Alert archive / Montana / McCone County
Weather alerts in McCone County, Montana, 2020
184 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
McCone County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 184
- Warnings
- 60
- Watches
- 19
- Advisories
- 69
- Busiest month
- July43 alerts
- Busiest day
- July 5, 202011 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
McCone County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 30 | 21 | 30% | 28 | 86% | 27 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 Glasgow, MT: tornado warnings | 3 | 2 | 33% | 2 | 100% | 0 min |
| NWS Glasgow, MT: severe thunderstorm warnings | 79 | 46 | 42% | 174 | 74% | 25 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, 2:07 PM MST | High Wind Watch | GGW | 25 hr |
| Jan 3, 2:55 PM MST | High Wind Warning | GGW | 36 hr |
| Jan 13, 2:19 PM MST | Wind Chill Advisory | GGW | 6 days |
| Jan 31, 3:14 AM MST | Red Flag Warning | GGW | 43 hr |
| Feb 7, 2:07 PM MST | Winter Weather Advisory | GGW | 31 hr |
| Feb 11, 3:06 AM MST | Winter Weather Advisory | GGW | 30 hr |
| Feb 12, 3:17 AM MST | Wind Chill Advisory | GGW | 31 hr |
| Feb 23, 2:53 AM MST | Winter Weather Advisory | GGW | 48 hr |
| Mar 1, 7:57 PM MST | Areal Flood Advisory | GGW | 66 hr |
| Mar 2, 2:06 PM MST | Red Flag Warning | GGW | 52 hr |
| Mar 2, 2:06 PM MST | High Wind Watch | GGW | 13 hr |
| Mar 2, 2:06 PM MST | High Wind Warning | GGW | 52 hr |
| Mar 11, 2:43 PM MDT | Winter Storm Watch | GGW | 37 hr |
| Mar 13, 3:27 AM MDT | Winter Weather Advisory | GGW | 3 days |
| Mar 31, 3:21 AM MDT | Winter Weather Advisory | GGW | 39 hr |
| Apr 17, 3:19 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Apr 18, 1:52 PM MDT | Lake Wind Advisory | GGW | 30 hr |
| Apr 20, 3:20 AM MDT | Lake Wind Advisory | GGW | 16 hr |
| Apr 21, 10:28 AM MDT | Red Flag Warning | GGW | 11 hr |
| Apr 24, 11:59 AM MDT | Special Weather Statement | GGW | 46 min |
| Apr 25, 3:05 PM MDT | Fire Weather Watch | GGW | 11 hr |
| Apr 26, 2:28 AM MDT | Lake Wind Advisory | GGW | 18 hr |
| Apr 26, 2:33 AM MDT | Red Flag Warning | GGW | 17 hr |
| Apr 27, 3:04 AM MDT | Fire Weather Watch | GGW | 24 hr |
| Apr 27, 2:41 PM MDT | Lake Wind Advisory | GGW | 30 hr |
| Apr 28, 3:13 AM MDT | Red Flag Warning | GGW | 18 hr |
| May 1, 2:56 AM MDT | Lake Wind Advisory | GGW | 18 hr |
| May 3, 3:12 AM MDT | Lake Wind Advisory | GGW | 18 hr |
| May 3, 1:47 PM MDT | Special Weather Statement | GGW | 58 min |
| May 3, 2:10 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 3, 3:39 PM MDT | Special Weather Statement | GGW | 66 min |
| May 3, 4:49 PM MDT | Areal Flood Advisory | GGW | 3 hr |
| May 3, 4:55 PM MDT | Special Weather Statement | GGW | 80 min |
| May 6, 3:01 AM MDT | Lake Wind Advisory | GGW | 20 hr |
| May 8, 4:43 PM MDT | Lake Wind Advisory | GGW | 13 hr |
| May 9, 3:02 PM MDT | Special Weather Statement | GGW | 43 min |
| May 11, 2:38 PM MDT | Lake Wind Advisory | GGW | 29 hr |
| May 16, 2:36 PM MDT | Lake Wind Advisory | GGW | 29 hr |
| May 20, 1:43 PM MDT | Mesoscale Discussion | SPC | 92 min |
| May 20, 3:11 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 20, 6:27 PM MDT | Mesoscale Discussion | SPC | 93 min |
