>SPC Day 3 forecasts

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SPC AC 070655

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0155 AM CDT FRI MAY 07 2010

VALID 091200Z – 101200Z

…SYNOPSIS…
UPR TROUGH EXPECTED TO BE ALONG THE PAC NW/CA COAST EARLY SUNDAY
WILL MIGRATE TO THE FOUR CORNERS REGION BY 12Z MONDAY. AHEAD OF
THIS FEATURE…A WARM FRONT WILL DEVELOP NWD TOWARD THE CNTRL
PLAINS/OZARKS AS PRESSURES FALL ALONG THE LEE OF THE ROCKIES.

…CNTRL/SRN PLAINS AND OZARKS REGION…
INCREASING RETURN FLOW AHEAD OF THE AFOREMENTIONED UPR TROUGH WILL
TRANSPORT 60S SFC DEW POINTS NWD THROUGH THE SRN HIGH PLAINS SUNDAY
AND SUNDAY NIGHT. ELEVATED MIXED-LAYER WILL BE ROBUST AND SFC-BASED
TSTMS PROBABILITIES IN THE BROADENING/DEEPENING WARM SECTOR WILL BE
LOW. MORE LIKELY SCENARIO WILL BE FOR INCREASING BANDS OF ELEVATED
TSTMS SUNDAY EVENING/NIGHT OVER PARTS OF THE CNTRL/SRN PLAINS AND
OZARKS ALONG THE NOSE OF A 50 KT SSWLY H85 JET. EFFECTIVE SHEAR AND
MAGNITUDE OF LAPSE RATES/MUCAPE SUGGEST THAT LARGE HAIL MAY
ACCOMPANY ISOLD STORMS.

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