Alert archive / Washington / Columbia County
Weather alerts in Columbia County, Washington, 2009
79 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Columbia County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 79
- Warnings
- 14
- Watches
- 13
- Advisories
- 48
- Busiest month
- January17 alerts
- Busiest day
- November 21, 20094 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Columbia County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 0 | 100% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Pendleton, OR: tornado warnings | 0 | 1 | 0% | |||
| NWS Pendleton, OR: severe thunderstorm warnings | 20 | 13 | 35% | 42 | 62% | 18 min |
| NWS Pendleton, OR: flash flood warnings | 0 | 2 | 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 1, 4:42 AM PST | Wind Advisory | PDT | 16 hr |
| Jan 1, 9:33 PM PST | Areal Flood Advisory | PDT | 153 days |
| Jan 2, 3:54 AM PST | Winter Weather Advisory | PDT | 15 hr |
| Jan 2, 11:37 AM PST | Winter Storm Warning | PDT | 3 hr |
| Jan 3, 3:04 PM PST | Winter Storm Watch | PDT | 18 hr |
| Jan 4, 9:27 AM PST | Winter Storm Warning | PDT | 53 hr |
| Jan 4, 10:04 PM PST | Mesoscale Discussion | SPC | 4 hr |
| Jan 6, 1:03 PM PST | Flood Watch | PDT | 48 hr |
| Jan 6, 5:53 PM PST | Wind Advisory | PDT | 18 hr |
| Jan 7, 2:56 PM PST | Wind Advisory | PDT | 18 hr |
| Jan 8, 4:16 PM PST | Wind Advisory | PDT | 6 hr |
| Jan 13, 9:28 AM PST | Air Stagnation Advisory | PDT | 11 days |
| Jan 14, 11:33 AM PST | Dense Fog Advisory | PDT | 24 hr |
| Jan 15, 11:38 AM PST | Freezing Fog Advisory | PDT | 7 days |
| Jan 23, 6:28 AM PST | Winter Weather Advisory | PDT | 5 hr |
| Jan 23, 11:54 AM PST | Freezing Fog Advisory | PDT | 22 hr |
| Jan 24, 10:16 AM PST | Winter Weather Advisory | PDT | 29 hr |
| Feb 6, 10:38 PM PST | Dense Fog Advisory | PDT | 14 hr |
| Feb 7, 1:50 PM PST | Freezing Fog Advisory | PDT | 22 hr |
| Feb 8, 2:58 PM PST | Freezing Fog Advisory | PDT | 7 hr |
| Feb 10, 10:16 PM PST | Winter Weather Advisory | PDT | 12 hr |
| Feb 16, 3:34 AM PST | Dense Fog Advisory | PDT | 6 hr |
| Feb 19, 7:01 AM PST | Freezing Fog Advisory | PDT | 6 hr |
| Feb 19, 10:30 PM PST | Freezing Fog Advisory | PDT | 16 hr |
| Mar 4, 3:40 AM PST | Winter Storm Watch | PDT | 25 hr |
| Mar 4, 2:58 PM PST | Winter Storm Warning | PDT | 40 hr |
| Mar 5, 4:32 AM PST | Winter Weather Advisory | PDT | 26 hr |
| Mar 7, 12:28 PM PST | Wind Advisory | PDT | 6 hr |
| Mar 7, 3:06 PM PST | Winter Weather Advisory | PDT | 23 hr |
| Mar 15, 11:28 AM PDT | Wind Advisory | PDT | 9 hr |
| Mar 23, 2:34 PM PDT | Winter Storm Watch | PDT | 20 hr |
| Mar 24, 10:58 AM PDT | Winter Storm Warning | PDT | 41 hr |
| Mar 28, 3:41 AM PDT | Winter Storm Watch | PDT | 5 hr |
| Mar 28, 3:54 AM PDT | Wind Advisory | PDT | 24 hr |
| Mar 28, 8:46 AM PDT | Winter Storm Warning | PDT | 30 hr |
| Mar 30, 3:13 PM PDT | Wind Advisory | PDT | 29 hr |
| Mar 30, 3:20 PM PDT | Winter Weather Advisory | PDT | 37 hr |
| Mar 31, 1:37 PM PDT | High Wind Warning | PDT | 6 hr |
