STORM TRACK: January 31, 1979 (Volume 2 Issue 2)

Jan. 27, 1978: Start of asteam vent vortex in -4 deg C air; this stage lasting 4 sec. as a loose helical formation.

Turbulent vortex for l-2 sec.

...becomes a 10 meter tall, smooth and straight vortex, lasting 3-5 sec. at Catholic University in Washington, D.C. ---Contributed by Charles Vlcek