Severe Storm Outlook Narrative (AC)
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ACUS01 KWNS 231939
SWODY1
SPC AC 231937

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0137 PM CST Thu Nov 23 2017

Valid 232000Z - 241200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE FLORIDA PENINSULA...

...SUMMARY...
A few strong to severe thunderstorms are possible across the central
and southern Florida Peninsula today.

...DISCUSSION...
No changes are made to the outlook for this issuance.

..Broyles.. 11/23/2017

.PREV DISCUSSION... /ISSUED 1004 AM CST Thu Nov 23 2017/

...FL...
Showers and thunderstorms continue to affect the FL peninsula today,
as an upper trough moves across the region.  The strongest upper
forcing and vertical shear is occurring in vicinity of the surface
baroclinic zone from north of TPA to north of MLB.  Isolated cells
may occasionally intensify to strong/severe levels in this corridor
today with gusty winds, small hail, and perhaps a tornado.  Vertical
shear profiles will slowly weaken through the day as cyclogenesis
occurs off the east coast, veering and weakening low level winds.
This combined with substantial cloud cover and only weak CAPE lead
to maintenance of the MRGL risk category.

Farther south, parameters are less favorable for organized severe
storms.  However, slightly higher instability values and more
favorable diurnal timing of convection may lead to a few strong
cells capable of gusty winds. Therefore no changes to the outlook
have been made to this area.

$$


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