An objective evaluation of two instability indices associated with forecasting convective storms over the North and Central Greece

Abstract

Using different methodologies, but the same set of data, two stability indices were derived, with the aim to forecast convective intensities, showers, thundershowers, and hailstorms, over the north and central area of Greece. The indices were derived as analytical expressions of four suitably selected predictor variables, based upon theoretical and statistical arguments.

The objective of this study is to use a statistically acceptable independent set of data in order to objectively evaluate the creditability of both indices. This will be done by examining the behavior of both indices, and also by performing comparisons between the indices themselves, and the indices against the predicted variable measured in situ by S-band weather radar.