△wildfireactive
North Fork Lost Horse Fire — 267ac 0% contained
5.0
46.1627° N, 114.3397° W·US-MT
Started 2d agoEvent Details
Typewildfire
Severity5.0
Statusactive
Location46.1627°N, 114.3397°W (US-MT)
Started2026-07-25T00:49:00+00:00
Last Updated2026-07-27T00:02:48.337954+00:00
Sourcenifc
Source URLdata-nifc.opendata.arcgis.com
Confidence1.00
Impact Zones
Active Fire Perimeter
Active fire. Immediate life threat. Mandatory evacuation likely in effect.
Evacuation Zone
Evacuation warnings likely. Prepare to leave immediately if ordered.
Smoke & Ember Zone
Ember showers and heavy smoke possible. Reduced visibility. Respiratory hazard.
Air Quality Impact Zone
Degraded air quality from smoke. Sensitive groups should limit outdoor activity.
Zone estimates are based on scientific models and may differ from actual local conditions.
Impact Analysis
Population Exposed717,435
Hospitals1
Schools6
Fire Stations3
Population from ACS 5-Year 2022 tract sampling; structure counts from Microsoft Building Footprints or Census ACS housing data, capped by USGS NLCD 2021 developed land. Estimates for situational awareness — not for actuarial, regulatory, or underwriting use.
Historical Comparison
No historical analogs available yet.
Related
Zone estimates are based on scientific models and may differ from actual local conditions.