West Islip, New York: natural disaster risk
How exposed West Islip is to floods, storms and other hazards, from FEMA and NOAA records for Suffolk County.
West Islip is a community of 26,865 people in Suffolk County, New York. FEMA's National Risk Index rates Suffolk County relatively high for natural hazards overall, higher than most of the US. The costliest hazards there are inland flooding, hurricane and coastal flooding, with about $321 million in expected losses a year across the county. The weather service has logged 873 storm reports in the county since 1958, including 32 tornadoes and 251 floods. NOAA hurricane records show 13 hurricanes and 25 tropical storms passing within 65 miles of the county's center, 3 of them major. About 5.4% of homes in the county carry federal flood insurance.
Risk figures are for Suffolk County. FEMA National Risk Index December 2025; NOAA Storm Events; US Census Bureau ACS 2020 to 2024. Updated November 6, 2026.
Top risks in West Islip
Full Suffolk County report ›- Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
- Price a flood policy now. Most new federal policies take 30 days to start.
- Know your evacuation zone and route before June 1.
- Ask about roof age, shutters and the separate wind or hurricane deductible on your home policy.
- Learn your evacuation zone; it is set by surge risk, not by distance from the beach.
- Ask about flood insurance even outside a mapped high-risk zone.
All hazards
| Hazard | Rating | A year |
|---|---|---|
| Inland flooding | $193M | |
| Hurricane | $43M | |
| Coastal flooding | $25M | |
| Earthquake | $21M | |
| Cold wave | $14M | |
| Heat wave | $7M | |
| Strong wind | $6M | |
| Tornado | $4M | |
| Lightning | $3M | |
| Ice storm | $2M | |
| Winter weather | $2M | |
| Wildfire | $265K |
Homes in West Islip
Older homes and mobile homes usually take more damage in storms, floods and earthquakes. Ask about roof age, flood history and retrofits before you buy or rent.
Strongest tornadoes in Suffolk County
Common questions about West Islip
Is West Islip safe from natural disasters?
West Islip is in Suffolk County, which FEMA's National Risk Index rates relatively high overall, higher than most of the US. The biggest hazards are inland flooding, hurricane, coastal flooding. No place is free of risk, so check the flood map and insurance for any home you consider.
What natural disasters happen in West Islip?
By expected yearly losses in Suffolk County, the top hazards are inland flooding (High), hurricane (High), coastal flooding (Very High). Suffolk County has been part of 32 federal disaster or emergency declarations for natural events.
Does West Islip get tornadoes?
Yes. NOAA records list 32 tornadoes in Suffolk County since 1950; the strongest was an F2 tornado on August 8, 1999 near Mattituck. FEMA rates tornado risk in the county moderate.
Do I need flood insurance in West Islip?
Standard home insurance does not cover floods. In Suffolk County, about 5.4% of homes have federal flood insurance, and FEMA rates inland flooding risk high. Check the FEMA flood map for your address and get a quote even outside a high-risk zone.