Low Risk Michigan  ·  Tornado / Flash Flooding

Washtenaw County MI

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

4/ 10
Threat Score
Population
374
Area
706
sq miles
Primary Hazard
Tornado / Flash Flooding
FEMA Disasters
3
federally declared

Washtenaw County is home to Ann Arbor and the University of Michigan — one of the most prestigious public universities in the world with 47000 students and a world-class health system. The Huron River creates flooding risk through Ann Arbor. The county hosts major automotive research facilities and University of Michigan Health System creating critical healthcare infrastructure. U of M's Ross School of Business Law School and medical complex create enormous institutional emergency planning requirements.

// 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 4 / 10    Low Risk
Primary Hazard Tornado / Flash Flooding
Secondary Hazard Severe Storm
FEMA Flood Zone Low
Federally Declared Disasters 3
Last Major Event 2019 Flooding
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (734) 222-6850
Emergency Shelters 12 designated facilities
Evacuation Routes I-94 US-23 M-14 M-17

// County Profile

County Washtenaw County MI
State Michigan (MI)
Population 374
Area 706 sq miles
FEMA Region Low

// Major Cities

Ypsilanti MI Ann Arbor MI

// Cities in This County

// Other Michigan Counties

// Nearby Infrastructure Risks

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

University of Michigan Ann Arbor MI
Chemical Facility  ·  Ann Arbor, MI  ·  University of Michigan  ·  5-mi risk zone
7/10 High
🏟
Michigan Stadium Ann Arbor MI
Stadium / Arena  ·  Ann Arbor, MI  ·  Michigan Wolverines / NCAA  ·  2-mi risk zone
7/10 High

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