FEMA rates relative ice storm risk for Hillsborough County as very high and reports FEMA annualized frequency of 2.139 per year for the area.
FEMA summary
FEMA's profile for Hillsborough County reports FEMA annualized frequency of 2.139 per year for ice storm. FEMA's relative risk rating for the area is very high; the annualized frequency is a separate measure.
Hazard metrics cover FEMA county-equivalent geographies rather than individual addresses or parcels. Use local or state hazard maps before making a property, insurance, retrofit, or evacuation decision.
Select a hazard to inspect FEMA's figures for Hillsborough County.
Ice Storm
FEMA combines its area-wide loss estimate and community data in this relative rating. Event frequency appears separately below.
Relative FEMA score
98.9/100
Occurrence thresholds vary by hazard. The FEMA methodology defines the value for each hazard.
The area loss estimate combines FEMA's modeled losses to buildings, population, and agriculture across Hillsborough County. It is not an estimate for a home or address.
City risk summary
For Manchester, FEMA rates ice storm risk for Hillsborough County as very high, with a relative score of 98.9/100. The next highest relative scores are lightning at 92.2/100 and hurricane at 91.4/100.
Using FEMA data for Hillsborough County, Manchester is tied #1 among 3 covered New Hampshire entries for ice storm risk; 2 entries share that score. Nashua is about 16 straight-line miles from the Manchester map point and uses the same FEMA geography.
For homeowners and movers
Preparedness actions
Living in Manchester? Learn how to handle water storage, sanitation, and security in a small space.
The map shows Manchester. All FEMA figures on this page cover Hillsborough County.
The FEMA figures cover Hillsborough County. Address-level conditions require local maps, building records, and property details.
FEMA rates relative ice storm risk for Hillsborough County as very high. Its FEMA annualized frequency is 2.139 per year. Damage at a specific address also depends on the building, soil, elevation, and exact hazard zone.
Among 3 New Hampshire cities covered by this directory, Manchester is Tied #1 for relative ice storm risk based on FEMA's score for Hillsborough County. 2 covered cities share this rank because they use the same FEMA geography. Homes within Manchester can have different soil, elevation, construction, and hazard-zone conditions.
In FEMA's data for Hillsborough County, the highest relative ratings are Ice Storm (Very High), Lightning (Relatively High), and Hurricane (Relatively Moderate). FEMA uses estimated losses and community data along with event frequency when assigning these ratings.
The hazard numbers cover Hillsborough County. For an individual home, check local fault, flood, fire, evacuation, and building records for the exact address.
FEMA gives Hillsborough County an overall relative risk rating of relatively moderate. Conditions at a specific home depend on its hazard zones, building type, maintenance, insurance, and access to evacuation routes and emergency services.
Start with this step: Confirm the exact hazard using official local maps before making property or insurance decisions. Know how local officials issue warnings and evacuation instructions. Use Ready.gov Be Informed and local emergency guidance for a complete plan.
Distances are measured between city coordinates.
| City | Distance | Ice Storm rating | Relative score |
|---|---|---|---|
| Nashua, NH | 16 mi | Very High | 98.9 |
| Lawrence, MA | 24 mi | Relatively High | 85.3 |
| Lowell, MA | 25 mi | Relatively High | 91.6 |
| Portsmouth, NH | 34 mi | Relatively Moderate | 75.3 |
| Leominster, MA | 36 mi | Very High | 97.2 |
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Hazard metrics come from FEMA National Risk Index v1.19.0 (March 2023). City population and coordinates come from SimpleMaps US Cities Database. For current conditions, use official local maps, warnings, inspections, and professional advice.