Alert archive / Idaho / Ada County

Weather alerts in Ada County, Idaho, 2022

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

Ada County and its neighbors

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

Alerts
74
Warnings
14
Watches
2
Advisories
34
Busiest month
August16 alerts
Busiest day
August 12, 20229 alerts

Over time

By month

Warning verification

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

Ada County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings11645%250%40 min
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 13, 12:37 PM MSTAir Stagnation AdvisoryBOI7 days
Jan 20, 4:25 AM MSTWinter Weather AdvisoryBOI16 hr
Feb 21, 1:21 PM MSTWinter Weather AdvisoryBOI37 hr
Mar 19, 2:56 AM MDTWind AdvisoryBOI39 hr
Apr 3, 3:33 AM MDTWind AdvisoryBOI62 hr
Apr 4, 5:37 PM MDTDust Storm AdvisoryBOI83 min
Apr 6, 2:33 PM MDTWind AdvisoryBOI61 hr
Apr 11, 3:31 AM MDTWind AdvisoryBOI38 hr
Apr 21, 2:13 PM MDTWind AdvisoryBOI31 hr
Apr 21, 4:46 PM MDTSpecial Weather StatementBOI29 min
Apr 21, 5:14 PM MDTSpecial Weather StatementBOI31 min
May 2, 3:03 AM MDTWind AdvisoryBOI33 hr
May 2, 1:42 PM MDTSpecial Weather StatementBOI33 min
May 2, 2:12 PM MDTSpecial Weather StatementBOI48 min
May 7, 12:16 AM MDTSpecial Weather StatementBOI44 min
May 7, 5:44 PM MDTSpecial Weather StatementBOI31 min
May 9, 2:57 AM MDTFreeze WarningBOI30 hr
May 18, 1:30 PM MDTWind AdvisoryBOI32 hr
May 28, 8:09 PM MDTSpecial Weather StatementBOI36 min
May 28, 9:01 PM MDTSpecial Weather StatementBOI59 min
Jun 5, 12:57 PM MDTMesoscale DiscussionSPC2 hr
Jun 5, 3:37 PM MDTAreal Flood AdvisoryBOI70 min
Jun 5, 3:46 PM MDTSpecial Weather StatementBOI44 min
Jun 5, 3:50 PM MDTSpecial Weather StatementBOI40 min
Jun 5, 3:54 PM MDTAreal Flood AdvisoryBOI100 min
Jun 5, 4:00 PM MDTSevere Thunderstorm WarningBOI45 min
Jun 5, 4:47 PM MDTSevere Thunderstorm WarningBOI43 min
Jun 5, 7:02 PM MDTSpecial Weather StatementBOI28 min
Jun 5, 10:47 PM MDTSevere Thunderstorm WarningBOI43 min
Jun 12, 1:08 PM MDTSpecial Weather StatementBOI37 min
Jun 12, 1:38 PM MDTSpecial Weather StatementBOI37 min
Jul 3, 1:07 AM MDTSpecial Weather StatementBOI23 min
Jul 12, 4:15 AM MDTHeat AdvisoryBOI20 hr
Jul 26, 1:30 PM MDTHeat AdvisoryBOI6 days
Jul 28, 2:11 PM MDTExcessive Heat WarningBOI4 days
Aug 10, 6:25 PM MDTSpecial Weather StatementBOI35 min
Aug 10, 7:06 PM MDTAreal Flood AdvisoryBOI114 min
Aug 11, 2:23 PM MDTMesoscale DiscussionSPC3 hr
Aug 11, 4:53 PM MDTSpecial Weather StatementBOI52 min
Aug 11, 5:12 PM MDTSevere Thunderstorm WarningBOI48 min
Aug 12, 1:13 PM MDTMesoscale DiscussionSPC92 min
Aug 12, 1:55 PM MDTSevere Thunderstorm WatchSPC6 hr
Aug 12, 2:39 PM MDTSevere Thunderstorm WarningBOI36 min
Aug 12, 3:46 PM MDTSevere Thunderstorm WarningBOI29 min
Aug 12, 3:46 PM MDTSevere Thunderstorm WarningBOI29 min
Aug 12, 4:12 PM MDTSevere Thunderstorm WarningBOI33 min
Aug 12, 4:13 PM MDTSevere Thunderstorm WarningBOI30 min
Aug 12, 4:41 PM MDTMesoscale DiscussionSPC94 min
Aug 12, 4:59 PM MDTSpecial Weather StatementBOI16 min
Aug 16, 3:17 AM MDTHeat AdvisoryBOI42 hr
Aug 29, 2:14 PM MDTHeat AdvisoryBOI9 days
Sep 4, 3:14 AM MDTHeat AdvisoryBOI4 days
Sep 7, 5:56 PM MDTMesoscale DiscussionSPC2 hr
Sep 7, 6:08 PM MDTSevere Thunderstorm Warning Considerable damage threatBOI37 min
Sep 7, 6:41 PM MDTSevere Thunderstorm Warning Considerable damage threatBOI64 min
Sep 7, 7:09 PM MDTDust Storm AdvisoryBOI36 min
Sep 7, 7:46 PM MDTDust Storm AdvisoryBOI59 min
Sep 21, 12:20 PM MDTMesoscale DiscussionSPC85 min
Sep 21, 12:39 PM MDTSpecial Weather StatementBOI36 min
Oct 22, 2:51 AM MDTFreeze WatchBOI12 hr
Oct 22, 2:25 PM MDTFreeze WarningBOI44 hr
Nov 3, 6:40 AM MDTDense Fog AdvisoryBOI3 hr
Nov 8, 2:42 AM MSTWinter Weather AdvisoryBOI38 hr
Nov 14, 10:42 AM MSTAir Stagnation AdvisoryBOI12 days
Nov 17, 3:04 AM MSTDense Fog AdvisoryBOI7 hr
Dec 3, 3:12 AM MSTWinter Weather AdvisoryBOI38 hr
Dec 5, 1:07 AM MSTDense Fog AdvisoryBOI34 hr
Dec 7, 1:45 AM MSTDense Fog AdvisoryBOI8 hr
Dec 7, 2:01 PM MSTWinter Weather AdvisoryBOI46 hr
Dec 9, 9:57 AM MSTWinter Weather AdvisoryBOI3 min
Dec 11, 2:09 PM MSTWinter Weather AdvisoryBOI39 hr
Dec 24, 3:29 AM MSTWinter Weather AdvisoryBOI20 hr
Dec 24, 7:21 PM MSTWinter Weather AdvisoryBOI4 hr
Dec 26, 8:00 PM MSTDense Fog AdvisoryBOI8 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.