Alert archive / Montana / Garfield County
Weather alerts in Garfield County, Montana, 2012
189 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Garfield County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 189
- Warnings
- 56
- Watches
- 30
- Advisories
- 71
- Busiest month
- June39 alerts
- Busiest day
- June 9, 201211 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Garfield County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 23 | 20 | 13% | 15 | 73% | 24 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Glasgow, MT: severe thunderstorm warnings | 90 | 66 | 27% | 135 | 79% | 29 min |
| NWS Glasgow, MT: flash flood warnings | 1 | 0 | 100% | 2 | 0% |
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 4, 2:38 PM MST | High Wind Watch | GGW | 13 hr |
| Jan 15, 5:16 AM MST | Wind Chill Advisory | GGW | 28 hr |
| Jan 17, 3:11 PM MST | Wind Chill Advisory | GGW | 54 hr |
| Jan 18, 4:01 AM MST | Winter Weather Advisory | GGW | 48 hr |
| Jan 24, 3:31 AM MST | High Wind Watch | GGW | 24 hr |
| Jan 25, 3:32 AM MST | High Wind Warning | GGW | 17 hr |
| Feb 22, 2:24 PM MST | Special Weather Statement | GGW | 66 min |
| Feb 22, 2:50 PM MST | Special Weather Statement | GGW | 55 min |
| Feb 24, 3:27 PM MST | Winter Weather Advisory | GGW | 43 hr |
| Mar 1, 2:18 AM MST | Winter Weather Advisory | GGW | 9 hr |
| Mar 8, 2:27 PM MST | Fire Weather Watch | GGW | 13 hr |
| Mar 9, 3:38 AM MST | Red Flag Warning | GGW | 16 hr |
| Mar 12, 2:52 PM MDT | Fire Weather Watch | GGW | 13 hr |
| Mar 13, 3:35 AM MDT | High Wind Warning | GGW | 20 hr |
| Mar 13, 3:54 AM MDT | Red Flag Warning | GGW | 24 hr |
| Mar 15, 3:54 AM MDT | Fire Weather Watch | GGW | 24 hr |
| Mar 16, 3:53 AM MDT | Red Flag Warning | GGW | 41 hr |
| Mar 18, 2:20 PM MDT | Winter Weather Advisory | GGW | 13 hr |
| Mar 19, 3:49 AM MDT | Winter Storm Warning | GGW | 16 hr |
| Mar 25, 6:50 AM MDT | Lake Wind Advisory | GGW | 29 hr |
| Mar 26, 3:23 PM MDT | Lake Wind Advisory | GGW | 29 hr |
| Mar 28, 3:38 AM MDT | Lake Wind Advisory | GGW | 14 hr |
| Mar 29, 4:20 AM MDT | Fire Weather Watch | GGW | 24 hr |
| Mar 30, 3:53 AM MDT | Red Flag Warning | GGW | 17 hr |
| Mar 30, 3:58 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Mar 31, 3:51 AM MDT | Red Flag Warning | GGW | 16 hr |
| Mar 31, 2:16 PM MDT | Lake Wind Advisory | GGW | 49 hr |
| Mar 31, 2:41 PM MDT | Red Flag Warning | GGW | 30 hr |
| Apr 2, 3:37 AM MDT | Red Flag Warning | GGW | 14 hr |
| Apr 3, 3:39 AM MDT | Lake Wind Advisory | GGW | 41 hr |
| Apr 3, 3:55 AM MDT | Fire Weather Watch | GGW | 11 hr |
| Apr 3, 2:51 PM MDT | Red Flag Warning | GGW | 30 hr |
| Apr 5, 4:18 AM MDT | Blizzard Watch | GGW | 36 hr |
| Apr 6, 3:45 AM MDT | Blizzard Warning | GGW | 17 hr |
| Apr 6, 3:20 PM MDT | Winter Weather Advisory | GGW | 17 hr |
| Apr 7, 10:16 AM MDT | Lake Wind Advisory | GGW | 10 hr |
| Apr 8, 3:19 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Apr 10, 2:51 PM MDT | Lake Wind Advisory | GGW | 54 hr |
| Apr 14, 3:01 PM MDT | Lake Wind Advisory | GGW | 30 hr |
| Apr 17, 9:50 AM MDT | Lake Wind Advisory | GGW | 11 hr |
| Apr 18, 3:34 AM MDT | Lake Wind Advisory | GGW | 13 hr |
| Apr 20, 3:03 AM MDT | Lake Wind Advisory | GGW | 18 hr |
