Alert archive / Idaho / Washington County

Weather alerts in Washington County, Idaho, 2022

85 weather alerts in 2022, 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 2022. Tap one for its archive.

Alerts: 85
Warnings: 18
Watches: 14
Advisories: 38
Busiest month: December19 alerts
Busiest day: June 5, 20223 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, 2022

	Warnings	With a report	False alarm ratio
Tornado warnings	0
Severe thunderstorm warnings	6	2	67%
Flash flood warnings	0

Each office's whole area, 2022

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Boise, ID: tornado warnings	0			1	0%
NWS Boise, ID: severe thunderstorm warnings	61	15	75%	40	63%	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.

Issued	Product	Office	Lasted
Jan 1, 2:17 AM MST	Winter Storm Watch	BOI	37 hr
Jan 2, 2:56 PM MST	Winter Weather Advisory	BOI	20 hr
Jan 2, 2:56 PM MST	Winter Weather Advisory	BOI	68 hr
Jan 3, 11:22 AM MST	Winter Storm Warning	BOI	42 hr
Jan 5, 2:20 PM MST	Winter Weather Advisory	BOI	47 hr
Jan 13, 12:37 PM MST	Air Stagnation Advisory	BOI	7 days
Jan 20, 4:25 AM MST	Winter Weather Advisory	BOI	16 hr
Feb 21, 1:21 PM MST	Winter Weather Advisory	BOI	37 hr
Apr 3, 3:33 AM MDT	Wind Advisory	BOI	62 hr
Apr 3, 8:18 PM MDT	Winter Weather Advisory	BOI	34 hr
Apr 6, 2:33 PM MDT	Wind Advisory	BOI	61 hr
Apr 10, 3:12 AM MDT	Winter Weather Advisory	BOI	63 hr
May 2, 2:16 PM MDT	Special Weather Statement	BOI	29 min
May 2, 2:44 PM MDT	Special Weather Statement	BOI	46 min
May 9, 2:57 AM MDT	Freeze Warning	BOI	30 hr
May 28, 8:02 PM MDT	Special Weather Statement	BOI	58 min
Jun 3, 2:51 PM MDT	Special Weather Statement	BOI	24 min
Jun 5, 12:57 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 5, 2:33 PM MDT	Severe Thunderstorm Warning	BOI	42 min
Jun 5, 3:10 PM MDT	Severe Thunderstorm Warning	BOI	38 min
Jun 10, 2:24 PM MDT	Flood Watch	BOI	58 hr
Jun 11, 4:24 PM MDT	Special Weather Statement	BOI	36 min
Jun 11, 4:57 PM MDT	Special Weather Statement	BOI	33 min
Jul 9, 3:38 PM MDT	Special Weather Statement	BOI	22 min
Jul 9, 3:57 PM MDT	Special Weather Statement	BOI	48 min
Jul 9, 4:09 PM MDT	Severe Thunderstorm Warning	BOI	51 min
Jul 12, 4:15 AM MDT	Heat Advisory	BOI	20 hr
Jul 26, 1:30 PM MDT	Heat Advisory	BOI	6 days
Jul 28, 2:11 PM MDT	Excessive Heat Warning	BOI	4 days
Jul 28, 2:11 PM MDT	Heat Advisory	BOI	4 days
Aug 3, 7:21 PM MDT	Special Weather Statement	BOI	39 min
Aug 3, 7:55 PM MDT	Severe Thunderstorm Warning	BOI	39 min
Aug 10, 2:08 PM MDT	Mesoscale Discussion	SPC	3 hr
Aug 11, 2:23 PM MDT	Mesoscale Discussion	SPC	3 hr
Aug 12, 1:13 PM MDT	Mesoscale Discussion	SPC	92 min
Aug 12, 1:55 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 15, 2:18 PM MDT	Excessive Heat Warning	BOI	55 hr
Aug 16, 3:17 AM MDT	Heat Advisory	BOI	42 hr
Aug 21, 2:10 PM MDT	Fire Weather Watch	BOI	18 hr
Aug 22, 7:43 AM MDT	Red Flag Warning	BOI	10 hr
