Alert archive / Idaho / Clearwater County
Weather alerts in Clearwater County, Idaho, 2012
96 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Clearwater County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 96
- Warnings
- 24
- Watches
- 10
- Advisories
- 42
- Busiest month
- July17 alerts
- Busiest day
- June 5, 20126 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Clearwater County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 4 | 43% | 9 | 67% | 16 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Missoula, MT: severe thunderstorm warnings | 57 | 25 | 56% | 71 | 49% | 20 min |
| NWS Missoula, MT: flash flood warnings | 6 | 0 | 100% | 6 | 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, 1:28 AM PST | Winter Weather Advisory | MSO | 7 hr |
| Jan 9, 9:34 AM PST | Winter Weather Advisory | MSO | 25 hr |
| Jan 13, 1:56 PM PST | Winter Weather Advisory | MSO | 62 hr |
| Jan 14, 2:10 AM PST | Wind Advisory | MSO | 18 hr |
| Jan 15, 1:46 PM PST | Winter Storm Watch | MSO | 48 hr |
| Jan 16, 3:50 AM PST | Winter Weather Advisory | MSO | 6 hr |
| Jan 16, 2:30 PM PST | Winter Storm Warning | MSO | 4 days |
| Jan 17, 3:48 PM PST | Wind Advisory | MSO | 2 hr |
| Jan 20, 8:18 AM PST | Wind Advisory | MSO | 21 hr |
| Jan 22, 1:19 PM PST | Winter Weather Advisory | MSO | 21 hr |
| Jan 24, 1:03 PM PST | Wind Advisory | MSO | 27 hr |
| Jan 29, 9:27 AM PST | Wind Advisory | MSO | 10 hr |
| Feb 17, 2:36 AM PST | Winter Weather Advisory | MSO | 55 hr |
| Feb 21, 2:47 AM PST | Wind Advisory | MSO | 43 hr |
| Feb 24, 1:18 PM PST | Winter Weather Advisory | MSO | 44 hr |
| Feb 28, 10:44 AM PST | Winter Weather Advisory | MSO | 59 hr |
| Mar 2, 10:20 AM PST | Winter Weather Advisory | MSO | 26 hr |
| Mar 2, 10:20 AM PST | Freezing Rain Advisory | MSO | 19 hr |
| Mar 5, 12:30 PM PST | Winter Weather Advisory | MSO | 23 hr |
| Mar 12, 2:32 AM PDT | Wind Advisory | MSO | 9 hr |
| Mar 12, 11:04 AM PDT | Winter Weather Advisory | MSO | 45 hr |
| Mar 12, 11:22 AM PDT | High Wind Warning | MSO | 32 hr |
| Mar 12, 11:22 AM PDT | Wind Advisory | MSO | 30 hr |
| Mar 14, 1:29 PM PDT | Winter Weather Advisory | MSO | 49 hr |
| Mar 14, 7:21 PM PDT | Wind Advisory | MSO | 26 hr |
| Mar 19, 1:54 PM PDT | Winter Weather Advisory | MSO | 66 hr |
| Mar 20, 7:41 AM PDT | Wind Advisory | MSO | 11 hr |
| Mar 20, 1:25 PM PDT | Winter Storm Warning | MSO | 43 hr |
| Mar 29, 8:11 AM PDT | Areal Flood Advisory | MSO | 47 hr |
| Mar 29, 9:02 AM PDT | Wind Advisory | MSO | 10 hr |
| Mar 29, 7:30 PM PDT | Wind Advisory | MSO | 16 hr |
| Apr 3, 3:25 AM PDT | Winter Weather Advisory | MSO | 39 hr |
| Apr 23, 1:41 PM PDT | Flood Watch | MSO | 5 days |
| Apr 24, 11:04 AM PDT | Areal Flood Warning | MSO | 24 hr |
| Apr 24, 11:05 AM PDT | Areal Flood Warning | MSO | 102 min |
| Apr 24, 12:18 PM PDT | Mesoscale Discussion | SPC | 87 min |
| Apr 24, 4:27 PM PDT | Special Weather Statement | MSO | 48 min |
| Apr 24, 5:31 PM PDT | Special Weather Statement | MSO | 44 min |
| Apr 24, 7:46 PM PDT | Severe Thunderstorm Warning | MSO | 54 min |
| 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, 3:45 PM PDT | Mesoscale Discussion | SPC | 90 min |
