SWODY1
SPC AC 281240
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0640 AM CST TUE DEC 28 2010
VALID 281300Z - 291200Z
...NO SVR TSTM AREAS FORECAST...
...TX/OK/AR...
A BROAD UPPER TROUGH OVER NORTHERN MEXICO AND AZ/NM WILL MOVE SLOWLY
EASTWARD AND ACROSS TX DURING THIS FORECAST PERIOD. SOUTHERLY LOW
LEVEL WINDS AHEAD OF THE TROUGH WILL TRANSPORT GULF MOISTURE
NORTHWARD WITH SURFACE DEWPOINTS CLIMBING INTO THE 50S AS FAR NORTH
AS THE RED RIVER BY WED MORNING. INCREASING LOW LEVEL WARM
ADVECTION AND LIFT WILL LIKELY RESULT IN SCATTERED SHOWERS AND
THUNDERSTORMS BY EVENING OVER PORTIONS OF CENTRAL TX...DEVELOPING
NORTHWARD INTO SOUTHEAST OK AND SOUTHWEST AR BY 29/12Z. WEAK LAPSE
RATES/INSTABILITY SHOULD PRECLUDE SEVERE STORMS.
...PACIFIC NORTHWEST COAST...
THE NEXT UPPER TROUGH AND STRONG MID/UPPER LEVEL JET WILL BEGIN
AFFECTING THE PACIFIC NORTHWEST COAST LATER TODAY. RAPID COOLING
ALOFT AND STRONG LARGE SCALE FORCING WILL INCREASE THE RISK OF A FEW
LIGHTNING STRIKES...MAINLY AFTER 29/06Z.
..HART/SMITH.. 12/28/2010
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