Craven-Wiedenfeld Aggregate Severe Parameter
This aggregate parameter is the sum of 33 individual weighted parameters, ranging from mandatory pressure level winds, temperature and moisture, to CAPE and vertical shear. Typical ranges of values were established for each parameter in association with significant tornado (EF2+) events, and a numerical weight of 0-3 was assigned to each parameter. If all parameters are consistent with historical EF2+ tornado events, the CWASP total will reach a maximum value of 99. The majority of EF2+ tornadoes have occurred with CWASP values above about 70.
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