Disaster-history hazard lens
Disease outbreaks and biological incidents. Compare official county histories below while keeping FEMA administrative declarations separate from NOAA observed-event reports.
Data updated Aug 21, 2026
These counts do not measure current danger, probability, severity, loss, or personal exposure. A higher rank means only that a county has more records within the same official source and exact coverage window. FEMA and NOAA counts are never added together.
Administrative records
Federal administrative declarations that include a county designation and map to this hazard category. A declaration is a government action, not a physical-event census.
53 counties have a positive biological count in this source.
Coverage: Jan 1, 1964 – Aug 21, 2026
Rankings compare only this source and exact coverage window. Equal counts share a rank.
Observed-event reports
Distinct NOAA Storm Events records explicitly coded to a county and mapped to this hazard category. Forecast-zone and marine-zone records are excluded from county totals.
0 counties have a positive biological count in this source.
No positive noaa observed-event history count is present for this category among the atlas county profiles.
