Alert archive / Idaho / Lemhi County
Weather alerts in Lemhi County, Idaho, 2008
80 weather alerts in 2008, 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 2008. Tap one for its archive.
- Alerts
- 80
- Warnings
- 26
- Watches
- 16
- Advisories
- 30
- Busiest month
- August20 alerts
- Busiest day
- July 22, 20086 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, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 5 | 1 | 80% | 6 | 33% | 41 min |
| Flash flood warnings | 1 | 1 | 0% | 9 | 78% | 50 min |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Missoula, MT: severe thunderstorm warnings | 38 | 11 | 71% | 30 | 67% | 17 min |
| NWS Missoula, MT: flash flood warnings | 1 | 1 | 0% | 9 | 78% | 50 min |
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, 3:41 AM MST | Wind Advisory | MSO | 42 hr |
| Jan 7, 4:05 AM MST | Winter Storm Watch | MSO | 26 hr |
| Jan 9, 2:00 PM MST | Snow Advisory | MSO | 55 hr |
| Jan 18, 2:19 PM MST | Snow Advisory | MSO | 51 hr |
| Jan 20, 4:48 AM MST | Wind Chill Advisory | MSO | 29 hr |
| Jan 22, 12:48 PM MST | River Flood Watch | MSO | 3 days |
| Jan 26, 8:37 PM MST | Winter Storm Warning | MSO | 36 hr |
| Jan 27, 4:10 AM MST | Snow Advisory | MSO | 29 hr |
| Jan 30, 2:03 PM MST | Heavy Snow Warning | MSO | 38 hr |
| Jan 30, 2:10 PM MST | Wind Advisory | MSO | 27 hr |
| Jan 31, 3:58 AM MST | Blowing Snow Advisory | MSO | 19 hr |
| Feb 1, 3:45 AM MST | Snow and Blowing Snow Advisory | MSO | 116 min |
| Feb 1, 3:45 AM MST | Snow Advisory | MSO | 24 hr |
| Feb 2, 2:35 PM MST | Snow Advisory | MSO | 38 hr |
| Feb 6, 10:54 AM MST | Snow Advisory | MSO | 17 hr |
| Feb 6, 10:54 AM MST | Winter Storm Warning | MSO | 52 hr |
| Feb 6, 2:30 PM MST | Snow and Blowing Snow Advisory | MSO | 56 hr |
| Feb 8, 9:47 AM MST | Heavy Snow Warning | MSO | 18 hr |
| Feb 12, 3:38 AM MST | Winter Weather Advisory | MSO | 27 hr |
| Mar 19, 2:14 PM MDT | Snow Advisory | MSO | 16 hr |
| Mar 30, 3:42 AM MDT | Snow Advisory | MSO | 32 hr |
| Apr 17, 2:22 PM MDT | Winter Storm Watch | MSO | 24 hr |
| Apr 18, 4:38 AM MDT | Wind Advisory | MSO | 16 hr |
| Apr 18, 2:49 PM MDT | Snow Advisory | MSO | 37 hr |
| Apr 18, 2:49 PM MDT | Winter Storm Warning | MSO | 51 hr |
| Apr 29, 10:54 AM MDT | Snow Advisory | MSO | 21 hr |
| May 21, 12:16 AM MDT | Severe Thunderstorm Warning | MSO | 50 min |
| May 22, 9:37 AM MDT | Snow Advisory | MSO | 23 hr |
| May 28, 12:11 PM MDT | Flash Flood Watch | MSO | 8 hr |
| Jun 2, 1:19 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jun 11, 12:09 PM MDT | Snow Advisory | MSO | 8 hr |
| Jun 17, 2:09 PM MDT | Mesoscale Discussion | SPC | 66 min |
| Jul 1, 1:26 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 1:45 PM MDT | Mesoscale Discussion | SPC | 60 min |
