Alert archive / Idaho / Lemhi County
Weather alerts in Lemhi County, Idaho, 2025
82 weather alerts in 2025, 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 2025. Tap one for its archive.
- Alerts
- 82
- Warnings
- 10
- Watches
- 7
- Advisories
- 36
- Busiest month
- July17 alerts
- Busiest day
- June 11, 20256 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, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 0 | 5 | 0% | |||
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Missoula, MT: severe thunderstorm warnings | 9 | 2 | 78% | 12 | 17% | 21 min |
| NWS Missoula, MT: flash flood warnings | 3 | 0 | 100% | 8 | 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, 1:02 PM MST | Winter Weather Advisory | MSO | 46 hr |
| Jan 17, 12:12 PM MST | Cold Weather Advisory | MSO | 71 hr |
| Jan 25, 9:43 AM MST | Air Stagnation Advisory | MSO | 6 days |
| Jan 29, 1:01 PM MST | Winter Storm Watch | MSO | 5 days |
| Jan 30, 11:43 AM MST | Winter Weather Advisory | MSO | 50 hr |
| Feb 1, 2:30 PM MST | Winter Weather Advisory | MSO | 4 days |
| Feb 5, 10:04 AM MST | Snow Squall Warning | MSO | 41 min |
| Feb 6, 2:13 PM MST | Winter Storm Warning | MSO | 23 hr |
| Feb 6, 2:20 PM MST | Winter Weather Advisory | MSO | 30 hr |
| Feb 7, 9:52 AM MST | Special Weather Statement | MSO | 38 min |
| Feb 12, 11:26 AM MST | Cold Weather Advisory | MSO | 24 hr |
| Feb 15, 1:19 PM MST | Winter Weather Advisory | MSO | 68 hr |
| Feb 18, 12:24 PM MST | Winter Weather Advisory | MSO | 44 hr |
| Feb 23, 8:20 PM MST | Winter Weather Advisory | MSO | 12 hr |
| Mar 15, 12:56 PM MDT | Wind Advisory | MSO | 32 hr |
| Mar 20, 9:56 AM MDT | Winter Weather Advisory | MSO | 50 hr |
| Mar 29, 9:33 AM MDT | Winter Weather Advisory | MSO | 23 hr |
| Apr 15, 2:07 PM MDT | Wind Advisory | MSO | 52 hr |
| Apr 27, 10:41 AM MDT | Winter Weather Advisory | MSO | 22 hr |
| May 10, 2:26 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 10, 9:07 PM MDT | Wind Advisory | MSO | 24 hr |
| May 11, 4:49 PM MDT | Special Weather Statement | MSO | 26 min |
| May 12, 12:48 PM MDT | Winter Weather Advisory | MSO | 23 hr |
| May 16, 1:24 PM MDT | Winter Storm Watch | MSO | 24 hr |
| May 17, 1:13 PM MDT | Winter Storm Warning | MSO | 19 hr |
| May 29, 11:35 AM MDT | Heat Advisory | MSO | 61 hr |
| Jun 2, 2:07 PM MDT | Frost Advisory | MSO | 18 hr |
| Jun 10, 1:57 PM MDT | Special Weather Statement | MSO | 48 min |
| Jun 11, 12:01 PM MDT | Special Weather Statement | MSO | 44 min |
| Jun 11, 12:44 PM MDT | Special Weather Statement | MSO | 31 min |
| Jun 11, 12:45 PM MDT | Special Weather Statement | MSO | 30 min |
| Jun 11, 1:15 PM MDT | Special Weather Statement | MSO | 30 min |
| Jun 11, 1:57 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Jun 11, 4:02 PM MDT | Special Weather Statement | MSO | 43 min |
| Jun 20, 12:17 PM MDT | Winter Weather Advisory | MSO | 48 hr |
| Jun 20, 12:32 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 22, 10:51 AM MDT | Frost Advisory | MSO | 22 hr |
| Jun 26, 2:45 PM MDT | Special Weather Statement | MSO | 30 min |
| Jul 1, 1:18 PM MDT | Special Weather Statement | MSO | 42 min |
| Jul 1, 3:07 PM MDT | Special Weather Statement | MSO | 38 min |
