Alert archive / Montana / Rosebud County
Weather alerts in Rosebud County, Montana, 2012
79 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Rosebud County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 79
- Warnings
- 31
- Watches
- 21
- Advisories
- 12
- Busiest month
- June15 alerts
- Busiest day
- February 22, 20124 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Rosebud County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 4 | 0% | 3 | 100% | 25 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 Billings, MT: severe thunderstorm warnings | 29 | 16 | 45% | 38 | 55% | 21 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 15, 4:19 AM MST | Winter Weather Advisory | BYZ | 35 hr |
| Jan 17, 4:04 AM MST | Winter Storm Watch | BYZ | 7 hr |
| Jan 17, 11:04 AM MST | Winter Storm Warning | BYZ | 65 hr |
| Jan 17, 11:04 AM MST | Winter Weather Advisory | BYZ | 65 hr |
| Jan 18, 4:19 AM MST | Wind Chill Advisory | BYZ | 26 hr |
| Jan 21, 12:33 PM MST | Winter Weather Advisory | BYZ | 22 hr |
| Jan 23, 4:01 AM MST | High Wind Watch | BYZ | 48 hr |
| Jan 24, 3:49 AM MST | High Wind Warning | BYZ | 41 hr |
| Feb 20, 10:19 AM MST | High Wind Watch | BYZ | 29 hr |
| Feb 20, 9:04 PM MST | High Wind Warning | BYZ | 47 hr |
| Feb 22, 2:36 PM MST | Areal Flood Advisory | BYZ | 24 hr |
| Feb 22, 2:50 PM MST | Special Weather Statement | BYZ | 25 min |
| Feb 22, 3:21 PM MST | Special Weather Statement | BYZ | 24 min |
| Feb 22, 3:48 PM MST | Special Weather Statement | BYZ | 27 min |
| Feb 25, 3:58 PM MST | Winter Weather Advisory | BYZ | 19 hr |
| Feb 28, 3:31 AM MST | Winter Weather Advisory | BYZ | 23 hr |
| Mar 12, 3:59 PM MDT | Red Flag Warning | BYZ | 32 hr |
| Mar 14, 3:08 PM MDT | Fire Weather Watch | BYZ | 25 hr |
| Mar 15, 3:58 AM MDT | Red Flag Warning | BYZ | 4 days |
| Mar 18, 3:25 PM MDT | Winter Weather Advisory | BYZ | 21 hr |
| Mar 25, 4:15 AM MDT | Fire Weather Watch | BYZ | 10 hr |
| Mar 25, 2:01 PM MDT | Red Flag Warning | BYZ | 30 hr |
| Mar 26, 11:43 AM MDT | High Wind Warning | BYZ | 12 hr |
| Mar 29, 4:49 AM MDT | Fire Weather Watch | BYZ | 22 hr |
| Mar 30, 3:18 AM MDT | Red Flag Warning | BYZ | 65 hr |
| Apr 23, 3:21 PM MDT | Fire Weather Watch | BYZ | 12 hr |
| Apr 28, 3:58 AM MDT | Winter Weather Advisory | BYZ | 24 hr |
| 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 8, 5:41 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 8, 10:38 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jun 8, 10:40 PM MDT | Severe Thunderstorm Warning | BYZ | 65 min |
| Jun 8, 11:17 PM MDT | Severe Thunderstorm Warning | BYZ | 58 min |
| Jun 8, 11:36 PM MDT | Severe Thunderstorm Warning | BYZ | 33 min |
| Jun 24, 2:42 PM MDT | Fire Weather Watch | BYZ | 13 hr |
| Jun 25, 3:35 AM MDT | Red Flag Warning | BYZ | 44 hr |
| Jun 25, 2:09 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 3:07 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 29, 4:05 AM MDT | Red Flag Warning | BYZ | 18 hr |
| Jun 29, 2:54 PM MDT | Red Flag Warning | BYZ | 60 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 2, 5:02 AM MDT | Fire Weather Watch | BYZ | 10 hr |
| Jul 2, 2:34 PM MDT | Red Flag Warning | BYZ | 33 hr |
| Jul 10, 2:37 PM MDT | Red Flag Warning | BYZ | 30 hr |
| Jul 11, 12:43 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jul 13, 10:48 AM MDT | Red Flag Warning | BYZ | 34 hr |
| Jul 23, 1:27 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 23, 9:54 PM MDT | Special Weather Statement | BYZ | 21 min |
| Jul 23, 10:24 PM MDT | Severe Thunderstorm Warning | BYZ | 66 min |
| Jul 31, 3:19 PM MDT | Fire Weather Watch | BYZ | 49 hr |
| Aug 1, 3:03 PM MDT | Red Flag Warning | BYZ | 41 hr |
| Aug 6, 9:03 PM MDT | Red Flag Warning | BYZ | 24 hr |
| Aug 10, 4:10 AM MDT | Red Flag Warning | BYZ | 17 hr |
| Aug 13, 3:47 AM MDT | Fire Weather Watch | BYZ | 11 hr |
| Aug 13, 11:53 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 3:10 PM MDT | Red Flag Warning | BYZ | 30 hr |
| Aug 13, 4:10 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 2:55 PM MDT | Fire Weather Watch | BYZ | 19 hr |
| Aug 23, 9:36 AM MDT | Red Flag Warning | BYZ | 38 hr |
| Aug 26, 4:24 AM MDT | Fire Weather Watch | BYZ | 48 hr |
| Aug 28, 4:05 AM MDT | Red Flag Warning | BYZ | 43 hr |
| Aug 30, 3:37 PM MDT | Fire Weather Watch | BYZ | 5 hr |
| Aug 30, 8:49 PM MDT | Red Flag Warning | BYZ | 3 days |
| Sep 3, 4:56 AM MDT | Red Flag Warning | BYZ | 40 hr |
| Sep 6, 3:49 PM MDT | Fire Weather Watch | BYZ | 22 hr |
| Sep 7, 2:06 PM MDT | Red Flag Warning | BYZ | 4 days |
| Sep 18, 3:20 AM MDT | Red Flag Warning | BYZ | 17 hr |
| Sep 30, 4:07 AM MDT | Fire Weather Watch | BYZ | 30 hr |
| Oct 1, 9:39 AM MDT | Red Flag Warning | BYZ | 34 hr |
| Oct 17, 12:51 AM MDT | High Wind Warning | BYZ | 20 hr |
| Nov 6, 3:36 PM MST | Winter Storm Watch | BYZ | 3 days |
| Nov 8, 4:45 AM MST | Winter Storm Warning | BYZ | 58 hr |
| Dec 7, 3:42 PM MST | Winter Weather Advisory | BYZ | 35 hr |
| Dec 8, 8:24 AM MST | Mesoscale Discussion | SPC | 4 hr |
| Dec 13, 5:35 PM MST | Dense Fog Advisory | BYZ | 10 hr |
| Dec 23, 3:32 PM MST | Winter Weather Advisory | BYZ | 38 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 | 4 |
| Mesoscale Discussion | 11 |
| Special Weather Statement | 4 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 9 |
| Cold | |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 4 |
| High Wind Watch | 2 |
| Fire | |
| Red Flag Warning | 21 |
| Fire Weather Watch | 13 |
| 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 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.