Montgomery County Disaster Risk
Montgomery County, Maryland
FEMA Risk Rating
Relatively Moderate
National Percentile
92th
of 3,144 counties
State Rank
#4
of 24 (1 = highest risk)
Flood Risk
94th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Moderate
Higher than 94% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Very Low
Higher than 25% of US counties
Tornado
Tornado and severe thunderstorm risk
Relatively Low
Higher than 79% of US counties
Earthquake
Seismic activity and ground shaking risk
Moderate
Higher than 92% of US counties
Hurricane
Tropical cyclone and hurricane risk
Moderate
Higher than 92% of US counties
Risk Overview
About Natural Disaster Risk in Montgomery County, Maryland
Montgomery County Faces Highest Risk
Montgomery County scores 91.67 on the composite risk scale, placing it substantially above the national median and indicating exceptional natural disaster exposure compared to typical U.S. counties. The county's flood risk (93.73), hurricane risk (91.78), tornado risk (78.66), and earthquake risk (91.76) all exceed national norms dramatically. This convergence of multiple extreme hazards makes Montgomery County one of America's highest-risk jurisdictions.
Maryland's Riskiest County
Montgomery County ranks as Maryland's riskiest jurisdiction with a composite score of 91.67, substantially exceeding the state average of 60.22 and surpassing all other Maryland counties. Frederick County (74.20), Harford County (72.46), and Howard County (72.42) trail significantly behind Montgomery's elevated exposure. The county's position in central Maryland and proximity to major geological and atmospheric hazard zones drives this exceptional risk profile.
Dramatically Riskier Than Peers
Montgomery County's composite score of 91.67 far exceeds neighboring Frederick County (74.20), Howard County (72.42), and Washington County. Prince George's County shares similar exposure, though Montgomery's flood risk (93.73) is exceptional within the region. Montgomery's convergence of four extreme hazards distinguishes it sharply from all surrounding jurisdictions.
Floods, Hurricanes, Earthquakes, Tornadoes
Montgomery County faces exceptional risk across four major hazard types: flood (93.73), hurricane (91.78), earthquake (91.76), and tornado (78.66)—all among the nation's highest. This rare convergence of extreme exposure demands comprehensive, multi-layered disaster preparedness. Wildfire risk alone remains moderate at 25.13, offering minimal relief in the county's dangerous hazard portfolio.
Comprehensive Coverage Is Non-Negotiable
Montgomery County residents must obtain comprehensive homeowners insurance with explicit coverage for flood, hurricane, wind, earthquake, and tornado damage—a multi-peril package essential given the county's 91.67 composite risk. Flood insurance is absolutely critical; the county's 93.73 flood risk affects even some higher-elevation properties in the Potomac River watershed. Invest immediately in structural retrofitting (reinforced roof, impact-resistant windows, storm shelter) to survive Montgomery's exceptional multi-hazard exposure.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Montgomery County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Montgomery County
Risk Verdict
Montgomery County faces a moderate natural disaster risk profile, ranking at the 92th percentile nationally under FEMA's composite risk model. This risk level calls for more than general awareness: insurance coverage review, a family communication plan, and a prepared go-bag are practical priorities.
Hazard Breakdown
Flood risk is Montgomery County's dominant natural hazard, ranked at the 94th percentile nationally under FEMA's National Risk Index. Hurricane ranks second at the 92th percentile nationally. Additional tracked hazards include earthquake (92th percentile), tornado (79th percentile), wildfire (25th percentile).
Preparedness Context
Montgomery County's top natural hazard is flood risk, ranked at the 94th percentile nationally. Homeowners here should confirm whether they are in a FEMA-designated flood zone and check if standard homeowners insurance covers flood damage — it typically does not. The county's second-ranked hazard, hurricane at the 92th percentile nationally, means Montgomery County residents face compounding risks from multiple natural hazard types during peak seasons. For most Montgomery County households, the highest-return preparedness step is storing critical documents in digital cloud backup combined with a pre-designated family meeting point if communication is disrupted.
Regional Context
Montgomery County's composite risk score sits 31.4 points above the Maryland county average, placing it among the more hazard-exposed counties in the state.
Is your household prepared for Montgomery County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Montgomery County, MD?
What types of natural hazards affect Montgomery County?
How does Montgomery County risk compare to the Maryland average?
Is Montgomery County at risk for flooding?
How is natural disaster risk measured?
Why is Montgomery County higher risk than average?
Data Source
Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.
Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.