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Dormant Season Fire Risk Parameters in Mississippi

This document outlines the critical fire risk parameters for the dormant season in Mississippi. It specifies essential temperature and humidity levels, including a temperature threshold of ≤72°F, relative humidity between 30-60%, and a wind speed of 5-15 mph at 20 feet elevation. The 10-hour fuel moisture should be between 7-15%, while the Keetch-Byram Drought Index (KDBI) must be below 300, and the ignition probability should be under 60%. The NFDRS class is indicated as day A-C 19, providing vital information for fire management.

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Dormant Season Fire Risk Parameters in Mississippi

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    4. NF in Mississippi Supplement 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

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