Alert archive / Idaho / Jerome County
Weather alerts in Jerome County, Idaho, 2026
78 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jerome County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 78
- Warnings
- 25
- Watches
- 11
- Advisories
- 20
- Busiest month
- July17 alerts
- Busiest day
- August 21, 20264 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Jerome County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 0 | 100% | 1 | 0% | |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boise, ID: severe thunderstorm warnings | 46 | 10 | 78% | 43 | 60% | 23 min |
| NWS Boise, ID: flash flood warnings | 13 | 1 | 92% | 3 | 67% | 69 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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 9, 1:27 PM MST | Air Stagnation Advisory | BOI | 15 days |
| Jan 15, 2:14 PM MST | Dense Fog Advisory | BOI | 21 hr |
| Jan 18, 12:07 AM MST | Dense Fog Advisory | BOI | 13 hr |
| Jan 18, 4:14 PM MST | Dense Fog Advisory | BOI | 19 hr |
| Jan 31, 1:35 AM MST | Air Stagnation Advisory | BOI | 7 days |
| Feb 6, 2:13 AM MST | Air Stagnation Advisory | BOI | 55 hr |
| Feb 16, 10:48 AM MST | Wind Advisory | BOI | 18 hr |
| Mar 4, 1:23 AM MST | Wind Advisory | BOI | 43 hr |
| Mar 11, 2:44 AM MDT | Wind Advisory | BOI | 40 hr |
| Mar 12, 2:32 AM MDT | High Wind Watch | BOI | 35 hr |
| Mar 13, 1:48 PM MDT | High Wind Warning | BOI | 31 hr |
| Mar 31, 1:44 PM MDT | Wind Advisory | BOI | 55 hr |
| Apr 2, 1:09 AM MDT | Special Weather Statement | BOI | 51 min |
| Apr 12, 12:28 PM MDT | Special Weather Statement | BOI | 47 min |
| Apr 12, 12:40 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 15, 2:23 AM MDT | Freeze Watch | BOI | 10 hr |
| Apr 15, 12:43 PM MDT | Freeze Warning | BOI | 21 hr |
| Apr 15, 12:43 PM MDT | Freeze Warning | BOI | 45 hr |
| Apr 16, 9:36 PM MDT | Freeze Warning | BOI | 35 hr |
| Apr 23, 9:54 PM MDT | Freeze Watch | BOI | 13 hr |
| Apr 24, 10:24 AM MDT | Freeze Warning | BOI | 23 hr |
| May 11, 12:11 PM MDT | Wind Advisory | BOI | 58 hr |
| May 17, 1:31 AM MDT | Freeze Warning | BOI | 30 hr |
| May 18, 1:44 PM MDT | Frost Advisory | BOI | 18 hr |
| May 18, 7:22 PM MDT | Special Weather Statement | BOI | 38 min |
| Jun 2, 12:52 PM MDT | Red Flag Warning | BOI | 32 hr |
| Jun 5, 1:15 PM MDT | Fire Weather Watch | PIH | 23 hr |
| Jun 5, 1:44 PM MDT | Fire Weather Watch | BOI | 23 hr |
| Jun 6, 12:29 PM MDT | Red Flag Warning | PIH | 33 hr |
| Jun 6, 12:31 PM MDT | Red Flag Warning | BOI | 31 hr |
| Jun 10, 12:58 AM MDT | Wind Advisory | BOI | 18 hr |
| Jun 14, 12:46 PM MDT | Fire Weather Watch | BOI | 24 hr |
| Jun 15, 12:26 PM MDT | Red Flag Warning | BOI | 33 hr |
| Jun 15, 1:36 PM MDT | Red Flag Warning | PIH | 31 hr |
| Jun 16, 1:11 PM MDT | Red Flag Warning | BOI | 32 hr |
| Jun 16, 8:41 PM MDT | Red Flag Warning | PIH | 24 hr |
| Jun 21, 12:53 PM MDT | Red Flag Warning | PIH | 32 hr |
| Jun 25, 8:24 AM MDT | Fire Weather Watch | BOI | 4 hr |
