Sunday, March 14, 2010

DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 141721
SWODY2
SPC AC 141720

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1220 PM CDT SUN MAR 14 2010

VALID 151200Z - 161200Z

...NO SVR TSTM AREAS FORECAST...

...TX BIG BEND REGION...
COMPACT SHORTWAVE TROUGH/CLOSED LOW MOVING SEWD INTO NM DURING DAY 1
PERIOD IS EXPECTED TO UNDERGO WEAKENING ON MONDAY AS IT MAINTAINS A
POSITIVE-TILT TRACKING INTO SW TX AND THE LOWER RIO GRANDE VALLEY.
BAND OF 50-65 KT WLY MIDLEVEL FLOW WILL TRANSLATE THROUGH THE BASE
OF THIS TROUGH ACROSS NRN MEXICO TO DEEP S TX ON DAY 2. SELY LOW
LEVEL WINDS THAT ARE FAVORABLE FOR MOISTURE RETURN INTO THE LOWER
HALF OF THE RIO GRANDE VALLEY DURING DAY 1 ARE EXPECTED TO BACK TO
E/NELY ON MONDAY AS HIGH PRESSURE BUILDS SWD INTO THE SRN
PLAINS/NWRN GULF. THIS IS EXPECTED TO SHUNT GREATER MOISTURE RETURN
INTO NERN MEXICO AWAY FROM THE TX SIDE OF THE INTERNATIONAL
BORDER...WITH LIMITED MOISTURE RETURN INTO THE TX BIG BEND REGION
/MID-UPPER 40S SURFACE DEWPOINTS/. MASS FIELDS AND COOLING MID
LEVEL TEMPERATURES ATTENDANT TO SHORTWAVE TROUGH SUGGEST GREATEST
POTENTIAL FOR DEEP CONVECTION SHOULD SPREAD FROM SERN NM/WRN TX
MONDAY MORNING INTO THE TX BIG BEND REGION AND NERN CHIHUAHUA/NRN
COAHUILA MEXICO. ALTHOUGH INSTABILITY IS EXPECTED TO BE WEAK
/MUCAPE AOB 500 J/KG/...STEEP MID LEVEL LAPSE RATES AND EFFECTIVE
BULK SHEAR 30-35 KT SUGGESTS A FEW STRONGER STORMS MAY OCCUR BY PEAK
HEATING INTO THE TX BIG BEND REGION...WITH SOME THREAT FOR HAIL NEAR
1 INCH IN DIAMETER.

..PETERS.. 03/14/2010

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