Alert archive / Montana / Silver Bow County
Weather alerts in Silver Bow County, Montana, 2016
95 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Silver Bow County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 95
- Warnings
- 15
- Watches
- 9
- Advisories
- 57
- Busiest month
- December16 alerts
- Busiest day
- June 7, 20166 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Silver Bow County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 2 | 0% | 2 | 100% | 7 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Missoula, MT: severe thunderstorm warnings | 19 | 14 | 26% | 41 | 46% | 12 min |
| NWS Missoula, MT: flash flood warnings | 1 | 0 | 100% | 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 5, 2:08 PM MST | Winter Weather Advisory | MSO | 69 hr |
| Jan 15, 12:19 PM MST | Winter Weather Advisory | MSO | 47 hr |
| Jan 19, 4:22 AM MST | Winter Weather Advisory | MSO | 34 hr |
| Jan 23, 1:23 PM MST | Winter Weather Advisory | MSO | 21 hr |
| Jan 27, 4:58 AM MST | Freezing Rain Advisory | MSO | 4 hr |
| Jan 29, 4:54 AM MST | Winter Weather Advisory | MSO | 28 hr |
| Jan 30, 10:34 AM MST | Winter Weather Advisory | MSO | 33 hr |
| Jan 31, 8:35 PM MST | Winter Weather Advisory | MSO | 49 hr |
| Feb 5, 2:24 PM MST | Winter Weather Advisory | MSO | 31 hr |
| Feb 13, 2:16 PM MST | Winter Weather Advisory | MSO | 46 hr |
| Feb 15, 3:16 AM MST | High Wind Warning | MSO | 14 hr |
| Feb 18, 9:56 AM MST | Winter Weather Advisory | MSO | 23 hr |
| Feb 18, 2:26 PM MST | Wind Advisory | MSO | 19 hr |
| Feb 19, 12:20 PM MST | Winter Weather Advisory | MSO | 28 hr |
| Feb 19, 10:09 PM MST | Special Weather Statement | MSO | 66 min |
| Feb 19, 11:08 PM MST | Special Weather Statement | MSO | 67 min |
| Feb 28, 11:53 AM MST | Wind Advisory | MSO | 26 hr |
| Mar 1, 10:35 AM MST | Winter Weather Advisory | MSO | 24 hr |
| Mar 1, 10:46 AM MST | Wind Advisory | MSO | 21 hr |
| Mar 7, 1:59 PM MST | Winter Weather Advisory | MSO | 21 hr |
| Mar 10, 2:12 PM MST | Wind Advisory | MSO | 5 hr |
| Mar 13, 2:09 PM MDT | Winter Weather Advisory | MSO | 22 hr |
| Mar 14, 2:18 PM MDT | Winter Weather Advisory | MSO | 22 hr |
| Mar 16, 1:14 PM MDT | Winter Weather Advisory | MSO | 31 hr |
| Mar 21, 1:35 PM MDT | Winter Weather Advisory | MSO | 38 hr |
| Mar 27, 6:50 PM MDT | Winter Weather Advisory | MSO | 8 hr |
| Mar 27, 9:14 PM MDT | Winter Weather Advisory | MSO | 41 hr |
| Mar 28, 9:57 AM MDT | High Wind Watch | MSO | 5 hr |
| Apr 3, 8:50 PM MDT | Wind Advisory | MSO | 24 hr |
| Apr 4, 2:10 PM MDT | Winter Weather Advisory | MSO | 20 hr |
| Apr 4, 5:13 PM MDT | Special Weather Statement | MSO | 32 min |
| Apr 14, 6:35 AM MDT | Winter Weather Advisory | MSO | 5 hr |
| Apr 14, 12:43 PM MDT | Winter Weather Advisory | MSO | 29 hr |
| May 9, 12:25 PM MDT | Winter Weather Advisory | MSO | 24 hr |
| May 25, 7:50 AM MDT | Dense Fog Advisory | MSO | 70 min |
| Jun 7, 12:50 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 7, 2:07 PM MDT | Flash Flood Watch | MSO | 60 min |
| Jun 7, 3:07 PM MDT | Flash Flood Watch | MSO | 4 hr |
| Jun 7, 3:17 PM MDT | Special Weather Statement | MSO | 13 min |
| Jun 7, 3:28 PM MDT | Areal Flood Advisory | MSO | 62 min |
| Jun 7, 5:48 PM MDT | Areal Flood Advisory | MSO | 57 min |
| Jun 8, 2:39 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 8, 8:41 PM MDT | Special Weather Statement | MSO | 64 min |
| Jun 8, 9:12 PM MDT | Severe Thunderstorm Warning | MSO | 33 min |
| Jun 17, 2:16 PM MDT | Wind Advisory | MSO | 31 hr |
