ACUS03 KWNS 110727
SWODY3
SPC AC 110726

Day 3 Convective Outlook  
NWS Storm Prediction Center Norman OK
0226 AM CDT Wed Sep 11 2024

Valid 131200Z - 141200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not yet forecast on Friday.

...AL/GA/TN vicinity...
The remnants of TC Francine are expected to decay in place near the
AR/TN border vicinity on Friday, with greater weakening of low-level
winds relative to Thursday. Still, a belt of adequate low-level
southeasterlies may persist during the morning to afternoon over a
portion of the southern Appalachians towards the Lower OH Valley. A
mesoscale corridor of modest low-level SRH coincident with weak
surface-based instability may develop during the day. This corridor
will likely be narrow, with a drier air mass/veered low-level winds
to its west and cooler temps/lower mean mixing ratios to its
northeast. Confidence is not great enough yet to delineate a
low-probability tornado threat.

...Central Dakotas to the central High Plains...
As the primary shortwave impulse and attendant surface cyclone
advance north-northeast over SK to western MB, its trailing Pacific
cold front should move east towards the central Dakotas to central
High Plains by Friday afternoon. Boundary-layer moisture will be
limited ahead of the front to the west of decaying Francine, but may
be adequate for isolated to widely scattered thunderstorms near the
front during the late afternoon and early evening. Mid-level winds
will be strongest over ND, but largely parallel to the front and
instability appears weakest here. Greater boundary-layer heating and
modestly enhanced moistening should occur in the central High
Plains, but neutral to weak mid-level height rises and modest
deep-layer shear will be limiting factors. While locally strong
gusts are possible, this threat appears insufficient for a
low-probability severe highlight.

..Grams.. 09/11/2024

$$