Alert archive / Idaho / Lemhi County
Weather alerts in Lemhi County, Idaho, 2015
54 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 54
- Warnings
- 6
- Watches
- 8
- Advisories
- 32
- Busiest month
- August10 alerts
- Busiest day
- August 14, 20155 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, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 0 | 100% | 1 | 0% | |
| 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 3, 2:04 PM MST | Winter Weather Advisory | MSO | 23 hr |
| Jan 4, 12:54 PM MST | Winter Weather Advisory | MSO | 28 hr |
| Jan 27, 8:55 PM MST | Winter Weather Advisory | MSO | 11 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 7, 9:14 AM MST | Areal Flood Advisory | MSO | 24 hr |
| Feb 8, 9:22 PM MST | Winter Weather Advisory | MSO | 37 hr |
| Feb 19, 10:45 AM MST | Winter Weather Advisory | MSO | 24 hr |
| Feb 27, 11:49 AM MST | Winter Weather Advisory | MSO | 18 hr |
| Mar 1, 5:28 AM MST | Winter Weather Advisory | MSO | 53 hr |
| Mar 31, 3:39 AM MDT | Wind Advisory | MSO | 18 hr |
| Mar 31, 9:22 AM MDT | Winter Weather Advisory | MSO | 24 hr |
| Apr 4, 1:54 PM MDT | Winter Weather Advisory | MSO | 55 hr |
| Apr 13, 2:32 PM MDT | Winter Weather Advisory | MSO | 42 hr |
| Apr 25, 2:14 PM MDT | Winter Weather Advisory | MSO | 20 hr |
| May 12, 12:53 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 12:03 PM MDT | Areal Flood Advisory | MSO | 8 hr |
| May 31, 4:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 1, 2:19 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 1, 2:36 PM MDT | Severe Thunderstorm Warning | MSO | 24 min |
| Jun 29, 1:54 PM MDT | Mesoscale Discussion | SPC | 96 min |
| Jun 30, 5:22 AM MDT | Special Weather Statement | MSO | 38 min |
| Jul 11, 4:33 PM MDT | Special Weather Statement | MSO | 42 min |
| Aug 10, 3:35 PM MDT | Special Weather Statement | MSO | 55 min |
| Aug 14, 1:35 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 1:51 PM MDT | Flash Flood Watch | MSO | 6 hr |
| Aug 14, 2:23 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 14, 2:59 PM MDT | Special Weather Statement | MSO | 46 min |
| Aug 14, 3:00 PM MDT | Areal Flood Advisory | MSO | 2 hr |
| Aug 19, 6:02 PM MDT | Fire Weather Watch | PIH | 18 hr |
| Aug 20, 12:30 PM MDT | Red Flag Warning | PIH | 33 hr |
| Aug 28, 3:35 AM MDT | Fire Weather Watch | PIH | 11 hr |
| Aug 28, 2:18 PM MDT | Red Flag Warning | PIH | 36 hr |
| Sep 1, 2:14 PM MDT | Red Flag Warning | PIH | 31 hr |
| Sep 4, 11:09 AM MDT | Winter Weather Advisory | MSO | 46 hr |
| Oct 25, 2:07 PM MDT | Winter Weather Advisory | MSO | 45 hr |
| Nov 2, 4:42 AM MST | Winter Storm Watch | MSO | 10 hr |
| Nov 2, 4:42 AM MST | Winter Weather Advisory | MSO | 51 hr |
| Nov 5, 3:46 AM MST | Winter Weather Advisory | MSO | 28 hr |
| Nov 8, 2:36 PM MST | Winter Weather Advisory | MSO | 44 hr |
| Nov 15, 12:58 PM MST | Winter Weather Advisory | MSO | 20 hr |
| Nov 16, 11:31 AM MST | Winter Storm Warning | MSO | 47 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 25, 4:51 AM MST | Winter Weather Advisory | MSO | 4 hr |
| Nov 25, 12:17 PM MST | Winter Weather Advisory | MSO | 8 hr |
| Dec 4, 6:41 PM MST | Winter Weather Advisory | MSO | 14 hr |
| Dec 7, 4:40 AM MST | Winter Weather Advisory | MSO | 18 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 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, 2:47 PM MST | Winter Weather Advisory | MSO | 53 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 | 4 |
| Special Weather Statement | 4 |
| Flooding | |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 28 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 2 |
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.