SWODY1
SPC AC 241604
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1004 AM CST SAT JAN 24 2009
VALID 241630Z - 251200Z
...NO TSTM AREAS FORECAST...
LARGE SCALE RIDGING OVER ERN PAC IS LEADING TO AMPLIFICATION OF
TROUGH ALONG W COAST AND EVENTUALLY UPPER LOW DEVELOPMENT CA BY LATE
SUNDAY. A MOIST SWLY FLOW CONTINUES OVER MUCH OF WRN U.S. TO E OF
DEVELOPING W COAST TROUGH. A WEAK S/WV TROUGH NOW MOVING ACROSS NRN
INTERMOUNTAIN REGION IS ENHANCING LARGE SCALE ASCENT AND AREAS OF
PCPN. WITH REGARDS TO ANY THUNDERSTORM POTENTIAL THIS FORECAST
PERIOD...THE WIDESPREAD CLOUDINESS/LIMITED DAYTIME HEATING... AND
OVERALL WEAK UPPER SUPPORT SUGGESTS THAT CONVECTION SUFFICIENT FOR
LIGHTNING DEVELOPMENT WILL BE DIFFICULT TO COME BY THIS
AFTERNOON/EVENING. THUS HAVE DROPPED THE FORECAST THREAT BELOW THE
10 PERCENT THRESHOLD FOR A GENERAL THUNDER AREA. ISOLATED LIGHTNING
STRIKES WILL STILL BE POSSIBLE GIVEN THE MID LEVEL LAPSE RATES
AROUND 7C/KM.
..HALES.. 01/24/2009
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