Alert archive / Idaho / Boundary County
Weather alerts in Boundary County, Idaho, 2009
56 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Boundary County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 56
- Warnings
- 14
- Watches
- 13
- Advisories
- 28
- Busiest month
- January10 alerts
- Busiest day
- January 6, 20093 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Boundary County, 2009
| 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 | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Spokane, WA: tornado warnings | 1 | 0 | 100% | 1 | 0% | |
| NWS Spokane, WA: severe thunderstorm warnings | 27 | 11 | 59% | 27 | 74% | 17 min |
| NWS Spokane, WA: flash flood warnings | 7 | 3 | 57% | 6 | 67% | 20 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, 3:02 AM PST | Winter Storm Watch | OTX | 33 hr |
| Jan 4, 5:01 AM PST | Winter Storm Warning | OTX | 35 hr |
| Jan 5, 3:56 PM PST | Winter Weather Advisory | OTX | 19 hr |
| Jan 5, 4:08 PM PST | Flood Watch | OTX | 22 hr |
| Jan 6, 11:00 AM PST | Winter Storm Warning | OTX | 19 hr |
| Jan 6, 2:46 PM PST | Areal Flood Advisory | OTX | 47 hr |
| Jan 9, 2:46 PM PST | Winter Weather Advisory | OTX | 37 hr |
| Jan 12, 3:45 PM PST | Dense Fog Advisory | OTX | 23 hr |
| Jan 13, 9:39 AM PST | Air Stagnation Advisory | OTX | 11 days |
| Jan 26, 2:38 PM PST | Winter Weather Advisory | OTX | 42 hr |
| Feb 6, 6:22 AM PST | Winter Weather Advisory | OTX | 6 hr |
| Feb 7, 11:04 PM PST | Dense Fog Advisory | OTX | 11 hr |
| Feb 20, 5:29 AM PST | Dense Fog Advisory | OTX | 6 hr |
| Feb 23, 4:23 AM PST | Winter Storm Watch | OTX | 8 hr |
| Feb 23, 12:06 PM PST | Winter Storm Warning | OTX | 34 hr |
| Feb 25, 3:08 PM PST | Winter Storm Warning | OTX | 24 hr |
| Mar 4, 3:14 PM PST | Winter Storm Warning | OTX | 37 hr |
| Mar 7, 4:10 AM PST | Winter Weather Advisory | OTX | 36 hr |
| Mar 9, 3:50 AM PDT | Winter Weather Advisory | OTX | 31 hr |
| Mar 13, 3:28 PM PDT | Winter Weather Advisory | OTX | 48 hr |
| Mar 23, 2:31 PM PDT | Winter Storm Watch | OTX | 25 hr |
| Mar 28, 9:29 AM PDT | Winter Weather Advisory | OTX | 25 hr |
| Mar 30, 3:20 PM PDT | Winter Weather Advisory | OTX | 29 hr |
| Apr 1, 3:42 AM PDT | Winter Storm Watch | OTX | 11 hr |
| Apr 1, 3:42 AM PDT | Winter Weather Advisory | OTX | 49 hr |
| May 20, 2:45 PM PDT | Freeze Warning | OTX | 17 hr |
| Jun 14, 8:51 AM PDT | Flash Flood Watch | OTX | 35 hr |
| Jul 5, 12:25 PM PDT | Red Flag Warning | OTX | 20 hr |
| Jul 12, 8:48 PM PDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 23, 6:08 AM PDT | Red Flag Warning | OTX | 38 hr |
| Jul 24, 1:45 PM PDT | Areal Flood Advisory | OTX | 5 hr |
| Jul 28, 2:57 PM PDT | Special Weather Statement | OTX | 48 min |
| Aug 6, 4:30 PM PDT | Areal Flood Advisory | OTX | 3 hr |
| Aug 14, 3:11 PM PDT | Areal Flood Advisory | OTX | 63 min |
| Aug 27, 2:42 PM PDT | Red Flag Warning | OTX | 29 hr |
| Sep 6, 6:02 PM PDT | Severe Thunderstorm Warning | OTX | 35 min |
| Sep 20, 3:26 AM PDT | Freeze Warning | OTX | 30 hr |
| Sep 25, 5:47 AM PDT | Fire Weather Watch | OTX | 9 hr |
| Sep 25, 2:49 PM PDT | Red Flag Warning | OTX | 30 hr |
| Oct 3, 3:41 AM PDT | Wind Advisory | OTX | 39 hr |
| Oct 20, 6:41 AM PDT | Dense Fog Advisory | OTX | 5 hr |
| Oct 28, 2:56 AM PDT | Winter Storm Watch | OTX | 13 hr |
| Nov 6, 3:44 AM PST | Winter Storm Watch | OTX | 25 hr |
| Nov 7, 4:17 AM PST | Winter Storm Warning | OTX | 24 hr |
| Nov 20, 9:55 PM PST | Winter Storm Watch | OTX | 18 hr |
| Nov 21, 4:01 PM PST | Winter Weather Advisory | OTX | 28 hr |
| Dec 5, 2:58 AM PST | Wind Chill Watch | OTX | 36 hr |
| Dec 6, 2:59 AM PST | Wind Advisory | OTX | 16 hr |
| Dec 11, 2:29 PM PST | Winter Weather Advisory | OTX | 24 hr |
| Dec 13, 2:30 PM PST | Winter Storm Watch | OTX | 14 hr |
| Dec 14, 4:48 AM PST | Winter Storm Warning | OTX | 47 hr |
| Dec 14, 4:48 AM PST | Winter Weather Advisory | OTX | 47 hr |
| Dec 16, 4:02 AM PST | Freezing Rain Advisory | OTX | 8 hr |
| Dec 21, 1:03 PM PST | Areal Flood Advisory | OTX | 7 hr |
| Dec 21, 8:34 PM PST | Areal Flood Advisory | OTX | 6 hr |
| Dec 23, 3:18 PM PST | Air Stagnation Advisory | OTX | 7 days |
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 |
| Severe Thunderstorm Watch | 1 |
| Special Weather Statement | 1 |
| Flooding | |
| Flash Flood Watch | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 6 |
| Winter | |
| Winter Storm Warning | 7 |
| Winter Storm Watch | 8 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 13 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Watch | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 4 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Air Stagnation Advisory | 2 |
| Dense Fog Advisory | 4 |
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.