Hazard Overview
This hazard overview summarizes the supported hazards, scenarios, and U.S. coverage with links to additional information. For more information about the information summarized here, see:
Supported Hazard Metrics – We support hazards at the parcel and supported Census geography. See Hazard Metrics for details.
Supported Climate Scenarios – For most hazards, we provide metrics for current and future climate scenarios, but refer to Supported Climate Scenarios for details.
U.S. Coverage – Some hazards are available for the entire United States, while others are limited to specific regions. See Hazard Coverage across the United States for details.
Hazard | Summary | Scenarios | U.S. Coverage |
|---|---|---|---|
Flood Hazards | |||
Gap-free extension of FEMA 100-year floodplain | Current | All Based on available FEMA data only for AK and HI | |
FEMA 100-year floodplain | Current | All Across the U.S., about 30% has not been mapped by FEMA | |
Inundation associated with hurricane storms, storm surge, and sea level rise | Current and future | East Coast, Gulf Coast | |
Inundation at 0 feet, 1 foot, and 2 feet of sea level rise | Not scenario based | CONUS, HI | |
Extreme Heat & Precipitation Hazards | |||
Annual probability of wildfire | Current and future | All (Current) CONUS (Future) | |
Monthly probability at or exceeding drought severity of moderate, severe, and extreme | Current and future | All | |
Daily probability at or exceeding 90°, 100°, and 110°F or above | Current and future | CONUS | |
Daily probability at or exceeding 1, 2, or 4 inches or more of precipitation | Current and future | CONUS | |
Wind Hazards | |||
Annual probability of hurricane winds at or exceeding Category 1, Category 3, and Category 5 | Current and future | East Coast, Gulf Coast, HI | |
Annual probability of tornado winds at or exceeding EF0, EF2, and EF4 | Current Future reported using current metrics | CONUS | |
Annual probability of strong winds at or exceeding 40 mph, 70 mph, and 100 mph | Current Future reported using current metrics | CONUS | |
Geological Hazards | |||
Annual probability of peak ground acceleration (PGA) at or exceeding 18%g, 34%g, and 65%g | Current Future reported using current metrics | All | |