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Flood
High
High Hazard (Pink)
High hazard flood zones have at least a 1% annual chance of flooding to the shown footprint and are commonly referred to as 100-year flood zones
Moderate
Moderate Hazard (Yellow)
Moderate hazard flood zones have at least a 0.2% annual chance of flooding to the shown footprint and are commonly referred to as 500-year flood zones.
Earthquake
50
50-year (Indigo)
A ≥ 2% annual probability of damaging earthquake ground motion. This represents a Severe relative risk.
100
100-year (Red)
A 1 to 2% annual probability of damaging earthquake ground motion. This represents a High relative risk.
250
250-year (Orange)
A 0.4 to 1% annual probability of damaging earthquake ground motion. This represents a Moderate relative risk.
500
500-year (Green)
A 0.2 to 0.4% annual probability of damaging earthquake ground motion. This represents a Moderate relative risk.
>500
>500-year (White)
A < 0.2% annual probability of damaging earthquake ground motion. This represents a Low relative risk.
No Data
No Data (Striped)
Hail
(U.S. only)
Moderate
Moderate (Green)
The Moderate hail zone is based on an equivalent hail size of ≤ 1.75 in. (44mm) over a 15-year return period.
Severe
Severe (Pink)
The Severe hail zone is based on an equivalent hail size of > 1.75 in. (44mm) and ≤ 2 in. (51mm) over a 15-year return period.
Very Severe
Very Severe (Dark Pink)
The Very Severe hail zone is based on an equivalent hail size of > 2 in. (51mm) over a 15-year return period.
Freeze
100-Year Daily Minimum Temperature
> 20°F / -6.7°C
20°F / -6.7°C
15°F / -9.4°C
10°F / -12.2°C
5°F / -15°C
0°F / -17.8°C
-5°F / -20.6°C
-10°F / -23.3°C
-15°F / -26.1°C
-20°F / -28.9°C
-25°F / -31.7°C
-30°F / -34.4°C
-35°F / -37.2°C
-40°F / -40°C
-45°F / -42.8°C
-50°F / -45.6°C
-55°F / -48.3°C
-60°F / -51.1°C
-65°F / -53.9°C
-70°F / -56.7°C
-75°F / -59.4°C
≤ -80°F / -62.2°C
About NatHaz Maps
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