Moderate Risk Colorado  ·  Tornado / Flash Flooding

Arapahoe County CO

EMERGENCY PREPAREDNESS & DISASTER RISK PROFILE  ·  LAST UPDATED: Mar 2026

6/ 10
Threat Score
Population
656
Area
805
sq miles
Primary Hazard
Tornado / Flash Flooding
FEMA Disasters
6
federally declared

Arapahoe County east of Denver is the fourth most populous county in Colorado hosting Buckley Space Force Base and the Anschutz Medical Campus. Buckley hosts critical national security satellite operations and Space Force missions. The South Platte River creates flooding risk. The county faces moderate tornado risk from Front Range storm systems and wildfire risk when dry conditions combine with high winds. The Anschutz Medical Campus is one of the largest medical campuses in the US.

// Preparedness Recommendations

  • Evacuation routes inland should be identified in advance.
  • Store at least 72 hours of food and water.
  • Elevate critical belongings above flood level.
  • Have backup power ready in case of grid failure.

// Recommended Supplies

Essential gear for power outages, severe weather, and emergency situations in your area.

// Risk Intelligence

Threat Score 6 / 10    Moderate Risk
Primary Hazard Tornado / Flash Flooding
Secondary Hazard Wildfire
FEMA Flood Zone Moderate
Federally Declared Disasters 6
Last Major Event 2023 Flash Flooding
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (720) 874-6600
Emergency Shelters 16 designated facilities
Evacuation Routes I-25 I-70 US-83 CO-30

// County Profile

County Arapahoe County CO
State Colorado (CO)
Population 656
Area 805 sq miles
FEMA Region Moderate

// Major Cities

Centennial CO Aurora CO

// Cities in This County

// Other Colorado Counties

// Nearby Infrastructure Risks

Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.

Buckley Space Force Base CO
Military Installation  ·  Aurora, CO  ·  US Space Force  ·  25-mi risk zone
7/10 High

Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.