WINDEX Calculator


WINDEX (WI) is computed as follows:


windex equation

Enter values for the following variables, then click Calculate.

HM = height of the melting level = (km)

QL = mean mixing ratio in lowest 1 kilometer = (g/km)

QM = mixing ratio at melting level = (g/km)

gamma = Lapse rate from melting level to surface = (°C/km)



WI = = maximum wind gust (knots)