Alert archive / Idaho / 2021
Weather alerts in Idaho, September 2021
86 weather alerts in September 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in September 2021. Tap one for its archive.
- Alerts
- 86
- Warnings
- 24
- Watches
- 3
- Advisories
- 13
- Busiest day
- September 10, 202121 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 3:06 PM MDT | Frost Advisory | OTX | Benewah, Bonner, Boundary, Kootenai, Latah, Shoshone | 19 hr |
| Sep 2, 9:29 AM MDT | Special Weather Statement | PIH | Bear Lake | 31 min |
| Sep 2, 10:16 AM MDT | Special Weather Statement | PIH | Caribou | 29 min |
| Sep 2, 7:18 PM MDT | Special Weather Statement | PIH | Caribou | 42 min |
| Sep 2, 7:55 PM MDT | Special Weather Statement | PIH | Caribou | 35 min |
| Sep 2, 8:20 PM MDT | Severe Thunderstorm Warning | PIH | Caribou | 25 min |
| Sep 2, 8:43 PM MDT | Severe Thunderstorm Warning | PIH | Caribou | 32 min |
| Sep 2, 9:07 PM MDT | Special Weather Statement | RIW | Caribou | 38 min |
| Sep 5, 1:28 PM MDT | Red Flag Warning | PIH | Bannock, Bear Lake, Bingham, Blaine, Boise, Bonneville and 17 more | 32 hr |
| Sep 5, 3:13 PM MDT | Red Flag Warning | BOI | Idaho, Valley | 7 hr |
| Sep 6, 8:18 AM MDT | Red Flag Warning | BOI | Boise, Camas, Elmore, Gem, Idaho, Valley | 13 hr |
| Sep 7, 12:16 PM MDT | Fire Weather Watch | MSO | Clearwater, Idaho | 15 hr |
| Sep 7, 12:37 PM MDT | Red Flag Warning | PIH | Butte, Custer, Idaho, Lemhi, Valley | 32 hr |
| Sep 7, 1:13 PM MDT | Red Flag Warning | BOI | Boise, Gem, Idaho, Valley | 32 hr |
| Sep 8, 1:19 PM MDT | Red Flag Warning | PIH | Butte, Custer, Idaho, Lemhi, Valley | 32 hr |
| Sep 10, 2:47 AM MDT | Red Flag Warning | PIH | Bannock, Bear Lake, Bingham, Blaine, Boise, Bonneville and 19 more | 19 hr |
| Sep 10, 1:02 PM MDT | Mesoscale Discussion | SPC | Gooding, Jerome, Twin Falls | 118 min |
| Sep 10, 2:26 PM MDT | Special Weather Statement | PIH | Minidoka | 34 min |
| Sep 10, 2:50 PM MDT | Special Weather Statement | PIH | Bingham, Power | 25 min |
| Sep 10, 3:09 PM MDT | Special Weather Statement | PIH | Blaine | 36 min |
| Sep 10, 3:15 PM MDT | Special Weather Statement | PIH | Bannock, Bingham, Jefferson, Power | 45 min |
| Sep 10, 3:18 PM MDT | Special Weather Statement | PIH | Blaine, Lincoln, Minidoka | 27 min |
| Sep 10, 3:27 PM MDT | Special Weather Statement | BOI | Jerome, Twin Falls | 63 min |
| Sep 10, 3:45 PM MDT | Special Weather Statement | PIH | Blaine, Butte, Custer, Minidoka | 30 min |
| Sep 10, 4:00 PM MDT | Severe Thunderstorm Warning | PIH | Butte, Clark, Fremont, Jefferson, Madison | 30 min |
| Sep 10, 4:04 PM MDT | Special Weather Statement | PIH | Bingham | 26 min |
| Sep 10, 4:16 PM MDT | Special Weather Statement | PIH | Butte | 29 min |
| Sep 10, 4:17 PM MDT | Special Weather Statement | MSO | Lemhi | 43 min |
| Sep 10, 4:21 PM MDT | Special Weather Statement | PIH | Butte | 24 min |
| Sep 10, 4:23 PM MDT | Severe Thunderstorm Warning | PIH | Power | 24 min |
| Sep 10, 4:28 PM MDT | Severe Thunderstorm Warning | PIH | Clark, Fremont, Jefferson | 14 min |
| Sep 10, 4:32 PM MDT | Special Weather Statement | BOI | Gooding, Twin Falls | 58 min |
