Alert archive / Idaho / Washington County

Weather alerts in Washington County, Idaho, 2013

69 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Washington County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts
69
Warnings
13
Watches
8
Advisories
37
Busiest month
January18 alerts
Busiest day
September 5, 20139 alerts

Over time

By month

Warning verification

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

Washington County, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings330%0
Flash flood warnings110%0

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Boise, ID: tornado warnings020%
NWS Boise, ID: severe thunderstorm warnings331167%3358%24 min
NWS Boise, ID: flash flood warnings17476%1362%30 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 7, 12:46 PM MSTWinter Weather AdvisoryBOI7 hr
Jan 8, 3:25 PM MSTWinter Weather AdvisoryBOI50 hr
Jan 16, 11:02 PM MSTDense Fog AdvisoryBOI12 hr
Jan 17, 4:49 PM MSTDense Fog AdvisoryBOI18 hr
Jan 18, 2:40 PM MSTDense Fog AdvisoryBOI20 hr
Jan 19, 2:35 PM MSTDense Fog AdvisoryBOI20 hr
Jan 20, 10:39 AM MSTDense Fog AdvisoryBOI20 hr
Jan 21, 2:19 PM MSTDense Fog AdvisoryBOI21 hr
Jan 23, 1:02 PM MSTWinter Weather AdvisoryBOI22 hr
Jan 24, 2:53 PM MSTWinter Weather AdvisoryBOI33 hr
Jan 24, 2:57 PM MSTDense Fog AdvisoryBOI20 hr
Jan 26, 12:27 AM MSTDense Fog AdvisoryBOI13 hr
Jan 26, 1:13 PM MSTDense Fog AdvisoryBOI4 hr
Jan 27, 1:07 AM MSTDense Fog AdvisoryBOI9 hr
Jan 27, 1:57 PM MSTWinter Storm WarningBOI51 hr
Jan 27, 1:57 PM MSTWinter Weather AdvisoryBOI24 hr
Jan 27, 2:14 PM MSTWind AdvisoryBOI23 hr
Jan 28, 1:30 PM MSTWinter Weather AdvisoryBOI28 hr
Feb 1, 6:41 AM MSTDense Fog AdvisoryBOI30 hr
Feb 2, 2:36 PM MSTDense Fog AdvisoryBOI20 hr
Feb 6, 3:38 AM MSTDense Fog AdvisoryBOI8 hr
Feb 21, 12:10 PM MSTWinter Storm WatchBOI16 hr
Feb 21, 1:47 PM MSTWind AdvisoryBOI51 hr
Feb 22, 3:44 AM MSTWinter Storm WarningBOI31 hr
Feb 22, 3:44 AM MSTWinter Weather AdvisoryBOI26 hr
Feb 28, 10:29 PM MSTDense Fog AdvisoryBOI12 hr
Mar 1, 10:24 PM MSTDense Fog AdvisoryBOI13 hr
Mar 20, 4:02 PM MDTSpecial Weather StatementBOI88 min
Apr 8, 4:12 AM MDTWind AdvisoryBOI17 hr
May 12, 12:07 PM MDTWind AdvisoryBOI35 hr
May 22, 1:25 PM MDTFrost AdvisoryBOI20 hr
May 22, 9:11 PM MDTFreeze WarningBOI12 hr
Jun 28, 1:28 PM MDTHeat AdvisoryBOI5 days
Jul 15, 1:58 PM MDTRed Flag WarningBOI40 hr
Jul 30, 1:54 PM MDTFire Weather WatchBOI22 hr
Jul 31, 11:43 AM MDTRed Flag WarningBOI34 hr
Aug 11, 8:27 AM MDTRed Flag WarningBOI13 hr
Aug 12, 3:24 AM MDTRed Flag WarningBOI19 hr
Aug 18, 2:10 PM MDTFire Weather WatchBOI23 hr
Aug 19, 12:47 PM MDTRed Flag WarningBOI4 days
Aug 22, 4:15 PM MDTMesoscale DiscussionSPC2 hr
Aug 22, 8:15 PM MDTSevere Thunderstorm WarningBOI60 min
Aug 22, 9:01 PM MDTSpecial Weather StatementBOI59 min
Aug 27, 9:47 PM MDTSpecial Weather StatementBOI43 min
Sep 1, 3:27 AM MDTFlash Flood WatchBOI69 hr
Sep 4, 8:50 AM MDTFlash Flood WatchBOI36 hr
Sep 4, 9:49 PM MDTMesoscale DiscussionSPC116 min
Sep 5, 1:08 AM MDTSpecial Weather StatementBOI52 min
Sep 5, 8:08 AM MDTSpecial Weather StatementBOI52 min
Sep 5, 1:06 PM MDTMesoscale DiscussionSPC54 min
Sep 5, 1:35 PM MDTSevere Thunderstorm WatchSPC7 hr
Sep 5, 4:11 PM MDTSevere Thunderstorm WarningBOI64 min
Sep 5, 4:52 PM MDTSevere Thunderstorm WarningBOI38 min
Sep 5, 4:55 PM MDTFlash Flood WarningBOI50 min
Sep 5, 5:01 PM MDTMesoscale DiscussionSPC89 min
Sep 13, 3:36 AM MDTFlash Flood WatchBOI19 hr
Sep 13, 10:15 PM MDTSpecial Weather StatementBOI60 min
Sep 14, 3:35 AM MDTFlash Flood WatchBOI18 hr
Sep 15, 7:04 PM MDTSpecial Weather StatementBOI56 min
Oct 3, 1:33 PM MDTFrost AdvisoryBOI14 hr
Oct 4, 3:21 AM MDTFreeze WarningBOI30 hr
Nov 15, 2:44 AM MSTWinter Weather AdvisoryBOI32 hr
Dec 5, 3:16 PM MSTWinter Weather AdvisoryBOI56 hr
Dec 16, 1:42 AM MSTDense Fog AdvisoryBOI12 hr
Dec 16, 2:08 PM MSTDense Fog AdvisoryBOI45 hr
Dec 19, 2:58 PM MSTWinter Weather AdvisoryBOI35 hr
Dec 25, 8:46 AM MSTDense Fog AdvisoryBOI3 hr
Dec 25, 2:38 PM MSTDense Fog AdvisoryBOI20 hr
Dec 26, 7:04 PM MSTDense Fog AdvisoryBOI19 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.