Alert archive / Idaho / Lewis County
Weather alerts in Lewis County, Idaho, 2008
53 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lewis County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 53
- Warnings
- 11
- Watches
- 7
- Advisories
- 30
- Busiest month
- January12 alerts
- Busiest day
- January 14, 20082 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Lewis County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 0 | 100% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Spokane, WA: tornado warnings | 0 | 1 | 0% | |||
| NWS Spokane, WA: severe thunderstorm warnings | 31 | 15 | 52% | 27 | 85% | 22 min |
| NWS Spokane, WA: flash flood warnings | 4 | 1 | 75% | 6 | 17% | 52 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, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 3, 2:37 PM PST | Wind Advisory | OTX | 31 hr |
| Jan 7, 2:44 PM PST | Snow Advisory | OTX | 39 hr |
| Jan 14, 3:53 AM PST | Wind Advisory | OTX | 26 hr |
| Jan 14, 1:34 PM PST | Snow and Blowing Snow Advisory | OTX | 19 hr |
| Jan 18, 2:35 PM PST | Snow and Blowing Snow Advisory | OTX | 44 hr |
| Jan 18, 2:35 PM PST | Winter Storm Watch | OTX | 14 hr |
| Jan 20, 10:05 AM PST | Snow Advisory | OTX | 8 hr |
| Jan 25, 3:32 AM PST | Winter Storm Watch | OTX | 19 hr |
| Jan 25, 10:04 PM PST | Heavy Snow Warning | OTX | 54 hr |
| Jan 27, 4:51 AM PST | Mesoscale Discussion | SPC | 5 hr |
| Jan 28, 3:30 PM PST | Snow Advisory | OTX | 24 hr |
| Jan 30, 4:06 AM PST | Winter Storm Warning | OTX | 3 days |
| Feb 2, 3:12 PM PST | Snow Advisory | OTX | 29 hr |
| Feb 4, 2:24 PM PST | Snow and Blowing Snow Advisory | OTX | 38 hr |
| Feb 6, 4:36 AM PST | Snow and Blowing Snow Advisory | OTX | 33 hr |
| Feb 6, 9:35 PM PST | Wind Advisory | OTX | 21 hr |
| Mar 3, 7:59 AM PST | Snow Advisory | OTX | 31 hr |
| Mar 4, 3:29 AM PST | Heavy Snow Warning | OTX | 11 hr |
| Mar 14, 2:25 PM PDT | Snow Advisory | OTX | 19 hr |
| Mar 26, 2:15 PM PDT | Snow Advisory | OTX | 19 hr |
| Mar 26, 9:45 PM PDT | Heavy Snow Warning | OTX | 11 hr |
| Mar 29, 2:51 PM PDT | Snow Advisory | OTX | 43 hr |
| Apr 4, 5:24 PM PDT | Snow Advisory | OTX | 5 hr |
| Apr 8, 3:43 PM PDT | Snow Advisory | OTX | 19 hr |
| Apr 9, 1:12 PM PDT | Snow Advisory | OTX | 19 hr |
| Apr 15, 8:03 PM PDT | Snow Advisory | OTX | 3 hr |
| Apr 29, 10:25 AM PDT | Snow Advisory | OTX | 20 hr |
| May 15, 1:45 PM PDT | Flood Watch | OTX | 31 hr |
| May 16, 7:48 PM PDT | River Flood Watch | OTX | 40 hr |
| Jul 3, 1:24 PM PDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 5, 1:32 PM PDT | Fire Weather Watch | MSO | 41 hr |
| Aug 7, 2:45 AM PDT | Red Flag Warning | MSO | 29 hr |
| Aug 8, 5:25 PM PDT | Severe Thunderstorm Warning | OTX | 65 min |
| Aug 8, 6:30 PM PDT | Severe Thunderstorm Warning | OTX | 20 min |
| Aug 16, 12:55 PM PDT | Fire Weather Watch | MSO | 24 hr |
| Aug 17, 12:54 PM PDT | Red Flag Warning | MSO | 54 hr |
| Aug 18, 4:09 PM PDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 18, 8:18 PM PDT | Mesoscale Discussion | SPC | 87 min |
| Nov 8, 9:23 PM PST | Dense Fog Advisory | OTX | 15 hr |
| Nov 11, 2:19 PM PST | Wind Advisory | OTX | 32 hr |
| Nov 14, 2:26 PM PST | Air Stagnation Advisory | OTX | 4 days |
| Nov 29, 5:58 PM PST | Dense Fog Advisory | OTX | 42 hr |
| Dec 6, 4:20 AM PST | Mesoscale Discussion | SPC | 4 hr |
| Dec 7, 3:29 PM PST | Winter Weather Advisory | OTX | 10 hr |
| Dec 8, 1:07 AM PST | Winter Storm Warning | OTX | 8 hr |
| Dec 11, 3:29 PM PST | Winter Weather Advisory | OTX | 71 hr |
| Dec 16, 2:51 PM PST | Winter Storm Warning | OTX | 61 hr |
| Dec 20, 9:49 AM PST | Winter Storm Warning | OTX | 54 hr |
| Dec 23, 2:11 PM PST | Winter Weather Advisory | OTX | 43 hr |
| Dec 26, 5:13 AM PST | Winter Weather Advisory | OTX | 47 hr |
| Dec 27, 12:26 PM PST | Mesoscale Discussion | SPC | 3 hr |
| Dec 29, 1:32 PM PST | Wind Advisory | OTX | 8 hr |
| Dec 30, 2:50 PM PST | Winter Weather Advisory | OTX | 37 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 | 2 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 5 |
| Flooding | |
| Flood Watch | 1 |
| River Flood Watch | 1 |
| Winter | |
| Heavy Snow Warning | 3 |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 2 |
| Snow Advisory | 13 |
| Snow and Blowing Snow Advisory | 4 |
| Winter Weather Advisory | 5 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Air Stagnation Advisory | 1 |
| Dense Fog Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20072009
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.