The Wildfire Management Tool - WMT (v2.0) - a geo-browser that provides weather and fire behavior forecasts to ensure the safefy of firefighters and effective use of resources
Not a bug. The common non-burnable fuel models, 90-99, are intentionally prefixed with 'NB' instead of '9' for easily recognition of a non-burnable type.
NB90 is presented as NB0.