SPC AC 071238
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0638 AM CST WED FEB 07 2007
VALID 071300Z - 081200Z
...NO SVR TSTM AREAS FORECAST...
...SWRN ORE/NRN CA...
CLOSED UPPER-LEVEL LOW NEAR 46N/135W WILL LIFT SLOWLY NWD W OF THE
BRITISH COLUMBIA COAST. TO THE S OF THE LOW...AN ATTENDANT SHORT
WAVE TROUGH WILL LIFT NEWD AND REACH THE NRN CA/ORE COAST AROUND
08/00Z. A SURFACE COLD FRONT WILL MOVE INLAND THIS
AFTERNOON...REACHING THE GREAT BASIN BY EARLY THU. COOLING MID-LEVEL
TEMPERATURES /-24 TO -28 C AT 500 MB/ AND A MOIST SURFACE-BASED
POST-FRONTAL AIR MASS WILL BE SUFFICIENT FOR LIMITED INSTABILITY IN
THE LATE AFTERNOON/EVENING HOURS. ISOLATED TSTMS WILL BE POSSIBLE AT
TO JUST OFF THE SWRN ORE/NRN CA COASTS. IN ADDITION...A FEW TSTMS
MAY ALSO OCCUR LATER IN THE EVENING INVOF THE TRINITY MTNS AS SLY
LOW-LEVEL FLOW ACROSS THE SACRAMENTO VALLEY ENHANCES OROGRAPHIC LIFT
AND MAINTAINS ADEQUATE NEAR-SURFACE MOISTURE UPON THE ARRIVAL OF
MID-LEVEL COOLING.
..GRAMS/THOMPSON.. 02/07/2007
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1630Z
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