| Jun 25, 12:53 PM MDT | Red Flag Warning | BOI | 33 hr |
| Jun 26, 10:09 PM MDT | Special Weather Statement | BOI | 36 min |
| Jul 1, 5:26 PM MDT | Special Weather Statement | BOI | 49 min |
| Jul 7, 2:29 PM MDT | Red Flag Warning | BOI | 30 hr |
| Jul 8, 1:59 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 2:57 PM MDT | Special Weather Statement | BOI | 33 min |
| Jul 8, 6:07 PM MDT | Special Weather Statement | BOI | 38 min |
| Jul 8, 6:48 PM MDT | Special Weather Statement | BOI | 42 min |
| Jul 9, 12:56 PM MDT | Heat Advisory | BOI | 56 hr |
| Jul 11, 8:55 PM MDT | Heat Advisory | BOI | 48 hr |
| Jul 15, 1:14 PM MDT | Red Flag Warning | BOI | 32 hr |
| Jul 19, 12:16 AM MDT | Heat Advisory | BOI | 45 hr |
| Jul 22, 1:17 PM MDT | Heat Advisory | BOI | 3 days |
| Jul 24, 1:02 PM MDT | Mesoscale Discussion | SPC | 118 min |
| Jul 25, 2:52 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 29, 2:14 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jul 29, 4:54 PM MDT | Special Weather Statement | BOI | 51 min |
| Jul 30, 12:11 PM MDT | Fire Weather Watch | PIH | 24 hr |
| Jul 31, 12:29 PM MDT | Red Flag Warning | PIH | 57 hr |
| Aug 5, 12:00 PM MDT | Heat Advisory | BOI | 3 days |
| Aug 9, 9:37 PM MDT | Red Flag Warning | PIH | 23 hr |
| Aug 11, 1:27 PM MDT | Fire Weather Watch | BOI | 24 hr |
| Aug 12, 1:20 PM MDT | Red Flag Warning | BOI | 3 days |
| Aug 12, 1:30 PM MDT | Red Flag Warning | PIH | 32 hr |
| Aug 19, 2:17 AM MDT | Heat Advisory | BOI | 67 hr |
| Aug 21, 12:41 PM MDT | Red Flag Warning | PIH | 32 hr |
| Aug 21, 12:48 PM MDT | Wind Advisory | BOI | 8 hr |
| Aug 21, 2:35 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 21, 5:20 PM MDT | Red Flag Warning | BOI | 31 hr |
| Aug 22, 2:49 PM MDT | Mesoscale Discussion | SPC | 116 min |
| Aug 22, 4:35 PM MDT | Special Weather Statement | BOI | 25 min |
| Aug 24, 1:03 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Aug 24, 6:13 PM MDT | Special Weather Statement | BOI | 62 min |
| Sep 1, 4:24 PM MDT | Severe Thunderstorm Warning | BOI | 21 min |
| Sep 1, 4:44 PM MDT | Special Weather Statement | BOI | 46 min |
| Sep 1, 5:52 PM MDT | Special Weather Statement | BOI | 38 min |
| Sep 16, 11:43 PM MDT | Special Weather Statement | BOI | 47 min |
| Sep 17, 12:43 AM MDT | Severe Thunderstorm Warning | BOI | 47 min |
| Sep 17, 1:42 PM MDT | Fire Weather Watch | BOI | 18 hr |
| Sep 18, 10:50 AM MDT | Flash Flood Watch | BOI | 13 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 | 2 |
| Mesoscale Discussion | 8 |
| Special Weather Statement | 14 |
| Flooding | |
| Flash Flood Watch | 1 |
| Heat | |
| Heat Advisory | 6 |
| Cold | |
| Freeze Warning | 5 |
| Freeze Watch | 2 |
| Frost Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 7 |
| Fire | |
| Red Flag Warning | 17 |
| Fire Weather Watch | 7 |
| Fog and smoke | |
| Air Stagnation Advisory | 3 |
| Dense Fog Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.