Alert archive / Idaho / Boise County
Weather alerts in Boise County, Idaho, 2016
41 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Boise County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 41
- Warnings
- 15
- Watches
- 10
- Advisories
- 9
- Busiest month
- August11 alerts
- Busiest day
- July 10, 20165 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Boise County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 1 | 0 | 100% | 0 | ||
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boise, ID: tornado warnings | 0 | 1 | 0% | |||
| NWS Boise, ID: severe thunderstorm warnings | 9 | 0 | 100% | 4 | 0% | |
| NWS Boise, ID: flash flood warnings | 6 | 0 | 100% | 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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 7, 2:00 PM MST | Dense Fog Advisory | BOI | 21 hr |
| Jan 29, 3:41 AM MST | Winter Weather Advisory | BOI | 25 hr |
| Feb 27, 7:34 AM MST | Special Weather Statement | BOI | 71 min |
| Mar 21, 8:38 PM MDT | Special Weather Statement | BOI | 37 min |
| May 6, 7:15 PM MDT | Severe Thunderstorm Warning | BOI | 30 min |
| May 6, 9:20 PM MDT | Areal Flood Advisory | BOI | 3 hr |
| Jun 6, 1:55 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 8, 4:04 PM MDT | Special Weather Statement | BOI | 41 min |
| Jul 10, 5:59 AM MDT | Special Weather Statement | BOI | 31 min |
| Jul 10, 6:30 AM MDT | Special Weather Statement | BOI | 45 min |
| Jul 10, 7:07 AM MDT | Special Weather Statement | BOI | 38 min |
| Jul 10, 9:46 AM MDT | Flash Flood Watch | BOI | 9 hr |
| Jul 10, 10:48 AM MDT | Flash Flood Warning | BOI | 2 hr |
| Jul 18, 8:26 PM MDT | Red Flag Warning | PIH | 25 hr |
| Jul 19, 2:24 PM MDT | Red Flag Warning | PIH | 29 hr |
| Jul 21, 3:18 AM MDT | Fire Weather Watch | PIH | 11 hr |
| Jul 21, 2:24 PM MDT | Red Flag Warning | PIH | 32 hr |
| Aug 1, 3:33 AM MDT | Fire Weather Watch | PIH | 9 hr |
| Aug 1, 1:02 PM MDT | Red Flag Warning | PIH | 32 hr |
| Aug 5, 1:57 PM MDT | Fire Weather Watch | BOI | 25 hr |
| Aug 6, 3:05 PM MDT | Red Flag Warning | BOI | 27 hr |
| Aug 18, 1:48 AM MDT | Red Flag Warning | PIH | 22 hr |
| Aug 20, 2:47 PM MDT | Fire Weather Watch | PIH | 23 hr |
| Aug 21, 8:09 AM MDT | Fire Weather Watch | BOI | 24 hr |
| Aug 21, 2:08 PM MDT | Red Flag Warning | PIH | 31 hr |
| Aug 22, 7:49 AM MDT | Red Flag Warning | BOI | 13 hr |
| Aug 29, 1:52 PM MDT | Red Flag Warning | BOI | 31 hr |
| Aug 30, 2:21 AM MDT | Red Flag Warning | PIH | 68 hr |
| Sep 1, 9:58 PM MDT | Red Flag Warning | PIH | 22 hr |
| Sep 10, 2:12 PM MDT | Red Flag Warning | PIH | 31 hr |
| Oct 13, 3:52 AM MDT | Flash Flood Watch | BOI | 3 days |
| Oct 30, 3:29 AM MDT | Flash Flood Watch | BOI | 21 hr |
| Dec 2, 2:36 PM MST | Winter Storm Watch | BOI | 13 hr |
| Dec 3, 3:25 AM MST | Winter Weather Advisory | BOI | 41 hr |
| Dec 7, 4:35 AM MST | Winter Weather Advisory | BOI | 3 days |
| Dec 12, 2:14 PM MST | Winter Storm Watch | BOI | 23 hr |
| Dec 13, 1:43 PM MST | Winter Weather Advisory | BOI | 45 hr |
| Dec 19, 4:28 AM MST | Winter Storm Warning | BOI | 34 hr |
| Dec 22, 2:26 PM MST | Winter Weather Advisory | BOI | 51 hr |
| Dec 24, 11:10 AM MST | Winter Weather Advisory | BOI | 6 hr |
| Dec 26, 2:51 PM MST | Winter Weather Advisory | BOI | 30 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 | 1 |
| Mesoscale Discussion | 1 |
| Special Weather Statement | 6 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 7 |
| Fire | |
| Red Flag Warning | 12 |
| Fire Weather Watch | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
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.