Alert archive / Idaho / Lemhi County
Weather alerts in Lemhi County, Idaho, 2022
86 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lemhi County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 86
- Warnings
- 20
- Watches
- 11
- Advisories
- 40
- Busiest month
- July19 alerts
- Busiest day
- August 12, 20226 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Lemhi County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 2 | 0% | 7 | 14% | 1 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Missoula, MT: severe thunderstorm warnings | 76 | 39 | 49% | 90 | 74% | 16 min |
| NWS Missoula, MT: flash flood warnings | 0 | 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 2, 11:07 AM MST | Winter Weather Advisory | MSO | 48 hr |
| Jan 4, 12:34 PM MST | Winter Weather Advisory | MSO | 4 days |
| Jan 9, 1:03 PM MST | Air Stagnation Advisory | MSO | 5 days |
| Jan 19, 2:46 PM MST | Winter Weather Advisory | MSO | 34 hr |
| Jan 24, 11:12 AM MST | Winter Weather Advisory | MSO | 9 hr |
| Jan 25, 1:18 PM MST | Air Stagnation Advisory | MSO | 5 days |
| Feb 14, 2:50 AM MST | Winter Weather Advisory | MSO | 32 hr |
| Feb 21, 5:11 AM MST | Wind Chill Advisory | MSO | 51 hr |
| Feb 26, 2:13 PM MST | Winter Weather Advisory | MSO | 69 hr |
| Mar 4, 2:41 PM MST | Winter Weather Advisory | MSO | 18 hr |
| Mar 7, 11:25 AM MST | Winter Weather Advisory | MSO | 37 hr |
| Mar 8, 10:02 AM MST | Winter Weather Advisory | MSO | 14 hr |
| Apr 3, 1:18 AM MDT | High Wind Watch | MSO | 26 hr |
| Apr 3, 3:07 PM MDT | Winter Weather Advisory | MSO | 57 hr |
| Apr 4, 3:01 AM MDT | High Wind Warning | MSO | 25 hr |
| Apr 4, 4:46 PM MDT | Snow Squall Warning | MSO | 29 min |
| Apr 9, 2:28 PM MDT | Winter Storm Watch | MSO | 35 hr |
| Apr 10, 2:44 PM MDT | Winter Storm Warning | MSO | 45 hr |
| Apr 21, 2:40 PM MDT | Winter Weather Advisory | MSO | 20 hr |
| Apr 28, 2:50 AM MDT | Winter Weather Advisory | MSO | 30 hr |
| May 1, 1:16 PM MDT | Winter Weather Advisory | MSO | 43 hr |
| May 7, 1:46 PM MDT | Winter Weather Advisory | MSO | 19 hr |
| May 18, 12:46 PM MDT | Wind Advisory | MSO | 26 hr |
| May 28, 2:32 PM MDT | Winter Weather Advisory | MSO | 42 hr |
| Jun 13, 3:04 PM MDT | River Flood Advisory | MSO | 24 hr |
| Jun 16, 2:06 PM MDT | Wind Advisory | MSO | 29 hr |
| Jun 18, 3:47 AM MDT | Wind Advisory | MSO | 17 hr |
| Jul 3, 2:39 PM MDT | Severe Thunderstorm Warning | MSO | 36 min |
| Jul 6, 3:39 PM MDT | Special Weather Statement | MSO | 36 min |
| Jul 7, 2:08 PM MDT | Special Weather Statement | MSO | 37 min |
| Jul 7, 2:55 PM MDT | Special Weather Statement | MSO | 35 min |
| Jul 7, 3:14 PM MDT | Areal Flood Advisory | MSO | 107 min |
| Jul 8, 2:41 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Jul 9, 6:59 PM MDT | Special Weather Statement | MSO | 31 min |
| Jul 13, 2:49 PM MDT | Special Weather Statement | MSO | 41 min |
| Jul 13, 3:24 PM MDT | Special Weather Statement | MSO | 21 min |
| Jul 13, 3:30 PM MDT | Severe Thunderstorm Warning | MSO | 15 min |
| Jul 17, 1:29 PM MDT | Wind Advisory | MSO | 31 hr |
| Jul 17, 2:34 PM MDT | Red Flag Warning | PIH | 30 hr |
| Jul 20, 2:19 PM MDT | Fire Weather Watch | PIH | 23 hr |
| Jul 21, 1:02 PM MDT | Red Flag Warning | PIH | 32 hr |
| Jul 26, 12:52 PM MDT | Fire Weather Watch | PIH | 24 hr |
