Charles H. Bronson, Commissioner    -    James R. Karels, Director
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Seasonal KBDI Values in Florida

Weather data over a 35 year period was examined to determine average Keetch-Byram drought index (KBDI) values for each region of the state on a seasonal basis. These average KBDI values are given in the following table as the "NORMAL" classification. Departures from this average value were related to fire activity to determine the breakpoints for the other classes. 

NORTH

(Field Units 1-7)
  WINTER SPRING SUMMER FALL
VERY LOW 0-160 0-190 0-220 0-180
LOW 161-220 191-260 221-300 181-240
NORMAL 221-390 261-460 301-500 241-420
MODERATE 391-500 461-600 501-640 421-540
SEVERE 501-800 601-800 641-800 541-800

CENTRAL

(Field Units 8-14)
  WINTER SPRING SUMMER FALL
VERY LOW 0-100 0-200 0-160 0-160
LOW 101-180 201-280 161-240 161-220
NORMAL 181-400 281-530 241-460 221-400
MODERATE 401-540 531-700 461-620 401-530
SEVERE 541-800 701-800 621-800 531-800

SOUTH

(Field Units 15-18)
  WINTER SPRING SUMMER FALL
VERY LOW 0-230 0-260 0-150 0-220
LOW 231-300 261-340 151-200 221-270
NORMAL 301-490 341-550 201-350 271-420
MODERATE 491-630 551-700 351-450 421-510
SEVERE 631-800 701-800 451-800 511-800

 
 
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