 14 hr |
| May 30, 3:27 PM MDT | Red Flag Warning | GJT | 29 hr |
| Jun 3, 5:41 PM MDT | Red Flag Warning | GJT | 26 hr |
| Jun 7, 2:52 PM MDT | Red Flag Warning | GJT | 29 hr |
| Jun 9, 2:47 PM MDT | Fire Weather Watch | GJT | 15 hr |
| Jun 9, 2:47 PM MDT | Red Flag Warning | GJT | 29 hr |
| Jun 10, 5:32 AM MDT | Red Flag Warning | GJT | 38 hr |
| Jun 12, 5:04 AM MDT | Red Flag Warning | GJT | 39 hr |
| Jun 14, 3:00 PM MDT | Red Flag Warning | GJT | 29 hr |
| Jun 16, 2:34 PM MDT | Fire Weather Watch | GJT | 25 hr |
| Jun 17, 3:20 PM MDT | Red Flag Warning | GJT | 3 days |
| Jun 20, 5:33 AM MDT | Red Flag Warning | GJT | 39 hr |
| Jun 21, 3:10 PM MDT | Red Flag Warning | GJT | 30 hr |
| Jun 22, 3:40 PM MDT | Fire Weather Watch | GJT | 23 hr |
| Jun 23, 2:21 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jun 27, 2:52 PM MDT | Red Flag Warning | GJT | 30 hr |
| Jun 28, 3:36 PM MDT | Red Flag Warning | GJT | 29 hr |
| Jun 29, 3:30 PM MDT | Red Flag Warning | GJT | 30 hr |
| Jul 2, 2:26 PM MDT | Special Weather Statement | GJT | 49 min |
| Jul 2, 2:38 PM MDT | Severe Thunderstorm Warning | GJT | 52 min |
| Jul 2, 4:42 PM MDT | Severe Thunderstorm Warning | GJT | 33 min |
| Jul 12, 3:15 AM MDT | Flash Flood Watch | GJT | 18 hr |
| Jul 14, 2:38 PM MDT | Flash Flood Watch | GJT | 33 hr |
| Jul 19, 8:26 AM MDT | Flash Flood Watch | GJT | 12 hr |
| Jul 23, 6:13 PM MDT | Special Weather Statement | ABQ | 47 min |
| Jul 26, 2:31 PM MDT | Special Weather Statement | GJT | 29 min |
| Jul 26, 3:35 PM MDT | Flash Flood Watch | GJT | 30 hr |
| Jul 28, 11:23 PM MDT | Flash Flood Watch | GJT | 22 hr |
| Aug 1, 3:02 AM MDT | Flash Flood Watch | GJT | 17 hr |
| Aug 5, 2:34 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Aug 6, 2:46 PM MDT | Flash Flood Watch | GJT | 32 hr |
| Aug 10, 2:29 PM MDT | Special Weather Statement | GJT | 46 min |
| Aug 10, 3:30 PM MDT | Special Weather Statement | GJT | 45 min |
| Aug 10, 3:40 PM MDT | Severe Thunderstorm Warning | GJT | 50 min |
| Aug 23, 3:35 PM MDT | Flood Watch | GJT | 3 days |
| Aug 25, 6:32 PM MDT | Flash Flood Warning | GJT | 6 hr |
| Sep 8, 4:02 AM MDT | Flash Flood Watch | GJT | 68 hr |
| Sep 14, 10:40 AM MDT | Flash Flood Watch | GJT | 34 hr |
| Sep 18, 5:12 PM MDT | Special Weather Statement | GJT | 48 min |
| Sep 18, 5:31 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Sep 18, 5:32 PM MDT | Severe Thunderstorm Warning | GJT | 43 min |
| Sep 18, 6:13 PM MDT | Severe Thunderstorm Warning | GJT | 47 min |
| Sep 18, 6:15 PM MDT | Flash Flood Warning | GJT | 3 hr |
| Sep 21, 2:50 PM MDT | Flash Flood Watch | GJT | 30 hr |
| Sep 22, 9:46 AM MDT | Mesoscale Discussion | SPC | 44 min |
| Sep 22, 10:53 AM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 22, 12:23 PM MDT | Flash Flood Warning | GJT | 6 hr |
| Sep 22, 1:16 PM MDT | Severe Thunderstorm Warning | GJT | 44 min |
| Sep 22, 1:20 PM MDT | Special Weather Statement | GJT | 40 min |
| Sep 22, 1:49 PM MDT | Severe Thunderstorm Warning | GJT | 41 min |
| Sep 22, 2:08 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Sep 22, 2:18 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Sep 22, 2:26 PM MDT | Severe Thunderstorm Warning | GJT | 49 min |
| Sep 22, 2:35 PM MDT | Special Weather Statement | ABQ | 25 min |
| Sep 22, 2:59 PM MDT | Severe Thunderstorm Warning | GJT | 46 min |
| Sep 22, 3:08 PM MDT | Flash Flood Warning | GJT | 3 hr |
| Sep 22, 5:08 PM MDT | Flash Flood Warning | GJT | 3 hr |
| Sep 22, 7:58 PM MDT | Flash Flood Warning | GJT | 6 hr |
| Sep 23, 2:00 AM MDT | Areal Flood Advisory | GJT | 6 hr |
| Sep 26, 4:33 AM MDT | Freeze Watch | GJT | 33 hr |
| Sep 27, 1:23 PM MDT | Freeze Warning | GJT | 20 hr |
| Oct 8, 2:57 PM MDT | Winter Storm Watch | GJT | 39 hr |
| Oct 9, 4:33 AM MDT | Winter Storm Warning | GJT | 59 hr |
| Oct 15, 3:35 AM MDT | Winter Weather Advisory | GJT | 28 hr |
| Oct 27, 3:05 PM MDT | Winter Storm Watch | GJT | 23 hr |
| Oct 28, 3:24 AM MDT | Winter Storm Warning | GJT | 48 hr |
| Oct 30, 9:55 AM MDT | Winter Weather Advisory | GJT | 11 hr |
| Nov 4, 3:45 AM MST | Winter Weather Advisory | GJT | 32 hr |
| Nov 14, 3:38 PM MST | Winter Weather Advisory | GJT | 67 hr |
| Nov 15, 4:40 AM MST | Winter Storm Warning | GJT | 54 hr |
| Nov 20, 2:54 AM MST | Winter Storm Watch | GJT | 36 hr |
| Nov 20, 2:54 AM MST | Winter Weather Advisory | GJT | 13 hr |
| Nov 20, 3:24 PM MST | Winter Storm Warning | GJT | 4 days |
| Nov 20, 3:24 PM MST | Winter Weather Advisory | GJT | 72 hr |
| Dec 1, 4:03 PM MST | Winter Storm Watch | GJT | 46 hr |
| Dec 2, 5:04 AM MST | Winter Storm Warning | GJT | 66 hr |
| Dec 2, 3:30 PM MST | Winter Weather Advisory | GJT | 50 hr |
| Dec 5, 9:12 PM MST | Winter Storm Watch | GJT | 31 hr |
| Dec 6, 2:55 PM MST | Winter Storm Warning | GJT | 47 hr |
| Dec 20, 8:11 AM MST | Winter Weather Advisory | GJT | 16 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 | 9 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 8 |
| Flooding | |
| Flash Flood Warning | 6 |
| Flash Flood Watch | 10 |
| Flood Watch | 1 |
| Areal Flood Advisory | 4 |
| Winter | |
| Winter Storm Warning | 12 |
| Winter Storm Watch | 11 |
| Winter Weather Advisory | 18 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 27 |
| Fire Weather Watch | 12 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.