Alert archive / Idaho / Jerome County

Weather alerts in Jerome County, Idaho, 2022

69 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Jerome County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts
69
Warnings
17
Watches
9
Advisories
31
Busiest month
September15 alerts
Busiest day
September 21, 20227 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Jerome County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings4250%0
Flash flood warnings00

Each office's whole area, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Boise, ID: tornado warnings010%
NWS Boise, ID: severe thunderstorm warnings611575%4063%23 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 1, 2:17 AM MSTWinter Storm WatchBOI37 hr
Jan 2, 2:56 PM MSTWinter Weather AdvisoryBOI68 hr
Jan 13, 12:37 PM MSTAir Stagnation AdvisoryBOI7 days
Jan 16, 8:52 PM MSTDense Fog AdvisoryBOI12 hr
Jan 17, 8:24 PM MSTDense Fog AdvisoryBOI17 hr
Jan 18, 2:22 PM MSTDense Fog AdvisoryBOI19 hr
Jan 20, 4:25 AM MSTWinter Weather AdvisoryBOI16 hr
Jan 21, 3:18 AM MSTDense Fog AdvisoryBOI10 hr
Mar 7, 1:39 PM MSTWinter Weather AdvisoryBOI47 hr
Mar 19, 2:56 AM MDTWind AdvisoryBOI39 hr
Mar 19, 8:47 PM MDTHigh Wind WarningBOI21 hr
Apr 3, 3:33 AM MDTWind AdvisoryBOI62 hr
Apr 6, 2:33 PM MDTWind AdvisoryBOI61 hr
Apr 11, 3:31 AM MDTWind AdvisoryBOI38 hr
Apr 11, 2:33 PM MDTSpecial Weather StatementBOI57 min
Apr 16, 3:08 AM MDTWind AdvisoryBOI18 hr
Apr 21, 2:13 PM MDTWind AdvisoryBOI31 hr
May 2, 3:03 AM MDTWind AdvisoryBOI33 hr
May 2, 2:41 PM MDTMesoscale DiscussionSPC3 hr
May 2, 3:02 PM MDTSpecial Weather StatementBOI43 min
May 2, 3:45 PM MDTSpecial Weather StatementBOI30 min
May 9, 2:57 AM MDTFreeze WarningBOI30 hr
May 18, 1:30 PM MDTWind AdvisoryBOI32 hr
May 19, 3:11 AM MDTFreeze WarningBOI30 hr
May 19, 4:13 PM MDTHigh Wind WarningBOI5 hr
Jun 5, 5:30 PM MDTSevere Thunderstorm WarningBOI45 min
Jun 5, 6:14 PM MDTSevere Thunderstorm WarningBOI46 min
Jun 5, 6:20 PM MDTAreal Flood AdvisoryBOI115 min
Jun 5, 6:47 PM MDTSevere Thunderstorm WarningBOI28 min
Jun 17, 3:07 AM MDTWind AdvisoryBOI15 hr
Jun 19, 11:30 AM MDTWind AdvisoryBOI7 hr
Jul 2, 2:41 PM MDTSpecial Weather StatementBOI49 min
Jul 12, 4:15 AM MDTHeat AdvisoryBOI20 hr
Jul 13, 1:11 PM MDTSpecial Weather StatementBOI34 min
Jul 17, 3:02 AM MDTFire Weather WatchPIH12 hr
Jul 17, 2:34 PM MDTRed Flag WarningPIH30 hr
Jul 20, 2:19 PM MDTFire Weather WatchPIH23 hr
Jul 21, 1:02 PM MDTRed Flag WarningPIH32 hr
Jul 21, 2:15 PM MDTRed Flag WarningBOI31 hr
Jul 28, 2:11 PM MDTHeat AdvisoryBOI4 days
Aug 12, 1:55 PM MDTSevere Thunderstorm WatchSPC6 hr
Aug 16, 3:17 AM MDTHeat AdvisoryBOI42 hr
Aug 26, 1:46 PM MDTRed Flag WarningPIH30 hr
Aug 27, 1:24 PM MDTRed Flag WarningPIH31 hr
Aug 29, 2:14 PM MDTHeat AdvisoryBOI9 days
Sep 2, 1:18 PM MDTFire Weather WatchPIH23 hr
Sep 3, 11:54 AM MDTRed Flag WarningPIH33 hr
Sep 6, 2:01 PM MDTFire Weather WatchPIH23 hr
Sep 6, 2:21 PM MDTFire Weather WatchBOI24 hr
Sep 7, 12:44 PM MDTRed Flag WarningPIH32 hr
Sep 7, 2:36 PM MDTRed Flag WarningBOI30 hr
Sep 7, 7:46 PM MDTDust Storm AdvisoryBOI59 min
Sep 21, 12:20 PM MDTMesoscale DiscussionSPC85 min
Sep 21, 12:22 PM MDTSevere Thunderstorm WarningBOI23 min
Sep 21, 12:40 PM MDTSevere Thunderstorm WatchSPC8 hr
Sep 21, 12:46 PM MDTSpecial Weather StatementBOI29 min
Sep 21, 1:21 PM MDTSpecial Weather StatementBOI24 min
Sep 21, 2:19 PM MDTSpecial Weather StatementBOI26 min
Sep 21, 2:47 PM MDTMesoscale DiscussionSPC88 min
Sep 21, 8:24 PM MDTSpecial Weather StatementBOI36 min
Oct 22, 2:51 AM MDTFreeze WatchBOI12 hr
Oct 22, 2:25 PM MDTFreeze WarningBOI44 hr
Nov 3, 2:24 PM MDTWind AdvisoryBOI48 hr
Nov 14, 10:42 AM MSTAir Stagnation AdvisoryBOI12 days
Dec 3, 3:12 AM MSTWinter Weather AdvisoryBOI38 hr
Dec 5, 1:07 AM MSTDense Fog AdvisoryBOI34 hr
Dec 7, 2:01 PM MSTWinter Weather AdvisoryBOI46 hr
Dec 14, 12:32 PM MSTWinter Weather AdvisoryBOI16 hr
Dec 29, 3:02 AM MSTWinter Weather AdvisoryBOI33 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 archive20212023

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.