SPC AC 191653
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1053 AM CST SUN NOV 19 2006
VALID 201200Z - 211200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
STRONG VORTEX IN THE NRN LATITUDES ALONG 140W WILL BRING STRONG
WSWLY FLOW INTO THE NWRN U.S. DURING THE PERIOD. IN RESPONSE TO
THIS VORTEX RIDGING WILL EXTEND FROM AZ/NM INTO THE NORTHERN PLAINS
THEN TRAVEL INTO THE GREAT LAKES. THIS WILL RESULT IN LARGE
GEOPOTENTIAL HEIGHT FALLS OVER THE GA/NRN FL DURING THE LATTER HALF
OF THE PERIOD FORMING A MID/UPPER LOW OVER THE REGION. SURFACE
RIDGE WILL EXTEND FROM THE SOUTH CENTRAL U.S. NEWD THRU THE GREAT
LAKES DURING THE PERIOD INHIBITING SUFFICIENT FLOW/LOW LEVEL
MOISTURE NWD FOR SEVERE THUNDERSTORM CONSIDERATION DURING THE
PERIOD.
...PACIFIC NORTHWEST COAST/NRN PLATEAU AREA...
MID/UPPER LEVEL TROUGH WILL BE MOVING TOWARDS THE PACIFIC NORTHWEST
COAST DURING THE LATTER HALF OF THE PERIOD ON MONDAY. THIS WILL BE
ACCOMPANIED BY MID LEVEL THERMAL TROUGH WITH -28C TO -32C TEMPS
STEEPENING MID LEVEL LAPSE RATES TO NEAR/AROUND 7C/KM...SUFFICIENT
FOR ISOLATED THUNDERSTORMS.
FURTHER INLAND...NAM/GFS/NGM WILL HINT AT MINOR VORTICITY MAX
EMBEDDED WITHIN THE FLOW MOVING ENEWD INTO ID AND SWRN MT MONDAY
AFTERNOON. IN ADDITION...A WEAK SFC LOW DEVELOPS ALONG THE FRONT
WITH SOME 35-40 DEG F DEW POINTS. THUS...VERY ISOLATED
THUNDERSTORMS CAN OCCUR IN THIS REGION MONDAY AFTERNOON.
..MCCARTHY.. 11/19/2006
CLICK TO GET WUUS02 PTSDY2 PRODUCT
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0800Z
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