FEMA rates relative drought risk for Sonoma County as very high and reports FEMA annualized frequency of 30.477 per year for the area.
FEMA summary
FEMA's profile for Sonoma County reports FEMA annualized frequency of 30.477 per year for drought. 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 Sonoma County.
Drought
FEMA combines its area-wide loss estimate and community data in this relative rating. Event frequency appears separately below.
Relative FEMA score
99.8/100
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 Sonoma County. It is not an estimate for a home or address.
City risk summary
For Santa Rosa, FEMA rates drought risk for Sonoma County as very high, with a relative score of 99.8/100. The next highest relative scores are earthquake at 99.6/100 and wildfire at 98.8/100.
Using FEMA data for Sonoma County, Santa Rosa is #5 among 111 covered California entries for drought risk. Vallejo is about 34 straight-line miles from the Santa Rosa map point; its FEMA figures cover Solano County.
For homeowners and movers
Preparedness actions
Living in Santa Rosa? Learn how to handle water storage, sanitation, and security in a small space.
The map shows Santa Rosa. All FEMA figures on this page cover Sonoma County.
The FEMA figures cover Sonoma County. Address-level conditions require local maps, building records, and property details.
FEMA rates relative drought risk for Sonoma County as very high. Its FEMA annualized frequency is 30.477 per year. Damage at a specific address also depends on the building, soil, elevation, and exact hazard zone.
Among 111 California cities covered by this directory, Santa Rosa is #5 for relative drought risk based on FEMA's score for Sonoma County. Homes within Santa Rosa can have different soil, elevation, construction, and hazard-zone conditions.
In FEMA's data for Sonoma County, the highest relative ratings are Drought (Very High), Earthquake (Relatively High), and Wildfire (Relatively High). FEMA uses estimated losses and community data along with event frequency when assigning these ratings.
The hazard numbers cover Sonoma County. For an individual home, check local fault, flood, fire, evacuation, and building records for the exact address.
FEMA gives Sonoma County an overall relative risk rating of relatively high. 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 | Drought rating | Relative score |
|---|---|---|---|
| Vallejo, CA | 34 mi | Very High | 99.7 |
| Fairfield, CA | 39 mi | Very High | 99.7 |
| Richmond, CA | 40 mi | Relatively High | 99.3 |
| Vacaville, CA | 40 mi | Very High | 99.7 |
| Berkeley, CA | 46 mi | Relatively High | 98.8 |
Limited to products tagged for drought or general preparedness.
Disclosure: As an Amazon Associate, this site may earn from qualifying purchases.
Tools
18 tools in one. Essential for turning off gas valves or making repairs.
View product
Power
Pocket-sized power to keep your phone alive for emergency calls.
View product
Pets
Comprehensive kit for pets. Includes muzzle, thermometer, and bandages.
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.