A .zip file is a "compressed" folder that bundles multiple files into one smaller package. When you download data from the National Fuel Moisture Database portal, it often arrives as a zip archive. Inside an NFMDB.zip file, you will typically find:
Spreadsheets containing moisture percentages, sampling dates, and GPS locations of stations.
The NFMD is a web-based system that allows users to access measured moisture levels for both (like green leaves and needles) and dead fuels (like fallen sticks and leaf litter).
Managing Wildfire Data: A Guide to the National Fuel Moisture Database (NFMD)
Whether you are a researcher or a curious data enthusiast, here is how to handle the file: