Idaho
Idaho's mountains burn every summer and bury under snow every winter. The state's rural character means fire crews are stretched thin, roads wash out, and the nearest hospital can be two hours away. Self-reliance here is not a philosophy. It is geography.
Enter your Idaho ZIP for live alerts, forecasts, and county-specific data.
Know your region
McCall, Stanley, Ketchum, Sun Valley, Salmon. The Sawtooth and Salmon River country burns in major wildfires nearly every year. The 2020 fire season scorched over 600,000 acres. Smoke fills these valleys for weeks. Winter brings 100-plus inches of snow and avalanche risk.
Primary hazards: wildfire, winter storms, avalanche, flash floods
Boise, Meridian, Nampa, Caldwell. The state's population center sits in the foothills where wildfire risk meets urban growth. The Boise River floods during spring runoff. Summer smoke from regional fires degrades air quality for weeks. The 2020 Stanley earthquake (M6.5) was felt here.
Primary hazards: wildfire, flooding, earthquakes, smoke, heat
Idaho Falls, Pocatello, Rexburg, the Snake River Plain. Proximity to Yellowstone means earthquake swarms are routine. The Teton Dam failure in 1976 killed 11 people and destroyed thousands of homes. Winter cold in the Upper Snake is severe.
Primary hazards: earthquakes, flooding, winter storms, wildfire
Your hazard profile
Each links to a full guide with during-event protocol, recovery steps, and resources specific to ID.
Idaho burns every summer. The 2020 fire season consumed over 600,000 acres. The Boise National Forest, Sawtooth Range, and Salmon River corridor are repeat fire zones. Rural communities face limited firefighting resources and narrow evacuation routes.
Read the wildfires guide →
Mountain communities receive 100-plus inches of snow annually. Valley inversions trap freezing air for weeks. Avalanches threaten backcountry travelers and some highway corridors. Highways 21 and 55 close without notice.
Read the winter storms guide →
The 2020 Stanley earthquake (M6.5) was felt across the state. The 1983 Borah Peak earthquake (M7.3) remains the largest recorded in Idaho. Eastern Idaho sits near the Yellowstone system, where thousands of small quakes occur annually.
Read the earthquakes guide →
Rapid spring snowmelt causes river flooding. Flash floods in steep canyons develop during summer thunderstorms. The 1976 Teton Dam failure killed 11 and destroyed 4,000 homes. Rain-on-snow events produce some of the worst flooding.
Read the flooding guide →
Dry lightning storms ignite wildfires across the mountains. Summer thunderstorms bring damaging winds and localized flash flooding. Lightning without significant rain is the primary wildfire ignition source.
Read the severe thunderstorms guide →
Idaho resources
Idaho Office of Emergency Management. Coordinates disaster response, manages the state's hazard mitigation plan, and runs community preparedness programs.
Real-time wildfire information for Idaho. Active fire maps, smoke forecasts, fire restrictions, and evacuation notices. Essential from June through October.
Covers southwest and central Idaho. Fire weather forecasts, winter storm warnings, and flood advisories. Red flag warnings during fire season are critical.
Daily avalanche forecasts for Idaho backcountry zones. Essential for anyone recreating in the mountains from November through May.
Real-time road conditions, pass closures, chain requirements, and fire-related road closures. Check before every mountain drive.
The smoke summers
Since 2015, Idaho has experienced at least one major wildfire season that fills the state's valleys with smoke for weeks at a time. The Air Quality Index readings in Boise, McCall, and Sun Valley have hit "hazardous" levels during the worst events. Schools cancel outdoor recess. Hospitals see respiratory admissions climb. Residents learn to check AQI forecasts the way they check weather.
The smoke is not always from Idaho fires. Regional fires in Oregon, Washington, Montana, and California all contribute. A single fire 200 miles away can degrade your air quality for a month.
For every Idaho household, wildfire preparation now includes an indoor air quality plan: sealed windows, a portable air purifier with a HEPA filter, N95 masks for unavoidable outdoor exposure, and the understanding that fire season is also smoke season, whether the fire is in your county or not.