Spatial-temporal variability of temperature stratification of the lower atmosphere layer during the development of abnormally early thunderstorms and squalls

The spatio-temporal variability of the temperature of the lower atmosphere layer during the development of abnormally early thunderstorms and squalls in the southeast of Western Siberia on the example of the surrounding area of Tomsk is analyzed. It is noted that the highest density of lightning discharges during the event under study is not over the centers of the zones with the highest temperatures, but over their peripheral parts, where large contrasts of temperature changes are observed. The time intervals that preceded the development of storm clouds are correlated with the values of the vertical temperature gradient for the territory of the IMCES SB RAS – 2.2 º/100 m and 1.4 º/100 m for the village of Anikino.