Alert archive / Colorado / Montezuma County
Weather alerts in Montezuma County, Colorado, 2010
141 weather alerts in 2010, 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 2010. Tap one for its archive.
- Alerts
- 141
- Warnings
- 51
- Watches
- 50
- Advisories
- 38
- Busiest month
- May26 alerts
- Busiest day
- January 20, 20106 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, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 1 | 75% | 4 | 25% | 31 min |
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Junction, CO: tornado warnings | 1 | 0 | 100% | 0 | ||
| NWS Grand Junction, CO: severe thunderstorm warnings | 49 | 8 | 84% | 38 | 24% | 21 min |
| NWS Grand Junction, CO: flash flood warnings | 20 | 3 | 85% | 10 | 40% | 60 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 16, 3:24 PM MST | Winter Storm Watch | GJT | 24 hr |
| Jan 17, 3:29 PM MST | Winter Storm Warning | GJT | 48 hr |
| Jan 19, 3:30 PM MST | Winter Weather Advisory | GJT | 27 hr |
| Jan 19, 10:05 PM MST | Winter Storm Warning | GJT | 18 hr |
| Jan 20, 3:31 AM MST | Blizzard Watch | GJT | 13 hr |
| Jan 20, 4:09 PM MST | Blizzard Warning | GJT | 42 hr |
| Jan 20, 4:09 PM MST | Winter Storm Watch | GJT | 12 hr |
| Jan 20, 4:09 PM MST | Winter Storm Warning | GJT | 5 days |
| Jan 20, 4:09 PM MST | Winter Weather Advisory | GJT | 60 hr |
| Jan 21, 10:58 AM MST | Flash Flood Watch | GJT | 13 hr |
| Jan 21, 7:24 PM MST | Flash Flood Warning | GJT | 4 hr |
| Jan 21, 11:57 PM MST | Areal Flood Warning | GJT | 10 hr |
| Jan 26, 3:55 PM MST | Winter Storm Watch | GJT | 8 hr |
| Jan 26, 3:55 PM MST | Winter Storm Warning | GJT | 44 hr |
| Jan 28, 3:06 PM MST | Dense Fog Advisory | GJT | 22 hr |
| Feb 5, 2:43 PM MST | Winter Storm Watch | GJT | 13 hr |
| Feb 6, 3:43 AM MST | Winter Storm Warning | GJT | 54 hr |
| Feb 18, 4:06 AM MST | Winter Weather Advisory | GJT | 4 days |
| Feb 18, 9:27 PM MST | Winter Storm Warning | GJT | 4 days |
| Feb 18, 9:36 PM MST | Dense Fog Advisory | GJT | 13 hr |
| Feb 27, 3:22 PM MST | Winter Weather Advisory | GJT | 21 hr |
| Mar 6, 4:47 AM MST | Winter Storm Warning | GJT | 61 hr |
| Mar 9, 3:27 AM MST | Winter Weather Advisory | GJT | 45 hr |
| Mar 13, 3:36 AM MST | Winter Weather Advisory | GJT | 43 hr |
| Mar 15, 3:32 AM MDT | Dense Fog Advisory | GJT | 7 hr |
| Mar 17, 3:27 PM MDT | Winter Weather Advisory | GJT | 61 hr |
| Mar 25, 4:53 AM MDT | Winter Weather Advisory | GJT | 55 hr |
| Mar 30, 4:10 AM MDT | Winter Storm Watch | GJT | 24 hr |
| Mar 30, 8:00 PM MDT | Wind Advisory | GJT | 25 hr |
| Mar 31, 4:16 AM MDT | Winter Storm Warning | GJT | 59 hr |
| Mar 31, 4:16 AM MDT | Winter Weather Advisory | GJT | 48 hr |
| Apr 4, 4:38 AM MDT | Wind Advisory | GJT | 46 hr |
| Apr 4, 3:02 PM MDT | Winter Storm Warning | GJT | 66 hr |
| Apr 6, 7:39 AM MDT | Wind Advisory | GJT | 13 hr |
| Apr 11, 3:16 PM MDT | Wind Advisory | GJT | 33 hr |
| Apr 12, 8:52 AM MDT | Red Flag Warning | GJT | 15 hr |
| Apr 15, 8:29 PM MDT | Winter Storm Watch | GJT | 9 hr |
| Apr 15, 8:32 PM MDT | Flash Flood Watch | GJT | 37 hr |
| Apr 16, 5:35 AM MDT | Winter Storm Warning | GJT | 28 hr |
| Apr 20, 3:09 PM MDT | Wind Advisory | GJT | 27 hr |
| Apr 26, 3:07 PM MDT | High Wind Watch | GJT | 23 hr |
