Alert archive / Colorado / Montezuma County
Weather alerts in Montezuma County, Colorado, 2020
125 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Montezuma County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 125
- Warnings
- 56
- Watches
- 37
- Advisories
- 21
- Busiest month
- June33 alerts
- Busiest day
- June 6, 20207 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Montezuma County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 3 | 25% | 3 | 67% | 14 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Junction, CO: severe thunderstorm warnings | 45 | 22 | 51% | 96 | 35% | 20 min |
| NWS Grand Junction, CO: flash flood warnings | 3 | 2 | 33% | 6 | 50% | 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 10, 2:20 PM MST | Winter Weather Advisory | GJT | 3 days |
| Jan 15, 2:16 PM MST | Winter Storm Watch | GJT | 6 hr |
| Jan 15, 8:29 PM MST | Winter Storm Warning | GJT | 45 hr |
| Feb 1, 4:02 AM MST | Winter Storm Watch | GJT | 23 hr |
| Feb 2, 2:47 AM MST | Winter Weather Advisory | GJT | 63 hr |
| Feb 5, 2:19 AM MST | Winter Weather Advisory | GJT | 63 hr |
| Feb 8, 2:08 PM MST | Winter Weather Advisory | GJT | 40 hr |
| Feb 9, 3:39 AM MST | Winter Storm Watch | GJT | 23 hr |
| Feb 10, 2:24 AM MST | Winter Weather Advisory | GJT | 29 hr |
| Feb 21, 3:22 AM MST | Winter Weather Advisory | GJT | 59 hr |
| Mar 11, 3:00 AM MDT | Winter Storm Watch | GJT | 35 hr |
| Mar 12, 2:07 PM MDT | Winter Storm Warning | GJT | 34 hr |
| Mar 17, 2:29 PM MDT | Winter Weather Advisory | GJT | 64 hr |
| Mar 18, 11:34 AM MDT | Winter Storm Warning | GJT | 35 hr |
| Apr 14, 2:43 PM MDT | Winter Weather Advisory | GJT | 57 hr |
| Apr 25, 2:11 PM MDT | Red Flag Warning | GJT | 30 hr |
| Apr 26, 2:10 AM MDT | Fire Weather Watch | GJT | 25 hr |
| Apr 27, 3:13 AM MDT | Fire Weather Watch | GJT | 11 hr |
| Apr 27, 2:15 PM MDT | Red Flag Warning | GJT | 30 hr |
| Apr 29, 2:12 AM MDT | Fire Weather Watch | GJT | 25 hr |
| Apr 30, 2:54 AM MDT | Red Flag Warning | GJT | 17 hr |
| May 1, 2:13 PM MDT | Fire Weather Watch | GJT | 13 hr |
| May 2, 3:39 AM MDT | Red Flag Warning | GJT | 17 hr |
| May 2, 1:45 PM MDT | Red Flag Warning | GJT | 31 hr |
| May 4, 2:36 PM MDT | Fire Weather Watch | GJT | 11 hr |
| May 5, 1:59 AM MDT | Fire Weather Watch | GJT | 37 hr |
| May 5, 1:59 AM MDT | Red Flag Warning | GJT | 43 hr |
| May 6, 2:44 PM MDT | Red Flag Warning | GJT | 30 hr |
| May 8, 1:46 PM MDT | Red Flag Warning | GJT | 31 hr |
| May 11, 4:00 AM MDT | Fire Weather Watch | GJT | 7 hr |
| May 11, 11:05 AM MDT | Red Flag Warning | GJT | 34 hr |
| May 12, 3:51 AM MDT | Fire Weather Watch | GJT | 10 hr |
| May 12, 2:04 PM MDT | Red Flag Warning | GJT | 31 hr |
| May 16, 3:49 AM MDT | Fire Weather Watch | GJT | 24 hr |
| May 16, 2:19 PM MDT | Fire Weather Watch | GJT | 25 hr |
| May 17, 3:34 AM MDT | Red Flag Warning | GJT | 44 hr |
