SWODY1
SPC AC 080518
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1118 PM CST TUE DEC 07 2010
VALID 081200Z - 091200Z
...NO SVR TSTM AREAS FORECAST...
...PACIFIC NORTHWEST COAST...
CURRENT WATER VAPOR SATELLITE IMAGERY INDICATED A SHORTWAVE TROUGH
TRACKING NEWD TOWARD THE PACIFIC NW COAST...WITH OBSERVATIONAL
TRENDS AND LATEST MODELS SUGGESTING THIS FEATURE SHOULD REACH THE
COAST BY 12Z TODAY AND THEN PROCEED INLAND. TUESDAY EVENING OCEANIC
LIGHTNING DATA SHOWED A CLUSTER OF STRIKES ASSOCIATED WITH THIS
SHORTWAVE TROUGH...CURRENTLY LOCATED NEAR 41N/132W. COOLING
LOWER-MID TROPOSPHERIC PROFILES /E.G. -26 TO -28 C AT 500 MB/...
ALONG AND NORTH OF STRONG WSWLY MID-UPPER LEVEL FLOW...WILL ALLOW
LAPSE RATES TO STEEPEN ALONG THE WA/ORE COAST INTO THE AFTERNOON.
FORECAST SOUNDINGS SUGGEST ADEQUATE MUCAPE /100-200 J PER KG/ IN THE
LOWEST 5-6KM FOR CONVECTIVE UPDRAFTS TO BE CAPABLE OF PRODUCING AT
LEAST ISOLATED LIGHTNING.
..PETERS.. 12/08/2010
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