Alert archive / Montana / Rosebud County
Weather alerts in Rosebud County, Montana, 2017
84 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 84
- Warnings
- 25
- Watches
- 11
- Advisories
- 21
- Busiest month
- July16 alerts
- Busiest day
- March 8, 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.
Rosebud County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 6 | 1 | 83% | 6 | 33% | 3 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 Billings, MT: severe thunderstorm warnings | 31 | 15 | 52% | 58 | 45% | 23 min |
| NWS Billings, MT: flash flood warnings | 1 | 1 | 0% | 1 | 100% | 45 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 3, 2:31 PM MST | Wind Chill Advisory | BYZ | 45 hr |
| Jan 3, 2:31 PM MST | Winter Weather Advisory | BYZ | 24 hr |
| Jan 10, 3:48 AM MST | Winter Weather Advisory | BYZ | 35 hr |
| Jan 11, 2:31 PM MST | Wind Chill Advisory | BYZ | 20 hr |
| Jan 20, 5:00 AM MST | Freezing Rain Advisory | BYZ | 7 hr |
| Jan 21, 3:21 AM MST | Dense Fog Advisory | BYZ | 7 hr |
| Jan 22, 8:29 PM MST | Special Weather Statement | BYZ | 3 hr |
| Jan 23, 8:46 AM MST | Special Weather Statement | BYZ | 3 hr |
| Jan 30, 3:50 AM MST | Winter Weather Advisory | BYZ | 54 hr |
| Feb 7, 4:13 AM MST | Winter Weather Advisory | BYZ | 24 hr |
| Feb 9, 7:40 AM MST | Freezing Rain Advisory | BYZ | 8 hr |
| Feb 21, 2:50 AM MST | High Wind Warning | BYZ | 18 hr |
| Feb 22, 1:44 PM MST | Winter Weather Advisory | BYZ | 44 hr |
| Mar 1, 5:37 PM MST | Special Weather Statement | BYZ | 113 min |
| Mar 1, 8:43 PM MST | Winter Weather Advisory | BYZ | 9 hr |
| Mar 2, 6:05 AM MST | Winter Weather Advisory | BYZ | 4 hr |
| Mar 5, 3:43 AM MST | Winter Weather Advisory | BYZ | 34 hr |
| Mar 5, 12:06 PM MST | High Wind Warning | BYZ | 24 hr |
| Mar 7, 3:21 PM MST | Winter Storm Watch | BYZ | 24 hr |
| Mar 8, 4:41 AM MST | Winter Storm Warning | BYZ | 57 hr |
| Mar 8, 12:46 PM MST | Special Weather Statement | BYZ | 89 min |
| Mar 8, 2:20 PM MST | Special Weather Statement | BYZ | 55 min |
| Mar 8, 3:24 PM MST | Winter Weather Advisory | BYZ | 53 hr |
| Mar 12, 4:26 AM MDT | Special Weather Statement | BYZ | 64 min |
| Mar 12, 7:18 AM MDT | Special Weather Statement | BYZ | 87 min |
| Mar 22, 7:23 AM MDT | Special Weather Statement | BYZ | 112 min |
| Apr 8, 3:07 PM MDT | Winter Weather Advisory | BYZ | 42 hr |
| Apr 24, 4:15 AM MDT | Winter Storm Watch | BYZ | 9 hr |
| Apr 24, 4:15 AM MDT | Winter Weather Advisory | BYZ | 34 hr |
| May 7, 5:35 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 7, 10:40 PM MDT | Special Weather Statement | BYZ | 80 min |
| May 21, 6:00 PM MDT | Special Weather Statement | BYZ | 45 min |
| Jun 9, 7:01 PM MDT | Special Weather Statement | BYZ | 59 min |
| Jun 9, 7:37 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 8:02 PM MDT | Special Weather Statement | BYZ | 58 min |
| Jun 12, 2:45 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 20, 8:55 PM MDT | Severe Thunderstorm Warning | BYZ | 65 min |
| Jun 20, 9:50 PM MDT | Severe Thunderstorm Warning | BYZ | 55 min |
| Jul 6, 5:43 PM MDT | Severe Thunderstorm Warning | BYZ | 62 min |
