Alert archive / Idaho / Twin Falls County
Weather alerts in Twin Falls County, Idaho, 2008
68 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Twin Falls County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 68
- Warnings
- 20
- Watches
- 9
- Advisories
- 34
- Busiest month
- December13 alerts
- Busiest day
- July 22, 20088 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 1 tornado warnings covering Twin Falls County in 2008 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 37 minutes after it went out.
Twin Falls County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 1 | 100% | 37 min |
| Severe thunderstorm warnings | 8 | 2 | 75% | 1 | 0% | |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boise, ID: tornado warnings | 1 | 1 | 0% | 1 | 100% | 37 min |
| NWS Boise, ID: severe thunderstorm warnings | 21 | 9 | 57% | 29 | 62% | 16 min |
| NWS Boise, ID: flash flood warnings | 2 | 1 | 50% | 2 | 100% | 55 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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 3, 2:21 PM MST | High Wind Warning | BOI | 31 hr |
| Jan 3, 2:21 PM MST | Wind Advisory | BOI | 30 hr |
| Jan 6, 12:04 PM MST | Winter Storm Watch | BOI | 34 hr |
| Jan 7, 9:50 PM MST | Snow Advisory | BOI | 25 hr |
| Jan 12, 8:59 PM MST | Dense Fog Advisory | BOI | 17 hr |
| Jan 13, 9:09 PM MST | Dense Fog Advisory | BOI | 10 hr |
| Jan 14, 1:05 PM MST | Wind Advisory | BOI | 28 hr |
| Jan 23, 2:30 AM MST | Wind Chill Warning | BOI | 33 hr |
| Jan 25, 3:30 PM MST | Snow Advisory | BOI | 68 hr |
| Jan 27, 4:53 AM MST | Snow and Blowing Snow Advisory | BOI | 30 hr |
| Jan 28, 2:36 PM MST | Snow Advisory | BOI | 32 hr |
| Jan 30, 11:27 AM MST | Snow and Blowing Snow Advisory | BOI | 36 hr |
| Feb 1, 9:32 PM MST | Snow and Blowing Snow Advisory | BOI | 40 hr |
| Feb 6, 10:13 AM MST | Snow and Blowing Snow Advisory | BOI | 23 hr |
| Feb 6, 10:13 AM MST | Snow Advisory | BOI | 23 hr |
| Feb 6, 2:48 PM MST | Wind Advisory | BOI | 27 hr |
| Feb 13, 10:39 AM MST | Wind Advisory | BOI | 7 hr |
| Mar 1, 3:31 AM MST | Wind Advisory | BOI | 16 hr |
| Apr 4, 1:26 PM MDT | Wind Advisory | BOI | 9 hr |
| Apr 13, 3:12 PM MDT | Wind Advisory | BOI | 31 hr |
| Apr 14, 8:35 PM MDT | Dust Storm Warning | BOI | 101 min |
| Apr 14, 8:35 PM MDT | High Wind Warning | BOI | 101 min |
| Apr 14, 10:16 PM MDT | Wind Advisory | BOI | 2 hr |
| Apr 19, 1:59 PM MDT | Wind Advisory | BOI | 25 hr |
| Apr 28, 1:05 PM MDT | Wind Advisory | BOI | 32 hr |
| Apr 29, 3:12 PM MDT | Freeze Watch | BOI | 11 hr |
| Apr 30, 2:22 AM MDT | Freeze Warning | BOI | 31 hr |
| Apr 30, 9:28 AM MDT | Wind Advisory | BOI | 11 hr |
| May 1, 3:37 PM MDT | Freeze Warning | BOI | 17 hr |
| May 13, 1:56 PM MDT | Wind Advisory | BOI | 30 hr |
| May 20, 2:46 AM MDT | Wind Advisory | BOI | 41 hr |
| May 20, 5:56 PM MDT | High Wind Warning | BOI | 4 hr |
| May 28, 11:32 AM MDT | Mesoscale Discussion | SPC | 88 min |
| May 28, 12:35 PM MDT | Severe Thunderstorm Warning | BOI | 40 min |
| Jun 9, 1:47 PM MDT | Wind Advisory | BOI | 26 hr |
| Jun 30, 3:05 PM MDT | Mesoscale Discussion | SPC | 85 min |
| Jul 22, 12:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Jul 22, 1:00 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 22, 1:41 PM MDT | Severe Thunderstorm Warning | BOI | 64 min |
| Jul 22, 1:53 PM MDT | Tornado Warning | BOI | 52 min |
| Jul 22, 2:06 PM MDT | Severe Thunderstorm Warning | BOI | 39 min |
| Jul 22, 2:30 PM MDT | Severe Thunderstorm Warning | BOI | 45 min |
| Jul 22, 2:42 PM MDT | Severe Thunderstorm Warning | BOI | 59 min |
| Jul 22, 3:13 PM MDT | Severe Thunderstorm Warning | BOI | 45 min |
| Aug 8, 1:55 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Aug 8, 4:03 PM MDT | Severe Thunderstorm Warning | BOI | 57 min |
| Aug 8, 4:21 PM MDT | Severe Thunderstorm Warning | BOI | 54 min |
| Aug 25, 11:07 AM MDT | Wind Advisory | BOI | 13 hr |
| Oct 7, 3:05 PM MDT | Freeze Watch | BOI | 19 hr |
| Oct 8, 10:09 AM MDT | Freeze Warning | BOI | 23 hr |
| Oct 9, 3:11 PM MDT | Winter Storm Watch | BOI | 23 hr |
| Oct 10, 2:20 PM MDT | Winter Storm Warning | BOI | 40 hr |
| Nov 4, 2:21 AM MST | Wind Advisory | BOI | 15 hr |
| Nov 12, 2:39 PM MST | Wind Advisory | BOI | 26 hr |
| Nov 22, 10:00 PM MST | Dense Fog Advisory | BOI | 15 hr |
| Dec 1, 3:03 PM MST | Wind Advisory | BOI | 26 hr |
| Dec 11, 3:50 AM MST | Winter Storm Watch | BOI | 24 hr |
| Dec 12, 3:38 AM MST | Wind Advisory | BOI | 25 hr |
| Dec 12, 4:12 AM MST | Winter Weather Advisory | BOI | 25 hr |
| Dec 15, 10:45 AM MST | Winter Weather Advisory | BOI | 15 hr |
| Dec 16, 2:40 PM MST | Winter Storm Watch | BOI | 25 hr |
| Dec 17, 3:45 PM MST | Winter Weather Advisory | BOI | 42 hr |
| Dec 19, 1:32 PM MST | Winter Storm Watch | BOI | 24 hr |
| Dec 20, 1:09 PM MST | Winter Storm Warning | BOI | 46 hr |
| Dec 21, 4:47 PM MST | Mesoscale Discussion | SPC | 4 hr |
| Dec 23, 3:46 AM MST | Winter Storm Watch | BOI | 12 hr |
| Dec 23, 3:43 PM MST | Winter Storm Warning | BOI | 46 hr |
| Dec 29, 2:43 PM MST | Wind Advisory | BOI | 5 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 | 8 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 5 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 6 |
| Snow Advisory | 4 |
| Snow and Blowing Snow Advisory | 4 |
| Winter Weather Advisory | 3 |
| Cold | |
| Freeze Warning | 3 |
| Wind Chill Warning | 1 |
| Freeze Watch | 2 |
| Wind and dust | |
| Dust Storm Warning | 1 |
| High Wind Warning | 3 |
| Wind Advisory | 20 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20072009
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.