Violent squalls on 13 May 1965 we reresponsible for considerable structural damage at four well-separated locations in the Adelaide metropolitan area. Eyewitness reports indicated that the squalls at three of the sites were tornadic, but did not conclusively prove whether one or more than one tornado was responsible. The synoptic situation is discussed, and it seems that the vertical temperature profile at the time of the squalls may have changed appreciably from the convectively stable sounding at Adelaide Airport only two hours previously. The upper wind distribution suggests that the tornadoes may have formed in the region of low level relative inflow on the left-rear of the storm.
R.S. Seaman (Tue,) studied this question.