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Massachusetts · Risk Readiness
Before the emergency — maps, tools, and the honest picture of what Massachusetts throws at different parts of the state.
See MA hazardsMA hazard profile
Boston's most defining weather hazard. The winter of 2014-2015 dropped a record 110.6 inches on Boston — the snowiest winter in recorded history — paralyzing the MBTA for weeks and costing $1B+ in economic damage. Major blizzards (26+ inches) hit Massachusetts several times per decade. The February 2013 Nemo blizzard dropped 25 inches in 24 hours and produced hurricane-force coastal winds. Massachusetts's 1,500 miles of coastline are increasingly vulnerable as sea levels rise. Boston's harbor floods during major nor'easters and hurricane remnants — the January 2018 nor'easter produced the highest water levels at Boston Harbor since 1978. The South Shore, Cape Cod, and the Islands (Martha's Vineyard, Nantucket) face significant surge exposure from Atlantic storms. The Connecticut, Merrimack, and Blackstone rivers flood regularly. Tropical Storm Irene (2011) caused $120M in damage across western MA. The 2006 Mother's Day floods killed 1 person and caused $100M in damage in eastern Massachusetts. Urban flooding in Boston's low-lying neighborhoods and Worcester's valleys is increasingly common.
Ice accumulation causes prolonged power outages and road closures across the state.
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Flash floods, river flooding, and coastal surge affect low-lying areas and river corridors.
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Occur across most of the state, often embedded in severe thunderstorm lines and tropical systems.
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Extreme heat events endanger vulnerable residents and stress power infrastructure.
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Official tools
Enter your address to see your flood zone designation and insurance requirements.
Source: FEMA
Real-time earthquake activity and seismic hazard maps for your region.
Source: USGS
Your property's wildfire exposure score based on vegetation, terrain, and proximity to wildland.
Source: USFS
Real-time river levels and flood stage by county.
Source: USGS WaterWatch
Weekly drought conditions by county.
Source: US Drought Monitor
Water quality guidance for households on private wells.
Source: EPA
Insurance gaps
Standard homeowner's policies in Massachusetts exclude flood damage. Flood insurance through the NFIP has a 30-day waiting period — it cannot be purchased when a storm is forecast. Check your declarations page annually to confirm your coverage limits and deductibles.
Not in your standard policy
Flood damage — requires NFIP or private flood policy
Earthquake damage — requires separate endorsement
Sewer & drain backup — requires endorsement ($50–$100/yr)
Landslide / mudflow — generally excluded
Next steps
During an emergency
NC emergency contacts, alert signups, and real-time information.
Local EmergencyGet prepared
Step-by-step actions based on the hazards that apply to Massachusetts.
MA Checklists