Aug 29, 2:14 PM MDT	Heat Advisory	BOI	9 days
Sep 1, 2:22 PM MDT	Fire Weather Watch	BOI	23 hr
Sep 2, 1:16 PM MDT	Red Flag Warning	BOI	32 hr
Sep 4, 3:14 AM MDT	Heat Advisory	BOI	4 days
Sep 5, 2:53 PM MDT	Fire Weather Watch	BOI	23 hr
Sep 6, 2:21 PM MDT	Red Flag Warning	BOI	31 hr
Sep 7, 5:56 PM MDT	Mesoscale Discussion	SPC	2 hr
Sep 7, 6:08 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOI	37 min
Sep 7, 6:41 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOI	64 min
Sep 7, 9:06 PM MDT	Special Weather Statement	BOI	54 min
Sep 15, 6:45 PM MDT	Areal Flood Advisory	BOI	3 hr
Oct 21, 2:15 PM MDT	Winter Weather Advisory	BOI	28 hr
Oct 22, 2:51 AM MDT	Freeze Watch	BOI	12 hr
Oct 22, 2:25 PM MDT	Freeze Warning	BOI	44 hr
Nov 2, 1:45 PM MDT	Winter Storm Watch	BOI	25 hr
Nov 3, 6:40 AM MDT	Dense Fog Advisory	BOI	3 hr
Nov 3, 2:19 PM MDT	Winter Storm Warning	BOI	28 hr
Nov 3, 2:24 PM MDT	Wind Advisory	BOI	48 hr
Nov 8, 2:42 AM MST	Winter Weather Advisory	BOI	38 hr
Nov 14, 10:42 AM MST	Air Stagnation Advisory	BOI	12 days
Nov 17, 3:04 AM MST	Dense Fog Advisory	BOI	7 hr
Nov 26, 1:14 PM MST	Winter Storm Watch	BOI	14 hr
Nov 27, 3:10 AM MST	Winter Weather Advisory	BOI	34 hr
Nov 28, 1:46 PM MST	Winter Storm Watch	BOI	24 hr
Nov 29, 1:23 PM MST	Winter Storm Warning	BOI	64 hr
Nov 29, 1:23 PM MST	Winter Weather Advisory	BOI	64 hr
Dec 3, 3:12 AM MST	Winter Weather Advisory	BOI	38 hr
Dec 5, 1:07 AM MST	Dense Fog Advisory	BOI	34 hr
Dec 7, 1:45 AM MST	Dense Fog Advisory	BOI	8 hr
Dec 7, 2:38 AM MST	Winter Storm Watch	BOI	11 hr
Dec 7, 2:01 PM MST	Winter Weather Advisory	BOI	46 hr
Dec 8, 1:03 PM MST	Winter Storm Watch	BOI	23 hr
Dec 9, 9:57 AM MST	Winter Weather Advisory	BOI	3 min
Dec 9, 11:55 AM MST	Winter Storm Warning	BOI	47 hr
Dec 11, 2:09 PM MST	Winter Weather Advisory	BOI	39 hr
Dec 20, 2:39 AM MST	Winter Storm Watch	BOI	11 hr
Dec 20, 1:41 PM MST	Winter Weather Advisory	BOI	20 hr
Dec 21, 2:07 PM MST	Winter Weather Advisory	BOI	61 hr
Dec 24, 3:29 AM MST	Winter Weather Advisory	BOI	20 hr
Dec 25, 1:55 PM MST	Winter Storm Watch	BOI	14 hr
Dec 26, 3:51 AM MST	Wind Advisory	BOI	33 hr
Dec 26, 8:00 PM MST	Dense Fog Advisory	BOI	8 hr
Dec 29, 3:02 AM MST	Winter Storm Warning	BOI	33 hr
Dec 29, 3:02 AM MST	Winter Weather Advisory	BOI	33 hr
Dec 30, 9:07 PM MST	Winter Weather Advisory	BOI	4 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	6
Severe Thunderstorm Watch	1
Mesoscale Discussion	5
Special Weather Statement	10
Flooding
Flood Watch	1
Areal Flood Advisory	1
Winter
Winter Storm Warning	5
Winter Storm Watch	8
Winter Weather Advisory	20
Heat
Excessive Heat Warning	2
Heat Advisory	6
Cold
Freeze Warning	2
Freeze Watch	1
Wind and dust
Wind Advisory	4
Fire
Red Flag Warning	3
Fire Weather Watch	3
Fog and smoke
Air Stagnation Advisory	2
Dense Fog Advisory	5

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2021 2023

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.