Alert archive / Idaho / Lemhi County
Weather alerts in Lemhi County, Idaho, 2024
105 weather alerts in 2024, 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 2024. Tap one for its archive.
- Alerts
- 105
- Warnings
- 32
- Watches
- 9
- Advisories
- 36
- Busiest month
- August30 alerts
- Busiest day
- August 18, 20245 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, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 1 | 0% | 4 | 25% | 14 min |
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Missoula, MT: severe thunderstorm warnings | 32 | 19 | 41% | 108 | 44% | 15 min |
| NWS Missoula, MT: flash flood warnings | 4 | 0 | 100% | 2 | 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, 1:08 PM MST | Winter Weather Advisory | MSO | 49 hr |
| Jan 7, 2:57 PM MST | Winter Weather Advisory | MSO | 68 hr |
| Jan 10, 1:13 PM MST | Winter Weather Advisory | MSO | 52 hr |
| Jan 12, 8:38 AM MST | Wind Chill Advisory | MSO | 26 hr |
| Jan 15, 2:11 PM MST | Winter Weather Advisory | MSO | 67 hr |
| Jan 17, 12:49 PM MST | Mesoscale Discussion | SPC | 4 hr |
| Jan 28, 6:30 AM MST | Winter Weather Advisory | MSO | 5 hr |
| Feb 2, 3:04 AM MST | Winter Weather Advisory | MSO | 62 hr |
| Feb 6, 11:41 AM MST | Winter Weather Advisory | MSO | 3 days |
| Feb 8, 12:44 PM MST | Winter Weather Advisory | MSO | 22 hr |
| Feb 13, 1:52 PM MST | Winter Weather Advisory | MSO | 66 hr |
| Feb 23, 10:44 AM MST | High Wind Watch | MSO | 26 hr |
| Feb 24, 1:06 PM MST | High Wind Warning | MSO | 46 hr |
| Feb 26, 10:47 AM MST | Winter Weather Advisory | MSO | 24 hr |
| Feb 28, 10:17 AM MST | High Wind Warning | MSO | 37 hr |
| Feb 29, 10:03 AM MST | Winter Weather Advisory | MSO | 23 hr |
| Mar 1, 1:52 PM MST | Winter Weather Advisory | MSO | 39 hr |
| Mar 5, 2:34 AM MST | Winter Weather Advisory | MSO | 8 hr |
| Apr 12, 3:42 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 26, 9:06 AM MDT | Winter Weather Advisory | MSO | 27 hr |
| Apr 28, 10:22 AM MDT | Winter Weather Advisory | MSO | 26 hr |
| May 5, 9:28 AM MDT | Winter Weather Advisory | MSO | 27 hr |
| May 16, 10:04 AM MDT | Wind Advisory | MSO | 34 hr |
| May 20, 10:19 AM MDT | Winter Storm Watch | MSO | 46 hr |
| May 22, 8:25 AM MDT | Winter Weather Advisory | MSO | 28 hr |
| May 28, 1:13 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| May 29, 12:48 PM MDT | Frost Advisory | MSO | 43 hr |
| Jun 9, 12:58 PM MDT | Special Weather Statement | MSO | 32 min |
| Jun 9, 2:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jun 9, 2:51 PM MDT | Special Weather Statement | MSO | 24 min |
| Jun 14, 10:44 AM MDT | Wind Advisory | MSO | 33 hr |
| Jun 16, 1:07 PM MDT | Winter Weather Advisory | MSO | 44 hr |
| Jun 26, 3:46 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 26, 6:51 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jun 26, 6:58 PM MDT | Special Weather Statement | MSO | 47 min |
| Jun 26, 6:58 PM MDT | Special Weather Statement | MSO | 47 min |
| Jul 13, 8:35 AM MDT | Red Flag Warning | PIH | 12 hr |
| Jul 13, 2:32 PM MDT | Red Flag Warning | PIH | 30 hr |
| Jul 14, 1:33 PM MDT | Red Flag Warning | PIH | 28 hr |
| Jul 14, 3:12 PM MDT | Special Weather Statement | MSO | 33 min |
| Jul 23, 2:28 PM MDT | Red Flag Warning | PIH | 31 hr |
| Jul 24, 1:55 PM MDT | Red Flag Warning | PIH | 32 hr |
| Jul 25, 1:27 PM MDT | Red Flag Warning | PIH | 33 hr |
| Jul 26, 2:29 PM MDT | Red Flag Warning | PIH | 32 hr |
| Jul 28, 2:00 PM MDT | Red Flag Warning | PIH | 31 hr |
| Jul 29, 1:12 PM MDT | Red Flag Warning | PIH | 32 hr |
| Aug 3, 1:01 PM MDT | Red Flag Warning | PIH | 29 hr |
| Aug 5, 12:37 AM MDT | Red Flag Warning | PIH | 27 hr |
| Aug 5, 2:35 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Aug 5, 5:29 PM MDT | Special Weather Statement | MSO | 46 min |
