Alert archive / Idaho / Elmore County
Weather alerts in Elmore County, Idaho, 2015
74 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Elmore County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 74
- Warnings
- 18
- Watches
- 14
- Advisories
- 33
- Busiest month
- August21 alerts
- Busiest day
- August 11, 20154 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Elmore County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 5 | 2 | 60% | 0 | ||
| Flash flood warnings | 3 | 1 | 67% | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boise, ID: severe thunderstorm warnings | 22 | 5 | 77% | 15 | 40% | 19 min |
| NWS Boise, ID: flash flood warnings | 6 | 1 | 83% | 1 | 100% | 131 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, 2:14 PM MST | Winter Weather Advisory | BOI | 45 hr |
| Jan 4, 2:30 PM MST | Winter Weather Advisory | BOI | 24 hr |
| Jan 5, 11:17 PM MST | Dense Fog Advisory | BOI | 10 hr |
| Jan 6, 2:03 PM MST | Dense Fog Advisory | BOI | 59 hr |
| Jan 11, 1:22 PM MST | Winter Weather Advisory | BOI | 25 hr |
| Jan 12, 8:34 PM MST | Dense Fog Advisory | BOI | 14 hr |
| Jan 15, 2:55 PM MST | Winter Weather Advisory | BOI | 23 hr |
| Jan 16, 6:57 PM MST | Dense Fog Advisory | BOI | 13 hr |
| Jan 18, 10:30 PM MST | Dense Fog Advisory | BOI | 16 hr |
| Jan 19, 2:57 PM MST | Dense Fog Advisory | BOI | 23 hr |
| Jan 20, 3:07 PM MST | Dense Fog Advisory | BOI | 16 hr |
| Jan 21, 2:24 PM MST | Dense Fog Advisory | BOI | 7 hr |
| Jan 25, 9:11 PM MST | Dense Fog Advisory | BOI | 14 hr |
| Jan 27, 1:40 AM MST | Dense Fog Advisory | BOI | 9 hr |
| Jan 28, 2:58 AM MST | Dense Fog Advisory | BOI | 10 hr |
| Feb 3, 5:51 AM MST | Dense Fog Advisory | BOI | 3 hr |
| Feb 6, 10:31 AM MST | Flood Watch | BOI | 40 hr |
| Mar 24, 2:35 AM MDT | Winter Weather Advisory | BOI | 9 hr |
| Mar 24, 2:45 AM MDT | Wind Advisory | BOI | 15 hr |
| Mar 28, 3:01 AM MDT | Wind Advisory | BOI | 15 hr |
| Mar 31, 2:35 AM MDT | Wind Advisory | BOI | 18 hr |
| Mar 31, 4:14 PM MDT | Special Weather Statement | BOI | 46 min |
| Apr 12, 2:05 PM MDT | Wind Advisory | BOI | 55 hr |
| May 11, 4:33 PM MDT | Special Weather Statement | BOI | 42 min |
| May 12, 12:53 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 20, 3:13 AM MDT | Flash Flood Watch | BOI | 7 hr |
| May 21, 12:47 PM MDT | Special Weather Statement | BOI | 43 min |
| May 24, 5:40 PM MDT | Severe Thunderstorm Warning | BOI | 48 min |
| Jun 1, 8:47 AM MDT | Special Weather Statement | BOI | 43 min |
| Jun 1, 8:58 PM MDT | Special Weather Statement | BOI | 47 min |
| Jun 9, 5:18 PM MDT | Areal Flood Advisory | BOI | 3 hr |
| Jun 25, 3:07 PM MDT | Heat Advisory | BOI | 3 days |
| Jun 28, 6:08 PM MDT | Severe Thunderstorm Warning | BOI | 37 min |
| Jul 10, 2:44 PM MDT | Flash Flood Watch | BOI | 9 hr |
