Terms and data credits
Last updated October 9, 2026
Not an official forecast
Landfall puts official forecasts and maps together for your address and adds its own estimates: the wind at your home, how long the storm lasts there, and your chance of flooding. Those estimates can be wrong. Forecasts change with every advisory, and conditions at your home can be worse than any forecast.
Evacuation orders and instructions from your local officials always come first. For official information, go to the National Hurricane Center, your local National Weather Service office and your county emergency management office. In an emergency, call 911.
Using Landfall
Landfall is free to use. It's provided as is, without any warranty, and we aren't liable for decisions made with it or for losses that follow. Please don't scrape it or send automated traffic; it relies on public services that need to stay available to everyone during a storm.
We may change or stop the service, or these terms, at any time. The date above shows the latest change.
Where the data comes from
- Storm forecasts, cones, wind radii, wind probabilities, arrival times and storm surge maps from the National Hurricane Center (NOAA).
- Hourly forecasts and alerts from the National Weather Service; rainfall outlooks from the Weather Prediction Center; river forecasts from the National Water Prediction Service.
- Past storm tracks from NHC's HURDAT2 best-track archive.
- Flood zones from FEMA's National Flood Hazard Layer; open shelters from FEMA's shelter system, shared with the American Red Cross.
- Ground elevation from the U.S. Geological Survey.
- Evacuation zones from state and county emergency management agencies. Each briefing names the agency and links to its official lookup.
- Nearby water, trees, hospitals and other places from OpenStreetMap contributors, available under the Open Database License.
- Maps and address search by Google.
NOAA, NWS, FEMA and USGS data are public. None of these agencies made, reviewed or endorse Landfall.
Contact
Landfall is run by Dark Matter Labs. Questions go to ander@dark.tech.