Alert archive / Idaho / Elmore County
Weather alerts in Elmore County, Idaho, 2023
109 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 109
- Warnings
- 19
- Watches
- 10
- Advisories
- 53
- Busiest month
- August26 alerts
- Busiest day
- June 7, 20237 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, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 6 | 1 | 83% | 2 | 100% | 19 min |
| Flash flood warnings | 1 | 1 | 0% | 1 | 100% | 124 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boise, ID: tornado warnings | 0 | 3 | 0% | |||
| NWS Boise, ID: severe thunderstorm warnings | 40 | 8 | 80% | 40 | 45% | 11 min |
| NWS Boise, ID: flash flood warnings | 13 | 3 | 77% | 4 | 75% | 62 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 |
|---|---|---|---|
| Dec 31, 6:51 PM MST | Dense Fog Advisory | BOI | 11 hr |
| Jan 6, 8:23 AM MST | Dense Fog Advisory | BOI | 3 hr |
| Jan 8, 1:30 PM MST | Winter Weather Advisory | BOI | 30 hr |
| Jan 10, 2:48 AM MST | Dense Fog Advisory | BOI | 10 hr |
| Jan 11, 2:32 AM MST | Dense Fog Advisory | BOI | 9 hr |
| Jan 17, 2:44 PM MST | Winter Weather Advisory | BOI | 56 hr |
| Jan 30, 12:32 PM MST | Air Stagnation Advisory | BOI | 4 days |
| Feb 13, 2:45 AM MST | Wind Advisory | BOI | 28 hr |
| Feb 19, 2:18 PM MST | Winter Storm Watch | BOI | 13 hr |
| Feb 19, 2:26 PM MST | Wind Advisory | BOI | 47 hr |
| Feb 20, 3:18 AM MST | Winter Storm Warning | BOI | 35 hr |
| Feb 20, 3:18 AM MST | Winter Weather Advisory | BOI | 38 hr |
| Feb 26, 2:07 AM MST | Winter Weather Advisory | BOI | 18 hr |
| Feb 28, 2:15 PM MST | Winter Storm Warning | BOI | 15 hr |
| Feb 28, 2:15 PM MST | Winter Weather Advisory | BOI | 15 hr |
| Mar 3, 2:51 PM MST | Winter Weather Advisory | BOI | 38 hr |
| Mar 7, 7:08 PM MST | Special Weather Statement | BOI | 52 min |
| Mar 8, 1:06 PM MST | Winter Storm Watch | BOI | 14 hr |
| Mar 8, 1:12 PM MST | Wind Advisory | BOI | 54 hr |
| Mar 8, 6:35 PM MST | Snow Squall Warning | BOI | 40 min |
| Mar 8, 7:13 PM MST | Snow Squall Warning | BOI | 47 min |
| Mar 9, 3:15 AM MST | Winter Storm Warning | BOI | 35 hr |
| Mar 14, 2:47 AM MDT | Wind Advisory | BOI | 35 hr |
| Mar 14, 9:56 AM MDT | Winter Weather Advisory | BOI | 23 hr |
| Mar 23, 3:06 AM MDT | Wind Advisory | BOI | 41 hr |
| Mar 30, 5:24 AM MDT | Winter Weather Advisory | BOI | 13 hr |
| Apr 3, 2:56 AM MDT | Wind Advisory | BOI | 39 hr |
| Apr 18, 2:58 AM MDT | Wind Advisory | BOI | 17 hr |
| Apr 23, 2:33 PM MDT | Wind Advisory | BOI | 32 hr |
| Apr 26, 1:43 PM MDT | Wind Advisory | BOI | 31 hr |
| May 1, 9:31 AM MDT | River Flood Watch | BOI | 34 hr |
| May 1, 11:42 AM MDT | Areal Flood Advisory | BOI | 8 days |
| May 8, 7:29 PM MDT | Special Weather Statement | BOI | 46 min |
| May 8, 8:13 PM MDT | Special Weather Statement | BOI | 47 min |
| May 13, 3:04 AM MDT | Wind Advisory | BOI | 29 hr |
| May 15, 2:32 PM MDT | Severe Thunderstorm Warning | BOI | 43 min |
| May 21, 6:42 PM MDT | Dust Storm Advisory | BOI | 63 min |
| May 26, 4:34 PM MDT | Areal Flood Advisory | BOI | 3 hr |
| May 31, 4:24 PM MDT | Severe Thunderstorm Warning | BOI | 36 min |
| May 31, 4:55 PM MDT | Severe Thunderstorm Warning | BOI | 50 min |
| May 31, 5:11 PM MDT | Areal Flood Advisory | BOI | 2 hr |
| Jun 4, 5:09 PM MDT | Special Weather Statement | BOI | 36 min |
| Jun 4, 5:17 PM MDT | Special Weather Statement | BOI | 28 min |
| Jun 4, 6:34 PM MDT | Special Weather Statement | BOI | 26 min |
| Jun 6, 7:59 PM MDT | Severe Thunderstorm Warning | BOI | 46 min |
| Jun 6, 8:12 PM MDT | Dust Storm Advisory | BOI | 33 min |
| Jun 6, 8:22 PM MDT | Severe Thunderstorm Warning | BOI | 38 min |
| Jun 7, 2:20 PM MDT | Special Weather Statement | BOI | 40 min |
| Jun 7, 2:53 PM MDT | Special Weather Statement | BOI | 22 min |
| Jun 7, 3:23 PM MDT | Special Weather Statement | BOI | 37 min |
| Jun 7, 3:59 PM MDT | Special Weather Statement | BOI | 31 min |
| Jun 7, 6:02 PM MDT | Dust Storm Advisory | BOI | 43 min |
| Jun 8, 3:02 AM MDT | Flood Watch | BOI | 18 hr |
