Friday, October 8, 2010

DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 081720
SWODY2
SPC AC 081719

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1219 PM CDT FRI OCT 08 2010

VALID 091200Z - 101200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
WHILE STRONGER/ACTIVE MID-LEVEL FLOW FIELD WILL REMAIN OVER CANADA
AND THE NORTHEAST U.S. THIS PERIOD...A LOW WILL CONTINUE DRIFTING
EWD INTO THE CENTRAL AND NRN PLAINS -- ESSENTIALLY CUT-OFF FROM THE
MAIN BELT OF WLYS FARTHER N.

AS THIS LOW DRIFTS SLOWLY INTO THE PLAINS...A
WEAK/INCREASINGLY-DIFFUSE SURFACE LOW IS PROGGED TO REMAIN OVER THE
PLAINS AS WELL. ELSEWHERE...A GENERALLY NONDESCRIPT SURFACE PATTERN
WILL PREVAIL THROUGH THE PERIOD.

...NRN PLAINS...
WHILE LAPSE RATES ALOFT ARE PROGGED TO STEEPEN AS AN UPPER LOW
DRIFTS EWD INTO THE CENTRAL CONUS...MEAGER BOUNDARY-LAYER MOISTURE
ACROSS THE PLAINS WILL LIMIT DESTABILIZATION POTENTIAL. ASCENT --
PARTICULARLY INVOF THE WEAKENING SURFACE LOW AND ASSOCIATED WARM
FRONT ACROSS THE NRN PLAINS/UPPER MS VALLEY -- SHOULD
SUPPORT/MAINTAIN ISOLATED TO SCATTERED SHOWERS/A FEW THUNDERSTORMS.
HOWEVER...ANTICIPATED INSTABILITY SHOULD BE GENERALLY UNSUPPORTIVE
OF VIGOROUS STORMS -- PARTICULARLY GIVEN THE EXPECTED ABSENCE OF
FAVORABLE SHEAR. WHILE MARGINAL HAIL MAY BE POSSIBLE...THREAT
APPEARS LOW ATTM.

..GOSS.. 10/08/2010

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