A thunderstorm or cloud tower which is not purely vertical but instead exhibits a slanted or tilted character. It is a sign of vertical wind shear, a favorable condition for severe storm development.
TILTED STORM OR TILTED UPDRAFT
Meaning of TILTED STORM OR TILTED UPDRAFT in English
Weather and meteorology English vocabulary. Английский словарь погоды и метеорологии . 2012