Alert archive / Colorado / Montezuma County
Weather alerts in Montezuma County, Colorado, 2015
115 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 115
- Warnings
- 26
- Watches
- 25
- Advisories
- 42
- Busiest month
- April21 alerts
- Busiest day
- July 2, 20155 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Montezuma County in 2015 had a tornado report inside them.
Montezuma County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 0 | 1 | 0% | |||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Junction, CO: tornado warnings | 3 | 1 | 67% | 3 | 33% | 25 min |
| NWS Grand Junction, CO: severe thunderstorm warnings | 45 | 7 | 84% | 22 | 27% | 20 min |
| NWS Grand Junction, CO: flash flood warnings | 17 | 3 | 82% | 19 | 16% | 51 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 3, 2:21 AM MST | Dense Fog Advisory | GJT | 7 hr |
| Jan 10, 1:56 PM MST | Winter Storm Watch | GJT | 25 hr |
| Jan 11, 9:07 AM MST | Dense Fog Advisory | GJT | 3 hr |
| Jan 11, 3:04 PM MST | Winter Storm Warning | GJT | 51 hr |
| Jan 14, 4:56 AM MST | Dense Fog Advisory | GJT | 4 hr |
| Jan 14, 11:50 PM MST | Dense Fog Advisory | GJT | 9 hr |
| Jan 17, 1:36 AM MST | Dense Fog Advisory | GJT | 9 hr |
| Jan 17, 2:53 PM MST | Dense Fog Advisory | GJT | 21 hr |
| Jan 21, 11:06 AM MST | Winter Weather Advisory | GJT | 19 hr |
| Jan 28, 3:19 PM MST | Winter Storm Watch | GJT | 24 hr |
| Jan 29, 3:29 PM MST | Winter Weather Advisory | GJT | 50 hr |
| Jan 31, 8:50 PM MST | Dense Fog Advisory | GJT | 13 hr |
| Feb 20, 4:42 AM MST | Winter Storm Warning | GJT | 4 days |
| Feb 20, 4:42 AM MST | Winter Weather Advisory | GJT | 3 days |
| Feb 20, 4:47 PM MST | Winter Storm Watch | GJT | 23 hr |
| Feb 24, 7:50 PM MST | Dense Fog Advisory | GJT | 8 hr |
| Feb 25, 2:36 PM MST | Winter Storm Watch | GJT | 24 hr |
| Feb 26, 2:12 PM MST | Winter Storm Warning | GJT | 6 days |
| Feb 26, 2:12 PM MST | Winter Weather Advisory | GJT | 3 days |
| Mar 2, 3:31 PM MST | Blizzard Warning | GJT | 12 hr |
| Mar 12, 2:50 PM MDT | Winter Weather Advisory | GJT | 29 hr |
| Mar 18, 7:55 PM MDT | Winter Weather Advisory | GJT | 22 hr |
| Mar 31, 3:00 PM MDT | Fire Weather Watch | GJT | 23 hr |
| Mar 31, 3:00 PM MDT | Red Flag Warning | GJT | 27 hr |
| Apr 1, 2:06 PM MDT | Red Flag Warning | GJT | 31 hr |
| Apr 4, 2:46 PM MDT | Fire Weather Watch | GJT | 12 hr |
| Apr 4, 2:46 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Apr 4, 2:46 PM MDT | Red Flag Warning | GJT | 29 hr |
| Apr 5, 2:40 PM MDT | Fire Weather Watch | GJT | 23 hr |
| Apr 5, 2:40 PM MDT | Red Flag Warning | GJT | 30 hr |
| Apr 6, 2:06 PM MDT | Red Flag Warning | GJT | 31 hr |
| Apr 8, 10:37 AM MDT | Red Flag Warning | GJT | 8 hr |
| Apr 12, 3:10 PM MDT | Fire Weather Watch | GJT | 21 hr |
| Apr 13, 4:35 AM MDT | High Wind Watch | GJT | 17 hr |
| Apr 13, 11:51 AM MDT | Red Flag Warning | GJT | 33 hr |
| Apr 13, 2:56 PM MDT | Wind Advisory | GJT | 36 hr |
| Apr 15, 3:05 AM MDT | Freeze Warning | GJT | 30 hr |
| Apr 15, 3:51 PM MDT | Freeze Watch | GJT | 24 hr |
| Apr 16, 4:11 AM MDT | Winter Weather Advisory | GJT | 68 hr |
| Apr 16, 3:32 PM MDT | Freeze Watch | GJT | 24 hr |
| Apr 16, 3:32 PM MDT | Freeze Warning | GJT | 17 hr |
| Apr 17, 3:07 PM MDT | Freeze Warning | GJT | 18 hr |
| Apr 25, 4:23 AM MDT | Winter Storm Watch | GJT | 10 hr |
| Apr 25, 7:50 AM MDT | Winter Weather Advisory | GJT | 4 hr |
| Apr 25, 2:51 PM MDT | Winter Storm Warning | GJT | 37 hr |
| May 9, 3:14 AM MDT | Winter Weather Advisory | GJT | 32 hr |
| May 12, 3:56 PM MDT | Special Weather Statement | GJT | 64 min |
| May 13, 3:48 PM MDT | Winter Storm Watch | GJT | 23 hr |
| May 14, 2:58 PM MDT | Winter Storm Warning | GJT | 51 hr |
| May 14, 2:58 PM MDT | Winter Weather Advisory | GJT | 66 hr |
| May 14, 6:21 PM MDT | Special Weather Statement | GJT | 39 min |
| May 18, 12:19 PM MDT | Winter Weather Advisory | GJT | 24 hr |
| May 19, 2:52 PM MDT | Tornado Warning | GJT | 23 min |
| May 21, 4:15 AM MDT | Winter Weather Advisory | GJT | 26 hr |
| May 23, 3:36 PM MDT | Winter Weather Advisory | GJT | 12 hr |
| May 25, 1:23 PM MDT | Special Weather Statement | GJT | 52 min |
