Inter-comparison of physical processes associated with winter and non-winter hailstorms using the weather research and forecasting (WRF) model

Abstract

Hailstorms are more frequent during non-winter whereas rare during winters due to the absence of increased surface temperature or low level of moisture incursion. This study shows a inter-comparison in the dynamics of winter and non-winter hailstorms reported over New Delhi, India using numerical simulation method. Non-winter hailstorms, formed due to increased instability due to low level convection and moisture incursion. Whereas rare instability conditions form due to low level available potential energy and moisture incursion along with upper level baroclinic instability due to the presence of western disturbance, led to winter hailstorm.