FEMA rates relative heat wave risk for Lehigh County as relatively high and reports FEMA annualized frequency of 1.239 per year for the area.
FEMA summary
FEMA's profile for Lehigh County reports FEMA annualized frequency of 1.239 per year for heat wave. FEMA's relative risk rating for the area is relatively 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 Lehigh County.
Heat Wave
FEMA combines its area-wide loss estimate and community data in this relative rating. Event frequency appears separately below.
Relative FEMA score
96.2/100
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 Lehigh County. It is not an estimate for a home or address.
City risk summary
For Allentown, FEMA rates heat wave risk for Lehigh County as relatively high, with a relative score of 96.2/100. The next highest relative scores are winter weather at 96.1/100 and strong wind at 94.6/100.
Using FEMA data for Lehigh County, Allentown is #2 among 9 covered Pennsylvania entries for heat wave risk. Reading is about 30 straight-line miles from the Allentown map point; its FEMA figures cover Berks County.
For homeowners and movers
Preparedness actions
Living in Allentown? Learn how to handle water storage, sanitation, and security in a small space.
The map shows Allentown. All FEMA figures on this page cover Lehigh County.
The FEMA figures cover Lehigh County. Address-level conditions require local maps, building records, and property details.
FEMA rates relative heat wave risk for Lehigh County as relatively high. Its FEMA annualized frequency is 1.239 per year. Damage at a specific address also depends on the building, soil, elevation, and exact hazard zone.
Among 9 Pennsylvania cities covered by this directory, Allentown is #2 for relative heat wave risk based on FEMA's score for Lehigh County. Homes within Allentown can have different soil, elevation, construction, and hazard-zone conditions.
In FEMA's data for Lehigh County, the highest relative ratings are Heat Wave (Relatively High), Winter Weather (Relatively High), and Strong Wind (Relatively High). FEMA uses estimated losses and community data along with event frequency when assigning these ratings.
The hazard numbers cover Lehigh County. For an individual home, check local fault, flood, fire, evacuation, and building records for the exact address.
FEMA gives Lehigh 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 | Heat Wave rating | Relative score |
|---|---|---|---|
| Reading, PA | 30 mi | Relatively High | 95.5 |
| Philadelphia, PA | 44 mi | Very High | 99.9 |
| Trenton, NJ | 45 mi | Relatively High | 98.2 |
| Scranton, PA | 57 mi | Relatively Low | 55.6 |
| Lancaster, PA | 58 mi | Relatively Moderate | 89.8 |
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View productHazard 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.