Dead Fuel Moisture

This is the moisture content of dead organic fuels, expressed as a percentage of the oven dry weight of the sample, that is controlled entirely by exposure to environmental conditions.

Hundred Hour Dead Fuel Moisture (100hr)

100-Hour dead fuel moisture levels are computed from a 7-day average boundary condition composed of day length, hours of rain, and daily temperature/humidity ranges. Fuel sizes range from 1 to 3 inches in diameter.

Winter conditions of snow covered fuels require that the ERC and fuel moisture graphs be temporarily discontinued. The graphs for this page are generated by FireFamily Plus. Weather station data imported into FireFamily Plus during the months of snow covered fuels does not contain all required information to generate accurate NFDRS outputs. This is due to missing Wet Fuels flag information in the imported FWX data and the FireFamily Plus program not being programmed to utilize the information imported using the FW9 format. Accurate values can be obtained from the Weather Information Management System (WIMS) - if the daily observation represents the snow covered fuels by properly “forcing” the Wet Fuels flag entry.

Most recent update: Monday, 7/8/2019.