| May 17, 2:50 PM MDT | Red Flag Warning | GJT | 57 hr |
| May 18, 2:42 PM MDT | Wind Advisory | GJT | 30 hr |
| May 19, 2:45 AM MDT | Fire Weather Watch | GJT | 12 hr |
| May 19, 2:15 PM MDT | Red Flag Warning | GJT | 30 hr |
| May 21, 2:08 AM MDT | Fire Weather Watch | GJT | 12 hr |
| May 21, 2:11 AM MDT | Freeze Watch | GJT | 12 hr |
| May 21, 1:57 PM MDT | Freeze Warning | GJT | 18 hr |
| May 21, 2:03 PM MDT | Red Flag Warning | GJT | 31 hr |
| May 22, 3:11 AM MDT | Fire Weather Watch | GJT | 11 hr |
| May 22, 2:22 PM MDT | Red Flag Warning | GJT | 31 hr |
| May 31, 3:30 PM MDT | Special Weather Statement | GJT | 30 min |
| Jun 5, 3:42 AM MDT | Flash Flood Watch | GJT | 36 hr |
| Jun 5, 2:46 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Jun 5, 3:12 PM MDT | Special Weather Statement | GJT | 48 min |
| Jun 5, 4:25 PM MDT | Special Weather Statement | GJT | 50 min |
| Jun 5, 4:56 PM MDT | Severe Thunderstorm Warning | GJT | 34 min |
| Jun 5, 5:29 PM MDT | Severe Thunderstorm Warning | GJT | 31 min |
| Jun 6, 2:16 AM MDT | Wind Advisory | GJT | 18 hr |
| Jun 6, 7:01 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 9:48 AM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 6, 10:36 AM MDT | Special Weather Statement | GJT | 24 min |
| Jun 6, 10:44 AM MDT | Severe Thunderstorm Warning | GJT | 31 min |
| Jun 6, 11:13 AM MDT | Severe Thunderstorm Warning | GJT | 47 min |
| Jun 6, 2:36 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jun 6, 8:09 PM MDT | Wind Advisory | GJT | 24 hr |
| Jun 7, 1:46 PM MDT | Red Flag Warning | GJT | 30 hr |
| Jun 8, 2:47 PM MDT | Freeze Warning | GJT | 18 hr |
| Jun 11, 2:39 PM MDT | Fire Weather Watch | GJT | 37 hr |
| Jun 13, 3:37 AM MDT | Wind Advisory | GJT | 16 hr |
| Jun 13, 3:46 AM MDT | Fire Weather Watch | GJT | 41 hr |
| Jun 13, 3:46 AM MDT | Red Flag Warning | GJT | 40 hr |
| Jun 13, 12:41 PM MDT | Special Weather Statement | GJT | 49 min |
| Jun 13, 12:54 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 2:17 PM MDT | Special Weather Statement | GJT | 43 min |
| Jun 13, 2:40 PM MDT | Fire Weather Watch | GJT | 48 hr |
| Jun 14, 2:27 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jun 14, 2:27 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jun 16, 3:02 AM MDT | Red Flag Warning | GJT | 41 hr |
| Jun 18, 2:23 AM MDT | Fire Weather Watch | GJT | 12 hr |
| Jun 18, 2:23 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jun 21, 2:47 PM MDT | Red Flag Warning | GJT | 29 hr |
| Jun 22, 1:41 PM MDT | Red Flag Warning | GJT | 30 hr |
| Jun 26, 1:55 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jun 27, 2:22 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jul 4, 2:26 PM MDT | Fire Weather Watch | GJT | 23 hr |
| Jul 5, 1:52 PM MDT | Fire Weather Watch | GJT | 25 hr |
| Jul 5, 1:52 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jul 6, 2:23 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jul 11, 3:19 AM MDT | Fire Weather Watch | GJT | 11 hr |