| Apr 27, 2:21 PM MDT | High Wind Warning | GJT | 34 hr |
| Apr 27, 9:17 PM MDT | Winter Weather Advisory | GJT | 3 days |
| Apr 29, 3:27 AM MDT | Wind Advisory | GJT | 15 hr |
| May 1, 2:31 PM MDT | Winter Weather Advisory | GJT | 38 hr |
| May 3, 3:04 PM MDT | Fire Weather Watch | GJT | 23 hr |
| May 4, 8:55 AM MDT | Red Flag Warning | GJT | 11 hr |
| May 4, 2:26 PM MDT | Red Flag Warning | GJT | 30 hr |
| May 5, 6:32 AM MDT | Fire Weather Watch | GJT | 8 hr |
| May 5, 2:49 PM MDT | Red Flag Warning | GJT | 29 hr |
| May 7, 2:58 PM MDT | Fire Weather Watch | GJT | 24 hr |
| May 8, 2:51 PM MDT | Red Flag Warning | GJT | 30 hr |
| May 11, 4:41 AM MDT | Wind Advisory | GJT | 15 hr |
| May 11, 6:32 AM MDT | Red Flag Warning | GJT | 13 hr |
| May 19, 12:26 PM MDT | Fire Weather Watch | GJT | 3 hr |
| May 19, 12:26 PM MDT | Fire Weather Watch | GJT | 26 hr |
| May 19, 3:07 PM MDT | Red Flag Warning | GJT | 54 hr |
| May 20, 2:48 PM MDT | Fire Weather Watch | GJT | 46 hr |
| May 20, 2:48 PM MDT | Red Flag Warning | GJT | 54 hr |
| May 20, 3:03 PM MDT | High Wind Watch | GJT | 13 hr |
| May 21, 4:21 AM MDT | High Wind Warning | GJT | 41 hr |
| May 21, 4:21 AM MDT | Wind Advisory | GJT | 41 hr |
| May 22, 12:50 PM MDT | Fire Weather Watch | GJT | 27 hr |
| May 22, 12:50 PM MDT | Red Flag Warning | GJT | 32 hr |
| May 22, 3:32 PM MDT | Wind Advisory | GJT | 32 hr |
| May 25, 2:15 PM MDT | Fire Weather Watch | GJT | 20 hr |
| May 25, 2:15 PM MDT | Red Flag Warning | GJT | 31 hr |
| May 26, 10:18 AM MDT | Red Flag Warning | GJT | 35 hr |
| May 27, 2:23 PM MDT | Red Flag Warning | GJT | 31 hr |
| May 27, 8:09 PM MDT | Wind Advisory | GJT | 25 hr |
| Jun 8, 2:50 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Jun 9, 2:58 PM MDT | Red Flag Warning | GJT | 30 hr |
| Jun 14, 2:06 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Jun 15, 2:18 PM MDT | Red Flag Warning | GJT | 31 hr |
| Jun 16, 3:05 AM MDT | Wind Advisory | GJT | 18 hr |
| Jun 18, 12:42 PM MDT | Fire Weather Watch | GJT | 2 hr |
| Jun 18, 3:01 PM MDT | Red Flag Warning | GJT | 30 hr |
| Jun 19, 3:12 PM MDT | Red Flag Warning | GJT | 30 hr |
| Jul 21, 9:29 AM MDT | Flash Flood Watch | GJT | 12 hr |
| Jul 22, 5:58 AM MDT | Flash Flood Watch | GJT | 15 hr |
| Jul 25, 5:26 PM MDT | Severe Thunderstorm Warning | GJT | 34 min |
| Jul 26, 4:47 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 27, 3:00 AM MDT | Flash Flood Watch | GJT | 18 hr |
| Jul 28, 4:11 AM MDT | Flash Flood Watch | GJT | 17 hr |
| Jul 28, 1:40 PM MDT | Flash Flood Watch | GJT | 31 hr |
| Jul 30, 3:41 AM MDT | Flash Flood Watch | GJT | 17 hr |
| Jul 30, 2:28 PM MDT | Areal Flood Advisory | GJT | 5 hr |
| Jul 30, 3:02 PM MDT | Flash Flood Watch | GJT | 30 hr |
| Jul 31, 3:03 PM MDT | Flash Flood Watch | GJT | 3 days |
| Aug 1, 8:40 PM MDT | Areal Flood Advisory | GJT | 2 hr |
| Aug 3, 1:39 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Aug 4, 3:16 AM MDT | Flash Flood Watch | GJT | 18 hr |
| Aug 4, 1:43 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Aug 4, 2:45 PM MDT | Flash Flood Warning | GJT | 3 hr |
| Aug 5, 4:38 AM MDT | Flash Flood Watch | GJT | 17 hr |
| Aug 16, 7:16 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Aug 19, 4:29 AM MDT | Flash Flood Watch | GJT | 17 hr |