| Sep 10, 4:34 PM MDT | Special Weather Statement | PIH | Bonneville, Jefferson, Madison | 26 min |
| Sep 10, 4:42 PM MDT | Special Weather Statement | PIH | Butte | 33 min |
| Sep 10, 4:46 PM MDT | Special Weather Statement | MSO | Lemhi | 44 min |
| Sep 10, 4:46 PM MDT | Special Weather Statement | PIH | Power | 29 min |
| Sep 10, 6:13 PM MDT | Special Weather Statement | PIH | Oneida, Power | 47 min |
| Sep 10, 6:27 PM MDT | Special Weather Statement | SLC | Oneida | 33 min |
| Sep 10, 6:39 PM MDT | Severe Thunderstorm Warning | BOI | Canyon, Owyhee, Payette | 51 min |
| Sep 10, 6:47 PM MDT | Special Weather Statement | PIH | Bingham, Butte | 43 min |
| Sep 10, 6:56 PM MDT | Special Weather Statement | PIH | Bannock, Bear Lake, Caribou, Franklin | 64 min |
| Sep 10, 7:02 PM MDT | Special Weather Statement | BOI | Washington | 28 min |
| Sep 10, 7:19 PM MDT | Special Weather Statement | MSO | Lemhi | 41 min |
| Sep 10, 7:31 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Canyon, Gem, Owyhee, Payette | 29 min |
| Sep 11, 3:44 AM MDT | Dense Fog Advisory | BOI | Ada, Adams, Canyon, Elmore, Gem, Owyhee and 2 more | 8 hr |
| Sep 12, 4:19 PM MDT | Special Weather Statement | PIH | Oneida | 26 min |
| Sep 12, 4:45 PM MDT | Special Weather Statement | PIH | Oneida | 30 min |
| Sep 12, 4:48 PM MDT | Special Weather Statement | PIH | Bannock | 27 min |
| Sep 12, 4:59 PM MDT | Mesoscale Discussion | SPC | Bear Lake, Caribou, Franklin, Oneida | 91 min |
| Sep 12, 5:15 PM MDT | Special Weather Statement | PIH | Caribou | 30 min |
| Sep 12, 5:45 PM MDT | Special Weather Statement | PIH | Bear Lake | 45 min |
| Sep 12, 6:17 PM MDT | Severe Thunderstorm Warning | PIH | Bear Lake, Caribou | 28 min |
| Sep 12, 6:32 PM MDT | Special Weather Statement | PIH | Oneida | 28 min |
| Sep 12, 7:11 PM MDT | Special Weather Statement | PIH | Caribou | 34 min |
| Sep 12, 8:47 PM MDT | Special Weather Statement | BOI | Twin Falls | 28 min |
| Sep 14, 1:25 PM MDT | Wind Advisory | PIH | Bingham, Bonneville, Butte, Jefferson | 32 hr |
| Sep 14, 1:28 PM MDT | Red Flag Warning | PIH | Bingham, Bonneville, Butte, Clark, Fremont, Jefferson and 3 more | 32 hr |
| Sep 14, 3:34 PM MDT | Freeze Watch | OTX | Bonner, Boundary, Kootenai | 24 hr |
| Sep 15, 3:31 PM MDT | Frost Advisory | OTX | Benewah, Bonner, Boundary, Kootenai, Latah | 17 hr |
| Sep 16, 2:59 AM MDT | Red Flag Warning | PIH | Blaine, Butte, Jerome, Lincoln, Minidoka, Power | 17 hr |
| Sep 16, 1:24 PM MDT | Red Flag Warning | BOI | Boise, Camas, Elmore, Gem, Gooding, Idaho and 5 more | 56 hr |
| Sep 16, 1:35 PM MDT | Red Flag Warning | PIH | Bingham, Blaine, Boise, Bonneville, Butte, Cassia and 14 more | 55 hr |
| Sep 17, 1:44 PM MDT | Wind Advisory | PIH | Bannock, Bingham, Blaine, Bonneville, Butte, Clark and 5 more | 31 hr |
| Sep 17, 2:16 PM MDT | High Wind Warning | MSO | Lemhi | 31 hr |
| Sep 18, 5:00 AM MDT | Wind Advisory | BOI | Ada, Adams, Boise, Camas, Canyon, Elmore and 5 more | 15 hr |
| Sep 18, 1:18 PM MDT | Special Weather Statement | PIH | Bingham | 57 min |
