DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 040531
SWODY2
SPC AC 040530

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1230 AM CDT THU APR 04 2013

VALID 051200Z - 061200Z

...THERE IS A SLGT RISK OF SVR TSTMS MUCH OF SRN FL INCLUDING THE
KEYS...

...SYNOPSIS...
A SHORTWAVE TROUGH WILL CONTINUE EWD ACROSS THE SERN
STATES...PHASING WITH THE NRN STREAM WAVE ACROSS ERN CANADA. AT THE
SURFACE...A COLD FRONT WILL EXTEND ROUGHLY FROM THE WRN ATLANTIC
ACROSS CNTRL FL AND INTO THE ERN GULF OF MEXICO WITH NUMEROUS
THUNDERSTORMS ALONG IT. COOLING ALOFT WITH THE SERN TROUGH WILL
EXTEND AS FAR S AS CUBA....WITH STRONG MID TO UPPER LEVEL FLOW
AFFECTING THE ENTIRE REGION.

ELSEWHERE...A LOW AMPLITUDE SHORTWAVE TROUGH WILL AFFECT THE GREAT
BASIN AND NRN ROCKIES WITHIN AN OTHERWISE ZONAL FLOW REGIME. COOL
AIR ALOFT AND MOISTENING MAY LEAD TO ISOLATED WEAK THUNDERSTORMS
DURING THE DAY FROM ERN ID AND UT INTO MT/WY/CO.

...SRN FL INCLUDING THE KEYS...
NUMEROUS THUNDERSTORMS ARE EXPECTED TO BE ONGOING ALONG THE COLD
FRONT...WHICH WILL BE ORIENTED PARALLEL TO THE UPPER FLOW. BY THIS
TIME...BOUNDARY LAYER DEWPOINTS OF 68-70 F SHOULD BE IN PLACE
PROVIDING PLENTY OF INSTABILITY GIVEN COOL TEMPERATURES ALOFT. WITH
STRONG DEEP LAYER SHEAR...A LINE OF SEVERE THUNDERSTORMS IS EXPECTED
WITH DAMAGING WINDS AND HAIL LIKELY. VEERED LOW LEVEL FLOW AS WELL
AS LINEAR STORM MODE IS EXPECTED TO MITIGATE ANY TORNADO THREAT. A
FEW BOWING SEGMENTS COULD PRODUCE PARTICULARLY STRONG WIND GUSTS.

..JEWELL.. 04/04/2013

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