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SPC Sep 29, 2022 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook

Day 1 Outlook Image

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0743 PM CDT Wed Sep 28 2022

Valid 290100Z - 291200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
EAST-CENTRAL FLORIDA...

...SUMMARY...
A couple tornadoes will remain possible this evening and overnight
across portions of east-central Florida, in association with
Hurricane Ian.

...Eastern and central Florida...
Hurricane Ian now inland (95 miles SSW of Orlando, Florida) per the
latest NHC advisory is forecast to make slow progress northeastward
through this evening and overnight. As surface pressure rises
rapidly behind Ian across southern and southwestern Florida tonight,
winds will continue to veer, decreasing low-level shear and tornado
potential. The strongest convection is forecast to remain mostly off
the Atlantic coast where feeder bands remain better organized away
from intruding dry mid-level air. Some of these bands may move
closer to shore through 08z as low-level flow backs in response to
approaching pressure falls with Ian's center. Hi-res guidance also
shows some additional development will remain possible off the
Atlantic coast where dewpoints in the upper 70s to low 80s F exist.
A narrow corridor of favorable buoyancy (MLCAPE 500-1000 J/kg) and
enlarged low-level hodographs may support some tornado potential
through the overnight hours across portions of coastal east-central
Florida and Cape Canaveral as the aforementioned bands of convection
approach. Inland sustainment of any supercells is much more
uncertain given weak buoyancy and rain-cooled airmass behind a
remnant frontal boundary draped across northern Florida. Still, a
couple tornadoes will remain possible with convection moving onshore
tonight before low-level flow weakens and veers.

..Lyons/Darrow.. 09/29/2022

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