| Jul 1, 3:34 PM MDT | Special Weather Statement | MSO | 41 min |
| Jul 1, 4:12 PM MDT | Special Weather Statement | MSO | 48 min |
| Jul 3, 3:17 PM MDT | Special Weather Statement | MSO | 43 min |
| Jul 9, 1:48 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 14, 8:55 PM MDT | Red Flag Warning | PIH | 24 hr |
| Jul 18, 4:34 PM MDT | Special Weather Statement | MSO | 26 min |
| Jul 25, 4:08 PM MDT | Special Weather Statement | MSO | 52 min |
| Jul 26, 1:45 PM MDT | Areal Flood Advisory | MSO | 2 hr |
| Jul 26, 3:34 PM MDT | Special Weather Statement | MSO | 41 min |
| Jul 26, 3:46 PM MDT | Special Weather Statement | MSO | 29 min |
| Jul 27, 2:19 PM MDT | Special Weather Statement | MSO | 41 min |
| Jul 28, 1:02 PM MDT | Flood Watch | MSO | 32 hr |
| Jul 30, 11:06 AM MDT | Flood Watch | MSO | 34 hr |
| Jul 31, 2:34 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jul 31, 4:08 PM MDT | Flash Flood Warning | MSO | 2 hr |
| Aug 12, 11:56 AM MDT | Red Flag Warning | PIH | 33 hr |
| Aug 13, 10:04 PM MDT | Red Flag Warning | PIH | 23 hr |
| Aug 15, 8:56 PM MDT | Red Flag Warning | PIH | 24 hr |
| Aug 16, 9:04 PM MDT | Red Flag Warning | PIH | 24 hr |
| Aug 17, 4:25 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 26, 10:36 AM MDT | Flood Watch | MSO | 37 hr |
| Aug 27, 7:32 PM MDT | Areal Flood Advisory | MSO | 3 hr |
| Sep 7, 4:40 PM MDT | Areal Flood Advisory | MSO | 3 hr |
| Sep 9, 4:26 PM MDT | Areal Flood Advisory | MSO | 3 hr |
| Sep 9, 4:56 PM MDT | Special Weather Statement | MSO | 49 min |
| Sep 11, 3:51 PM MDT | Areal Flood Advisory | MSO | 3 hr |
| Sep 14, 2:10 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 14, 4:40 PM MDT | Special Weather Statement | MSO | 50 min |
| Sep 14, 7:22 PM MDT | Special Weather Statement | MSO | 53 min |
| Sep 22, 12:15 PM MDT | Frost Advisory | MSO | 22 hr |
| Oct 9, 12:16 PM MDT | Winter Storm Watch | MSO | 49 hr |
| Oct 10, 12:47 PM MDT | Winter Weather Advisory | MSO | 71 hr |
| Oct 24, 2:28 PM MDT | Winter Weather Advisory | MSO | 70 hr |
| Dec 4, 1:02 PM MST | Winter Weather Advisory | MSO | 45 hr |
| Dec 14, 1:43 PM MST | High Wind Watch | MSO | 45 hr |
| Dec 16, 10:26 AM MST | High Wind Warning | MSO | 34 hr |
| Dec 17, 12:43 PM MST | Winter Weather Advisory | MSO | 70 hr |
| Dec 21, 2:40 AM MST | Winter Weather Advisory | MSO | 32 hr |
| Dec 22, 1:21 PM MST | Winter Weather Advisory | MSO | 25 hr |
| Dec 23, 9:24 PM MST | Dense Fog Advisory | MSO | 11 hr |
| Dec 24, 5:57 PM MST | Winter Weather Advisory | MSO | 11 hr |
| Dec 25, 1:45 PM MST | Winter Weather Advisory | MSO | 54 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 | |
| Mesoscale Discussion | 7 |
| Special Weather Statement | 22 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flood Watch | 3 |
| Areal Flood Advisory | 5 |
| Winter | |
| Snow Squall Warning | 1 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 20 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Cold Weather Advisory | 2 |
| Frost Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 5 |
| Fog and smoke | |
| Air Stagnation Advisory | 1 |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.