SPC AC 270627
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1227 AM CST Thu Jan 27 2022
Valid 281200Z - 291200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not expected on Friday.
...Synopsis...
An amplified upper pattern is forecast to be in place across the
CONUS early Friday, consisting of an upper ridge over the western
CONUS and an upper trough over the central and eastern CONUS. The
western CONUS upper ridging is expected to dampen throughout the
period while gradually shifting eastward. The upper trough will also
shift eastward as an embedded shortwave trough progresses through
its base. This shortwave will likely deepen as it moves eastward
while also transitioning from a positive tilt on Friday to an
increasingly negative tilt by Saturday morning.
Strong forcing for ascent will accompany this shortwave trough as it
moves across the southern Plains, Lower MS Valley, and Southeast/FL.
However, predominantly offshore low-level trajectories will prevent
moisture return ahead of this shortwave, precluding the buoyancy
needed for thunderstorm development.
Some modest low-level moisture will be in place across FL, but
limited low-level convergence and displacement south of stronger
forcing for ascent should preclude thunderstorm development. A flash
or two is also possible within the warm air advection across the
coastal NC/Outer Banks, but coverage over land areas should be less
than 10 percent as the higher thunderstorm coverage remains well
offshore.
..Mosier.. 01/27/2022
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