Alert archive / Montana / Lake County
Weather alerts in Lake County, Montana, 2015
111 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lake County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 111
- Warnings
- 20
- Watches
- 14
- Advisories
- 62
- Busiest month
- August23 alerts
- Busiest day
- June 1, 20153 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Lake County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 1 | 0% | 2 | 50% | 12 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Missoula, MT: severe thunderstorm warnings | 19 | 8 | 58% | 18 | 67% | 14 min |
| NWS Missoula, MT: flash flood warnings | 1 | 0 | 100% | 3 | 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 1, 2:33 PM MST | Winter Weather Advisory | MSO | 44 hr |
| Jan 2, 2:41 PM MST | Winter Storm Watch | MSO | 46 hr |
| Jan 3, 2:04 PM MST | Winter Storm Warning | MSO | 23 hr |
| Jan 3, 2:04 PM MST | Winter Weather Advisory | MSO | 23 hr |
| Jan 4, 12:54 PM MST | Winter Storm Warning | MSO | 64 hr |
| Jan 6, 11:01 AM MST | Winter Weather Advisory | MSO | 21 hr |
| Jan 8, 1:52 PM MST | Wind Chill Advisory | MSO | 18 hr |
| Jan 10, 12:22 PM MST | Winter Weather Advisory | MSO | 25 hr |
| Jan 15, 11:11 AM MST | Winter Weather Advisory | MSO | 27 hr |
| Jan 16, 3:01 PM MST | Winter Weather Advisory | MSO | 44 hr |
| Jan 19, 9:39 AM MST | Winter Weather Advisory | MSO | 23 hr |
| Jan 23, 2:32 PM MST | Winter Weather Advisory | MSO | 20 hr |
| Jan 25, 6:35 AM MST | Dense Fog Advisory | MSO | 7 hr |
| Feb 1, 4:07 AM MST | Winter Weather Advisory | MSO | 29 hr |
| Feb 2, 1:06 PM MST | Winter Weather Advisory | MSO | 45 hr |
| Feb 4, 8:51 PM MST | Winter Weather Advisory | MSO | 12 hr |
| Feb 8, 9:22 PM MST | Winter Weather Advisory | MSO | 37 hr |
| Feb 20, 2:20 PM MST | Winter Weather Advisory | MSO | 21 hr |
| Feb 24, 2:37 PM MST | Winter Weather Advisory | MSO | 23 hr |
| Feb 25, 8:55 PM MST | Winter Weather Advisory | MSO | 15 hr |
| Feb 27, 11:49 AM MST | Wind Chill Advisory | MSO | 23 hr |
| Mar 1, 5:28 AM MST | Winter Weather Advisory | MSO | 53 hr |
| Mar 2, 9:07 AM MST | Winter Storm Warning | MSO | 17 hr |
| Mar 14, 2:53 PM MDT | Winter Weather Advisory | MSO | 45 hr |
| Mar 23, 2:59 PM MDT | Winter Weather Advisory | MSO | 42 hr |
| Mar 27, 9:46 AM MDT | Lake Wind Advisory | MSO | 35 hr |
| Mar 27, 9:46 AM MDT | Wind Advisory | MSO | 35 hr |
| Mar 31, 3:39 AM MDT | Lake Wind Advisory | MSO | 18 hr |
| Apr 2, 9:11 PM MDT | Freeze Warning | MSO | 11 hr |
| Apr 4, 1:54 PM MDT | Winter Weather Advisory | MSO | 55 hr |
| Apr 10, 8:45 AM MDT | Lake Wind Advisory | MSO | 35 hr |
| Apr 11, 3:32 AM MDT | Wind Advisory | MSO | 16 hr |
| May 6, 2:34 PM MDT | Lake Wind Advisory | MSO | 21 hr |
| May 13, 9:05 AM MDT | Special Weather Statement | MSO | 85 min |
| May 30, 2:00 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 4:25 PM MDT | Special Weather Statement | MSO | 65 min |
| Jun 1, 9:09 AM MDT | Flash Flood Watch | MSO | 22 min |
| Jun 1, 3:27 PM MDT | Special Weather Statement | MSO | 33 min |
| Jun 1, 4:56 PM MDT | Special Weather Statement | MSO | 64 min |
| Jun 1, 6:25 PM MDT | Special Weather Statement | MSO | 50 min |
| Jun 12, 10:22 AM MDT | Wind Advisory | MSO | 11 hr |
| Jun 19, 3:46 AM MDT | Lake Wind Advisory | MSO | 17 hr |
| Jun 25, 1:58 PM MDT | Heat Advisory | MSO | 3 days |
| Jul 2, 12:39 PM MDT | Fire Weather Watch | MSO | 24 hr |
| Jul 3, 1:07 PM MDT | Red Flag Warning | MSO | 32 hr |
| Jul 5, 8:07 AM MDT | Lake Wind Advisory | MSO | 13 hr |
| Jul 7, 5:14 AM MDT | Red Flag Warning | MSO | 16 hr |
| Jul 15, 2:14 PM MDT | Special Weather Statement | MSO | 46 min |
| Jul 22, 4:59 AM MDT | Red Flag Warning | MSO | 16 hr |
| Jul 25, 3:50 AM MDT | Lake Wind Advisory | MSO | 15 hr |
| Jul 31, 11:44 AM MDT | Fire Weather Watch | MSO | 17 hr |
| Aug 1, 4:19 AM MDT | Red Flag Warning | MSO | 17 hr |
| Aug 5, 10:20 AM MDT | Red Flag Warning | MSO | 11 hr |
| Aug 6, 3:39 AM MDT | Lake Wind Advisory | MSO | 13 hr |