| Aug 24, 6:00 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Sep 3, 2:13 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Sep 4, 2:38 PM MDT | Red Flag Warning | GJT | 30 hr |
| Sep 10, 3:31 PM MDT | Freeze Warning | GJT | 17 hr |
| Sep 17, 3:08 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Sep 17, 3:08 PM MDT | Red Flag Warning | GJT | 30 hr |
| Sep 18, 2:40 PM MDT | Red Flag Warning | GJT | 30 hr |
| Sep 19, 2:49 PM MDT | Red Flag Warning | GJT | 30 hr |
| Sep 21, 2:34 PM MDT | Flash Flood Watch | GJT | 37 hr |
| Oct 6, 9:38 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 6, 12:08 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 6, 2:58 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Oct 6, 3:12 PM MDT | Severe Thunderstorm Warning | GJT | 48 min |
| Oct 6, 3:40 PM MDT | Severe Thunderstorm Warning | GJT | 50 min |
| Oct 6, 3:59 PM MDT | Severe Thunderstorm Warning | GJT | 46 min |
| Oct 7, 1:53 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Oct 9, 4:31 AM MDT | Freeze Warning | GJT | 28 hr |
| Oct 9, 4:43 AM MDT | Freeze Watch | GJT | 7 hr |
| Oct 13, 4:31 AM MDT | Freeze Watch | GJT | 7 hr |
| Oct 13, 11:54 AM MDT | Freeze Warning | GJT | 21 hr |
| Oct 21, 2:43 AM MDT | Flash Flood Watch | GJT | 15 hr |
| Oct 21, 2:55 AM MDT | Winter Storm Warning | GJT | 57 hr |
| Oct 23, 6:09 AM MDT | Winter Storm Watch | GJT | 32 hr |
| Oct 23, 3:00 PM MDT | Freeze Watch | GJT | 24 hr |
| Oct 23, 3:16 PM MDT | Winter Storm Warning | GJT | 69 hr |
| Oct 24, 2:34 PM MDT | Freeze Warning | GJT | 42 hr |
| Nov 7, 3:21 PM MST | Winter Storm Watch | GJT | 7 hr |
| Nov 7, 3:21 PM MST | Winter Weather Advisory | GJT | 54 hr |
| Nov 10, 3:34 AM MST | Winter Weather Advisory | GJT | 44 hr |
| Nov 14, 3:54 AM MST | Winter Weather Advisory | GJT | 44 hr |
| Nov 19, 3:08 PM MST | Winter Storm Watch | GJT | 3 hr |
| Nov 19, 5:56 PM MST | Winter Storm Warning | GJT | 3 days |
| Nov 22, 4:29 AM MST | Blizzard Watch | GJT | 23 hr |
| Nov 22, 3:10 PM MST | High Wind Watch | GJT | 13 hr |
| Nov 22, 3:13 PM MST | Blizzard Warning | GJT | 54 hr |
| Nov 23, 3:41 AM MST | High Wind Warning | GJT | 25 hr |
| Nov 27, 3:59 AM MST | Winter Weather Advisory | GJT | 63 hr |
| Dec 14, 2:30 PM MST | Winter Weather Advisory | GJT | 52 hr |
| Dec 17, 4:06 AM MST | Winter Storm Watch | GJT | 24 hr |
| Dec 17, 4:06 AM MST | Winter Weather Advisory | GJT | 3 days |
| Dec 18, 4:04 AM MST | Winter Storm Warning | GJT | 6 days |
| Dec 21, 2:45 PM MST | Winter Storm Watch | GJT | 24 hr |
| Dec 27, 3:13 PM MST | Winter Storm Watch | GJT | 24 hr |
| Dec 28, 3:26 PM MST | Winter Storm Warning | 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 | |
| Severe Thunderstorm Warning | 4 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 2 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 15 |
| Areal Flood Advisory | 7 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 15 |
| Blizzard Watch | 2 |
| Winter Storm Watch | 12 |
| Winter Weather Advisory | 17 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 3 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 3 |
| Wind Advisory | 11 |
| Fire | |
| Red Flag Warning | 20 |
| Fire Weather Watch | 13 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.