Alert archive / Colorado / Moffat County
Weather alerts in Moffat County, Colorado, 2017
99 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Moffat County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 99
- Warnings
- 25
- Watches
- 19
- Advisories
- 48
- Busiest month
- January21 alerts
- Busiest day
- January 3, 20174 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Moffat County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 1 | 0% | 1 | 100% | 13 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Grand Junction, CO: severe thunderstorm warnings | 14 | 2 | 86% | 25 | 8% | 7 min |
| NWS Grand Junction, CO: flash flood warnings | 13 | 1 | 92% | 24 | 4% | 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 2, 3:57 AM MST | Winter Weather Advisory | GJT | 26 hr |
| Jan 2, 11:24 PM MST | Winter Storm Watch | GJT | 16 hr |
| Jan 2, 11:24 PM MST | Winter Storm Warning | GJT | 3 days |
| Jan 3, 5:51 AM MST | Winter Weather Advisory | GJT | 6 hr |
| Jan 3, 3:42 PM MST | Winter Weather Advisory | GJT | 58 hr |
| Jan 5, 3:21 PM MST | Wind Chill Warning | GJT | 13 hr |
| Jan 7, 4:11 AM MST | Winter Storm Watch | GJT | 12 hr |
| Jan 7, 4:09 PM MST | Winter Storm Warning | GJT | 65 hr |
| Jan 10, 7:11 AM MST | Dense Fog Advisory | GJT | 7 hr |
| Jan 10, 3:21 PM MST | Winter Storm Warning | GJT | 42 hr |
| Jan 10, 3:21 PM MST | Winter Weather Advisory | GJT | 42 hr |
| Jan 12, 11:24 AM MST | Winter Weather Advisory | GJT | 54 hr |
| Jan 13, 8:50 PM MST | Dense Fog Advisory | GJT | 20 hr |
| Jan 14, 7:31 PM MST | Dense Fog Advisory | GJT | 16 hr |
| Jan 17, 5:47 PM MST | Dense Fog Advisory | GJT | 17 hr |
| Jan 18, 3:41 PM MST | Winter Storm Warning | GJT | 4 days |
| Jan 18, 3:41 PM MST | Winter Weather Advisory | GJT | 4 days |
| Jan 18, 10:04 PM MST | Winter Storm Watch | GJT | 17 hr |
| Jan 21, 7:48 PM MST | Winter Storm Watch | GJT | 16 hr |
| Jan 22, 4:30 AM MST | Winter Storm Warning | GJT | 72 hr |
| Jan 22, 4:30 AM MST | Winter Weather Advisory | GJT | 3 days |
| Feb 3, 3:26 AM MST | Winter Weather Advisory | GJT | 30 hr |
| Feb 4, 3:45 PM MST | Winter Storm Watch | GJT | 23 hr |
| Feb 5, 3:03 PM MST | Winter Storm Warning | GJT | 69 hr |
| Feb 10, 3:03 AM MST | Winter Weather Advisory | GJT | 4 days |
| Feb 12, 5:25 AM MST | Dense Fog Advisory | GJT | 6 hr |
| Feb 13, 7:50 AM MST | Dense Fog Advisory | GJT | 5 hr |
| Feb 13, 6:31 PM MST | Dense Fog Advisory | GJT | 16 hr |
| Feb 17, 9:02 PM MST | Winter Weather Advisory | GJT | 53 hr |
| Feb 20, 7:22 AM MST | Dense Fog Advisory | GJT | 98 min |
| Feb 21, 4:25 AM MST | Winter Storm Watch | GJT | 10 hr |
| Feb 21, 2:48 PM MST | Winter Weather Advisory | GJT | 3 days |
| Feb 26, 3:26 PM MST | Winter Weather Advisory | GJT | 53 hr |
| Mar 4, 3:19 AM MST | Wind Advisory | GJT | 50 hr |
| Mar 5, 3:02 AM MST | Winter Weather Advisory | GJT | 36 hr |
| Mar 22, 3:54 PM MDT | Winter Weather Advisory | GJT | 44 hr |
| Mar 26, 10:54 PM MDT | Winter Weather Advisory | GJT | 52 hr |
| Mar 30, 3:29 AM MDT | Winter Weather Advisory | GJT | 49 hr |
| Mar 31, 12:26 PM MDT | Wind Advisory | GJT | 10 hr |
| Mar 31, 2:31 PM MDT | Special Weather Statement | GJT | 44 min |
| Apr 7, 1:37 PM MDT | Wind Advisory | GJT | 33 hr |
| Apr 9, 2:51 AM MDT | Wind Advisory | GJT | 12 hr |
| Apr 20, 3:12 AM MDT | Winter Weather Advisory | GJT | 31 hr |
| Apr 24, 3:31 AM MDT | Winter Weather Advisory | GJT | 41 hr |
| Apr 25, 3:30 PM MDT | Winter Storm Watch | GJT | 13 hr |
| Apr 26, 4:30 AM MDT | Winter Storm Warning | GJT | 44 hr |
