Biological
Disease outbreaks and biological incidents.
- Counties with FEMA records
- 53
- Counties with NOAA records
- 0
Source-separated county records
Disaster history by hazard
Choose a hazard to compare county histories from two official sources. FEMA counts describe federal administrative declarations; NOAA counts describe county-coded observed-event reports. The two sources are never added together or converted into a risk score.
Data updated Aug 21, 2026 · 20 hazard categories with county records
History, not a forecast
A higher historical record count does not establish greater future danger, severity, loss, or personal exposure. Reporting practices, administrative decisions, and coverage periods shape these records. Use the live dashboard for current conditions.
Browse hazard categories
Only taxonomy categories with at least one positive FEMA or NOAA count in the atlas appear here. County availability can differ between sources because the datasets answer different questions.
Chemical
Chemical releases and toxic-substance incidents.
- Counties with FEMA records
- 3
- Counties with NOAA records
- 0
Coastal storm
Coastal storms, surge, and related coastal impacts.
- Counties with FEMA records
- 12
- Counties with NOAA records
- 4
Drought
Extended precipitation deficits and drought impacts.
- Counties with FEMA records
- 13
- Counties with NOAA records
- 1
Earthquake
Earthquakes and directly associated ground shaking.
- Counties with FEMA records
- 6
- Counties with NOAA records
- 0
Flood
River, flash, coastal, and other flooding.
- Counties with FEMA records
- 47
- Counties with NOAA records
- 53
Hail
Hail events reported independently of other storm hazards.
- Counties with FEMA records
- 0
- Counties with NOAA records
- 52
High wind
High wind, strong wind, and thunderstorm wind events.
- Counties with FEMA records
- 0
- Counties with NOAA records
- 52
Hurricane
Hurricanes and typhoons.
- Counties with FEMA records
- 45
- Counties with NOAA records
- 0
Landslide
Landslides, mudslides, and debris flows.
- Counties with FEMA records
- 0
- Counties with NOAA records
- 11
Lightning
Lightning events reported independently of other storm hazards.
- Counties with FEMA records
- 0
- Counties with NOAA records
- 53
Marine
Marine wind, surf, current, and lake hazards.
- Counties with FEMA records
- 0
- Counties with NOAA records
- 5
Other
Events that cannot be mapped confidently to another category.
- Counties with FEMA records
- 10
- Counties with NOAA records
- 10
Severe storm
Multi-hazard severe storms without a more specific primary category.
- Counties with FEMA records
- 50
- Counties with NOAA records
- 50
Tornado
Tornadoes, funnel clouds, and waterspouts.
- Counties with FEMA records
- 22
- Counties with NOAA records
- 51
Tropical storm
Tropical storms and tropical depressions below hurricane strength.
- Counties with FEMA records
- 6
- Counties with NOAA records
- 0
Tsunami or seiche
Tsunamis and seiches.
- Counties with FEMA records
- 1
- Counties with NOAA records
- 1
Volcanic eruption
Volcanic eruptions and associated volcanic hazards.
- Counties with FEMA records
- 1
- Counties with NOAA records
- 0
Wildfire
Wildfires and fire-management incidents.
- Counties with FEMA records
- 22
- Counties with NOAA records
- 12
Winter storm
Snow, ice, blizzards, freezes, and winter storms.
- Counties with FEMA records
- 40
- Counties with NOAA records
- 5