| Sep 18, 2:12 PM MDT | Special Weather Statement | PIH | Bannock, Caribou | 63 min |
| Sep 18, 3:06 PM MDT | Special Weather Statement | PIH | Bonneville | 54 min |
| Sep 18, 3:23 PM MDT | Special Weather Statement | PIH | Bannock, Bingham | 37 min |
| Sep 19, 2:11 AM MDT | Frost Advisory | PIH | Bannock, Bingham, Blaine, Bonneville, Butte, Cassia and 6 more | 31 hr |
| Sep 19, 8:46 AM MDT | Lake Wind Advisory | PIH | Bannock, Bingham, Power | 11 hr |
| Sep 19, 11:16 AM MDT | Special Weather Statement | PIH | Minidoka | 59 min |
| Sep 19, 12:07 PM MDT | Special Weather Statement | PIH | Cassia, Power | 53 min |
| Sep 20, 12:50 PM MDT | Frost Advisory | PIH | Bannock, Bingham, Blaine, Bonneville, Butte, Cassia and 6 more | 20 hr |
| Sep 21, 1:32 PM MDT | Frost Advisory | PIH | Bannock, Bingham, Bonneville, Butte, Fremont, Jefferson and 2 more | 19 hr |
| Sep 26, 1:23 PM MDT | Red Flag Warning | PIH | Blaine, Boise, Custer | 51 min |
| Sep 26, 2:14 PM MDT | Red Flag Warning | PIH | Blaine, Boise, Custer | 30 hr |
| Sep 27, 5:01 AM MDT | Freeze Watch | PIH | Bannock, Bingham, Blaine, Bonneville, Butte, Cassia and 6 more | 24 hr |
| Sep 27, 2:01 PM MDT | Wind Advisory | BOI | Ada, Adams, Canyon, Elmore, Gem, Gooding and 5 more | 20 hr |
| Sep 27, 2:53 PM MDT | Wind Advisory | PIH | Bannock, Bingham, Blaine, Bonneville, Butte, Cassia and 7 more | 27 hr |
| Sep 28, 4:35 AM MDT | Freeze Warning | PIH | Bannock, Bingham, Blaine, Bonneville, Butte, Cassia and 6 more | 29 hr |
| Sep 28, 3:45 PM MDT | Special Weather Statement | MSO | Idaho | 45 min |
| Sep 28, 6:37 PM MDT | Special Weather Statement | OTX | Bonner | 23 min |
| Sep 28, 10:31 PM MDT | Special Weather Statement | OTX | Kootenai | 29 min |
| Sep 29, 8:27 AM MDT | Dense Fog Advisory | BOI | Adams, Gem, Valley, Washington | 3 hr |
| Sep 29, 9:58 AM MDT | Freeze Warning | PIH | Bannock, Bingham, Blaine, Bonneville, Butte, Cassia and 6 more | 23 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 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 44 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 2 |
| Frost Advisory | 5 |
| Wind and dust | |
| High Wind Warning | 1 |
| Lake Wind Advisory | 1 |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 13 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Butte County22
- Bingham County20
- Power County20
- Jefferson County17
- Bannock County16
- Blaine County16
- Bonneville County15
- Caribou County14
- Fremont County14
- Madison County14
- Minidoka County14
- Lincoln County12
- Idaho County11
- Valley County11
- Boise County9
- Custer County9
- Lemhi County9
- Oneida County9
- Cassia County9
- Jerome County8
- Gem County8
- Twin Falls County8
- Bear Lake County7
- Clark County7
- Owyhee County6
- Elmore County5
- Canyon County5
- Payette County5
- Washington County5
- Bonner County4
- Kootenai County4
- Franklin County4
- Teton County4
- Gooding County4
- Ada County4
- Adams County4
- Boundary County3
- Camas County3
- Benewah County2
- Latah County2
2 more counties
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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. Rebuilt daily.