| May 7, 2:17 PM MDT | Severe Thunderstorm Warning | GJT | 28 min |
| May 14, 3:01 PM MDT | Red Flag Warning | GJT | 28 hr |
| May 16, 3:38 AM MDT | Winter Weather Advisory | GJT | 3 days |
| May 16, 3:55 AM MDT | Freeze Watch | GJT | 35 hr |
| May 18, 9:22 AM MDT | Winter Storm Warning | GJT | 24 hr |
| May 25, 5:05 PM MDT | Special Weather Statement | GJT | 40 min |
| May 26, 6:07 PM MDT | Special Weather Statement | GJT | 38 min |
| Jun 7, 2:53 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Jun 8, 3:01 PM MDT | Red Flag Warning | GJT | 4 days |
| Jun 9, 3:20 AM MDT | Fire Weather Watch | GJT | 10 hr |
| Jun 11, 2:52 PM MDT | Wind Advisory | GJT | 28 hr |
| Jun 12, 3:07 PM MDT | High Wind Warning | GJT | 4 hr |
| Jun 25, 1:22 PM MDT | Fire Weather Watch | GJT | 26 hr |
| Jun 26, 2:52 PM MDT | Fire Weather Watch | GJT | 24 hr |
| Jun 26, 2:52 PM MDT | Red Flag Warning | GJT | 29 hr |
| Jun 27, 3:47 PM MDT | Red Flag Warning | GJT | 28 hr |
| Jun 28, 2:58 PM MDT | Red Flag Warning | GJT | 29 hr |
| Jul 18, 2:32 PM MDT | Flash Flood Watch | GJT | 33 hr |
| Jul 21, 2:52 AM MDT | Flash Flood Watch | GJT | 21 hr |
| Jul 21, 2:20 PM MDT | Special Weather Statement | GJT | 40 min |
| Jul 21, 2:34 PM MDT | Special Weather Statement | GJT | 41 min |
| Jul 21, 2:42 PM MDT | Areal Flood Advisory | GJT | 3 hr |
| Jul 24, 3:51 AM MDT | Flash Flood Watch | GJT | 44 hr |
| Aug 14, 5:47 PM MDT | Special Weather Statement | GJT | 43 min |
| Sep 14, 5:03 PM MDT | Special Weather Statement | GJT | 42 min |
| Sep 18, 9:33 PM MDT | Wind Advisory | GJT | 21 hr |
| Sep 20, 3:11 PM MDT | Wind Advisory | GJT | 30 hr |
| Sep 23, 12:14 PM MDT | Winter Weather Advisory | GJT | 9 hr |
| Sep 24, 8:47 AM MDT | Freeze Warning | GJT | 24 hr |
| Sep 25, 2:46 PM MDT | Freeze Warning | GJT | 18 hr |
| Sep 30, 3:39 PM MDT | Winter Storm Warning | GJT | 55 hr |
| Sep 30, 9:39 PM MDT | Winter Weather Advisory | GJT | 49 hr |
| Oct 2, 1:34 PM MDT | Freeze Warning | GJT | 19 hr |
| Oct 3, 12:25 AM MDT | Dense Fog Advisory | GJT | 8 hr |
| Oct 3, 1:38 PM MDT | Wind Advisory | GJT | 28 hr |
| Oct 7, 2:00 PM MDT | Winter Weather Advisory | GJT | 49 hr |
| Oct 13, 3:12 AM MDT | Red Flag Warning | GJT | 17 hr |
| Oct 20, 2:53 AM MDT | Wind Advisory | GJT | 16 hr |
| Nov 3, 3:19 PM MDT | Winter Storm Watch | GJT | 12 hr |
| Nov 4, 3:36 AM MDT | Winter Storm Warning | GJT | 67 hr |
| Nov 15, 2:44 PM MST | Winter Storm Watch | GJT | 13 hr |
| Nov 16, 3:48 AM MST | Winter Storm Warning | GJT | 48 hr |
| Nov 17, 4:11 AM MST | Wind Advisory | GJT | 17 hr |
| Dec 2, 8:32 PM MST | Winter Weather Advisory | GJT | 38 hr |
| Dec 2, 8:39 PM MST | Wind Advisory | GJT | 26 hr |
| Dec 19, 4:10 PM MST | Winter Weather Advisory | GJT | 56 hr |
| Dec 21, 2:22 PM MST | Winter Storm Watch | GJT | 13 hr |
| Dec 22, 3:34 AM MST | Winter Storm Warning | GJT | 44 hr |
| Dec 22, 3:34 AM MST | Winter Weather Advisory | GJT | 44 hr |
| Dec 23, 1:53 PM MST | Winter Storm Watch | GJT | 15 hr |
| Dec 24, 4:28 AM MST | Winter Storm Warning | GJT | 38 hr |
| Dec 24, 1:26 PM MST | Winter Weather Advisory | GJT | 20 hr |
| Dec 25, 6:05 PM MST | Winter Weather Advisory | GJT | 12 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 | 1 |
| Special Weather Statement | 7 |
| Flooding | |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 13 |
| Winter Storm Watch | 11 |
| Winter Weather Advisory | 27 |
| Cold | |
| Freeze Warning | 3 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 11 |
| Fire | |
| Red Flag Warning | 6 |
| Fire Weather Watch | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.