| Jul 11, 2:12 PM MDT | Red Flag Warning | GJT | 55 hr |
| Jul 12, 2:08 AM MDT | Fire Weather Watch | GJT | 12 hr |
| Jul 12, 1:48 PM MDT | Red Flag Warning | GJT | 54 hr |
| Jul 25, 4:51 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 25, 5:09 PM MDT | Special Weather Statement | GJT | 51 min |
| Jul 25, 6:23 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 27, 2:18 AM MDT | Flash Flood Watch | GJT | 22 hr |
| Jul 27, 6:46 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 27, 7:53 PM MDT | Special Weather Statement | GJT | 37 min |
| Jul 30, 1:38 AM MDT | Red Flag Warning | GJT | 18 hr |
| Aug 10, 2:40 PM MDT | Red Flag Warning | GJT | 29 hr |
| Aug 19, 12:23 PM MDT | Fire Weather Watch | GJT | 15 hr |
| Aug 20, 3:15 AM MDT | Red Flag Warning | GJT | 18 hr |
| Aug 22, 1:17 PM MDT | Special Weather Statement | GJT | 43 min |
| Sep 6, 9:38 PM MDT | Winter Storm Watch | GJT | 6 hr |
| Sep 7, 3:36 AM MDT | Winter Storm Warning | GJT | 3 days |
| Sep 26, 2:04 AM MDT | Fire Weather Watch | GJT | 24 hr |
| Sep 27, 2:33 AM MDT | Red Flag Warning | GJT | 17 hr |
| Sep 28, 2:48 PM MDT | Freeze Warning | GJT | 18 hr |
| Oct 11, 9:54 AM MDT | Freeze Warning | GJT | 24 hr |
| Oct 13, 2:48 PM MDT | Red Flag Warning | GJT | 29 hr |
| Oct 14, 3:58 AM MDT | Fire Weather Watch | GJT | 10 hr |
| Oct 14, 2:16 PM MDT | Red Flag Warning | GJT | 30 hr |
| Oct 15, 4:11 AM MDT | Freeze Warning | GJT | 29 hr |
| Oct 18, 2:00 PM MDT | Freeze Warning | GJT | 19 hr |
| Oct 22, 1:40 AM MDT | Red Flag Warning | GJT | 16 hr |
| Oct 23, 1:36 PM MDT | Winter Storm Watch | GJT | 26 hr |
| Oct 24, 10:11 AM MDT | Freeze Warning | GJT | 50 hr |
| Oct 24, 3:31 PM MDT | Winter Storm Warning | GJT | 50 hr |
| Oct 24, 8:45 PM MDT | Winter Weather Advisory | GJT | 45 hr |
| Nov 5, 1:50 PM MST | Winter Storm Watch | GJT | 25 hr |
| Nov 6, 3:11 PM MST | Winter Storm Warning | GJT | 3 days |
| Nov 6, 7:39 PM MST | Wind Advisory | GJT | 32 hr |
| Nov 8, 3:23 AM MST | Winter Weather Advisory | GJT | 44 hr |
| Nov 14, 2:57 AM MST | Wind Advisory | GJT | 15 hr |
| Nov 22, 3:15 AM MST | Winter Storm Warning | GJT | 56 hr |
| Dec 9, 2:14 PM MST | Winter Weather Advisory | GJT | 55 hr |
| Dec 11, 3:20 AM MST | Winter Weather Advisory | GJT | 48 hr |
| Dec 27, 3:24 AM MST | Winter Storm Watch | GJT | 11 hr |
| Dec 27, 2:41 PM MST | Winter Storm Warning | GJT | 48 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 | 4 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 9 |
| Flooding | |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 8 |
| Winter Storm Watch | 8 |
| Winter Weather Advisory | 12 |
| Cold | |
| Freeze Warning | 7 |
| Freeze Watch | 1 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 37 |
| Fire Weather Watch | 25 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.