Unlikely? More so than Pitots filling with powdery ice? Prolly. Can you quote me a velocity for UP/DOWN air mass in a fully developed Cell? Or in its vicinity? I'm going to guess 100 knots. You? If not symmetrical, this movement can be quite a threat to life in the Flight Level?
Hardly supersonic, 100 knots (vertical) can deflect an AoA vane (s) what, five degrees?