SWODY2
SPC AC 190535
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1135 PM CST THU NOV 18 2010
VALID 201200Z - 211200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
THE LARGE SCALE UPPER FLOW PATTERN WILL AMPLIFY TO A DEGREE INTO
SATURDAY...HIGHLIGHTED BY A DEEPENING LONGWAVE TROUGH ALONG THE WEST
COAST. THE LEAD PORTION OF THIS UPPER TROUGH IS EXPECTED TO EJECT
NORTHEASTWARD OVER THE NORTHERN INTERMOUNTAIN REGION...WHILE A MORE
SUBSTANTIAL AND SECONDARY/REINFORCING PORTION OF THIS TROUGH DIGS
SOUTHWARD ALONG THE WA/ORE COASTS...TO NEAR THE NORTHERN CA COAST BY
EARLY SUNDAY.
GIVEN THIS SCENARIO...ISOLATED LOW-TOPPED TSTMS WILL BE POSSIBLE
AMID OTHER SHOWERY POST-FRONTAL CONVECTION ALONG THE ORE/NORTHERN CA
COASTS AND OFFSHORE WATERS ON SATURDAY. A FEW OF THE TSTMS COULD
CONTAIN SMALL HAIL GIVEN THE STEEP LAPSE RATES/WEAK BUOYANCY...BUT
SEVERE TSTMS ARE NOT EXPECTED.
ADDITIONALLY...A FEW TSTMS CANNOT BE RULED OUT ALONG/AHEAD OF THE
ADVANCING COLD FRONT ACROSS PORTIONS OF NV/UT...BUT ANY SUCH TSTMS
SHOULD REMAIN RATHER SPORADIC.
..GUYER.. 11/19/2010
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