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Boise National Forest

Flash Flood Warning issued September 18 at 1:37PM MDT until September 18 at 4:30PM MDT by NWS Pocatello ID

1:37 PM — 4:30 PM

FFWPIH The National Weather Service in Pocatello has issued a * Flash Flood Warning for... Northeastern Blaine County in central Idaho... Southeastern Custer County in central Idaho... Southwestern Butte County in southeastern Idaho... * Until 430 PM MDT. * At 137 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Rainfall rates exceeding 0.5 inches in 1 hour are indicated.. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, as well as other poor drainage and low-lying areas involving step terrain. Rockfall is also possible. * Some locations that will experience flash flooding include... Grouse.

Flash Flood Watch issued September 18 at 10:50AM MDT until September 19 at 12:00AM MDT by NWS Boise ID

10:50 AM — September 19th, 12:00 AM

* WHAT...Flash flooding and debris flows caused by excessive rainfall are possible over the Wapiti, Crooked, Buckhorn burn scar areas. * WHERE...Portions of south central and southwest Idaho, including the following areas, in south central Idaho, Western Magic Valley. In southwest Idaho, Boise Mountains, Camas Prairie, Lower Treasure Valley, Upper Treasure Valley and West Central Mountains. * WHEN...Through this evening. * IMPACTS...Heavy rainfall over the Wapiti, Crooked, Buckhorn burn scar is expected up to and during the period of the watch. Residents near the Wapiti, Crooked, Buckhorn burn scar should prepare for potential debris flow. Be sure to stay up to date with information from local authorities. Heavy rainfall could trigger flash flooding or debris flows in and near recent wildfire burn scars. * ADDITIONAL DETAILS... - National Weather Service Meteorologists are forecasting heavy rainfall over the burn scar, which may lead to flash flooding and debris flows. - Some locations that may experience flash flooding include... Idaho City, Fairfield, Lowman, Horseshoe Bend, Pine, Prairie, Atlanta, Anderson Dam, Corral, Centerville, Pioneerville, Garden Valley, Banks, Gardena, Crouch, Placerville, Trinity Lakes, Rocky Bar, Dutch Creek Guard Station and Featherville. - https://www.weather.gov/safety/flood

Flood Watch issued September 18 at 10:30AM MDT until September 19 at 12:00AM MDT by NWS Pocatello ID

10:30 AM — September 19th, 12:00 AM

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of central, eastern, and southeast Idaho, including the following areas, in central Idaho, Challis/Pahsimeroi Valleys, Frank Church Wilderness, Lost River Valley, Sawtooth/Stanley Basin, Sun Valley Region and Wood River Foothills. In eastern Idaho, Beaverhead - Lemhi Highlands, Big Hole Mountains, Centennial Mountains - Island Park and Teton Valley. In southeast Idaho, Arco/Mud Lake Desert, Bear Lake Valley, Bear River Range, Blackfoot Mountains, Caribou Range, Franklin/Eastern Oneida Region, Lower Snake River Plain and Marsh and Arbon Highlands. * WHEN...Through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. * ADDITIONAL DETAILS... - Heavy rainfall from thunderstorms is expected through this evening across central and eastern Idaho. Rainfall amounts in excess of 0.50" are possible, leading to flooding within burn scars, steep terrain, and urban areas. - http://www.weather.gov/safety/flood

Overview

The Boise National Forest encompasses 2.5 million acres of diverse terrain northeast of Boise, Idaho, ranging from 2,800 feet elevation at the North Fork Payette River Canyon to nearly 10,000 feet at Trinity Mountain. The forest is currently open with typical seasonal conditions. Active alerts include: Granite Creek Road (NFS 327) closed to wheeled motorized vehicles for winter snowmobile grooming season; portions of Lava Fire burn area roads (625, 653, 624) remain closed to motorized/mechanized travel but open to foot and livestock use; ongoing salvage logging operations near the Flat Fire burn area with temporary road closures through December 31, 2025; portions of William Pogue and Roaring River Trails closed; and several camping area restrictions along Highway 21 to allow recovery from overuse. The forest maintains low fire danger in the Boise Mountains area and moderate in the Snake River & Foothills zones. Standard 14-day camping limits apply. Be prepared for winter conditions on forest roads—they are not plowed and can be covered with snow and ice. The forest offers 500+ trails, 250+ lakes and reservoirs, 70 campgrounds, and extensive winter recreation opportunities including snowmobiling and cross-country skiing.

Campgrounds

Amanita Antelope BIG EDDY CAMPGROUND BOILING SPRINGS CAMPGROUND BUCK MOUNTAIN CAMPGROUND Bad Bear Campground Badger Creek Campground Bald Mountain Campground Barber Flat Cabin Barneys Campground Bear Valley Campground Beaver Creek Cabin Big Roaring River Lake Campground Big Trinity Cabin Black Rock Boiling Springs Cabin Bonneville Bull Trout CANYON CAMPGROUND CARTWRIGHT RIDGE CAMPGROUND Castle Creek Campground Cold Springs Campground Cottonwood Campground Cottonwood Guard Station Rental Cabin Cozy Cove DEADWOOD CAMPGROUND Deadwood Lookout Cabin Deer Park Cabin

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