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Fire Weather Data Wednesday, January 7 - 9:45 GMT Overview   Severe Radar   Watch/Warn   Outlooks   Fire Weather   Meso Discussions   Storm Reports   GFS Thundercast Wildfire Outlooks   Keetch-Byram Drought   Energy Release Component   Wildfire Detections Day 1   Day 2   Forecast   Current   Forecast   Current   U.S.F.S.   F.I.R.M.S. The KBDI attempts to measure the amount of precipitation necessary to return the soil to full field capacity. It is a closed system ranging from 0 to 800 units and represents a moisture regime from 0 to 8 inches of water through the soil layer. At 8 inches of water, the KBDI assumes saturation. Zero is the point of no moisture deficiency and 800 is the maximum drought that is possible. At any point along the scale, the index number indicates the amount of net rainfall that is required to reduce the index to zero, or saturation.

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