Severe Storm Outlook Narrative (AC)
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ACUS03 KWNS 210604
SPC AC 210603

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
1203 AM CST Tue Nov 21 2017

Valid 231200Z - 241200Z


A few general thunderstorms are expected across the Florida
Peninsula on Thursday.

...Synopsis and Discussion...
An upper ridge will be shunted southwestward off the CA/Baja coast
as a potent shortwave trough drops southeastward across the northern
Rockies. At the surface, a dry air mass will remain over much of the
West and the Plains as low pressure deepens over south-central
Canada. As a result of the dry air, thunderstorms are not expected
with this system.

Elsewhere, an upper low will remain over the central Gulf of Mexico,
with modest southwesterly flow aloft across FL. Numerous storms are
likely over the eastern Gulf of Mexico near a surface low. Farther
east over land, moisture will overspread the area but with minimal
instability present. A few storms are expected as a result of
heating, but conditions do not appear to favor severe storms due to
lack of a forcing mechanism.

..Jewell.. 11/21/2017

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