| Jul 27, 12:49 PM MDT | Red Flag Warning | PIH | 32 hr |
| Jul 28, 1:06 PM MDT | Fire Weather Watch | PIH | 15 hr |
| Jul 29, 3:38 AM MDT | Red Flag Warning | PIH | 18 hr |
| Jul 29, 3:41 PM MDT | Special Weather Statement | MSO | 49 min |
| Aug 3, 2:06 PM MDT | Red Flag Warning | PIH | 31 hr |
| Aug 11, 4:10 PM MDT | Special Weather Statement | MSO | 65 min |
| Aug 12, 1:13 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Aug 12, 1:55 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 12, 3:21 PM MDT | Special Weather Statement | MSO | 39 min |
| Aug 12, 4:39 PM MDT | Special Weather Statement | PIH | 36 min |
| Aug 12, 4:41 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Aug 12, 5:22 PM MDT | Special Weather Statement | MSO | 38 min |
| Aug 21, 1:34 PM MDT | Red Flag Warning | PIH | 31 hr |
| Aug 26, 1:46 PM MDT | Red Flag Warning | PIH | 30 hr |
| Sep 1, 1:14 PM MDT | Fire Weather Watch | PIH | 24 hr |
| Sep 2, 1:18 PM MDT | Red Flag Warning | PIH | 32 hr |
| Sep 3, 11:54 AM MDT | Red Flag Warning | PIH | 33 hr |
| Sep 5, 12:04 PM MDT | Fire Weather Watch | PIH | 26 hr |
| Sep 6, 2:01 PM MDT | Fire Weather Watch | PIH | 23 hr |
| Sep 6, 2:01 PM MDT | Red Flag Warning | PIH | 31 hr |
| Sep 7, 12:44 PM MDT | Red Flag Warning | PIH | 32 hr |
| Sep 7, 9:35 PM MDT | Special Weather Statement | MSO | 40 min |
| Sep 9, 2:46 PM MDT | Fire Weather Watch | PIH | 24 hr |
| Sep 14, 3:06 AM MDT | Dense Fog Advisory | MSO | 9 hr |
| Oct 16, 1:41 PM MDT | Air Stagnation Advisory | MSO | 37 min |
| Oct 16, 1:42 PM MDT | Air Stagnation Advisory | MSO | 4 days |
| Oct 20, 3:14 PM MDT | Winter Storm Watch | MSO | 23 hr |
| Oct 21, 2:30 PM MDT | Winter Storm Warning | MSO | 58 hr |
| Nov 3, 12:09 PM MDT | Winter Weather Advisory | MSO | 51 hr |
| Nov 6, 3:06 PM MST | Winter Weather Advisory | MSO | 43 hr |
| Nov 8, 1:15 PM MST | Winter Weather Advisory | MSO | 40 hr |
| Nov 15, 12:31 PM MST | Winter Weather Advisory | MSO | 47 hr |
| Nov 18, 1:16 PM MST | Air Stagnation Advisory | MSO | 5 days |
| Nov 26, 12:36 PM MST | Winter Weather Advisory | MSO | 44 hr |
| Nov 27, 4:17 PM MST | Snow Squall Warning | MSO | 58 min |
| Nov 27, 6:01 PM MST | Snow Squall Warning | MSO | 59 min |
| Nov 29, 2:15 PM MST | Winter Weather Advisory | MSO | 64 hr |
| Dec 1, 10:43 AM MST | Snow Squall Warning | MSO | 47 min |
| Dec 3, 2:36 PM MST | Winter Weather Advisory | MSO | 46 hr |
| Dec 10, 1:24 PM MST | Winter Weather Advisory | MSO | 49 hr |
| Dec 13, 2:48 PM MST | Winter Weather Advisory | MSO | 36 hr |
| Dec 20, 4:47 AM MST | Winter Weather Advisory | MSO | 28 hr |
| Dec 26, 10:33 AM MST | Winter Weather Advisory | MSO | 24 hr |
| Dec 29, 11:04 AM MST | Winter Weather Advisory | MSO | 48 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 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 12 |
| Flooding | |
| Areal Flood Advisory | 1 |
| River Flood Advisory | 1 |
| Winter | |
| Snow Squall Warning | 4 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 27 |
| Cold | |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 11 |
| Fire Weather Watch | 7 |
| Fog and smoke | |
| Air Stagnation Advisory | 5 |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20212023
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.