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
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 1 | 0% | 0 | ||
| Flash flood warnings | 0 | 1 | 0% |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Spokane, WA: tornado warnings | 1 | 0 | 100% | 5 | 0% | |
| NWS Spokane, WA: severe thunderstorm warnings | 16 | 6 | 63% | 22 | 73% | 23 min |
| NWS Spokane, WA: flash flood warnings | 3 | 0 | 100% | 11 | 0% |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 4, 3:38 AM PST | Winter Weather Advisory | OTX | 15 hr |
| Jan 4, 10:17 AM PST | Winter Storm Warning | OTX | 24 hr |
| Jan 8, 4:10 AM PST | Winter Weather Advisory | OTX | 16 days |
| Jan 10, 2:45 AM PST | Winter Weather Advisory | OTX | 36 hr |
| Jan 13, 9:47 PM PST | Areal Flood Advisory | OTX | 12 hr |
| Jan 18, 5:11 PM PST | Areal Flood Warning | OTX | 41 hr |
| Feb 17, 5:21 AM PST | Dense Fog Advisory | OTX | 5 hr |
| Mar 10, 3:01 PM PST | Winter Weather Advisory | OTX | 42 hr |
| Mar 28, 3:11 PM PDT | Wind Advisory | OTX | 29 hr |
| Mar 31, 3:03 PM PDT | Winter Storm Watch | OTX | 24 hr |
| Apr 1, 2:53 PM PDT | Winter Storm Warning | OTX | 37 hr |
| Apr 1, 3:02 PM PDT | Wind Advisory | OTX | 30 hr |
| Apr 2, 6:22 AM PDT | Winter Weather Advisory | OTX | 9 hr |
| Apr 7, 3:35 AM PDT | Wind Advisory | OTX | 40 hr |
| Apr 7, 8:40 PM PDT | Winter Storm Warning | OTX | 20 hr |
| May 1, 2:36 PM PDT | High Wind Watch | OTX | 24 hr |
| May 2, 2:43 PM PDT | High Wind Warning | OTX | 31 hr |
| May 2, 2:43 PM PDT | Wind Advisory | OTX | 31 hr |
| May 3, 9:48 AM PDT | Dust Storm Warning | OTX | 11 hr |
| May 19, 2:58 PM PDT | Wind Advisory | OTX | 9 hr |
| May 19, 9:04 PM PDT | Areal Flood Advisory | OTX | 4 hr |
| May 20, 7:59 AM PDT | Freeze Warning | OTX | 24 hr |
| May 21, 8:50 PM PDT | Freeze Warning | OTX | 12 hr |
| May 22, 2:41 PM PDT | Freeze Warning | OTX | 17 hr |
| May 23, 2:34 PM PDT | Freeze Warning | OTX | 17 hr |
| Jun 3, 2:36 PM PDT | Flood Watch | OTX | 31 hr |
| Jun 23, 7:18 PM PDT | Severe Thunderstorm Warning | OTX | 57 min |
| Jul 11, 11:08 AM PDT | Wind Advisory | OTX | 35 hr |
| Jul 12, 2:53 PM PDT | Dust Storm Warning | OTX | 7 hr |
| Jul 22, 10:49 AM PDT | Blowing Dust Advisory | OTX | 9 hr |
| Jul 31, 5:53 PM PDT | Special Weather Statement | OTX | 52 min |
| Jul 31, 7:57 PM PDT | Areal Flood Advisory | OTX | 3 hr |
| Aug 2, 4:25 PM PDT | Areal Flood Advisory | OTX | 90 min |
| Aug 3, 2:21 AM PDT | Flash Flood Watch | OTX | 19 hr |
| Aug 3, 5:29 PM PDT | Areal Flood Advisory | OTX | 53 min |
| Aug 4, 2:20 AM PDT | Flash Flood Watch | OTX | 17 hr |
| Aug 25, 2:52 PM PDT | Blowing Dust Advisory | OTX | 30 hr |
| Aug 25, 9:01 PM PDT | Wind Advisory | OTX | 24 hr |
| Sep 3, 2:38 PM PDT | Blowing Dust Advisory | OTX | 30 hr |
| Sep 19, 3:55 PM PDT | Mesoscale Discussion | SPC | 95 min |
| Sep 19, 4:40 PM PDT | Areal Flood Advisory | OTX | 115 min |
| Sep 19, 5:00 PM PDT | Special Weather Statement | OTX | 60 min |
| Sep 19, 5:58 PM PDT | Special Weather Statement | OTX | 47 min |
| Nov 12, 6:43 AM PST | Dense Fog Advisory | OTX | 3 hr |
| Nov 15, 3:38 AM PST | High Wind Warning | OTX | 30 hr |
| Nov 15, 3:38 AM PST | Wind Advisory | OTX | 30 hr |
| Nov 19, 9:45 PM PST | Winter Weather Advisory | OTX | 11 hr |
| Nov 21, 11:52 AM PST | Winter Weather Advisory | OTX | 25 hr |
| Nov 22, 12:44 PM PST | Blizzard Warning | OTX | 21 hr |
| Nov 22, 2:16 PM PST | Wind Chill Warning | OTX | 19 hr |
| Nov 25, 10:23 AM PST | Winter Weather Advisory | OTX | 65 hr |
| Nov 28, 4:11 AM PST | Dense Fog Advisory | OTX | 8 hr |
| Nov 28, 12:14 PM PST | Dense Fog Advisory | OTX | 23 hr |
| Nov 28, 2:48 PM PST | Winter Storm Watch | OTX | 13 hr |
| Nov 29, 4:06 AM PST | Winter Storm Warning | OTX | 54 hr |
| Nov 29, 4:06 AM PST | Winter Weather Advisory | OTX | 54 hr |
| Dec 2, 6:49 PM PST | Dense Fog Advisory | OTX | 15 hr |
| Dec 6, 2:19 AM PST | Winter Storm Watch | OTX | 33 hr |
| Dec 7, 11:17 AM PST | Winter Weather Advisory | OTX | 27 hr |
| Dec 10, 3:53 AM PST | Winter Storm Watch | OTX | 10 hr |
| Dec 10, 2:19 PM PST | Winter Storm Watch | OTX | 14 hr |
| Dec 10, 2:19 PM PST | Winter Storm Warning | OTX | 48 hr |
| Dec 11, 4:31 AM PST | Winter Weather Advisory | OTX | 25 hr |
| Dec 13, 4:06 AM PST | Winter Weather Advisory | OTX | 26 hr |
| Dec 17, 12:14 PM PST | Winter Weather Advisory | OTX | 33 hr |
| Dec 19, 3:58 AM PST | Winter Weather Advisory | OTX | 30 hr |
| Dec 22, 10:53 AM PST | Winter Weather Advisory | OTX | 5 hr |
| Dec 23, 2:58 AM PST | Dense Fog Advisory | OTX | 7 hr |
| Dec 26, 2:45 PM PST | Winter Storm Watch | OTX | 14 hr |
| Dec 27, 4:49 AM PST | Winter Storm Warning | OTX | 70 hr |
| Dec 27, 4:49 AM PST | Winter Weather Advisory | OTX | 25 hr |
| Dec 28, 6:36 AM PST | Winter Weather Advisory | OTX | 33 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 | 1 |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 3 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 6 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 17 |
| Cold | |
| Freeze Warning | 4 |
| Wind Chill Warning | 1 |
| Wind and dust | |
| Dust Storm Warning | 2 |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Blowing Dust Advisory | 3 |
| Wind Advisory | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
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.