| May 20, 7:28 PM MDT | Severe Thunderstorm Warning | GGW | 62 min |
| May 20, 8:18 PM MDT | Severe Thunderstorm Warning | GGW | 57 min |
| May 20, 8:36 PM MDT | Severe Thunderstorm Warning | GGW | 39 min |
| May 20, 8:44 PM MDT | Severe Thunderstorm Warning | GGW | 76 min |
| May 29, 2:23 PM MDT | Lake Wind Advisory | GGW | 54 hr |
| May 31, 6:13 PM MDT | Special Weather Statement | GGW | 62 min |
| May 31, 6:31 PM MDT | Severe Thunderstorm Warning | GGW | 59 min |
| May 31, 7:24 PM MDT | Severe Thunderstorm Warning | GGW | 41 min |
| May 31, 8:02 PM MDT | Special Weather Statement | GGW | 58 min |
| Jun 2, 2:02 PM MDT | Lake Wind Advisory | GGW | 29 hr |
| Jun 5, 10:57 AM MDT | Lake Wind Advisory | GGW | 52 hr |
| Jun 6, 4:26 PM MDT | Severe Thunderstorm Warning | GGW | 30 min |
| Jun 6, 4:49 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 6, 4:59 PM MDT | Special Weather Statement | GGW | 61 min |
| Jun 7, 2:59 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 8, 3:26 PM MDT | Special Weather Statement | GGW | 49 min |
| Jun 8, 4:17 PM MDT | Special Weather Statement | GGW | 43 min |
| Jun 8, 4:33 PM MDT | Special Weather Statement | GGW | 42 min |
| Jun 12, 12:41 PM MDT | Lake Wind Advisory | GGW | 32 hr |
| Jun 13, 5:19 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Jun 29, 3:56 PM MDT | Tornado Watch | SPC | 8 hr |
| Jun 29, 6:43 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 2:47 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jul 3, 2:51 PM MDT | Lake Wind Advisory | GGW | 7 hr |
| Jul 3, 5:30 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 3, 6:11 PM MDT | Severe Thunderstorm Warning | GGW | 64 min |
| Jul 3, 6:48 PM MDT | Severe Thunderstorm Warning | GGW | 42 min |
| Jul 3, 7:04 PM MDT | Severe Thunderstorm Warning | GGW | 56 min |
| Jul 3, 7:22 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 3, 7:24 PM MDT | Severe Thunderstorm Warning | GGW | 51 min |
| Jul 3, 7:45 PM MDT | Areal Flood Advisory | GGW | 3 hr |
| Jul 4, 5:39 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 4, 6:50 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Jul 4, 7:49 PM MDT | Special Weather Statement | GGW | 56 min |
| Jul 4, 8:08 PM MDT | Severe Thunderstorm Warning | GGW | 52 min |
| Jul 4, 8:31 PM MDT | Severe Thunderstorm Warning | GGW | 37 min |
| Jul 4, 8:46 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Jul 4, 8:48 PM MDT | Special Weather Statement | GGW | 57 min |
| Jul 4, 8:52 PM MDT | Severe Thunderstorm Warning | GGW | 53 min |
| Jul 4, 9:07 PM MDT | Special Weather Statement | GGW | 53 min |
| Jul 4, 9:33 PM MDT | Severe Thunderstorm Warning | GGW | 57 min |
| Jul 4, 9:52 PM MDT | Areal Flood Advisory | GGW | 2 hr |
| Jul 4, 9:56 PM MDT | Areal Flood Advisory | GGW | 3 hr |
| Jul 6, 1:34 PM MDT | Severe Thunderstorm Warning | GGW | 28 min |
| Jul 6, 2:22 PM MDT | Special Weather Statement | GGW | 53 min |
| Jul 6, 3:32 PM MDT | Severe Thunderstorm Warning | GGW | 58 min |
| Jul 6, 4:08 PM MDT | Special Weather Statement | GGW | 52 min |
| Jul 6, 4:18 PM MDT | Severe Thunderstorm Warning | GGW | 57 min |