| Apr 23, 2:56 PM MDT | Fire Weather Watch | GGW | 13 hr |
| Apr 24, 4:17 PM MDT | Lake Wind Advisory | GGW | 4 hr |
| Apr 25, 4:04 AM MDT | Lake Wind Advisory | GGW | 53 hr |
| Apr 27, 8:50 PM MDT | Lake Wind Advisory | GGW | 23 hr |
| Apr 30, 2:33 PM MDT | Lake Wind Advisory | GGW | 30 hr |
| May 5, 4:01 AM MDT | Lake Wind Advisory | GGW | 16 hr |
| May 5, 2:59 PM MDT | High Wind Watch | GGW | 13 hr |
| May 6, 3:56 AM MDT | High Wind Warning | GGW | 17 hr |
| May 7, 3:37 AM MDT | Lake Wind Advisory | GGW | 16 hr |
| May 9, 2:34 PM MDT | Lake Wind Advisory | GGW | 29 hr |
| May 21, 2:38 PM MDT | Lake Wind Advisory | GGW | 30 hr |
| May 23, 3:17 AM MDT | Lake Wind Advisory | GGW | 18 hr |
| May 25, 3:21 PM MDT | Lake Wind Advisory | GGW | 3 days |
| Jun 2, 9:22 AM MDT | Mesoscale Discussion | SPC | 53 min |
| Jun 2, 12:52 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jun 2, 2:10 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 2, 6:08 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 2, 7:23 PM MDT | Special Weather Statement | GGW | 37 min |
| Jun 2, 7:30 PM MDT | Severe Thunderstorm Warning | GGW | 30 min |
| Jun 2, 7:57 PM MDT | Special Weather Statement | GGW | 33 min |
| Jun 2, 8:23 PM MDT | Special Weather Statement | GGW | 37 min |
| Jun 4, 2:41 PM MDT | Lake Wind Advisory | GGW | 48 hr |
| Jun 4, 9:56 PM MDT | Special Weather Statement | GGW | 49 min |
| Jun 8, 2:37 PM MDT | Lake Wind Advisory | GGW | 24 hr |
| Jun 8, 2:52 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jun 8, 5:07 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Jun 8, 5:41 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 8, 8:40 PM MDT | Severe Thunderstorm Warning | GGW | 35 min |
| Jun 8, 9:13 PM MDT | Severe Thunderstorm Warning | GGW | 47 min |
| Jun 8, 9:29 PM MDT | Special Weather Statement | GGW | 46 min |
| Jun 8, 10:30 PM MDT | Special Weather Statement | GGW | 30 min |
| Jun 8, 10:34 PM MDT | Severe Thunderstorm Warning | GGW | 26 min |
| Jun 8, 10:38 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jun 8, 10:47 PM MDT | Severe Thunderstorm Warning | GGW | 43 min |
| Jun 8, 10:55 PM MDT | Severe Thunderstorm Warning | GGW | 50 min |
| Jun 8, 11:13 PM MDT | Severe Thunderstorm Warning | GGW | 47 min |
| Jun 8, 11:57 PM MDT | Severe Thunderstorm Warning | GGW | 48 min |
| Jun 9, 12:30 AM MDT | Severe Thunderstorm Warning | GGW | 60 min |
| Jun 10, 3:32 AM MDT | Lake Wind Advisory | GGW | 35 hr |
| Jun 13, 2:19 PM MDT | Lake Wind Advisory | GGW | 27 hr |
| Jun 16, 2:53 PM MDT | Lake Wind Advisory | GGW | 29 hr |
| Jun 19, 3:21 AM MDT | Lake Wind Advisory | GGW | 19 hr |
| Jun 20, 3:36 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Jun 21, 2:36 PM MDT | Lake Wind Advisory | GGW | 4 days |
| Jun 25, 2:40 PM MDT | Fire Weather Watch | GGW | 13 hr |
| Jun 25, 3:35 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jun 25, 4:01 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 25, 5:34 PM MDT | Severe Thunderstorm Warning | GGW | 47 min |
| Jun 25, 7:12 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 25, 10:27 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 26, 3:55 AM MDT | Red Flag Warning | GGW | 18 hr |
