SPC AC 191658
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1058 AM CST Wed Jan 19 2022
Valid 201200Z - 211200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not forecast across the contiguous United
States on Thursday.
...Synopsis...
A large-scale upper trough from the Great Lakes to the southern
Rockies will slowly pivot eastward across the Plains and Midwest on
Thursday. Neutral to weak height falls will occur over the southern
U.S., while a weak surface low tracks eastward along the central
Gulf Coast vicinity. A cold front will shift east along with the
surface low. Deep-layer southwesterly flow will allow for modest
moisture return along the FL Panhandle into far southern AL/GA.
However, weak diurnal heating due to abundant cloud cover and
ongoing showers/isolated thunderstorms will limit destabilization,
with only a couple hundred J/kg MLCAPE forecast near the Gulf Coast.
In the absence of stronger height falls and cooling aloft, midlevel
lapse rates also will remain poor. Additionally, organized
convection will be further limited by weak convergence along the
front, with deep-layer boundary-parallel flow in place. While
isolated thunderstorms are expected, severe thunderstorm potential
will remain low.
..Leitman.. 01/19/2022
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