| Jul 6, 5:11 PM MDT | Areal Flood Advisory | GGW | 105 min |
| Jul 6, 5:16 PM MDT | Special Weather Statement | GGW | 44 min |
| Jul 7, 9:52 AM MDT | Lake Wind Advisory | GGW | 11 hr |
| Jul 7, 12:47 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 1:14 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 7, 5:13 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jul 7, 5:25 PM MDT | Severe Thunderstorm Warning | GGW | 65 min |
| Jul 7, 6:27 PM MDT | Severe Thunderstorm Warning | GGW | 63 min |
| Jul 7, 7:24 PM MDT | Severe Thunderstorm Warning | GGW | 66 min |
| Jul 8, 2:21 AM MDT | Lake Wind Advisory | GGW | 22 hr |
| Jul 10, 1:39 PM MDT | Special Weather Statement | GGW | 66 min |
| Jul 10, 2:41 PM MDT | Lake Wind Advisory | GGW | 3 hr |
| Jul 12, 8:07 AM MDT | Lake Wind Advisory | GGW | 12 hr |
| Jul 13, 2:53 AM MDT | Lake Wind Advisory | GGW | 16 hr |
| Jul 14, 5:01 AM MDT | Lake Wind Advisory | GGW | 15 hr |
| Jul 19, 11:15 PM MDT | Special Weather Statement | GGW | 45 min |
| Jul 25, 2:45 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Aug 3, 3:05 AM MDT | Lake Wind Advisory | GGW | 14 hr |
| Aug 5, 2:40 PM MDT | Fire Weather Watch | GGW | 24 hr |
| Aug 6, 3:08 PM MDT | Red Flag Warning | GGW | 30 hr |
| Aug 6, 3:24 PM MDT | Lake Wind Advisory | GGW | 29 hr |
| Aug 6, 7:58 PM MDT | Special Weather Statement | GGW | 47 min |
| Aug 6, 8:07 PM MDT | Severe Thunderstorm Warning | GGW | 38 min |
| Aug 8, 2:32 PM MDT | Lake Wind Advisory | GGW | 30 hr |
| Aug 11, 12:41 PM MDT | Red Flag Warning | GGW | 32 hr |
| Aug 16, 2:08 PM MDT | Heat Advisory | GGW | 53 hr |
| Aug 17, 10:14 AM MDT | Red Flag Warning | GGW | 11 hr |
| Aug 17, 2:44 PM MDT | Red Flag Warning | GGW | 29 hr |
| Aug 19, 3:18 AM MDT | Heat Advisory | GGW | 17 hr |
| Aug 20, 9:47 AM MDT | Red Flag Warning | GGW | 17 hr |
| Aug 20, 8:49 PM MDT | Severe Thunderstorm Warning | GGW | 56 min |
| Aug 20, 9:12 PM MDT | Severe Thunderstorm Warning | GGW | 63 min |
| Aug 20, 9:43 PM MDT | Severe Thunderstorm Warning | GGW | 62 min |
| Aug 20, 10:43 PM MDT | Severe Thunderstorm Warning | GGW | 62 min |
| Aug 25, 2:53 PM MDT | Fire Weather Watch | GGW | 24 hr |
| Aug 25, 10:00 PM MDT | Severe Thunderstorm Warning | GGW | 60 min |
| Aug 26, 2:40 PM MDT | Red Flag Warning | GGW | 31 hr |
| Aug 27, 10:10 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Aug 27, 4:19 PM MDT | Special Weather Statement | GGW | 56 min |
| Aug 29, 3:48 PM MDT | Lake Wind Advisory | GGW | 31 hr |
| Aug 31, 3:18 AM MDT | Red Flag Warning | GGW | 66 hr |
| Aug 31, 2:23 PM MDT | Lake Wind Advisory | GGW | 43 hr |
| Sep 2, 9:44 AM MDT | High Wind Warning | GGW | 10 hr |
| Sep 4, 11:21 AM MDT | Red Flag Warning | GGW | 34 hr |
| Sep 5, 9:07 PM MDT | Lake Wind Advisory | GGW | 23 hr |
| Sep 6, 8:05 PM MDT | Lake Wind Advisory | GGW | 25 hr |
| Sep 12, 2:34 AM MDT | Fire Weather Watch | GGW | 24 hr |
| Sep 13, 2:34 AM MDT | Fire Weather Watch | GGW | 17 hr |
| Sep 13, 2:34 AM MDT | Red Flag Warning | GGW | 40 hr |
| Sep 19, 8:13 PM MDT | Lake Wind Advisory | GGW | 25 hr |
| Sep 22, 2:07 PM MDT | Fire Weather Watch | GGW | 24 hr |
