SPC 0100Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0628 PM CST Wed Feb 17 2021

Valid 180100Z - 181200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE
NORTH-CENTRAL GULF COAST...

...SUMMARY...
Isolated severe storms are possible across the central Gulf Coast
through tonight.

...Central Gulf Coast...
A cool and stable surface air mass resides over land as of 01Z, the
exception being coastal southeast LA where dewpoints have risen into
the upper 50s and lower 60s F. Strong warm advection profiles will
persist tonight ahead of a weak surface low which is forecast to
skirt the LA/MS/AL coasts tonight, with 850 mb winds to 50 kt. This
low may eventually make it inland across coastal AL or the western
FL Panhandle, where surface-based storms with a threat of damaging
gusts or a tornado will be possible. The northern bounds of any
severe threat will strongly depend on boundary layer air mass
recovery. Shear will remain quite favorable for supercells and
tornadoes, conditional on the instability.
 
For more information see mesoscale discussion 112.

..Jewell.. 02/18/2021

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