Low Risk Oregon  ·  Tornado / Flash Flooding

Washington County OR

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

5/ 10
Threat Score
Population
600
Area
727
sq miles
Primary Hazard
Tornado / Flash Flooding
FEMA Disasters
6
federally declared

Washington County OR in Oregon faces tornado / flash flooding risk across its 727 square mile area. Hillsboro anchors this Portland suburb county with major Intel and Nike campuses. Washington serves as the county seat and regional emergency coordination hub.

// 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 5 / 10    Low Risk
Primary Hazard Tornado / Flash Flooding
Secondary Hazard Severe Storm
FEMA Flood Zone Low
Federally Declared Disasters 6
Last Major Event 2020 Labor Day Fires
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (503) 846-8685
Emergency Shelters 2 designated facilities
Evacuation Routes State and US highways

// County Profile

County Washington County OR
State Oregon (OR)
Population 600
Area 727 sq miles
FEMA Region Low

// Major Cities

Aloha OR Beaverton OR Tigard OR Hillsboro OR

// Cities in This County

// Other Oregon Counties

// Nearby Infrastructure Risks

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

📡
Hillsboro OR Submarine Cable Landing Station
Telecom / Internet  ·  Hillsboro, OR  ·  Various  ·  1-mi risk zone
9/10 High
Intel Hillsboro OR Campus
Power Plant  ·  Hillsboro, OR  ·  Intel Corporation  ·  5-mi risk zone
8/10 High
📡
Hillsboro OR Intel Data Center Campus
Telecom / Internet  ·  Hillsboro, OR  ·  Intel Corporation / Various  ·  2-mi risk zone
8/10 High
🌊
Willamette River Levee System OR
Major Dam  ·  Portland, OR  ·  US Army Corps of Engineers  ·  10-mi risk zone
7/10 High
FLIR Systems Wilsonville OR
Military Installation  ·  Wilsonville, OR  ·  Teledyne FLIR  ·  5-mi risk zone
6/10 Moderate

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