| Jul 4, 2:04 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 4, 5:45 PM MDT | Mesoscale Discussion | SPC | 60 min |
| Jul 22, 11:28 AM MDT | Flash Flood Watch | MSO | 6 hr |
| Jul 22, 12:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jul 22, 1:00 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 22, 2:02 PM MDT | Flash Flood Warning | MSO | 74 min |
| Jul 22, 2:11 PM MDT | Severe Thunderstorm Warning | MSO | 64 min |
| Jul 22, 3:43 PM MDT | Severe Thunderstorm Warning | MSO | 14 min |
| Aug 1, 3:10 AM MDT | Fire Weather Watch | PIH | 24 hr |
| Aug 2, 3:25 AM MDT | Red Flag Warning | PIH | 18 hr |
| Aug 5, 2:31 PM MDT | Fire Weather Watch | PIH | 38 hr |
| Aug 7, 4:55 AM MDT | Red Flag Warning | PIH | 19 hr |
| Aug 8, 3:39 AM MDT | Red Flag Warning | PIH | 20 hr |
| Aug 8, 4:46 AM MDT | Flash Flood Watch | MSO | 16 hr |
| Aug 8, 5:15 PM MDT | Areal Flood Advisory | MSO | 94 min |
| Aug 9, 2:44 AM MDT | Red Flag Warning | PIH | 18 hr |
| Aug 9, 11:46 AM MDT | Mesoscale Discussion | SPC | 59 min |
| Aug 9, 12:16 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 9, 12:23 PM MDT | Severe Thunderstorm Warning | MSO | 52 min |
| Aug 9, 2:06 PM MDT | Severe Thunderstorm Warning | MSO | 39 min |
| Aug 9, 5:50 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Aug 19, 2:25 AM MDT | Red Flag Warning | PIH | 17 hr |
| Aug 21, 11:51 AM MDT | Wind Advisory | MSO | 9 hr |
| Aug 24, 2:56 PM MDT | Red Flag Warning | PIH | 30 hr |
| Aug 24, 9:12 PM MDT | Wind Advisory | MSO | 25 hr |
| Aug 26, 2:13 PM MDT | Red Flag Warning | PIH | 31 hr |
| Aug 29, 3:04 AM MDT | Fire Weather Watch | PIH | 11 hr |
| Aug 29, 2:10 PM MDT | Red Flag Warning | PIH | 31 hr |
| Sep 8, 2:00 PM MDT | Fire Weather Watch | PIH | 19 hr |
| Sep 9, 8:32 AM MDT | Red Flag Warning | PIH | 12 hr |
| Sep 9, 2:56 PM MDT | Fire Weather Watch | PIH | 12 hr |
| Sep 10, 3:17 AM MDT | Red Flag Warning | PIH | 17 hr |
| Sep 19, 2:14 PM MDT | Red Flag Warning | PIH | 30 hr |
| Sep 24, 2:01 PM MDT | Fire Weather Watch | PIH | 14 hr |
| Sep 25, 3:50 AM MDT | Red Flag Warning | PIH | 16 hr |
| Oct 7, 12:53 PM MDT | Wind Advisory | MSO | 7 hr |
| Oct 9, 3:45 AM MDT | Winter Weather Advisory | MSO | 10 hr |
| Oct 9, 2:12 PM MDT | Winter Storm Warning | MSO | 25 hr |
| Oct 9, 2:12 PM MDT | Winter Weather Advisory | MSO | 38 hr |
| Oct 11, 3:44 AM MDT | Winter Storm Warning | MSO | 38 hr |
| Dec 11, 3:41 AM MST | Winter Storm Watch | MSO | 49 hr |
| Dec 12, 11:57 AM MST | Winter Weather Advisory | MSO | 40 hr |
| Dec 14, 7:28 AM MST | Wind Chill Advisory | MSO | 5 hr |
| Dec 20, 2:35 PM MST | Winter Weather Advisory | MSO | 50 hr |
| Dec 24, 3:49 AM MST | Winter Weather Advisory | MSO | 37 hr |
| Dec 28, 7:45 PM MST | Winter Storm Warning | MSO | 25 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20072009
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.