SWODY1
SPC AC 221558
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0958 AM CST THU JAN 22 2009
VALID 221630Z - 231200Z
...NO TSTM AREAS FORECAST...
...SRN CA COAST TODAY...
A GRADUALLY WEAKENING MID LEVEL TROUGH WILL MOVE INLAND OVER SRN
CA/NRN BAJA LATE TODAY. A PLUME OF PW VALUES NEAR 1.25 INCHES
PRECEDES THE TROUGH...ALONG WITH MID LEVEL LAPSE RATES NEAR 6.5 C/KM
PER 12Z REGIONAL SOUNDINGS. IT APPEARS THAT VERY WEAK MID LEVEL
INSTABILITY /MUCAPE AOB 150 J/KG BASED IN THE 850-700 MB LAYER/ WILL
PERSIST THROUGH THE DAY NEAR THE SRN CA COAST. THE MOST VIGOROUS
CONVECTIVE ELEMENTS COULD BE SUFFICIENTLY STRONG/DEEP FOR CHARGE
SEPARATION AND ISOLATED LIGHTNING PRODUCTION...BUT THE THUNDERSTORM
THREAT WILL BE MARGINAL AT BEST.
..THOMPSON.. 01/22/2009
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