SPC AC 190552
Day 2 Convective Outlook RESENT 1
NWS Storm Prediction Center Norman OK
1152 PM CST Tue Jan 18 2022
Valid 201200Z - 211200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not forecast across the contiguous United
States on Thursday.
...Synopsis and Discussion...
A large-scale, positively tilted upper trough should develop slowly
from the central to eastern CONUS on Thursday. At the surface, a
large area of high pressure will be present over much of the Plains
and MS Valley, with a cold front located across parts of the central
Gulf Coast states. With the exception of southern AL and the FL
Panhandle vicinity, this front should move offshore fairly quickly
Thursday morning. Showers with embedded thunderstorms will probably
be ongoing at the start of the period along/near the front over
portions of LA/MS/AL. This activity should move generally
east-southeastward in tandem with the front through the day.
Although modest low-level moisture should be present ahead of the
front very near the coast of AL and the FL Panhandle, instability is
forecast to remain quite weak owing to modest diurnal heating and
poor lapse rates. Weak low-level convergence along the front and a
large component of front-parallel flow aloft should also hamper
overall thunderstorm coverage. Due to these limiting factors, the
potential for even strong convection currently appears low across
this region before the front clears the coast by late Thursday
afternoon.
Otherwise, low-level moisture is expected to gradually return
northward across parts of southern/central FL through the period.
Isolated thunderstorms may occur across this area, mainly near the
coast, as this process occurs.
..Gleason.. 01/19/2022
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