Tuesday, December 28, 2010

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 281559
SWODY1
SPC AC 281557

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0957 AM CST TUE DEC 28 2010

VALID 281630Z - 291200Z

...NO SVR TSTM AREAS FORECAST...

MOISTURE RETURN FROM WRN GULF INTO SRN PLAINS WILL CONTINUE THRU THE
FORECAST PERIOD AS A FAIRLY WEAK UPPER TROUGH SRN ROCKIES SHIFTS
EWD.

CURRENT SHALLOW CONVECTION ERN HALF OF TX WILL GRADUALLY INCREASE IN
RESPONSE TO ONGOING FAVORABLE PROCESSES BECOMING SUFFICIENTLY DEEP
ENOUGH BY TONIGHT FOR THUNDERSTORM DEVELOPMENT.

STEEPENING MID LEVEL LAPSE RATES ACCOMPANYING THE SRN ROCKIES TROUGH
WILL AID IN DEEPER CONVECTIVE DEVELOPMENT. HOWEVER VERY LIMITED
INSTABILITY AND CAPE WILL PRECLUDE A CONCERN FOR SEVERE STORMS THRU
THE PERIOD.

STRONG TROUGH WILL BE DEEPENING SEWD INTO WRN U.S. TONIGHT. RAPID
COOLING ALOFT AND STRONG LARGE SCALE FORCING WILL INCREASE THE RISK
OF A FEW LIGHTNING STRIKES...MAINLY AFTER 29/06Z SWD TO NRN CA
COAST.

..HALES/MEAD.. 12/28/2010

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