| May 25, 2:04 PM MDT | Special Weather Statement | GJT | 41 min |
| Jun 3, 5:55 PM MDT | Flash Flood Watch | GJT | 5 days |
| Jun 6, 10:05 PM MDT | Areal Flood Advisory | GJT | 6 hr |
| Jun 9, 2:46 PM MDT | Flash Flood Watch | GJT | 3 days |
| Jun 11, 1:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jun 12, 3:30 PM MDT | Flash Flood Watch | GJT | 31 hr |
| Jun 27, 5:27 PM MDT | Special Weather Statement | GJT | 48 min |
| Jun 29, 6:20 PM MDT | Special Weather Statement | ABQ | 40 min |
| Jul 2, 3:48 PM MDT | Special Weather Statement | GJT | 42 min |
| Jul 2, 4:32 PM MDT | Special Weather Statement | GJT | 28 min |
| Jul 2, 5:02 PM MDT | Special Weather Statement | GJT | 43 min |
| Jul 2, 5:22 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 2, 5:23 PM MDT | Special Weather Statement | GJT | 52 min |
| Jul 3, 5:43 PM MDT | Special Weather Statement | GJT | 32 min |
| Jul 3, 6:11 PM MDT | Special Weather Statement | GJT | 49 min |
| Jul 6, 1:24 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 7, 12:26 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 7, 2:38 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 7, 3:15 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 12, 4:24 PM MDT | Special Weather Statement | GJT | 36 min |
| Jul 12, 5:08 PM MDT | Special Weather Statement | GJT | 37 min |
| Jul 15, 5:33 PM MDT | Special Weather Statement | GJT | 42 min |
| Jul 31, 5:11 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 31, 5:13 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Aug 2, 4:52 AM MDT | Flash Flood Watch | GJT | 18 hr |
| Aug 11, 3:27 AM MDT | Flash Flood Watch | GJT | 21 hr |
| Aug 18, 4:37 AM MDT | Red Flag Warning | GJT | 16 hr |
| Sep 4, 5:28 PM MDT | Special Weather Statement | GJT | 47 min |
| Oct 1, 3:02 PM MDT | Red Flag Warning | GJT | 28 hr |
| Oct 5, 9:03 AM MDT | Flash Flood Watch | GJT | 15 hr |
| Oct 5, 12:39 PM MDT | Special Weather Statement | GJT | 51 min |
| Oct 5, 12:46 PM MDT | Special Weather Statement | GJT | 44 min |
| Oct 5, 3:29 PM MDT | Special Weather Statement | GJT | 46 min |
| Oct 5, 4:30 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Oct 6, 5:33 PM MDT | Special Weather Statement | GJT | 27 min |
| Oct 19, 3:38 AM MDT | Areal Flood Advisory | GJT | 6 hr |
| Oct 19, 3:46 AM MDT | Flash Flood Watch | GJT | 41 hr |
| Oct 20, 1:56 PM MDT | Winter Weather Advisory | GJT | 18 hr |
| Oct 20, 4:38 PM MDT | Special Weather Statement | GJT | 37 min |
| Oct 21, 1:44 PM MDT | Winter Weather Advisory | GJT | 46 hr |
| Oct 26, 3:02 PM MDT | Freeze Watch | GJT | 21 hr |
| Oct 27, 6:32 AM MDT | Freeze Warning | GJT | 2 hr |
| Oct 27, 12:11 PM MDT | Freeze Warning | GJT | 21 hr |
| Nov 2, 4:30 AM MST | Winter Storm Watch | GJT | 31 hr |
| Nov 3, 4:50 AM MST | Winter Storm Warning | GJT | 61 hr |
| Nov 3, 4:51 AM MST | Wind Advisory | GJT | 13 hr |
| Nov 4, 9:07 AM MST | Winter Weather Advisory | GJT | 30 hr |
| Nov 9, 4:06 PM MST | Winter Weather Advisory | GJT | 44 hr |
| Nov 14, 1:36 PM MST | Winter Storm Watch | GJT | 27 hr |
| Nov 15, 1:04 AM MST | Winter Storm Warning | GJT | 55 hr |
| Nov 15, 4:00 AM MST | Winter Weather Advisory | GJT | 52 hr |
| Nov 26, 9:13 AM MST | Winter Weather Advisory | GJT | 48 hr |
| Dec 10, 3:26 PM MST | Winter Weather Advisory | GJT | 57 hr |
| Dec 13, 3:33 PM MST | Winter Weather Advisory | GJT | 53 hr |
| Dec 14, 1:40 PM MST | Winter Storm Warning | GJT | 43 hr |
| Dec 20, 5:00 AM MST | Winter Storm Watch | GJT | 32 hr |
| Dec 21, 5:14 AM MST | Winter Storm Warning | GJT | 63 hr |
| Dec 23, 2:09 PM MST | Winter Storm Warning | GJT | 67 hr |
| Dec 23, 2:09 PM MST | Winter Weather Advisory | GJT | 67 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 | |
| Tornado Warning | 1 |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 21 |
| Flooding | |
| Flash Flood Watch | 7 |
| Areal Flood Advisory | 10 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 10 |
| Winter Storm Watch | 9 |
| Winter Weather Advisory | 22 |
| Cold | |
| Freeze Warning | 5 |
| Freeze Watch | 3 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 9 |
| Fire Weather Watch | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.