| Jul 6, 6:41 PM MDT | Special Weather Statement | BYZ | 64 min |
| Jul 9, 3:45 PM MDT | Fire Weather Watch | BYZ | 12 hr |
| Jul 10, 3:30 AM MDT | Red Flag Warning | BYZ | 17 hr |
| Jul 10, 4:31 PM MDT | Special Weather Statement | BYZ | 44 min |
| Jul 10, 4:47 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Jul 10, 4:52 PM MDT | Severe Thunderstorm Warning | BYZ | 23 min |
| Jul 15, 3:09 AM MDT | Fire Weather Watch | BYZ | 12 hr |
| Jul 15, 2:48 PM MDT | Red Flag Warning | BYZ | 33 hr |
| Jul 15, 8:52 PM MDT | Special Weather Statement | BYZ | 38 min |
| Jul 16, 2:36 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jul 16, 4:44 PM MDT | Special Weather Statement | BYZ | 61 min |
| Jul 18, 2:22 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 3:17 AM MDT | Red Flag Warning | BYZ | 42 hr |
| Jul 20, 2:58 PM MDT | Red Flag Warning | BYZ | 30 hr |
| Jul 22, 3:07 AM MDT | Red Flag Warning | BYZ | 18 hr |
| Aug 1, 9:14 PM MDT | Severe Thunderstorm Warning | BYZ | 61 min |
| Aug 1, 10:00 PM MDT | Severe Thunderstorm Warning | BYZ | 43 min |
| Aug 1, 10:47 PM MDT | Special Weather Statement | BYZ | 58 min |
| Aug 16, 3:09 AM MDT | Fire Weather Watch | BYZ | 12 hr |
| Aug 16, 2:44 PM MDT | Red Flag Warning | BYZ | 30 hr |
| Aug 24, 7:01 PM MDT | Special Weather Statement | BYZ | 44 min |
| Aug 26, 8:21 AM MDT | Red Flag Warning | BYZ | 12 hr |
| Aug 30, 3:37 AM MDT | Red Flag Warning | BYZ | 17 hr |
| Aug 31, 2:58 PM MDT | Fire Weather Watch | BYZ | 12 hr |
| Sep 1, 2:29 AM MDT | Red Flag Warning | BYZ | 18 hr |
| Sep 1, 2:29 PM MDT | Fire Weather Watch | BYZ | 24 hr |
| Sep 2, 2:50 PM MDT | Red Flag Warning | BYZ | 54 hr |
| Sep 7, 2:15 PM MDT | Red Flag Warning | BYZ | 30 hr |
| Sep 26, 3:36 AM MDT | Special Weather Statement | BYZ | 3 hr |
| Sep 26, 7:34 AM MDT | Special Weather Statement | BYZ | 3 hr |
| Oct 3, 8:02 AM MDT | Special Weather Statement | BYZ | 118 min |
| Oct 19, 2:27 PM MDT | Red Flag Warning | BYZ | 30 hr |
| Oct 21, 3:11 AM MDT | High Wind Warning | BYZ | 47 hr |
| Oct 22, 2:40 AM MDT | High Wind Watch | BYZ | 15 hr |
| Oct 22, 4:13 PM MDT | Special Weather Statement | BYZ | 62 min |
| Oct 23, 3:04 PM MDT | Fire Weather Watch | BYZ | 24 hr |
| Oct 24, 3:01 PM MDT | Red Flag Warning | BYZ | 36 hr |
| Nov 3, 3:36 AM MDT | Winter Weather Advisory | BYZ | 36 hr |
| Nov 11, 5:13 AM MST | Winter Weather Advisory | BYZ | 7 hr |
| Nov 11, 9:09 PM MST | Dense Fog Advisory | BYZ | 14 hr |
| Nov 29, 3:02 AM MST | High Wind Warning | BYZ | 14 hr |
| Dec 2, 2:02 PM MST | Winter Weather Advisory | BYZ | 44 hr |
| Dec 27, 4:04 AM MST | Winter Storm Watch | BYZ | 24 hr |
| Dec 27, 4:04 AM MST | Winter Storm Warning | BYZ | 3 days |
| Dec 30, 3:38 PM MST | Wind Chill Advisory | BYZ | 18 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 | 6 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 22 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 14 |
| Cold | |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 4 |
| High Wind Watch | 1 |
| Fire | |
| Red Flag Warning | 13 |
| Fire Weather Watch | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
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.