| Aug 6, 3:36 AM MDT | Red Flag Warning | PIH | 17 hr |
| Aug 6, 9:32 PM MDT | Red Flag Warning | PIH | 23 hr |
| Aug 9, 2:24 PM MDT | Red Flag Warning | PIH | 31 hr |
| Aug 10, 4:16 PM MDT | Special Weather Statement | MSO | 29 min |
| Aug 10, 7:21 PM MDT | Special Weather Statement | MSO | 24 min |
| Aug 11, 1:38 PM MDT | Red Flag Warning | PIH | 31 hr |
| Aug 12, 12:41 PM MDT | Red Flag Warning | PIH | 32 hr |
| Aug 14, 1:58 PM MDT | Red Flag Warning | PIH | 31 hr |
| Aug 15, 3:19 PM MDT | Special Weather Statement | MSO | 41 min |
| Aug 18, 2:51 PM MDT | Special Weather Statement | MSO | 24 min |
| Aug 18, 3:39 PM MDT | Special Weather Statement | MSO | 36 min |
| Aug 18, 4:13 PM MDT | Areal Flood Advisory | MSO | 6 hr |
| Aug 18, 4:16 PM MDT | Severe Thunderstorm Warning | MSO | 29 min |
| Aug 18, 5:06 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 19, 3:49 AM MDT | Red Flag Warning | PIH | 10 hr |
| Aug 19, 2:21 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Aug 19, 2:33 PM MDT | Areal Flood Advisory | MSO | 3 hr |
| Aug 19, 2:48 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 19, 6:05 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Aug 21, 1:45 PM MDT | Red Flag Warning | PIH | 31 hr |
| Aug 23, 7:26 AM MDT | Wind Advisory | MSO | 12 hr |
| Aug 23, 12:31 PM MDT | Mesoscale Discussion | SPC | 119 min |
| Aug 23, 1:48 PM MDT | Special Weather Statement | MSO | 27 min |
| Aug 23, 5:04 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Aug 28, 12:37 PM MDT | Frost Advisory | MSO | 20 hr |
| Aug 31, 2:22 PM MDT | Fire Weather Watch | PIH | 24 hr |
| Sep 1, 2:33 PM MDT | Red Flag Warning | PIH | 50 hr |
| Sep 2, 2:56 PM MDT | Mesoscale Discussion | SPC | 94 min |
| Sep 2, 6:57 PM MDT | Special Weather Statement | MSO | 18 min |
| Sep 2, 7:40 PM MDT | Special Weather Statement | TFX | 35 min |
| Sep 3, 1:43 PM MDT | Flash Flood Warning | MSO | 3 hr |
| Sep 9, 2:10 PM MDT | Red Flag Warning | PIH | 7 hr |
| Sep 9, 2:10 PM MDT | Red Flag Warning | PIH | 31 hr |
| Sep 10, 1:12 PM MDT | Winter Weather Advisory | MSO | 65 hr |
| Sep 10, 1:24 PM MDT | Red Flag Warning | PIH | 31 hr |
| Sep 11, 1:29 PM MDT | Flood Watch | MSO | 8 hr |
| Sep 11, 1:57 PM MDT | Flash Flood Warning | MSO | 109 min |
| Sep 11, 2:26 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 11, 6:37 PM MDT | Special Weather Statement | MSO | 53 min |
| Sep 28, 1:44 PM MDT | Freeze Watch | MSO | 21 hr |
| Sep 29, 10:52 AM MDT | Freeze Warning | MSO | 46 hr |
| Oct 2, 12:48 PM MDT | High Wind Watch | MSO | 24 hr |
| Oct 2, 8:50 PM MDT | Fire Weather Watch | PIH | 16 hr |
| Oct 3, 12:59 PM MDT | Red Flag Warning | PIH | 37 hr |
| Oct 3, 1:00 PM MDT | High Wind Warning | MSO | 37 hr |
| Oct 8, 2:07 PM MDT | Red Flag Warning | PIH | 31 hr |
| Oct 16, 9:05 AM MDT | Winter Weather Advisory | MSO | 36 hr |
| Nov 15, 1:38 AM MST | Winter Weather Advisory | MSO | 26 hr |
| Nov 15, 1:01 PM MST | Winter Weather Advisory | MSO | 70 hr |
| Nov 23, 11:10 AM MST | Winter Weather Advisory | MSO | 23 hr |
| Nov 25, 11:40 AM MST | Winter Weather Advisory | MSO | 32 hr |
| Dec 13, 12:43 PM MST | Winter Weather Advisory | MSO | 46 hr |
| Dec 17, 10:55 AM MST | Wind Advisory | MSO | 31 hr |
| Dec 26, 2:40 PM MST | Winter Weather Advisory | MSO | 23 hr |
| Dec 28, 2:19 PM MST | Winter Weather Advisory | MSO | 63 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 | 2 |
| Mesoscale Discussion | 13 |
| Special Weather Statement | 15 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 27 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 2 |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 25 |
| Fire Weather Watch | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.