| Sep 23, 2:17 PM MDT | Red Flag Warning | GGW | 31 hr |
| Sep 23, 2:25 PM MDT | Lake Wind Advisory | GGW | 31 hr |
| Sep 25, 2:39 PM MDT | Lake Wind Advisory | GGW | 13 hr |
| Sep 25, 2:40 PM MDT | Red Flag Warning | GGW | 13 hr |
| Sep 25, 2:42 PM MDT | Red Flag Warning | GGW | 29 hr |
| Sep 25, 2:43 PM MDT | Lake Wind Advisory | GGW | 54 hr |
| Sep 30, 2:44 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Oct 2, 3:07 AM MDT | Lake Wind Advisory | GGW | 16 hr |
| Oct 3, 5:21 PM MDT | Red Flag Warning | GGW | 27 hr |
| Oct 4, 2:11 PM MDT | Lake Wind Advisory | GGW | 28 hr |
| Oct 6, 3:30 AM MDT | Red Flag Warning | GGW | 17 hr |
| Oct 7, 1:21 PM MDT | Red Flag Warning | GGW | 31 hr |
| Oct 9, 2:42 AM MDT | Red Flag Warning | GGW | 41 hr |
| Oct 9, 7:38 PM MDT | Lake Wind Advisory | GGW | 48 hr |
| Oct 11, 8:31 AM MDT | Red Flag Warning | GGW | 9 hr |
| Oct 12, 3:09 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Oct 13, 8:45 AM MDT | Lake Wind Advisory | GGW | 33 hr |
| Oct 15, 2:55 AM MDT | Lake Wind Advisory | GGW | 17 hr |
| Oct 16, 1:41 PM MDT | Lake Wind Advisory | GGW | 28 hr |
| Oct 20, 1:29 PM MDT | Winter Weather Advisory | GGW | 45 hr |
| Oct 21, 10:27 AM MDT | Winter Storm Warning | GGW | 22 hr |
| Oct 21, 7:06 PM MDT | Special Weather Statement | GGW | 84 min |
| Oct 23, 2:36 PM MDT | Winter Weather Advisory | GGW | 30 hr |
| Oct 29, 2:12 PM MDT | Lake Wind Advisory | GGW | 52 hr |
| Oct 30, 7:08 PM MDT | Severe Thunderstorm Warning | GGW | 52 min |
| Oct 30, 7:14 PM MDT | Special Weather Statement | GGW | 91 min |
| Oct 30, 7:43 PM MDT | Severe Thunderstorm Warning | GGW | 38 min |
| Oct 30, 7:56 PM MDT | Severe Thunderstorm Warning | GGW | 56 min |
| Oct 30, 8:28 PM MDT | Special Weather Statement | GGW | 92 min |
| Nov 3, 11:31 AM MST | Red Flag Warning | GGW | 5 hr |
| Nov 4, 2:50 AM MST | Lake Wind Advisory | GGW | 15 hr |
| Nov 5, 2:26 PM MST | Winter Storm Watch | GGW | 47 hr |
| Nov 6, 2:45 PM MST | Winter Storm Warning | GGW | 69 hr |
| Nov 7, 1:55 PM MST | Winter Weather Advisory | GGW | 29 hr |
| Nov 10, 1:45 PM MST | Lake Wind Advisory | GGW | 27 hr |
| Nov 13, 1:40 PM MST | Lake Wind Advisory | GGW | 29 hr |
| Nov 18, 2:28 PM MST | Winter Weather Advisory | GGW | 21 hr |
| Nov 26, 3:00 AM MST | Lake Wind Advisory | GGW | 14 hr |
| Nov 27, 1:59 PM MST | Lake Wind Advisory | GGW | 30 hr |
| Dec 10, 11:40 AM MST | Dense Fog Advisory | GGW | 44 hr |
| Dec 18, 12:17 PM MST | High Wind Watch | GGW | 39 hr |
| Dec 20, 2:49 AM MST | High Wind Warning | GGW | 15 hr |
| Dec 21, 12:02 PM MST | High Wind Watch | GGW | 15 hr |
| Dec 22, 3:05 AM MST | High Wind Warning | GGW | 20 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 | 30 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 12 |
| Special Weather Statement | 24 |
| Flooding | |
| Areal Flood Advisory | 6 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 9 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 4 |
| Lake Wind Advisory | 49 |
| Fire | |
| Red Flag Warning | 23 |
| Fire Weather Watch | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
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.