| Jun 4, 6:30 PM PDT | Special Weather Statement | MSO | 45 min |
| Jun 4, 6:42 PM PDT | Mesoscale Discussion | SPC | 93 min |
| Jun 4, 7:47 PM PDT | Severe Thunderstorm Warning | MSO | 43 min |
| Jun 4, 8:29 PM PDT | Severe Thunderstorm Warning | MSO | 46 min |
| Jun 4, 9:08 PM PDT | Mesoscale Discussion | SPC | 67 min |
| Jun 4, 9:17 PM PDT | Severe Thunderstorm Warning | MSO | 43 min |
| Jun 23, 1:49 PM PDT | Mesoscale Discussion | SPC | 116 min |
| Jun 30, 7:33 PM PDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 8:07 PM PDT | Severe Thunderstorm Warning | MSO | 39 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 16, 2:04 PM PDT | Flash Flood Watch | MSO | 5 hr |
| Jul 16, 3:29 PM PDT | Special Weather Statement | MSO | 46 min |
| Jul 17, 7:57 PM PDT | Special Weather Statement | MSO | 48 min |
| Jul 20, 11:38 AM PDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 20, 1:12 PM PDT | Special Weather Statement | MSO | 48 min |
| Jul 20, 1:29 PM PDT | Mesoscale Discussion | SPC | 91 min |
| Jul 20, 1:58 PM PDT | Severe Thunderstorm Warning | MSO | 32 min |
| Jul 20, 2:26 PM PDT | Severe Thunderstorm Warning | MSO | 49 min |
| Jul 20, 5:21 PM PDT | Mesoscale Discussion | SPC | 84 min |
| Jul 22, 4:06 PM PDT | Mesoscale Discussion | SPC | 54 min |
| Aug 5, 1:44 PM PDT | Red Flag Warning | MSO | 29 hr |
| Aug 7, 1:00 PM PDT | Red Flag Warning | MSO | 31 hr |
| Aug 10, 2:38 AM PDT | Red Flag Warning | MSO | 15 hr |
| Aug 17, 1:13 PM PDT | Fire Weather Watch | MSO | 37 hr |
| Aug 19, 2:39 AM PDT | Red Flag Warning | MSO | 17 hr |
| Aug 21, 1:45 PM PDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 28, 2:26 AM PDT | Red Flag Warning | MSO | 66 hr |
| Sep 8, 7:34 AM PDT | Red Flag Warning | MSO | 63 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 |
| Oct 14, 6:28 PM PDT | Wind Advisory | MSO | 46 hr |
| Oct 21, 1:36 PM PDT | Winter Storm Watch | MSO | 12 hr |
| Oct 22, 1:34 AM PDT | Winter Storm Warning | MSO | 25 hr |
| Oct 22, 1:34 AM PDT | Winter Weather Advisory | MSO | 48 hr |
| Oct 26, 1:09 PM PDT | Winter Weather Advisory | MSO | 22 hr |
| Nov 7, 11:04 AM PST | Winter Weather Advisory | MSO | 53 hr |
| Nov 18, 7:40 AM PST | Wind Advisory | MSO | 25 hr |
| Nov 19, 8:31 AM PST | High Wind Warning | MSO | 25 hr |
| Nov 20, 1:06 PM PST | Winter Weather Advisory | MSO | 39 hr |
| Nov 30, 12:10 PM PST | Winter Storm Watch | MSO | 23 hr |
| Dec 1, 11:07 AM PST | Winter Storm Warning | MSO | 31 hr |
| Dec 1, 1:05 PM PST | Wind Advisory | MSO | 22 hr |
| Dec 4, 6:00 AM PST | Wind Advisory | MSO | 7 hr |
| Dec 6, 9:22 AM PST | Winter Weather Advisory | MSO | 52 hr |
| Dec 9, 1:16 PM PST | Winter Weather Advisory | MSO | 19 hr |
| Dec 11, 12:51 PM PST | Winter Weather Advisory | MSO | 21 hr |
| Dec 15, 1:57 PM PST | Winter Weather Advisory | MSO | 60 hr |
| Dec 18, 1:39 PM PST | Winter Weather Advisory | MSO | 44 hr |
| Dec 23, 1:08 PM PST | Winter Weather Advisory | MSO | 33 hr |
| Dec 23, 4:21 PM PST | Winter Storm Warning | MSO | 30 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
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.