Table 9 – Example measurement and computation worksheet for fuel moisture calculations. Full computation sheet included in printable PDF of tables. SimpleFFMC Fine Fuel Moisture calculation worksheet A B C D E F G H I J K L Moisture Weather Observations Rainfall Evaporation Previous Correction Factor Correction FMC Solar Surface MC (t-1) Factor Temp RH (RMF) Factor (ECF) Rainfall Radiation Temp (MCF) Units (F) (%) (in) (W/m2) (F) (%) (%) (%) (%) (%) (%) Estimated Ref Table Ref Ref Tables 5 from local Table Ref Table 3 Ref Table 4 Reference Table 1 and 6 table 2 If no local table, use 800 Moisture content 0 if no rainfall If FMC (t-1) > for clear days, from previous over last 0 if FMC (t-1) < EQMC use Table FMC (t -1) + RMF Notes 400 for hour or EQMC if observation 30% 5, otherwise use + ECF + MCF overcast days first observation period Table 6 and 0 at night If H > G, use Calculation If H < 30, record If D = 0, record 0 Table 5 else use H+I+J+K Ref 0 Table 6 Date/Time
Table 9 – Example measurement and computation worksheet for fuel moisture calculations. Full computation sheet included in printable PDF of tables. SimpleFFMC Fine Fuel Moisture calculation worksheet A B C D E F G H I J K L Weather Observations Previous MC (t-1) Rainfall Factor (RMF) Evaporation Correction Factor (ECF) Moisture Correction Factor (MCF) FMC Temp RH Rainfall Solar Radiation Surface Temp Units (F) (%) (in) (W/m2) (F) (%) (%) (%) (%) (%) (%) Table Reference Estimated from local table Ref Table 1 Ref Table 2 Ref Table 3 Ref Table 4 Ref Tables 5 and 6 Notes If no local table, use 800 for clear days, 400 for overcast days and 0 at night Moisture content from previous hour or EQMC if first observation 0 if no rainfall over last observation period 0 if FMC (t-1) < 30% If FMC (t-1) > EQMC use Table 5, otherwise use Table 6 FMC (t -1) + RMF + ECF + MCF Calculation Ref If D = 0, record 0 If H < 30, record 0 If H > G, use Table 5 else use Table 6 H+I+J+K Date/Time
FFS_final_report_Rev2.docx