Alert archive / Idaho / Nez Perce County
Weather alerts in Nez Perce County, Idaho, 2017
38 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 38
- Warnings
- 6
- Watches
- 7
- Advisories
- 21
- Busiest month
- January8 alerts
- Busiest day
- March 16, 20172 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, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 0 | 100% | 1 | 0% | |
| Flash flood warnings | 0 | 1 | 0% |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Spokane, WA: severe thunderstorm warnings | 5 | 1 | 80% | 15 | 7% | 0 min |
| NWS Spokane, WA: flash flood warnings | 1 | 0 | 100% | 35 | 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 7, 3:37 AM PST | Winter Weather Advisory | OTX | 52 hr |
| Jan 13, 9:49 AM PST | Air Stagnation Advisory | OTX | 4 days |
| Jan 16, 3:32 PM PST | Freezing Rain Advisory | OTX | 42 hr |
| Jan 17, 12:51 PM PST | Flood Watch | OTX | 26 hr |
| Jan 18, 2:37 PM PST | Areal Flood Advisory | OTX | 36 hr |
| Jan 26, 2:45 PM PST | Air Stagnation Advisory | OTX | 4 days |
| Jan 29, 3:14 PM PST | Winter Storm Watch | OTX | 20 hr |
| Jan 30, 11:35 AM PST | Winter Weather Advisory | OTX | 32 hr |
| Feb 8, 2:15 PM PST | Flood Watch | OTX | 5 days |
| Feb 21, 11:54 AM PST | Winter Weather Advisory | OTX | 22 hr |
| Feb 25, 2:00 PM PST | Winter Weather Advisory | OTX | 68 hr |
| Mar 4, 12:03 PM PST | Winter Weather Advisory | OTX | 24 hr |
| Mar 13, 1:47 PM PDT | Flood Watch | OTX | 70 hr |
| Mar 16, 12:16 PM PDT | River Flood Watch | OTX | 24 hr |
| Mar 16, 12:20 PM PDT | Areal Flood Warning | OTX | 72 hr |
| Mar 28, 12:37 PM PDT | Flood Watch | OTX | 46 hr |
| Apr 7, 12:00 PM PDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 8, 8:18 AM PDT | Winter Weather Advisory | OTX | 6 hr |
| May 5, 2:16 PM PDT | Mesoscale Discussion | SPC | 119 min |
| May 5, 4:13 PM PDT | Severe Thunderstorm Warning | OTX | 47 min |
| Jun 26, 1:12 PM PDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 6, 12:20 PM PDT | Heat Advisory | OTX | 32 hr |
| Aug 1, 2:15 PM PDT | Heat Advisory | OTX | 3 days |
| Aug 11, 12:03 PM PDT | Red Flag Warning | MSO | 56 hr |
| Aug 24, 7:59 AM PDT | Red Flag Warning | MSO | 14 hr |
| Aug 29, 11:49 AM PDT | Red Flag Warning | MSO | 56 hr |
| Aug 30, 4:16 PM PDT | Special Weather Statement | OTX | 59 min |
| Sep 7, 12:48 PM PDT | Fire Weather Watch | MSO | 22 hr |
| Nov 4, 3:05 AM PDT | Winter Weather Advisory | OTX | 56 hr |
| Nov 22, 2:48 PM PST | Wind Advisory | OTX | 27 hr |
| Dec 2, 3:48 AM PST | Winter Weather Advisory | OTX | 35 hr |
| Dec 4, 2:05 PM PST | Air Stagnation Advisory | OTX | 11 days |
| Dec 14, 2:58 PM PST | Winter Weather Advisory | OTX | 40 hr |
| Dec 21, 1:15 PM PST | Winter Weather Advisory | OTX | 33 hr |
| Dec 23, 2:34 PM PST | Winter Weather Advisory | OTX | 56 hr |
| Dec 24, 3:28 AM PST | Winter Storm Warning | OTX | 37 hr |
| Dec 27, 2:55 PM PST | Winter Weather Advisory | OTX | 56 hr |
| Dec 29, 9:53 AM PST | Areal Flood Advisory | OTX | 24 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 | |
| Areal Flood Warning | 1 |
| Flood Watch | 4 |
| River Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 12 |
| Heat | |
| Heat Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Air Stagnation Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.