Apr 6, 2007 1730 UTC Day 2 Convective Outlook
Updated: Fri Apr 6 16:39:38 UTC 2007
Probabilistic to Categorical Outlook Conversion Table (Effective Feb 14, 2006).
Categorical Graphic
20070406 1730 UTC Day 2 Outlook Graphic
Probabilistic Graphic
20070406 1730 UTC Day Probabilitic Graphic
   SPC AC 061637
   
   DAY 2 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1137 AM CDT FRI APR 06 2007
   
   VALID 071200Z - 081200Z
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ...SYNOPSIS...
   
   AMPLIFIED LONG WAVE PATTERN WILL CONTINUE THROUGH THE DAY TWO
   PERIOD...CHARACTERIZED BY BROAD TROUGH OVER ERN N AMERICA AND
   RIDGING FROM THE PACIFIC NW INTO WRN CANADA.  A LOWER LATITUDE TRAIN
   OF SHORT WAVE TROUGHS WILL EXIST FROM THE ERN PACIFIC INTO S-CNTRL
   STATES WHICH WILL PROVIDE THE FOCUS FOR ISOLATED TO SCATTERED TSTM
   DEVELOPMENT THROUGH THE PERIOD.
   
   ...CA/GREAT BASIN THROUGH FOUR CORNERS REGION TO TX...
   
   LEAD SHORT WAVE TROUGH INITIALLY OVER SRN AZ/SWRN NM AND NWRN MEXICO
   WILL TEND TO WEAKEN AS IT TRANSLATES SEWD INTO INCREASINGLY
   CONFLUENT MID-LEVEL FLOW REGIME OVER TX INTO THE LOWER MS VALLEY. 
   LOW-LEVEL AIR MASS WILL REMAIN DRY AND QUITE STABLE OWING TO
   PROXIMITY OF SURFACE ANTICYCLONE OVER OK/N TX.  HOWEVER...FORECAST
   SOUNDINGS DO INDICATE THAT SUFFICIENT ELEVATED INSTABILITY WILL
   EXIST SUCH THAT A FEW TSTMS WILL BE POSSIBLE THROUGH THE PERIOD
   WITHIN ZONE OF LARGE-SCALE FORCING ASSOCIATED WITH THIS SHORT WAVE
   TROUGH.
   
   NEXT UPSTREAM SHORT WAVE TROUGH IS EXPECTED TO MOVE ONTO THE NRN CA
   COAST SATURDAY MORNING WITH THIS FEATURE SHIFTING SEWD INTO THE
   GREAT BASIN SATURDAY NIGHT.  RELATIVELY COOL MID-LEVEL TEMPERATURES
   AND ASSOCIATED PLUME OF STEEPER LAPSE RATES WILL SUPPORT
   ISOLATED/SCATTERED TSTMS AHEAD OF THE UPPER TROUGH.  OTHER MORE
   ISOLATED TSTM DEVELOPMENT WILL BE POSSIBLE SATURDAY INTO SATURDAY
   NIGHT WITHIN STEEP LAPSE RATE ENVIRONMENT FROM ERN PORTIONS OF THE
   GREAT BASIN THROUGH THE FOUR CORNERS REGION.
   
   ..MEAD.. 04/06/2007
   
   CLICK TO GET WUUS02 PTSDY2 PRODUCT

   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0800Z