Alert archive / Montana / Ravalli County
Weather alerts in Ravalli 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.
Ravalli County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 95
- Warnings
- 13
- Watches
- 7
- Advisories
- 62
- Busiest month
- December23 alerts
- Busiest day
- January 30, 20163 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Ravalli County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 3 | 25% | 6 | 33% | 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 8, 5:27 PM MST | Winter Weather Advisory | MSO | 16 hr |
| Jan 12, 2:16 PM MST | Winter Weather Advisory | MSO | 67 hr |
| Jan 15, 12:19 PM MST | Winter Weather Advisory | MSO | 47 hr |
| Jan 17, 2:14 PM MST | Freezing Rain Advisory | MSO | 19 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 28, 5:22 AM MST | Dense Fog Advisory | MSO | 4 hr |
| Jan 28, 2:36 PM MST | Winter Weather Advisory | MSO | 21 hr |
| Jan 29, 4:54 AM MST | Winter Weather Advisory | MSO | 28 hr |
| Jan 30, 9:07 AM MST | Special Weather Statement | MSO | 38 min |
| Jan 30, 10:03 AM MST | Special Weather Statement | MSO | 42 min |
| 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 3, 4:16 AM MST | Winter Weather Advisory | MSO | 40 hr |
| Feb 5, 2:24 PM MST | Winter Weather Advisory | MSO | 31 hr |
| Feb 10, 6:23 AM MST | Freezing Fog Advisory | MSO | 5 hr |
| Feb 13, 2:16 PM MST | Winter Weather Advisory | MSO | 46 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 28, 11:52 AM MST | Winter Weather Advisory | MSO | 21 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 12, 12:02 PM MST | Winter Weather Advisory | MSO | 17 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 15, 11:57 PM MDT | Winter Weather Advisory | MSO | 9 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 23, 2:31 PM MDT | Winter Weather Advisory | MSO | 53 hr |
| Mar 28, 9:57 AM MDT | High Wind Watch | MSO | 5 hr |
| Mar 28, 3:19 PM MDT | Wind Advisory | MSO | 29 hr |
| Apr 3, 8:50 PM MDT | Wind Advisory | MSO | 24 hr |
| May 9, 12:25 PM MDT | Winter Weather Advisory | MSO | 24 hr |
| Jun 6, 7:33 PM MDT | Special Weather Statement | MSO | 42 min |
| Jun 6, 8:44 PM MDT | Special Weather Statement | MSO | 31 min |
| Jun 8, 9:05 PM MDT | Special Weather Statement | MSO | 40 min |
| Jun 17, 2:16 PM MDT | Wind Advisory | MSO | 31 hr |
| Jun 24, 8:10 AM MDT | Special Weather Statement | MSO | 35 min |
| Jul 9, 8:31 PM MDT | Special Weather Statement | MSO | 44 min |
| Jul 9, 9:06 PM MDT | Severe Thunderstorm Warning | MSO | 39 min |
| Jul 15, 3:14 PM MDT | Special Weather Statement | MSO | 31 min |
| Jul 15, 4:58 PM MDT | Special Weather Statement | MSO | 32 min |
| Jul 17, 9:27 PM MDT | Severe Thunderstorm Warning | MSO | 33 min |
| 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 6, 2:11 PM MDT | Special Weather Statement | MSO | 49 min |
| Aug 6, 3:21 PM MDT | Special Weather Statement | MSO | 39 min |
| Aug 6, 4:18 PM MDT | Severe Thunderstorm Warning | MSO | 42 min |
| Aug 8, 8:09 PM MDT | Special Weather Statement | MSO | 36 min |
| Aug 9, 1:45 PM MDT | Special Weather Statement | MSO | 45 min |
| Aug 9, 1:56 PM MDT | Severe Thunderstorm Warning | MSO | 34 min |
| Aug 17, 2:13 PM MDT | Wind Advisory | MSO | 40 hr |
| Aug 21, 11:02 AM MDT | Red Flag Warning | MSO | 34 hr |
| Aug 30, 8:48 AM MDT | Red Flag Warning | MSO | 10 hr |
| Sep 2, 12:51 PM MDT | Winter Weather Advisory | MSO | 71 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 11, 2:26 PM MDT | Freeze Warning | MSO | 20 hr |
| Oct 16, 8:32 PM MDT | Winter Weather Advisory | MSO | 14 hr |
| Nov 9, 7:19 AM MST | Dense Fog Advisory | MSO | 5 hr |
| Nov 10, 7:07 AM MST | Dense Fog Advisory | MSO | 5 hr |
| Nov 10, 9:28 PM MST | Dense Fog Advisory | MSO | 16 hr |
| Nov 15, 11:12 AM MST | Winter Weather Advisory | MSO | 22 hr |
| Nov 22, 5:30 AM MST | Winter Weather Advisory | MSO | 3 hr |
| Nov 22, 12:15 PM MST | Winter Weather Advisory | MSO | 45 hr |
| Nov 27, 3:47 AM MST | Winter Weather Advisory | MSO | 40 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 Storm Warning | MSO | 45 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 6, 2:38 PM MST | Winter Storm Watch | MSO | 43 hr |
| Dec 8, 10:01 AM MST | Winter Weather Advisory | MSO | 23 hr |
| Dec 9, 12:08 PM MST | Winter Weather Advisory | MSO | 23 hr |
| Dec 10, 2:34 PM MST | Winter Storm Watch | MSO | 26 hr |
| Dec 10, 2:34 PM MST | Winter Weather Advisory | MSO | 48 hr |
| Dec 11, 9:44 AM MST | Winter Storm Warning | MSO | 34 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 16, 4:51 PM MST | Wind Chill Advisory | MSO | 15 hr |
| Dec 18, 8:12 AM MST | Winter Weather Advisory | MSO | 32 hr |
| Dec 19, 4:14 AM MST | Winter Storm Watch | MSO | 10 hr |
| Dec 19, 2:01 PM MST | Winter Storm Warning | MSO | 28 hr |
| Dec 19, 2:01 PM MST | Winter Weather Advisory | MSO | 34 hr |
| Dec 20, 10:11 AM MST | Wind Advisory | MSO | 8 hr |
| Dec 22, 2:49 PM MST | Winter Weather Advisory | MSO | 71 hr |
| Dec 26, 3:31 AM MST | Winter Storm Watch | MSO | 11 hr |
| Dec 26, 3:31 AM MST | Winter Weather Advisory | MSO | 55 hr |
| Dec 29, 2:52 PM MST | Winter Weather Advisory | MSO | 22 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 |
| Special Weather Statement | 13 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 5 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 45 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 8 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Freezing 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.