Pre-monsoon Thunderstorm Season Climatology of Convective Available Potential Energy (CAPE) and Convective Inhibition (CIN) over Eastern India

The present work analyses climatological variations of Convective Available Potential Energy (CAPE) and Inhibition (CIN) over the eastern India (Odisha, West Bengal Jharkhand) during pre-monsoon season, where thunderstorms are frequent disastrous. utilises European Centre for Medium-Range Weather Forecast (ECMWF) reanalysis data: ERA-5 1987-2016, supplemented with information about thunderstorm occurrences region from Meteorological Department (IMD). CAPE CIN values can differentiate days (TD) non-thunderstorm (NTD), favourable conditions convective weather on region, evident by CIN. coastal areas Odisha Bengal, along Jharkhand bordering northern have higher lower values. trend analysis has been performed using non-parametric Mann-Kendall test, which shows an apparent transformation indices time different regions states TD NTD. increasing districts whole 12 UTC NTD cases show a decreasing (both 00 UTC) Bengal. Odisha, whereas, trends positive negative entire state For Jharkhand, both NTD, whereas TD, increasing/decreasing visible. complements observations occurrence to understand potential season.