Alert archive / Idaho / Nez Perce County
Weather alerts in Nez Perce County, Idaho, 2023
49 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 49
- Warnings
- 7
- Watches
- 9
- Advisories
- 24
- Busiest month
- June12 alerts
- Busiest day
- June 9, 20236 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, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 0 | 100% | 3 | 0% | |
| Flash flood warnings | 1 | 1 | 0% | 14 | 100% | 33 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Spokane, WA: tornado warnings | 0 | 2 | 0% | |||
| NWS Spokane, WA: severe thunderstorm warnings | 36 | 19 | 47% | 116 | 57% | 16 min |
| NWS Spokane, WA: flash flood warnings | 18 | 4 | 78% | 49 | 49% | 32 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 24, 12:52 PM PST | Winter Weather Advisory | OTX | 20 hr |
| Jan 26, 8:02 AM PST | Winter Weather Advisory | OTX | 33 hr |
| Jan 28, 12:09 PM PST | Wind Chill Advisory | OTX | 22 hr |
| Feb 12, 11:34 AM PST | Winter Weather Advisory | OTX | 50 hr |
| Feb 20, 1:32 AM PST | Wind Advisory | OTX | 31 hr |
| Feb 20, 2:16 PM PST | Winter Weather Advisory | OTX | 44 hr |
| Mar 1, 2:20 AM PST | Winter Weather Advisory | OTX | 65 hr |
| Mar 3, 2:22 PM PST | Winter Weather Advisory | OTX | 44 hr |
| Mar 14, 8:34 PM PDT | Winter Weather Advisory | OTX | 9 hr |
| Apr 18, 2:57 AM PDT | Freeze Warning | OTX | 30 hr |
| Apr 19, 10:45 AM PDT | Freeze Warning | OTX | 22 hr |
| May 3, 8:51 PM PDT | Flood Watch | OTX | 3 days |
| May 4, 4:59 PM PDT | Special Weather Statement | OTX | 31 min |
| May 4, 5:36 PM PDT | Special Weather Statement | OTX | 24 min |
| May 4, 6:33 PM PDT | Special Weather Statement | OTX | 27 min |
| May 7, 3:44 PM PDT | Special Weather Statement | OTX | 31 min |
| May 16, 2:26 AM PDT | Flood Watch | OTX | 18 hr |
| May 21, 2:03 PM PDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 21, 7:58 PM PDT | Areal Flood Advisory | OTX | 2 hr |
| Jun 7, 9:31 AM PDT | Flood Watch | OTX | 62 hr |
| Jun 9, 12:04 PM PDT | Areal Flood Advisory | OTX | 116 min |
| Jun 9, 2:07 PM PDT | Areal Flood Advisory | OTX | 36 min |
| Jun 9, 2:43 PM PDT | Flash Flood Warning | OTX | 110 min |
| Jun 9, 3:28 PM PDT | Areal Flood Advisory | OTX | 3 hr |
| Jun 9, 4:08 PM PDT | Severe Thunderstorm Warning | OTX | 25 min |
| Jun 9, 4:33 PM PDT | Areal Flood Advisory | OTX | 3 hr |
| Jun 13, 2:50 PM PDT | Special Weather Statement | OTX | 25 min |
| Jun 13, 3:03 PM PDT | Areal Flood Advisory | OTX | 117 min |
| Jun 13, 3:16 PM PDT | Special Weather Statement | OTX | 29 min |
| Jun 13, 3:23 PM PDT | Special Weather Statement | OTX | 37 min |
| Jun 13, 3:33 PM PDT | Areal Flood Advisory | OTX | 83 min |
| Jul 7, 2:33 AM PDT | Heat Advisory | OTX | 65 hr |
| Jul 13, 1:57 PM PDT | Heat Advisory | OTX | 3 days |
| Jul 19, 2:01 PM PDT | Heat Advisory | OTX | 54 hr |
| Jul 22, 12:24 PM PDT | Fire Weather Watch | MSO | 25 hr |
| Jul 23, 1:06 PM PDT | Red Flag Warning | MSO | 34 hr |
| Aug 5, 6:00 AM PDT | Flood Watch | OTX | 62 hr |
| Aug 11, 1:15 PM PDT | Excessive Heat Watch | OTX | 48 hr |
| Aug 13, 11:02 AM PDT | Excessive Heat Warning | OTX | 4 days |
| Aug 13, 1:34 PM PDT | Heat Advisory | OTX | 4 days |
| Aug 14, 11:27 AM PDT | Fire Weather Watch | MSO | 3 days |
| Aug 15, 11:26 AM PDT | Red Flag Warning | MSO | 3 days |
| Aug 19, 12:59 PM PDT | Flood Watch | OTX | 3 days |
| Aug 29, 1:31 PM PDT | Mesoscale Discussion | SPC | 119 min |
| Oct 25, 10:04 AM PDT | Winter Weather Advisory | OTX | 18 hr |
| Nov 6, 3:03 PM PST | Special Weather Statement | OTX | 27 min |
| Nov 16, 10:52 PM PST | Dense Fog Advisory | OTX | 13 hr |
| Nov 30, 4:10 AM PST | Winter Weather Advisory | OTX | 57 hr |
| Dec 8, 2:46 PM PST | Winter Weather Advisory | OTX | 46 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 | 1 |
| Special Weather Statement | 8 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flood Watch | 5 |
| Areal Flood Advisory | 7 |
| Winter | |
| Winter Weather Advisory | 10 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.