SWODY2
SPC AC 171721
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1121 AM CST WED FEB 17 2010
VALID 181200Z - 191200Z
...NO SVR TSTM AREAS FORECAST...
...NV/UT...
THE SHORTWAVE TROUGH NOW APPROACHING THE NRN ROCKIES WILL DROP SWD
INTO THE FOUR CORNERS REGION THURSDAY. STEEP LAPSE RATES AND ASCENT
ATTENDING THIS FEATURE WILL PROMOTE A THREAT FOR ISOLATED
THUNDERSTORMS...PRIMARILY ACROSS UT DURING THE AFTERNOON AND EARLY
EVENING.
...DEEP S TX...
A SRN STREAM SHORTWAVE TROUGH NOW MOVING INTO NRN BAJA AREA WILL
REACH DEEP SOUTH TX LATER THURSDAY NIGHT. INCREASING SLY FLOW AHEAD
OF THIS IMPULSE WILL CONTRIBUTE TO NWD ADVECTION OF MODIFIED CP AIR
ABOVE A STABLE SURFACE LAYER. INSTABILITY WILL REMAIN LIMITED DUE
PRIMARILY TO POOR LAPSE RATES. SUFFICIENT INSTABILITY MIGHT DEVELOP
TO SUPPORT A THREAT OF EMBEDDED THUNDERSTORMS AS LIFT WITHIN THE
DEVELOPING WARM ADVECTION REGIME INCREASES. HOWEVER...THUNDERSTORM
COVERAGE IS EXPECTED TO REMAIN LOW.
..DIAL.. 02/17/2010
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