Union’s biggest natural hazard is inland flooding
Most of the natural-hazard damage FEMA expects in Union comes from inland flooding, and overall the risk is high for a U.S. community.
What stands out about Union’s weather risks
Read from FEMA’s records below. The page puts what stands out first.
Does Union flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Union. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Union isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Carroll County.How exposed is Union?
FEMA expects yearly storm and flood damage to homes and buildings here to be higher than in 62% of U.S. communities, mostly from inland flooding and hurricanes.
Rated higher than 122 of the 234 New Hampshire towns we cover.
Union is smaller than a census tract, so it shares the figures of the tract around its center.
What Union faces
Each hazard’s share of the damage FEMA expects here, and how it compares with the rest of the country.
Inland flooding
Hurricanes
Federal disasters declared here
None of the disasters declared for Carroll County shows FEMA aid or repair money reaching Union itself in FEMA’s records.
Carroll County has had 27 natural disasters declared since 1953, most often severe storms and winter storms.
Get ready for what Union actually faces
A short kit for its top hazards, what to check before you buy, and where neighbors get alerts.
- Turn around at flooded roads: a foot of moving water can carry off a car.
- Flood insurance usually takes 30 days to start, so buy it before the forecast.
- Keep papers and medicines up high, in a grab-and-go bag.
- The season runs June through November and peaks from mid-August to mid-October.
- Bring in porch furniture and anything the wind can throw.
- Fill the gas tank and charge phones before the storm arrives.
- Keep a shovel, a blanket and snacks in the car.
- Clear snow from furnace and dryer vents.
- Check on older neighbors when the power goes out.
- Look up the address on FEMA’s flood map.
- Ask the seller or landlord whether it has ever flooded, and what flood insurance costs there.
- Get a flood insurance quote early: policies usually start 30 days after you buy.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Union and its neighbors
Union ranks 2nd calmest of 3 towns around it. Tap a town to see its hazards.
Rating = expected yearly storm and flood damage as a share of what’s there, vs. U.S. communities. Flood claims = paid federal flood insurance claims on record.
Disasters here can come any time of year
The month each of Carroll County’s 27 declared disasters began, since 1953.
What these numbers can and can’t tell you
- An average, not a forecast. FEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.
- Compared by rate. “Higher than N%” compares yearly damage as a share of what’s there, so a big city isn’t rated riskier just for having more buildings.
- Money that reached town. Flood claims are matched to Union’s own flood-insurance community; household aid to the registrant’s city; repair grants to Union.
- It follows property value. FEMA’s model weighs damage to buildings, so a place that recently lost many homes can rate lower than it feels.
Storm stories
Memories, warnings and help from neighbors in Union.
Your answer becomes a post in Town Square.
Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau. Preparedness tips: Ready.gov. An average of past damage, not a forecast.