translate English to French: It is often associated with extreme convective weather (tornadoes, severe thunderstorms, squalls, etc.) in the summer and with storms of freezing precipitaion or blizzard conditions in the winter.
Il est souvent associé aux conditions extrêmes de temps convectif (tornades, orages violents, grains, etc.) en été et, l'hiver, aux précipitations verglaçantes et aux blizzards.