Alert archive / Idaho / Lemhi County

Weather alerts in Lemhi County, Idaho, 2013

109 weather alerts in 2013, 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 2013. Tap one for its archive.

Alerts
109
Warnings
35
Watches
19
Advisories
33
Busiest month
August32 alerts
Busiest day
September 5, 20136 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, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings2150%1050%17 min
Flash flood warnings60100%20%

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Missoula, MT: tornado warnings010%
NWS Missoula, MT: severe thunderstorm warnings351654%5159%17 min
NWS Missoula, MT: flash flood warnings80100%40%

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 6, 1:59 PM MSTWinter Weather AdvisoryMSO39 hr
Jan 9, 11:43 AM MSTWinter Weather AdvisoryMSO49 hr
Jan 14, 10:04 AM MSTFlood WatchMSO25 hr
Jan 20, 12:06 PM MSTFlood WatchMSO8 days
Jan 25, 2:17 PM MSTWinter Weather AdvisoryMSO45 hr
Jan 28, 3:25 AM MSTWinter Weather AdvisoryMSO62 hr
Feb 9, 1:19 PM MSTWinter Weather AdvisoryMSO22 hr
Feb 11, 1:32 PM MSTWinter Weather AdvisoryMSO45 hr
Feb 22, 4:10 AM MSTWinter Weather AdvisoryMSO40 hr
Feb 25, 8:47 AM MSTWinter Weather AdvisoryMSO19 hr
Mar 1, 11:06 AM MSTWinter Weather AdvisoryMSO46 hr
Mar 5, 2:07 PM MSTWinter Weather AdvisoryMSO21 hr
Mar 10, 2:35 PM MDTWinter Weather AdvisoryMSO21 hr
Mar 15, 2:15 PM MDTWinter Weather AdvisoryMSO4 days
Mar 20, 7:19 PM MDTSpecial Weather StatementMSO56 min
Apr 12, 10:18 AM MDTWind AdvisoryMSO35 hr
Apr 12, 10:33 AM MDTWinter Weather AdvisoryMSO25 hr
Apr 13, 2:11 PM MDTWinter Weather AdvisoryMSO22 hr
Apr 18, 2:30 PM MDTWinter Weather AdvisoryMSO18 hr
Apr 20, 3:31 AM MDTWinter Weather AdvisoryMSO53 hr
Apr 28, 10:21 AM MDTHigh Wind WarningMSO35 hr
Apr 28, 10:21 AM MDTWind AdvisoryMSO35 hr
May 13, 8:08 AM MDTWind AdvisoryMSO13 hr
May 17, 11:20 AM MDTWinter Weather AdvisoryMSO9 hr
May 23, 11:56 AM MDTWinter Weather AdvisoryMSO16 hr
Jun 10, 2:42 PM MDTSpecial Weather StatementMSO33 min
Jun 10, 2:53 PM MDTSevere Thunderstorm WarningMSO37 min
Jun 10, 6:20 PM MDTSpecial Weather StatementMSO40 min
Jun 10, 7:16 PM MDTSpecial Weather StatementMSO44 min
Jun 10, 7:20 PM MDTFlash Flood WarningMSO3 hr
Jun 10, 8:04 PM MDTSpecial Weather StatementMSO56 min
Jun 28, 1:26 PM MDTHeat AdvisoryMSO4 days
Jun 29, 1:34 PM MDTMesoscale DiscussionSPC2 hr
Jun 29, 6:59 PM MDTFlash Flood WarningMSO2 hr
Jun 29, 7:48 PM MDTFlash Flood WarningMSO87 min
Jul 1, 7:25 PM MDTSpecial Weather StatementMSO50 min
Jul 2, 4:19 PM MDTFlash Flood WarningMSO3 hr
Jul 2, 4:46 PM MDTSpecial Weather StatementMSO44 min
Jul 10, 2:42 PM MDTSpecial Weather StatementMSO48 min
Jul 10, 4:28 PM MDTSpecial Weather StatementMSO47 min
Jul 16, 9:39 AM MDTFlash Flood WatchMSO14 hr
Jul 17, 2:22 PM MDTMesoscale DiscussionSPC83 min
Jul 17, 2:31 PM MDTSpecial Weather StatementMSO29 min
Jul 17, 2:48 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 17, 3:17 PM MDTAreal Flood AdvisoryMSO58 min
Jul 25, 2:43 PM MDTFire Weather WatchPIH25 hr
Jul 26, 2:27 PM MDTRed Flag WarningPIH24 hr