| Jun 11, 12:47 PM MDT | Special Weather Statement | BOI | 43 min |
| Jun 12, 4:10 PM MDT | Special Weather Statement | BOI | 50 min |
| Jun 12, 5:01 PM MDT | Special Weather Statement | BOI | 44 min |
| Jun 13, 4:58 PM MDT | Areal Flood Advisory | BOI | 5 hr |
| Jun 13, 6:13 PM MDT | Areal Flood Advisory | BOI | 3 hr |
| Jun 13, 6:56 PM MDT | Special Weather Statement | BOI | 49 min |
| Jun 25, 7:25 PM MDT | Special Weather Statement | BOI | 35 min |
| Jun 25, 8:10 PM MDT | Special Weather Statement | BOI | 50 min |
| Jun 26, 8:03 PM MDT | Special Weather Statement | BOI | 42 min |
| Jul 13, 12:59 PM MDT | Heat Advisory | BOI | 3 days |
| Jul 20, 1:04 PM MDT | Heat Advisory | BOI | 3 days |
| Jul 26, 1:54 PM MDT | Red Flag Warning | BOI | 31 hr |
| Aug 1, 2:56 PM MDT | Red Flag Warning | BOI | 32 hr |
| Aug 1, 2:56 PM MDT | Red Flag Warning | BOI | 19 min |
| Aug 1, 3:15 PM MDT | Fire Weather Watch | BOI | 22 hr |
| Aug 2, 1:31 PM MDT | Red Flag Warning | BOI | 57 hr |
| Aug 2, 4:10 PM MDT | Special Weather Statement | BOI | 50 min |
| Aug 2, 4:21 PM MDT | Flash Flood Warning | BOI | 3 hr |
| Aug 3, 5:31 PM MDT | Special Weather Statement | BOI | 44 min |
| Aug 3, 5:33 PM MDT | Special Weather Statement | BOI | 42 min |
| Aug 3, 5:35 PM MDT | Areal Flood Advisory | BOI | 3 hr |
| Aug 3, 6:01 PM MDT | Areal Flood Advisory | BOI | 7 hr |
| Aug 3, 6:03 PM MDT | Special Weather Statement | BOI | 42 min |
| Aug 3, 6:19 PM MDT | Special Weather Statement | BOI | 41 min |
| Aug 3, 6:27 PM MDT | Special Weather Statement | BOI | 33 min |
| Aug 4, 3:36 PM MDT | Areal Flood Advisory | BOI | 3 hr |
| Aug 7, 6:11 PM MDT | Special Weather Statement | BOI | 64 min |
| Aug 7, 6:47 PM MDT | Special Weather Statement | BOI | 43 min |
| Aug 13, 1:36 PM MDT | Heat Advisory | BOI | 4 days |
| Aug 19, 1:44 AM MDT | Flood Watch | BOI | 68 hr |
| Aug 20, 1:34 AM MDT | Wind Advisory | BOI | 36 hr |
| Aug 22, 3:21 AM MDT | Flood Watch | BOI | 21 hr |
| Aug 22, 8:46 PM MDT | Severe Thunderstorm Warning | BOI | 44 min |
| Aug 26, 2:32 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Aug 26, 5:55 PM MDT | Special Weather Statement | BOI | 50 min |
| Aug 26, 11:20 PM MDT | Areal Flood Advisory | BOI | 3 hr |
| Aug 28, 8:10 AM MDT | Fire Weather Watch | BOI | 5 hr |
| Aug 28, 1:16 PM MDT | Red Flag Warning | BOI | 31 hr |
| Sep 3, 1:19 AM MDT | Flood Watch | BOI | 18 hr |
| Oct 24, 2:14 PM MDT | Winter Weather Advisory | BOI | 34 hr |
| Oct 26, 1:57 PM MDT | Freeze Warning | BOI | 20 hr |
| Oct 31, 8:23 PM MDT | Air Stagnation Advisory | BOI | 34 hr |
| Nov 2, 9:45 PM MDT | Dense Fog Advisory | BOI | 14 hr |
| Nov 3, 1:33 PM MDT | Dense Fog Advisory | BOI | 17 hr |
| Nov 9, 2:11 PM MST | Air Stagnation Advisory | BOI | 9 days |
| Nov 17, 2:18 PM MST | Wind Advisory | BOI | 57 hr |
| Nov 23, 3:26 AM MST | Winter Weather Advisory | BOI | 26 hr |
| Nov 29, 2:41 PM MST | Winter Storm Watch | BOI | 43 hr |
| Nov 29, 2:41 PM MST | Winter Weather Advisory | BOI | 68 hr |
| Dec 1, 9:51 AM MST | Winter Storm Warning | BOI | 55 hr |
| Dec 11, 1:56 PM MST | Air Stagnation Advisory | BOI | 7 days |
| Dec 16, 1:40 PM MST | Dense Fog Advisory | BOI | 22 hr |
| Dec 20, 7:28 AM MST | Dense Fog Advisory | BOI | 5 hr |
| Dec 20, 2:11 PM MST | Dense Fog Advisory | BOI | 23 hr |
| Dec 21, 2:06 PM MST | Dense Fog Advisory | BOI | 21 hr |
| Dec 25, 8:45 PM MST | Winter Weather 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 | 6 |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 26 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flood Watch | 4 |
| River Flood Watch | 1 |
| Areal Flood Advisory | 9 |
| Winter | |
| Snow Squall Warning | 2 |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 12 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 1 |
| Wind and dust | |
| Dust Storm Advisory | 3 |
| Wind Advisory | 12 |
| Fire | |
| Red Flag Warning | 5 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Air Stagnation Advisory | 4 |
| Dense Fog Advisory | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.