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

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings5180%633%41 min
Flash flood warnings110%978%50 min

Each office's whole area, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Missoula, MT: severe thunderstorm warnings381171%3067%17 min
NWS Missoula, MT: flash flood warnings110%978%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.

IssuedProductOfficeLasted
Jan 3, 3:41 AM MSTWind AdvisoryMSO42 hr
Jan 7, 4:05 AM MSTWinter Storm WatchMSO26 hr
Jan 9, 2:00 PM MSTSnow AdvisoryMSO55 hr
Jan 18, 2:19 PM MSTSnow AdvisoryMSO51 hr
Jan 20, 4:48 AM MSTWind Chill AdvisoryMSO29 hr
Jan 22, 12:48 PM MSTRiver Flood WatchMSO3 days
Jan 26, 8:37 PM MSTWinter Storm WarningMSO36 hr
Jan 27, 4:10 AM MSTSnow AdvisoryMSO29 hr
Jan 30, 2:03 PM MSTHeavy Snow WarningMSO38 hr
Jan 30, 2:10 PM MSTWind AdvisoryMSO27 hr
Jan 31, 3:58 AM MSTBlowing Snow AdvisoryMSO19 hr
Feb 1, 3:45 AM MSTSnow and Blowing Snow AdvisoryMSO116 min
Feb 1, 3:45 AM MSTSnow AdvisoryMSO24 hr
Feb 2, 2:35 PM MSTSnow AdvisoryMSO38 hr
Feb 6, 10:54 AM MSTSnow AdvisoryMSO17 hr
Feb 6, 10:54 AM MSTWinter Storm WarningMSO52 hr
Feb 6, 2:30 PM MSTSnow and Blowing Snow AdvisoryMSO56 hr
Feb 8, 9:47 AM MSTHeavy Snow WarningMSO18 hr
Feb 12, 3:38 AM MSTWinter Weather AdvisoryMSO27 hr
Mar 19, 2:14 PM MDTSnow AdvisoryMSO16 hr
Mar 30, 3:42 AM MDTSnow AdvisoryMSO32 hr
Apr 17, 2:22 PM MDTWinter Storm WatchMSO24 hr
Apr 18, 4:38 AM MDTWind AdvisoryMSO16 hr
Apr 18, 2:49 PM MDTSnow AdvisoryMSO37 hr
Apr 18, 2:49 PM MDTWinter Storm WarningMSO51 hr
Apr 29, 10:54 AM MDTSnow AdvisoryMSO21 hr
May 21, 12:16 AM MDTSevere Thunderstorm WarningMSO50 min
May 22, 9:37 AM MDTSnow AdvisoryMSO23 hr
May 28, 12:11 PM MDTFlash Flood WatchMSO8 hr
Jun 2, 1:19 PM MDTMesoscale DiscussionSPC86 min
Jun 11, 12:09 PM MDTSnow AdvisoryMSO8 hr
Jun 17, 2:09 PM MDTMesoscale DiscussionSPC66 min
Jul 1, 1:26 PM MDTMesoscale DiscussionSPC2 hr
Jul 4, 1:45 PM MDTMesoscale DiscussionSPC60 min
Jul 4, 2:04 PM MDTSevere Thunderstorm WatchSPC8 hr
Jul 4, 5:45 PM MDTMesoscale DiscussionSPC60 min
Jul 22, 11:28 AM MDTFlash Flood WatchMSO6 hr
Jul 22, 12:16 PM MDTMesoscale DiscussionSPC89 min
Jul 22, 1:00 PM MDTSevere Thunderstorm WatchSPC8 hr
Jul 22, 2:02 PM MDTFlash Flood WarningMSO74 min
Jul 22, 2:11 PM MDTSevere Thunderstorm WarningMSO64 min
Jul 22, 3:43 PM MDTSevere Thunderstorm WarningMSO14 min
Aug 1, 3:10 AM MDTFire Weather WatchPIH24 hr
Aug 2, 3:25 AM MDTRed Flag WarningPIH18 hr
Aug 5, 2:31 PM MDTFire Weather WatchPIH38 hr
Aug 7, 4:55 AM MDTRed Flag WarningPIH19 hr
Aug 8, 3:39 AM MDTRed Flag WarningPIH20 hr
Aug 8, 4:46 AM MDTFlash Flood WatchMSO16 hr
Aug 8, 5:15 PM MDTAreal Flood AdvisoryMSO94 min
Aug 9, 2:44 AM MDTRed Flag WarningPIH18 hr
Aug 9, 11:46 AM MDTMesoscale DiscussionSPC59 min
Aug 9, 12:16 PM MDTSevere Thunderstorm WatchSPC8 hr
Aug 9, 12:23 PM MDTSevere Thunderstorm WarningMSO52 min
Aug 9, 2:06 PM MDTSevere Thunderstorm WarningMSO39 min
Aug 9, 5:50 PM MDTMesoscale DiscussionSPC55 min
Aug 19, 2:25 AM MDTRed Flag WarningPIH17 hr
Aug 21, 11:51 AM MDTWind AdvisoryMSO9 hr
Aug 24, 2:56 PM MDTRed Flag WarningPIH30 hr
Aug 24, 9:12 PM MDTWind AdvisoryMSO25 hr
Aug 26, 2:13 PM MDTRed Flag WarningPIH31 hr
Aug 29, 3:04 AM MDTFire Weather WatchPIH11 hr
Aug 29, 2:10 PM MDTRed Flag WarningPIH31 hr
Sep 8, 2:00 PM MDTFire Weather WatchPIH19 hr
Sep 9, 8:32 AM MDTRed Flag WarningPIH12 hr
Sep 9, 2:56 PM MDTFire Weather WatchPIH12 hr
Sep 10, 3:17 AM MDTRed Flag WarningPIH17 hr
Sep 19, 2:14 PM MDTRed Flag WarningPIH30 hr
Sep 24, 2:01 PM MDTFire Weather WatchPIH14 hr
Sep 25, 3:50 AM MDTRed Flag WarningPIH16 hr
Oct 7, 12:53 PM MDTWind AdvisoryMSO7 hr
Oct 9, 3:45 AM MDTWinter Weather AdvisoryMSO10 hr
Oct 9, 2:12 PM MDTWinter Storm WarningMSO25 hr
Oct 9, 2:12 PM MDTWinter Weather AdvisoryMSO38 hr
Oct 11, 3:44 AM MDTWinter Storm WarningMSO38 hr
Dec 11, 3:41 AM MSTWinter Storm WatchMSO49 hr
Dec 12, 11:57 AM MSTWinter Weather AdvisoryMSO40 hr
Dec 14, 7:28 AM MSTWind Chill AdvisoryMSO5 hr
Dec 20, 2:35 PM MSTWinter Weather AdvisoryMSO50 hr
Dec 24, 3:49 AM MSTWinter Weather AdvisoryMSO37 hr
Dec 28, 7:45 PM MSTWinter Storm WarningMSO25 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.