Alert archive / Idaho / Nez Perce County
Weather alerts in Nez Perce County, Idaho, 2019
46 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Nez Perce County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 46
- Warnings
- 7
- Watches
- 7
- Advisories
- 24
- Busiest month
- February12 alerts
- Busiest day
- February 24, 20193 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Nez Perce County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 1 | 0% | 7 | 57% | 23 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Spokane, WA: severe thunderstorm warnings | 26 | 11 | 58% | 35 | 57% | 24 min |
| NWS Spokane, WA: flash flood warnings | 18 | 4 | 78% | 23 | 26% | 34 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 7, 3:18 PM PST | Winter Weather Advisory | OTX | 59 hr |
| Jan 19, 2:41 PM PST | Winter Weather Advisory | OTX | 37 hr |
| Jan 22, 3:55 AM PST | Winter Weather Advisory | OTX | 23 hr |
| Jan 28, 5:00 AM PST | Dense Fog Advisory | OTX | 5 hr |
| Feb 2, 3:12 PM PST | Winter Storm Warning | OTX | 42 hr |
| Feb 2, 3:12 PM PST | Winter Weather Advisory | OTX | 58 hr |
| Feb 10, 3:50 AM PST | Winter Weather Advisory | OTX | 42 hr |
| Feb 17, 2:42 AM PST | Winter Weather Advisory | OTX | 25 hr |
| Feb 18, 2:15 AM PST | Winter Storm Watch | OTX | 24 hr |
| Feb 18, 2:30 PM PST | Winter Storm Warning | OTX | 48 hr |
| Feb 20, 2:58 PM PST | Winter Weather Advisory | OTX | 15 hr |
| Feb 24, 2:59 AM PST | Winter Storm Watch | OTX | 12 hr |
| Feb 24, 3:00 PM PST | Winter Storm Warning | OTX | 37 hr |
| Feb 24, 3:00 PM PST | Winter Weather Advisory | OTX | 43 hr |
| Feb 26, 2:54 PM PST | Winter Weather Advisory | OTX | 24 hr |
| Feb 27, 2:56 PM PST | Winter Weather Advisory | OTX | 19 hr |
| Apr 11, 1:41 PM PDT | Flood Watch | OTX | 18 hr |
| Apr 19, 3:00 AM PDT | Flood Watch | OTX | 38 hr |
| Apr 28, 2:25 AM PDT | Freeze Warning | OTX | 30 hr |
| Apr 29, 2:38 PM PDT | Freeze Warning | OTX | 17 hr |
| May 16, 2:44 AM PDT | Flood Watch | OTX | 48 hr |
| May 16, 2:52 PM PDT | Mesoscale Discussion | SPC | 113 min |
| May 17, 9:10 AM PDT | Areal Flood Advisory | OTX | 5 hr |
| Jun 13, 2:32 PM PDT | Areal Flood Advisory | OTX | 2 hr |
| Jun 26, 12:26 PM PDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 26, 3:50 PM PDT | Severe Thunderstorm Warning | OTX | 40 min |
| Jun 26, 4:49 PM PDT | Mesoscale Discussion | SPC | 56 min |
| Jun 28, 8:55 PM PDT | Special Weather Statement | OTX | 35 min |
| Jul 5, 6:43 PM PDT | Special Weather Statement | OTX | 62 min |
| Jul 5, 7:44 PM PDT | Special Weather Statement | OTX | 46 min |
| Aug 5, 2:48 PM PDT | Heat Advisory | OTX | 3 days |
| Aug 9, 3:04 PM PDT | Flash Flood Watch | OTX | 35 hr |
| Aug 10, 10:41 AM PDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 3:53 PM PDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 4:12 PM PDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 11:45 AM PDT | Areal Flood Advisory | OTX | 103 min |
| Sep 10, 3:04 PM PDT | Areal Flood Advisory | OTX | 116 min |
| Sep 28, 2:42 PM PDT | Winter Weather Advisory | OTX | 16 hr |
| Sep 29, 3:27 AM PDT | Freeze Warning | OTX | 55 hr |
| Oct 8, 2:57 AM PDT | Winter Weather Advisory | OTX | 32 hr |
| Oct 18, 2:49 AM PDT | Winter Weather Advisory | OTX | 54 hr |
| Nov 1, 9:38 AM PDT | Air Stagnation Advisory | OTX | 4 days |
| Nov 5, 9:31 AM PST | Air Stagnation Advisory | OTX | 7 days |
| Nov 22, 9:56 PM PST | Dense Fog Advisory | OTX | 14 hr |
| Dec 13, 2:24 PM PST | Winter Weather Advisory | OTX | 20 hr |
| Dec 29, 9:54 PM PST | Dense Fog Advisory | OTX | 10 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 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 3 |
| Flooding | |
| Flash Flood Watch | 1 |
| Flood Watch | 3 |
| Areal Flood Advisory | 4 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 14 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 3 |
| Fog and smoke | |
| Air Stagnation Advisory | 2 |
| Dense Fog Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.