Jul 29, 2:57 AM MDTRed Flag WarningPIH18 hr
Jul 29, 9:16 PM MDTRed Flag WarningPIH6 hr
Jul 30, 3:06 AM MDTRed Flag WarningPIH18 hr
Jul 31, 2:14 AM MDTRed Flag WarningPIH25 hr
Aug 1, 2:57 AM MDTRed Flag WarningPIH19 hr
Aug 1, 12:54 PM MDTMesoscale DiscussionSPC96 min
Aug 1, 1:05 PM MDTSpecial Weather StatementMSO55 min
Aug 1, 1:26 PM MDTSevere Thunderstorm WatchSPC10 hr
Aug 1, 1:55 PM MDTSevere Thunderstorm WarningMSO35 min
Aug 3, 6:35 PM MDTFire Weather WatchPIH8 hr
Aug 4, 2:23 AM MDTRed Flag WarningPIH19 hr
Aug 4, 2:07 PM MDTFire Weather WatchPIH14 hr
Aug 5, 4:15 AM MDTRed Flag WarningPIH18 hr
Aug 7, 2:07 PM MDTRed Flag WarningPIH31 hr
Aug 8, 3:14 AM MDTFire Weather WatchPIH25 hr
Aug 9, 4:07 AM MDTRed Flag WarningPIH18 hr
Aug 9, 2:17 PM MDTSpecial Weather StatementMSO43 min
Aug 9, 3:54 PM MDTFlash Flood WarningMSO96 min
Aug 10, 3:54 AM MDTFire Weather WatchPIH24 hr
Aug 10, 3:54 AM MDTRed Flag WarningPIH17 hr
Aug 11, 3:35 AM MDTRed Flag WarningPIH17 hr
Aug 12, 3:39 AM MDTRed Flag WarningPIH17 hr
Aug 12, 2:23 PM MDTRed Flag WarningPIH30 hr
Aug 13, 8:50 PM MDTFire Weather WatchPIH18 hr
Aug 14, 2:16 PM MDTRed Flag WarningPIH3 days
Aug 18, 3:35 AM MDTRed Flag WarningPIH16 hr
Aug 18, 8:08 PM MDTFire Weather WatchPIH25 hr
Aug 19, 3:58 AM MDTRed Flag WarningPIH17 hr
Aug 19, 9:13 PM MDTRed Flag WarningPIH3 days
Aug 23, 3:47 AM MDTRed Flag WarningPIH18 hr
Aug 24, 3:19 AM MDTRed Flag WarningPIH19 hr
Aug 24, 2:09 PM MDTMesoscale DiscussionSPC66 min
Aug 24, 3:47 PM MDTSpecial Weather StatementMSO43 min
Aug 25, 3:34 AM MDTRed Flag WarningPIH19 hr
Aug 26, 3:01 AM MDTFire Weather WatchPIH11 hr
Aug 26, 2:14 PM MDTRed Flag WarningPIH55 hr
Sep 2, 2:34 PM MDTFlash Flood WatchMSO30 hr
Sep 4, 9:55 PM MDTFlash Flood WarningMSO2 hr
Sep 5, 9:42 AM MDTFlash Flood WatchMSO11 hr
Sep 5, 2:31 PM MDTMesoscale DiscussionSPC119 min
Sep 5, 3:56 PM MDTSevere Thunderstorm WatchSPC7 hr
Sep 5, 5:34 PM MDTSpecial Weather StatementMSO41 min
Sep 5, 5:58 PM MDTAreal Flood AdvisoryMSO2 hr
Sep 5, 6:34 PM MDTMesoscale DiscussionSPC116 min
Sep 5, 10:44 PM MDTMesoscale DiscussionSPC2 hr
Sep 23, 12:05 PM MDTWinter Storm WatchMSO24 hr
Sep 24, 11:50 AM MDTWinter Storm WarningMSO48 hr
Sep 24, 5:27 PM MDTSpecial Weather StatementMSO48 min
Sep 27, 2:19 PM MDTHigh Wind WatchMSO24 hr
Sep 28, 2:27 PM MDTHigh Wind WarningMSO21 hr
Sep 29, 1:54 PM MDTWinter Weather AdvisoryMSO21 hr
Oct 2, 10:59 AM MDTWinter Weather AdvisoryMSO33 hr
Oct 26, 1:54 PM MDTWinter Storm WarningMSO67 hr
Oct 27, 4:07 AM MDTWinter Weather AdvisoryMSO38 hr
Nov 14, 3:09 PM MSTWinter Weather AdvisoryMSO4 days
Nov 19, 9:40 AM MSTWinter Weather AdvisoryMSO17 hr
Nov 29, 2:38 PM MSTWinter Storm WatchMSO48 hr
Nov 30, 3:03 PM MSTWinter Storm WarningMSO68 hr
Dec 3, 11:13 AM MSTWind Chill AdvisoryMSO24 hr
Dec 17, 12:24 PM MSTWinter Weather AdvisoryMSO47 hr
Dec 19, 10:59 AM MSTWinter Weather AdvisoryMSO48 hr
Dec 30, 1:51 PM MSTWinter Weather AdvisoryMSO33 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 archive20122014

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.