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4. NF in MississippiSupplement 5140-93-27 Parameters - Dormant Season Understory
Temperature: <= 72
RH: 30-60%
20ft wind speed: 5-15mph
10 hr fuel moisture: 7-15%
KDBI: <300
Ignition probability: <60
NFDRS: Class day A-C
19. Transport Winds Average horizontal wind speed and direction between the surface and the mixing height
20. Mixing Height The height below which relatively vigorous mixing in the atmosphere is taking place