| Apr 1, 3:45 AM PDT | Winter Storm Watch | PDT | 12 hr |
| Apr 1, 3:38 PM PDT | Winter Storm Warning | PDT | 37 hr |
| Apr 1, 3:38 PM PDT | Winter Weather Advisory | PDT | 25 hr |
| Apr 23, 2:36 PM PDT | Freeze Warning | PDT | 18 hr |
| May 12, 3:46 AM PDT | Wind Advisory | PDT | 16 hr |
| May 18, 5:33 PM PDT | Severe Thunderstorm Warning | PDT | 35 min |
| Jun 4, 8:59 PM PDT | Areal Flood Advisory | PDT | 7 hr |
| Jun 5, 8:59 AM PDT | Flash Flood Watch | PDT | 14 hr |
| Jun 7, 3:37 PM PDT | Special Weather Statement | OTX | 38 min |
| Jul 5, 4:25 PM PDT | Mesoscale Discussion | SPC | 65 min |
| Jul 16, 2:59 PM PDT | Heat Advisory | PDT | 53 hr |
| Jul 20, 2:08 PM PDT | Heat Advisory | PDT | 61 hr |
| Jul 26, 2:20 PM PDT | Heat Advisory | PDT | 9 days |
| Aug 18, 2:05 PM PDT | Heat Advisory | PDT | 54 hr |
| Oct 2, 2:42 PM PDT | Winter Storm Watch | PDT | 13 hr |
| Oct 3, 3:40 AM PDT | Winter Weather Advisory | PDT | 38 hr |
| Oct 8, 2:55 PM PDT | Blowing Dust Advisory | PDT | 23 hr |
| Oct 9, 3:51 AM PDT | Freeze Warning | PDT | 30 hr |
| Oct 10, 4:05 AM PDT | Hard Freeze Warning | PDT | 30 hr |
| Oct 26, 2:10 PM PDT | Wind Advisory | PDT | 7 hr |
| Oct 26, 2:21 PM PDT | Winter Weather Advisory | PDT | 27 hr |
| Nov 5, 3:19 PM PST | Wind Advisory | PDT | 20 hr |
| Nov 15, 9:00 AM PST | Wind Advisory | PDT | 39 hr |
| Nov 16, 6:10 PM PST | High Wind Warning | PDT | 20 hr |
| Nov 19, 4:26 PM PST | Wind Advisory | PDT | 20 hr |
| Nov 21, 4:21 AM PST | High Wind Watch | PDT | 11 hr |
| Nov 21, 4:33 AM PST | Winter Storm Watch | PDT | 11 hr |
| Nov 21, 3:04 PM PST | Wind Advisory | PDT | 28 hr |
| Nov 21, 3:29 PM PST | Winter Storm Warning | PDT | 28 hr |
| Dec 11, 3:56 AM PST | Winter Storm Watch | PDT | 11 hr |
| Dec 11, 2:52 PM PST | Winter Storm Warning | PDT | 48 hr |
| Dec 13, 3:13 PM PST | Winter Storm Watch | PDT | 24 hr |
| Dec 14, 4:01 AM PST | Winter Weather Advisory | PDT | 54 hr |
| Dec 15, 9:25 AM PST | Mesoscale Discussion | SPC | 4 hr |
| Dec 15, 12:29 PM PST | Freezing Rain Advisory | PDT | 16 hr |
| Dec 18, 6:57 AM PST | Dense Fog Advisory | PDT | 3 days |
| Dec 23, 2:25 PM PST | Air Stagnation Advisory | PDT | 7 days |
| Dec 29, 4:01 AM PST | Winter Weather Advisory | PDT | 30 hr |
| Dec 30, 4:27 AM PST | Winter Storm Watch | PDT | 10 hr |
| Dec 30, 2:54 PM PST | Winter Weather Advisory | PDT | 42 hr |
| Dec 30, 2:54 PM PST | Freezing Rain Advisory | PDT | 28 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 | 3 |
| Special Weather Statement | 1 |
| Flooding | |
| Flash Flood Watch | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 8 |
| Winter Storm Watch | 10 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 13 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 2 |
| Hard Freeze Warning | 1 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Blowing Dust Advisory | 1 |
| Wind Advisory | 14 |
| Fog and smoke | |
| Air Stagnation Advisory | 2 |
| Dense Fog Advisory | 4 |
| Freezing Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.