| Jun 26, 4:05 AM MDT | Lake Wind Advisory | GGW | 41 hr |
| Jul 1, 9:36 AM MDT | Lake Wind Advisory | GGW | 11 hr |
| Jul 1, 2:40 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 4:04 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 1, 10:46 PM MDT | Severe Thunderstorm Warning | GGW | 59 min |
| Jul 1, 11:40 PM MDT | Severe Thunderstorm Warning | GGW | 65 min |
| Jul 2, 2:35 PM MDT | Lake Wind Advisory | GGW | 37 hr |
| Jul 2, 3:05 PM MDT | Fire Weather Watch | GGW | 12 hr |
| Jul 3, 3:13 AM MDT | Red Flag Warning | GGW | 24 hr |
| Jul 3, 12:58 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jul 3, 1:41 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 3, 3:18 PM MDT | Severe Thunderstorm Warning | GGW | 42 min |
| Jul 3, 3:58 PM MDT | Severe Thunderstorm Warning | GGW | 32 min |
| Jul 10, 2:10 PM MDT | Red Flag Warning | GGW | 31 hr |
| Jul 13, 2:59 PM MDT | Lake Wind Advisory | GGW | 36 hr |
| Jul 13, 3:03 PM MDT | Red Flag Warning | GGW | 28 hr |
| Jul 21, 4:25 PM MDT | Mesoscale Discussion | SPC | 65 min |
| Jul 21, 6:38 PM MDT | Severe Thunderstorm Warning | GGW | 52 min |
| Jul 23, 1:27 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 23, 7:20 PM MDT | Special Weather Statement | GGW | 55 min |
| Jul 23, 8:10 PM MDT | Special Weather Statement | GGW | 65 min |
| Jul 23, 9:25 PM MDT | Areal Flood Advisory | GGW | 3 hr |
| Jul 25, 3:56 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Jul 28, 8:07 PM MDT | Severe Thunderstorm Warning | GGW | 53 min |
| Jul 28, 8:11 PM MDT | Severe Thunderstorm Warning | GGW | 64 min |
| Jul 28, 8:41 PM MDT | Special Weather Statement | GGW | 64 min |
| Jul 31, 12:13 AM MDT | Severe Thunderstorm Warning | GGW | 31 min |
| Jul 31, 9:46 PM MDT | Fire Weather Watch | GGW | 30 hr |
| Aug 1, 2:31 PM MDT | Red Flag Warning | GGW | 32 hr |
| Aug 2, 11:47 AM MDT | Special Weather Statement | GGW | 58 min |
| Aug 2, 12:47 PM MDT | Special Weather Statement | GGW | 58 min |
| Aug 2, 2:03 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 2, 3:17 PM MDT | Lake Wind Advisory | GGW | 30 hr |
| Aug 6, 8:48 PM MDT | Red Flag Warning | GGW | 24 hr |
| Aug 13, 3:29 AM MDT | Fire Weather Watch | GGW | 24 hr |
| Aug 13, 4:58 AM MDT | Special Weather Statement | GGW | 62 min |
| Aug 13, 5:49 AM MDT | Special Weather Statement | GGW | 56 min |
| Aug 13, 6:07 AM MDT | Severe Thunderstorm Warning | GGW | 24 min |
| Aug 13, 6:49 AM MDT | Special Weather Statement | GGW | 56 min |
| Aug 13, 11:53 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 12:25 PM MDT | Special Weather Statement | GGW | 50 min |
| Aug 13, 12:31 PM MDT | Severe Thunderstorm Warning | GGW | 44 min |
| Aug 13, 1:09 PM MDT | Severe Thunderstorm Warning | GGW | 66 min |
| Aug 13, 2:05 PM MDT | Severe Thunderstorm Warning | GGW | 25 min |
| Aug 13, 4:47 PM MDT | Severe Thunderstorm Warning | GGW | 58 min |
| Aug 14, 3:12 AM MDT | Lake Wind Advisory | GGW | 41 hr |
| Aug 14, 3:42 AM MDT | Red Flag Warning | GGW | 17 hr |
| Aug 22, 2:27 PM MDT | Fire Weather Watch | GGW | 24 hr |
| Aug 23, 2:31 PM MDT | Lake Wind Advisory | GGW | 33 hr |
| Aug 23, 2:33 PM MDT | Red Flag Warning | GGW | 33 hr |
| Aug 27, 2:57 AM MDT | Fire Weather Watch | GGW | 24 hr |