| Aug 4, 1:11 AM MDT | Special Weather Statement | BOI | 94 min |
| Aug 4, 8:57 AM MDT | Red Flag Warning | BOI | 34 hr |
| Aug 5, 2:49 PM MDT | Special Weather Statement | BOI | 41 min |
| Aug 6, 3:16 PM MDT | Fire Weather Watch | BOI | 17 hr |
| Aug 7, 8:27 AM MDT | Red Flag Warning | BOI | 12 hr |
| Aug 9, 10:37 AM MDT | Fire Weather Watch | BOI | 4 hr |
| Aug 9, 2:36 PM MDT | Red Flag Warning | BOI | 30 hr |
| Aug 11, 8:29 AM MDT | Fire Weather Watch | BOI | 6 hr |
| Aug 11, 2:38 PM MDT | Red Flag Warning | BOI | 12 hr |
| Aug 11, 5:17 PM MDT | Severe Thunderstorm Warning | BOI | 43 min |
| Aug 11, 5:58 PM MDT | Severe Thunderstorm Warning | BOI | 24 min |
| Aug 12, 3:32 PM MDT | Fire Weather Watch | BOI | 17 hr |
| Aug 13, 8:38 AM MDT | Fire Weather Watch | BOI | 7 hr |
| Aug 13, 8:38 AM MDT | Red Flag Warning | BOI | 20 hr |
| Aug 14, 4:20 AM MDT | Red Flag Warning | BOI | 20 hr |
| Aug 16, 8:02 AM MDT | Fire Weather Watch | BOI | 7 hr |
| Aug 16, 2:42 PM MDT | Red Flag Warning | BOI | 30 hr |
| Aug 20, 8:39 AM MDT | Fire Weather Watch | BOI | 24 hr |
| Aug 20, 2:53 PM MDT | Red Flag Warning | BOI | 30 hr |
| Aug 26, 6:41 PM MDT | Special Weather Statement | BOI | 64 min |
| Aug 26, 7:49 PM MDT | Flash Flood Warning | BOI | 3 hr |
| Sep 16, 1:29 AM MDT | Flash Flood Warning | BOI | 4 hr |
| Sep 16, 1:48 AM MDT | Flash Flood Warning | BOI | 4 hr |
| Nov 15, 12:43 PM MST | Wind Advisory | BOI | 29 hr |
| Nov 23, 2:22 PM MST | Winter Storm Watch | BOI | 22 hr |
| Nov 24, 11:58 AM MST | Winter Weather Advisory | BOI | 47 hr |
| Dec 3, 11:50 AM MST | Wind Advisory | BOI | 5 hr |
| Dec 8, 1:02 PM MST | Winter Storm Watch | BOI | 15 hr |
| Dec 9, 4:00 AM MST | Winter Weather Advisory | BOI | 40 hr |
| Dec 11, 1:29 PM MST | Winter Storm Watch | BOI | 15 hr |
| Dec 12, 4:28 AM MST | Winter Storm Warning | BOI | 43 hr |
| Dec 12, 4:28 AM MST | Winter Weather Advisory | BOI | 61 hr |
| Dec 16, 2:17 PM MST | Winter Weather Advisory | BOI | 37 hr |
| Dec 19, 2:52 PM MST | Winter Storm Watch | BOI | 24 hr |
| Dec 19, 7:55 PM MST | Dense Fog Advisory | BOI | 15 hr |
| Dec 20, 2:48 AM MST | Winter Weather Advisory | BOI | 4 days |
| Dec 20, 3:13 PM MST | Winter Storm Warning | BOI | 24 hr |
| Dec 21, 7:46 PM MST | Severe Thunderstorm Warning | BOI | 18 min |
| Dec 24, 6:24 PM MST | Dense Fog Advisory | BOI | 17 hr |
| Dec 25, 7:34 PM MST | Dense Fog Advisory | BOI | 15 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 | 5 |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 8 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 10 |
| Heat | |
| Heat Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 8 |
| Fire Weather Watch | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 15 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.