Alert archive / Washington / Okanogan County

Weather alerts in Okanogan County, Washington, 2010

72 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Okanogan County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts
72
Warnings
18
Watches
10
Advisories
40
Busiest month
December16 alerts
Busiest day
November 28, 20103 alerts

Over time

By month

Warning verification

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

Okanogan County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings110%0
Flash flood warnings010%

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Spokane, WA: tornado warnings10100%50%
NWS Spokane, WA: severe thunderstorm warnings16663%2273%23 min
NWS Spokane, WA: flash flood warnings30100%110%

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, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 4, 3:38 AM PSTWinter Weather AdvisoryOTX15 hr
Jan 4, 10:17 AM PSTWinter Storm WarningOTX24 hr
Jan 8, 4:10 AM PSTWinter Weather AdvisoryOTX16 days
Jan 10, 2:45 AM PSTWinter Weather AdvisoryOTX36 hr
Jan 13, 9:47 PM PSTAreal Flood AdvisoryOTX12 hr
Jan 18, 5:11 PM PSTAreal Flood WarningOTX41 hr
Feb 17, 5:21 AM PSTDense Fog AdvisoryOTX5 hr
Mar 10, 3:01 PM PSTWinter Weather AdvisoryOTX42 hr
Mar 28, 3:11 PM PDTWind AdvisoryOTX29 hr
Mar 31, 3:03 PM PDTWinter Storm WatchOTX24 hr
Apr 1, 2:53 PM PDTWinter Storm WarningOTX37 hr
Apr 1, 3:02 PM PDTWind AdvisoryOTX30 hr
Apr 2, 6:22 AM PDTWinter Weather AdvisoryOTX9 hr
Apr 7, 3:35 AM PDTWind AdvisoryOTX40 hr
Apr 7, 8:40 PM PDTWinter Storm WarningOTX20 hr
May 1, 2:36 PM PDTHigh Wind WatchOTX24 hr
May 2, 2:43 PM PDTHigh Wind WarningOTX31 hr
May 2, 2:43 PM PDTWind AdvisoryOTX31 hr
May 3, 9:48 AM PDTDust Storm WarningOTX11 hr
May 19, 2:58 PM PDTWind AdvisoryOTX9 hr
May 19, 9:04 PM PDTAreal Flood AdvisoryOTX4 hr
May 20, 7:59 AM PDTFreeze WarningOTX24 hr
May 21, 8:50 PM PDTFreeze WarningOTX12 hr
May 22, 2:41 PM PDTFreeze WarningOTX17 hr
May 23, 2:34 PM PDTFreeze WarningOTX17 hr
Jun 3, 2:36 PM PDTFlood WatchOTX31 hr
Jun 23, 7:18 PM PDTSevere Thunderstorm WarningOTX57 min
Jul 11, 11:08 AM PDTWind AdvisoryOTX35 hr
Jul 12, 2:53 PM PDTDust Storm WarningOTX7 hr
Jul 22, 10:49 AM PDTBlowing Dust AdvisoryOTX9 hr
Jul 31, 5:53 PM PDTSpecial Weather StatementOTX52 min
Jul 31, 7:57 PM PDTAreal Flood AdvisoryOTX3 hr
Aug 2, 4:25 PM PDTAreal Flood AdvisoryOTX90 min
Aug 3, 2:21 AM PDTFlash Flood WatchOTX19 hr
Aug 3, 5:29 PM PDTAreal Flood AdvisoryOTX53 min
Aug 4, 2:20 AM PDTFlash Flood WatchOTX17 hr
Aug 25, 2:52 PM PDTBlowing Dust AdvisoryOTX30 hr
Aug 25, 9:01 PM PDTWind AdvisoryOTX24 hr
Sep 3, 2:38 PM PDTBlowing Dust AdvisoryOTX30 hr
Sep 19, 3:55 PM PDTMesoscale DiscussionSPC95 min
Sep 19, 4:40 PM PDTAreal Flood AdvisoryOTX115 min
Sep 19, 5:00 PM PDTSpecial Weather StatementOTX60 min
Sep 19, 5:58 PM PDTSpecial Weather StatementOTX47 min
Nov 12, 6:43 AM PSTDense Fog AdvisoryOTX3 hr
Nov 15, 3:38 AM PSTHigh Wind WarningOTX30 hr
Nov 15, 3:38 AM PSTWind AdvisoryOTX30 hr
Nov 19, 9:45 PM PSTWinter Weather AdvisoryOTX11 hr
Nov 21, 11:52 AM PSTWinter Weather AdvisoryOTX25 hr
Nov 22, 12:44 PM PSTBlizzard WarningOTX21 hr
Nov 22, 2:16 PM PSTWind Chill WarningOTX19 hr
Nov 25, 10:23 AM PSTWinter Weather AdvisoryOTX65 hr
Nov 28, 4:11 AM PSTDense Fog AdvisoryOTX8 hr
Nov 28, 12:14 PM PSTDense Fog AdvisoryOTX23 hr
Nov 28, 2:48 PM PSTWinter Storm WatchOTX13 hr
Nov 29, 4:06 AM PSTWinter Storm WarningOTX54 hr
Nov 29, 4:06 AM PSTWinter Weather AdvisoryOTX54 hr
Dec 2, 6:49 PM PSTDense Fog AdvisoryOTX15 hr
Dec 6, 2:19 AM PSTWinter Storm WatchOTX33 hr
Dec 7, 11:17 AM PSTWinter Weather AdvisoryOTX27 hr
Dec 10, 3:53 AM PSTWinter Storm WatchOTX10 hr
Dec 10, 2:19 PM PSTWinter Storm WatchOTX14 hr
Dec 10, 2:19 PM PSTWinter Storm WarningOTX48 hr
Dec 11, 4:31 AM PSTWinter Weather AdvisoryOTX25 hr
Dec 13, 4:06 AM PSTWinter Weather AdvisoryOTX26 hr
Dec 17, 12:14 PM PSTWinter Weather AdvisoryOTX33 hr
Dec 19, 3:58 AM PSTWinter Weather AdvisoryOTX30 hr
Dec 22, 10:53 AM PSTWinter Weather AdvisoryOTX5 hr
Dec 23, 2:58 AM PSTDense Fog AdvisoryOTX7 hr
Dec 26, 2:45 PM PSTWinter Storm WatchOTX14 hr
Dec 27, 4:49 AM PSTWinter Storm WarningOTX70 hr
Dec 27, 4:49 AM PSTWinter Weather AdvisoryOTX25 hr
Dec 28, 6:36 AM PSTWinter Weather AdvisoryOTX33 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 archive20092011

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.