| Aug 27, 2:57 AM MDT | Red Flag Warning | GGW | 18 hr |
| Aug 28, 3:25 AM MDT | Red Flag Warning | GGW | 43 hr |
| Aug 29, 3:28 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Aug 30, 3:00 PM MDT | Fire Weather Watch | GGW | 12 hr |
| Aug 31, 2:57 AM MDT | Red Flag Warning | GGW | 66 hr |
| Sep 1, 2:37 PM MDT | Lake Wind Advisory | GGW | 30 hr |
| Sep 3, 2:41 AM MDT | Fire Weather Watch | GGW | 12 hr |
| Sep 3, 2:33 PM MDT | Red Flag Warning | GGW | 29 hr |
| Sep 3, 2:35 PM MDT | Lake Wind Advisory | GGW | 29 hr |
| Sep 7, 2:28 PM MDT | Fire Weather Watch | GGW | 48 hr |
| Sep 8, 2:12 PM MDT | Red Flag Warning | GGW | 3 days |
| Sep 10, 3:13 AM MDT | Lake Wind Advisory | GGW | 42 hr |
| Sep 12, 3:32 AM MDT | Red Flag Warning | GGW | 16 hr |
| Sep 12, 2:29 PM MDT | Fire Weather Watch | GGW | 24 hr |
| Sep 13, 2:16 PM MDT | Red Flag Warning | GGW | 30 hr |
| Sep 19, 2:24 PM MDT | Lake Wind Advisory | GGW | 28 hr |
| Sep 19, 2:36 PM MDT | Fire Weather Watch | GGW | 13 hr |
| Oct 1, 2:40 PM MDT | Red Flag Warning | GGW | 24 hr |
| Oct 1, 2:44 PM MDT | Lake Wind Advisory | GGW | 54 hr |
| Oct 7, 2:29 PM MDT | Lake Wind Advisory | GGW | 30 hr |
| Oct 9, 2:33 PM MDT | Lake Wind Advisory | GGW | 30 hr |
| Oct 14, 2:50 PM MDT | High Wind Watch | GGW | 24 hr |
| Oct 14, 10:43 PM MDT | Lake Wind Advisory | GGW | 20 hr |
| Oct 15, 3:00 PM MDT | Fire Weather Watch | GGW | 23 hr |
| Oct 15, 3:07 PM MDT | High Wind Warning | GGW | 53 hr |
| Oct 16, 2:28 PM MDT | Red Flag Warning | GGW | 12 hr |
| Oct 18, 3:24 AM MDT | Lake Wind Advisory | GGW | 11 hr |
| Oct 19, 3:54 AM MDT | Lake Wind Advisory | GGW | 12 hr |
| Oct 20, 3:21 AM MDT | Lake Wind Advisory | GGW | 16 hr |
| Oct 22, 3:26 AM MDT | Lake Wind Advisory | GGW | 41 hr |
| Oct 24, 9:29 AM MDT | Lake Wind Advisory | GGW | 8 hr |
| Oct 25, 2:38 AM MDT | Lake Wind Advisory | GGW | 15 hr |
| Oct 30, 12:44 AM MDT | Dense Fog Advisory | GGW | 8 hr |
| Nov 3, 2:20 PM MDT | Lake Wind Advisory | GGW | 27 hr |
| Nov 5, 3:09 AM MST | Lake Wind Advisory | GGW | 10 hr |
| Nov 5, 1:12 PM MST | High Wind Warning | GGW | 5 hr |
| Nov 5, 3:09 PM MST | Winter Storm Watch | GGW | 48 hr |
| Nov 6, 3:07 AM MST | Lake Wind Advisory | GGW | 41 hr |
| Nov 7, 3:03 PM MST | Winter Storm Warning | GGW | 3 days |
| Nov 21, 2:40 PM MST | Lake Wind Advisory | GGW | 28 hr |
| Nov 29, 7:57 PM MST | Dense Fog Advisory | GGW | 2 hr |
| Dec 7, 2:46 PM MST | Winter Weather Advisory | GGW | 29 hr |
| Dec 8, 8:24 AM MST | Mesoscale Discussion | SPC | 4 hr |
| Dec 13, 6:14 PM MST | Dense Fog Advisory | GGW | 27 hr |
| Dec 23, 2:23 PM MST | Winter Weather Advisory | GGW | 30 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 | 23 |
| Severe Thunderstorm Watch | 6 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 17 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 2 |
| Blizzard Watch | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 7 |
| Cold | |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 4 |
| Lake Wind Advisory | 58 |
| Fire | |
| Red Flag Warning | 25 |
| Fire Weather Watch | 18 |
| 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 archive20112013
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.