Spiral Cloud Band Associated with a Tornado
Alexander Sadowski 1
1 Forecasts and Synoptic Reports Division, U.S. Weather Bureau, Washington, D.C.
The radarscope photographic sequence, by far the best example on record, reveals a spirally banded structure about 10 miles in diameter which is similar to spiral bands of hurricanes ranging as far as 250 miles and to the banded cloud structure of well-developed storms of 1000 miles as photographed by Tiros I.