WINDEX Calculator
WINDEX (WI) is computed as follows:
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) = Lapse rate from melting level to surface = (°C/km)
WI = = maximum wind gust (knots)