Alert archive / Idaho / Nez Perce County
Weather alerts in Nez Perce County, Idaho, 2012
72 weather alerts in 2012, 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 2012. Tap one for its archive.
- Alerts
- 72
- Warnings
- 25
- Watches
- 9
- Advisories
- 22
- Busiest month
- July23 alerts
- Busiest day
- July 20, 20129 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, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 8 | 33% | 10 | 70% | 11 min |
| Flash flood warnings | 0 | 2 | 0% |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Spokane, WA: severe thunderstorm warnings | 48 | 36 | 25% | 83 | 71% | 19 min |
| NWS Spokane, WA: flash flood warnings | 6 | 5 | 17% | 18 | 22% | 16 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 15, 3:50 AM PST | Winter Weather Advisory | OTX | 30 hr |
| Jan 15, 3:23 PM PST | Winter Storm Watch | OTX | 55 hr |
| Jan 16, 3:30 PM PST | Winter Storm Warning | OTX | 4 days |
| Jan 24, 2:59 PM PST | Wind Advisory | OTX | 21 hr |
| Feb 20, 2:46 PM PST | High Wind Watch | OTX | 24 hr |
| Feb 21, 4:40 AM PST | High Wind Warning | OTX | 38 hr |
| Feb 21, 3:04 PM PST | Wind Advisory | OTX | 27 hr |
| Feb 24, 9:59 AM PST | Wind Advisory | OTX | 32 hr |
| Mar 12, 3:15 PM PDT | Wind Advisory | OTX | 28 hr |
| Mar 19, 2:47 AM PDT | Winter Weather Advisory | OTX | 60 hr |
| Mar 26, 4:37 AM PDT | Areal Flood Warning | OTX | 73 days |
| Mar 29, 1:13 PM PDT | Areal Flood Advisory | OTX | 22 hr |
| Mar 30, 11:22 AM PDT | Areal Flood Warning | OTX | 48 hr |
| Mar 30, 11:42 AM PDT | Areal Flood Warning | OTX | 47 hr |
| Apr 3, 4:28 AM PDT | Winter Weather Advisory | OTX | 39 hr |
| Apr 4, 4:15 AM PDT | Winter Weather Advisory | OTX | 8 hr |
| Apr 24, 12:18 PM PDT | Mesoscale Discussion | SPC | 87 min |
| Apr 24, 3:07 PM PDT | Severe Thunderstorm Warning | OTX | 37 min |
| May 10, 6:03 PM PDT | Freeze Warning | OTX | 14 hr |
| Jun 4, 11:49 AM PDT | Mesoscale Discussion | SPC | 86 min |
| Jun 4, 12:46 PM PDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 4, 1:34 PM PDT | Flash Flood Watch | OTX | 14 hr |
| Jun 4, 3:45 PM PDT | Mesoscale Discussion | SPC | 90 min |
| Jun 4, 6:42 PM PDT | Mesoscale Discussion | SPC | 93 min |
| Jun 12, 1:32 PM PDT | Special Weather Statement | OTX | 43 min |
| Jun 12, 1:52 PM PDT | Severe Thunderstorm Warning | OTX | 59 min |
| Jun 23, 6:31 PM PDT | Severe Thunderstorm Warning | OTX | 44 min |
| Jun 23, 6:52 PM PDT | Severe Thunderstorm Warning | OTX | 20 min |
| Jun 30, 7:19 PM PDT | Severe Thunderstorm Warning | OTX | 41 min |
| Jun 30, 7:33 PM PDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 7:59 PM PDT | Severe Thunderstorm Warning | OTX | 46 min |
| Jul 9, 9:05 AM PDT | Red Flag Warning | MSO | 12 hr |
| Jul 12, 10:50 PM PDT | Mesoscale Discussion | SPC | 115 min |
| Jul 14, 1:27 PM PDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 14, 5:23 PM PDT | Mesoscale Discussion | SPC | 67 min |
| Jul 14, 9:33 PM PDT | Mesoscale Discussion | SPC | 57 min |
| Jul 15, 2:45 PM PDT | Special Weather Statement | OTX | 30 min |
| Jul 15, 3:15 PM PDT | Special Weather Statement | OTX | 45 min |
| Jul 17, 3:51 PM PDT | Mesoscale Discussion | SPC | 54 min |
| Jul 17, 6:32 PM PDT | Severe Thunderstorm Warning | OTX | 43 min |
| Jul 17, 7:14 PM PDT | Severe Thunderstorm Warning | OTX | 45 min |
| Jul 18, 5:23 PM PDT | Mesoscale Discussion | SPC | 67 min |
| Jul 19, 7:09 PM PDT | Special Weather Statement | OTX | 51 min |
| Jul 20, 9:32 AM PDT | Mesoscale Discussion | SPC | 88 min |
| Jul 20, 11:38 AM PDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 20, 12:39 PM PDT | Severe Thunderstorm Warning | OTX | 51 min |
| Jul 20, 12:57 PM PDT | Severe Thunderstorm Warning | OTX | 48 min |
| Jul 20, 1:04 PM PDT | Areal Flood Advisory | OTX | 4 hr |
| Jul 20, 1:18 PM PDT | Severe Thunderstorm Warning | OTX | 42 min |
| Jul 20, 1:29 PM PDT | Mesoscale Discussion | SPC | 91 min |
| Jul 20, 2:07 PM PDT | Severe Thunderstorm Warning | OTX | 38 min |
| Aug 5, 1:44 PM PDT | Red Flag Warning | MSO | 29 hr |
| Aug 17, 1:13 PM PDT | Fire Weather Watch | MSO | 37 hr |
| Sep 8, 7:34 AM PDT | Red Flag Warning | MSO | 63 hr |
| Sep 10, 3:00 PM PDT | Freeze Warning | OTX | 42 hr |
| Sep 13, 2:31 AM PDT | Fire Weather Watch | MSO | 11 hr |
| Sep 13, 1:07 PM PDT | Red Flag Warning | MSO | 31 hr |
| Sep 15, 9:37 AM PDT | Air Stagnation Advisory | OTX | 5 days |
| Oct 4, 3:21 AM PDT | Freeze Warning | OTX | 30 hr |
| Oct 5, 2:32 PM PDT | Freeze Warning | OTX | 18 hr |
| Oct 15, 2:19 AM PDT | Wind Advisory | OTX | 42 hr |
| Oct 19, 3:17 PM PDT | Wind Advisory | OTX | 27 hr |
| Oct 29, 9:28 AM PDT | Areal Flood Advisory | OTX | 3 hr |
| Nov 7, 3:51 AM PST | Winter Storm Watch | OTX | 24 hr |
| Nov 7, 2:37 PM PST | Winter Weather Advisory | OTX | 49 hr |
| Nov 19, 3:03 AM PST | Wind Advisory | OTX | 19 hr |
| Dec 5, 10:42 PM PST | Winter Weather Advisory | OTX | 52 hr |
| Dec 10, 8:55 PM PST | Dense Fog Advisory | OTX | 12 hr |
| Dec 11, 2:48 AM PST | Winter Weather Advisory | OTX | 33 hr |
| Dec 16, 3:10 AM PST | Wind Advisory | OTX | 39 hr |
| Dec 19, 3:14 PM PST | Wind Advisory | OTX | 22 hr |
| Dec 23, 4:55 AM PST | Winter Weather Advisory | OTX | 33 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 | 12 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 12 |
| Special Weather Statement | 4 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 8 |
| Cold | |
| Freeze Warning | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 9 |
| Fire | |
| Red Flag Warning | 4 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Air Stagnation Advisory | 1 |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.