| Aug 9, 9:19 AM MDT | Fire Weather Watch | MSO | 26 hr |
| Aug 10, 11:16 AM MDT | Red Flag Warning | MSO | 12 hr |
| Aug 10, 7:12 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Aug 10, 7:18 PM MDT | Severe Thunderstorm Warning | MSO | 42 min |
| Aug 11, 4:08 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Aug 13, 4:31 AM MDT | Fire Weather Watch | MSO | 10 hr |
| Aug 13, 2:35 PM MDT | Red Flag Warning | MSO | 38 hr |
| Aug 14, 1:35 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 2:23 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 14, 4:15 PM MDT | Areal Flood Advisory | MSO | 2 hr |
| Aug 19, 2:18 PM MDT | Fire Weather Watch | MSO | 24 hr |
| Aug 19, 2:18 PM MDT | Red Flag Warning | MSO | 31 hr |
| Aug 20, 2:28 PM MDT | Red Flag Warning | MSO | 31 hr |
| Aug 21, 9:50 AM MDT | Lake Wind Advisory | MSO | 14 hr |
| Aug 21, 11:05 AM MDT | Frost Advisory | MSO | 45 hr |
| Aug 21, 10:14 PM MDT | Special Weather Statement | MSO | 46 min |
| Aug 23, 3:33 AM MDT | Fire Weather Watch | MSO | 30 hr |
| Aug 27, 1:24 PM MDT | Fire Weather Watch | MSO | 21 hr |
| Aug 28, 10:33 AM MDT | Red Flag Warning | MSO | 34 hr |
| Aug 28, 10:46 AM MDT | Lake Wind Advisory | MSO | 33 hr |
| Sep 4, 11:09 AM MDT | Winter Weather Advisory | MSO | 46 hr |
| Sep 19, 1:56 PM MDT | Wind Advisory | MSO | 30 hr |
| Oct 2, 1:20 PM MDT | Wind Advisory | MSO | 38 hr |
| Oct 2, 3:08 PM MDT | Winter Weather Advisory | MSO | 27 hr |
| Oct 9, 12:24 PM MDT | Wind Advisory | MSO | 57 hr |
| Oct 25, 2:07 PM MDT | Winter Weather Advisory | MSO | 45 hr |
| Oct 30, 8:53 AM MDT | Lake Wind Advisory | MSO | 11 hr |
| Nov 1, 3:55 AM MST | Lake Wind Advisory | MSO | 14 hr |
| Nov 5, 3:46 AM MST | Winter Weather Advisory | MSO | 28 hr |
| Nov 5, 11:52 PM MST | Special Weather Statement | MSO | 83 min |
| Nov 6, 2:55 AM MST | Special Weather Statement | MSO | 80 min |
| Nov 8, 2:36 PM MST | Winter Weather Advisory | MSO | 44 hr |
| Nov 10, 2:47 PM MST | Winter Weather Advisory | MSO | 41 hr |
| Nov 11, 2:24 PM MST | Special Weather Statement | MSO | 51 min |
| Nov 12, 6:51 PM MST | Lake Wind Advisory | MSO | 24 hr |
| Nov 16, 11:27 AM MST | High Wind Warning | MSO | 44 hr |
| Nov 16, 11:31 AM MST | Winter Storm Warning | MSO | 47 hr |
| Nov 18, 4:42 AM MST | Winter Weather Advisory | MSO | 9 hr |
| Nov 18, 2:50 PM MST | Winter Weather Advisory | MSO | 44 hr |
| Nov 22, 2:29 PM MST | Winter Storm Watch | MSO | 24 hr |
| Nov 23, 2:09 PM MST | Winter Storm Warning | MSO | 43 hr |
| Dec 3, 7:57 AM MST | Winter Weather Advisory | MSO | 27 hr |
| Dec 7, 10:59 AM MST | Flood Watch | MSO | 23 hr |
| Dec 9, 8:19 AM MST | Wind Advisory | MSO | 9 hr |
| Dec 10, 3:23 AM MST | Winter Weather Advisory | MSO | 30 hr |
| Dec 11, 2:47 PM MST | Winter Storm Watch | MSO | 24 hr |
| Dec 12, 2:45 PM MST | Winter Storm Warning | MSO | 56 hr |
| Dec 12, 2:45 PM MST | Winter Weather Advisory | MSO | 50 hr |
| Dec 15, 10:35 AM MST | Winter Weather Advisory | MSO | 46 hr |
| Dec 16, 7:52 AM MST | Winter Storm Warning | MSO | 7 hr |
| Dec 17, 11:39 AM MST | Winter Storm Watch | MSO | 16 hr |
| Dec 17, 11:39 AM MST | Winter Weather Advisory | MSO | 59 hr |
| Dec 20, 2:31 PM MST | Winter Weather Advisory | MSO | 47 hr |
| Dec 22, 2:12 PM MST | Special Weather Statement | MSO | 63 min |
| Dec 22, 2:47 PM MST | Winter Weather Advisory | MSO | 53 hr |
| Dec 25, 12:42 PM MST | Winter Weather Advisory | MSO | 21 hr |
| Dec 28, 10:25 AM MST | Winter Weather Advisory | MSO | 25 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 | 1 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 11 |
| Flooding | |
| Flash Flood Watch | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 7 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 36 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| Lake Wind Advisory | 13 |
| Wind Advisory | 7 |
| Fire | |
| Red Flag Warning | 10 |
| 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 archive20142016
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.