Low Risk Illinois  ·  Tornado / Flash Flooding

Grundy County IL

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

5/ 10
Threat Score
Population
51
Area
430
sq miles
Primary Hazard
Tornado / Flash Flooding
FEMA Disasters
6
federally declared

Grundy County IL in Illinois faces tornado / flash flooding risk across its 430 square mile area. Morris serves this northeast Illinois county near Dresden nuclear zone on the Illinois River. Grundy serves as the county seat and regional emergency coordination hub for this area.

// 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 Winter Storm
FEMA Flood Zone Low
Federally Declared Disasters 6
Last Major Event 2019 Tornado
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (815) 941-3224
Emergency Shelters 2 designated facilities
Evacuation Routes State and US highways

// County Profile

County Grundy County IL
State Illinois (IL)
Population 51
Area 430 sq miles
FEMA Region Low

// Other Illinois Counties

// Nearby Infrastructure Risks

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

Braidwood Nuclear Station IL
Nuclear Power Plant  ·  Braceville, IL  ·  Constellation Energy  ·  10-mi risk zone
8/10 High
Dresden Nuclear Station IL
Nuclear Power Plant  ·  Morris, IL  ·  Constellation Energy  ·  10-mi risk zone
8/10 High

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