Uses volumetric data to determine the probability of hail. These data consists of Vertically Integrated Liquid (VIL), the Melting Level, Zonal (East-West component) wind Velocity and average Relative Humidity (0 to 500 mb). The probability is determined for each column of bins within VIL in the area of surveillance and mapped in the Hail Probability Product.
Parameters
Upper limit: km Lower limit: km Humidity: % Melting level: km Zonal wind at 500 mb: m/s Range: km
Notes
• Z/W relationships is used for VIL • The upper and lower limits are the heights above and below which data in the data volume are not considered for the VIL calculation