FEMA rates relative heat wave risk for Mesa County as relatively moderate and reports FEMA annualized frequency of 0.099 per year for the area.
FEMA summary
FEMA's profile for Mesa County reports FEMA annualized frequency of 0.099 per year for heat wave. FEMA's relative risk rating for the area is relatively moderate; 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 Mesa 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
91.9/100
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 Mesa County. It is not an estimate for a home or address.
City risk summary
For Grand Junction, FEMA rates heat wave risk for Mesa County as relatively moderate, with a relative score of 91.9/100. The next highest relative scores are wildfire at 86.3/100 and riverine flooding at 77.7/100.
Using FEMA data for Mesa County, Grand Junction is #1 among 16 covered Colorado entries for heat wave risk.
For homeowners and movers
Preparedness actions
Living in Grand Junction? Learn how to handle water storage, sanitation, and security in a small space.
The map shows Grand Junction. All FEMA figures on this page cover Mesa County.
The FEMA figures cover Mesa County. Address-level conditions require local maps, building records, and property details.
FEMA rates relative heat wave risk for Mesa County as relatively moderate. Its FEMA annualized frequency is 0.099 per year. Damage at a specific address also depends on the building, soil, elevation, and exact hazard zone.
Among 16 Colorado cities covered by this directory, Grand Junction is #1 for relative heat wave risk based on FEMA's score for Mesa County. Homes within Grand Junction can have different soil, elevation, construction, and hazard-zone conditions.
In FEMA's data for Mesa County, the highest relative ratings are Heat Wave (Relatively Moderate), Wildfire (Relatively Moderate), and Riverine Flooding (Relatively Moderate). FEMA uses estimated losses and community data along with event frequency when assigning these ratings.
The hazard numbers cover Mesa County. For an individual home, check local fault, flood, fire, evacuation, and building records for the exact address.
FEMA gives Mesa County an overall relative risk rating of very low. 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.
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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.