Terms of use
What StormWorn is, what it is not, and how you may use it.
Updated 2026-11-09
Using the site
StormWorn is a free reference to the recorded natural-hazard and weather history of U.S. counties and cities. By using it you accept these terms. There are no accounts and nothing to sign up for.
A record, not a forecast
Every page describes what federal agencies have recorded in the past. It is not a forecast, a warning, a risk rating, an insurance quote, or professional, legal or financial advice. For current conditions and warnings, follow the National Weather Service and your local emergency managers.
Accuracy
The figures are computed from public federal datasets, which have gaps, revisions and known errors of their own. We check them and correct mistakes openly on the corrections page, but the site is provided as it is, without any warranty that it is complete, current or free of error. Each page names its sources and the date of the data it uses.
Federal sources
The underlying data comes from NOAA, the National Hurricane Center, the Storm Prediction Center, USGS, the U.S. Forest Service, FEMA and the U.S. Census Bureau. No agency endorses StormWorn. The datasets and their terms are listed on the sources page.
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Reusing our work
You are welcome to link to any page and to quote figures with a citation that credits StormWorn and the federal source named on the page; the contact page shows the form. Federal source data is generally in the public domain and remains free to use from the agencies directly. For anything beyond citation, such as republishing our maps, charts or tables, write to us first.
Please do not scrape the site at a rate that degrades it for other readers.
Advertising and links
StormWorn is supported by advertising served by Google and its partners once ads are enabled. We do not control the content of ads or of the outside sites we link to, and a link or an ad is not an endorsement. How advertising uses cookies is explained in the privacy policy.
Liability
To the extent the law allows, StormWorn is not liable for any loss or damage arising from use of the site or reliance on its contents. Decisions about property, insurance, travel or safety should rest on official sources and qualified advice.
Changes
If these terms change, the date at the top changes with it. This version is dated 2026-11-09.
Contact
Questions about these terms: write to hello@stormworn.com.