| Jul 3, 1:46 PM MDT | Red Flag Warning | MSO | 31 hr |
| Jul 10, 1:41 PM MDT | Special Weather Statement | TFX | 49 min |
| Jul 10, 1:45 PM MDT | Special Weather Statement | MSO | 45 min |
| Jul 21, 2:31 PM MDT | Red Flag Warning | MSO | 31 hr |
| Jul 29, 2:22 PM MDT | Fire Weather Watch | MSO | 24 hr |
| Jul 30, 2:13 PM MDT | Red Flag Warning | MSO | 30 hr |
| Jul 31, 8:11 PM MDT | Fire Weather Watch | MSO | 16 hr |
| Aug 1, 12:35 PM MDT | Red Flag Warning | MSO | 35 hr |
| Aug 5, 2:22 PM MDT | Fire Weather Watch | MSO | 21 hr |
| Aug 6, 11:01 AM MDT | Red Flag Warning | MSO | 10 hr |
| Aug 6, 2:37 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 1:52 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 3:46 PM MDT | Special Weather Statement | MSO | 59 min |
| Aug 7, 3:59 PM MDT | Severe Thunderstorm Warning | MSO | 46 min |
| Aug 8, 2:06 PM MDT | Fire Weather Watch | MSO | 13 hr |
| Aug 9, 3:14 AM MDT | Red Flag Warning | MSO | 18 hr |
| Aug 9, 2:19 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Aug 20, 2:18 PM MDT | Fire Weather Watch | MSO | 21 hr |
| Aug 21, 11:02 AM MDT | Red Flag Warning | MSO | 34 hr |
| Sep 1, 1:45 PM MDT | Red Flag Warning | MSO | 30 hr |
| Sep 2, 12:51 PM MDT | Winter Weather Advisory | MSO | 71 hr |
| Sep 10, 2:16 PM MDT | Winter Weather Advisory | MSO | 42 hr |
| Sep 12, 2:17 PM MDT | Freeze Warning | MSO | 19 hr |
| Oct 2, 3:14 AM MDT | Winter Weather Advisory | MSO | 45 hr |
| Oct 4, 2:08 PM MDT | Winter Weather Advisory | MSO | 22 hr |
| Oct 10, 9:54 AM MDT | Wind Advisory | MSO | 4 hr |
| Oct 10, 10:37 PM MDT | Winter Weather Advisory | MSO | 13 hr |
| Oct 19, 3:50 AM MDT | Winter Weather Advisory | MSO | 5 hr |
| Nov 15, 11:12 AM MST | Winter Weather Advisory | MSO | 22 hr |
| Nov 22, 12:15 PM MST | Winter Weather Advisory | MSO | 45 hr |
| Nov 23, 5:37 PM MST | Special Weather Statement | MSO | 38 min |
| Nov 27, 3:47 AM MST | Winter Weather Advisory | MSO | 40 hr |
| Nov 28, 8:03 PM MST | Winter Weather Advisory | MSO | 12 hr |
| Nov 29, 1:12 PM MST | Winter Weather Advisory | MSO | 62 hr |
| Dec 2, 2:43 PM MST | Winter Storm Watch | MSO | 43 hr |
| Dec 2, 2:43 PM MST | Winter Weather Advisory | MSO | 20 hr |
| Dec 3, 2:19 PM MST | Winter Weather Advisory | MSO | 45 hr |
| Dec 5, 2:21 PM MST | Wind Chill Advisory | MSO | 46 hr |
| Dec 9, 12:08 PM MST | Winter Weather Advisory | MSO | 23 hr |
| Dec 11, 2:00 PM MST | Winter Weather Advisory | MSO | 24 hr |
| Dec 12, 9:04 PM MST | Winter Weather Advisory | MSO | 12 hr |
| Dec 14, 3:24 AM MST | Winter Weather Advisory | MSO | 3 days |
| Dec 15, 5:58 AM MST | Winter Storm Warning | MSO | 5 hr |
| Dec 15, 3:14 PM MST | Winter Storm Warning | MSO | 31 hr |
| Dec 18, 8:12 AM MST | Winter Weather Advisory | MSO | 32 hr |
| Dec 19, 4:20 AM MST | Wind Advisory | MSO | 12 hr |
| Dec 19, 2:01 PM MST | Winter Weather Advisory | MSO | 34 hr |
| Dec 20, 2:45 AM MST | High Wind Warning | MSO | 15 hr |
| Dec 22, 2:49 PM MST | Winter Weather Advisory | MSO | 71 hr |
| Dec 26, 3:31 AM MST | Winter Weather Advisory | MSO | 55 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 | 2 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 9 |
| Flooding | |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 44 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Wind Advisory | 8 |
| Fire | |
| Red Flag Warning | 8 |
| Fire Weather Watch | 5 |
| 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 archive20152017
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.