Terms
Seaweed Radar is a free website published by Kallos Labs LLC. By using it you agree to the points below. Last changed November 14, 2026.
What you are reading
The levels on this site repeat an experimental satellite product from NOAA. They describe a risk for a long run of coast. They are not a forecast, not an inspection of any beach, and not advice to book, cancel or travel.
No promise about a beach
A low level does not mean a beach is clean, and a high level does not mean it is covered. Conditions on the sand change by the hour. Decide with other sources as well: your hotel, recent photos, people who are there.
Mistakes and gaps
The site is written by a program once a day. NOAA's map can be late or wrong, and so can our reading of it. The site is offered as it is, without warranty, and Kallos Labs LLC is not liable for losses that follow from relying on it, to the extent the law allows.
The morning report
The morning report is sold per trip through Gumroad, which takes the payment and sends the receipt. Buying it now is a pre-order: reports start in spring 2027, and none is sent before then. After you buy, tell us the beach and your trip dates by replying to the receipt.
Each report repeats NOAA’s newest risk level for the coast around your beach, with the date of that data. Everything on this page about what a level is, and is not, applies to the reports too.
Refunds follow the policy shown on the Gumroad page when you buy.
Using the pages
You may link to and quote any page with credit to Seaweed Radar. NOAA's underlying data is in the public domain; please credit NOAA as we do. Do not present our pages as NOAA's own or as an official source.