From Miami NWS - Wednesday morning update:

".UPDATE...
MASSIVE CLOUD FIELD CURRENTLY OVER THE EASTERN GOFMEX ASSOCIATED
WITH LARGE CONVECTIVE COMPLEX ROTATING BENEATH CUT-OFF LOW WHICH
IS OVER THE SOUTH CENTRAL GULF STATES. THIS LINE OF CONVECTION
HAS BEEN PRODUCING A TREMENDOUS AMOUNT OF LIGHTNING WITH NEARLY 800
STRIKES IN THE PAST 15 MINUTES. THE CONVECTIVE FIELD IS MOVING
EAST..."

The strong MCC will bring frequent squalls to the southwestern Florida coast Wednesday.
ED