CIMMS NearCast 780mb Theta E product depicted decreasing
values from 15 UTC (first image – around 329 K in NW OH) to 19 UTC (second
image – around 327 K in NW OH) on May
13. Storms seemed to decrease in
coverage and intensity 18-20 UTC in NW OH.
The decrease in mid level moisture around 780 mb may have caused the
decrease in storm coverage and intensity.
The GOES Vertical Theta-e Differential Mid-Low product
showed an increase 15 to 19 UTC from -5 K to +1 K, which may have helped to
cause the decrease in storm coverage and intensity.
Michael Scotten
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