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    Day 2 Outlook >
Dec 20, 2014 2000 UTC Day 1 Convective Outlook
Updated: Sat Dec 20 19:36:49 UTC 2014 (Print Version | 20141220 2000Z Day 1 shapefile | 20141220 2000Z Day 1 KML)
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 Forecast Discussion
   SPC AC 201936

   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0136 PM CST SAT DEC 20 2014

   VALID 202000Z - 211200Z

   ...NO TSTM AREAS FORECAST...

   ...SUMMARY...
   THUNDERSTORMS NOT EXPECTED OVER THE CONTINENTAL U.S. TODAY.

   ...20Z UPDATE...
   NO CHANGES ARE NEEDED.

   ..ROGERS.. 12/20/2014

   .PREV DISCUSSION... /ISSUED 1005 AM CST SAT DEC 20 2014/

   ...SYNOPTIC SETUP/FORECAST...
   LARGELY ZONAL FLOW WILL PREVAIL OVER THE CONUS THROUGH EARLY
   SUN...DOWNSTREAM FROM POWERFUL/DEEP ZONAL JET TOPPING BROAD RIDGE
   OVER THE CNTRL AND E PACIFIC. A SERIES OF WEAK DISTURBANCES OVER THE
   E CNTRL AND SERN STATES WILL FURTHER DEAMPLIFY AS THEY CONTINUE E
   INTO THE ATLANTIC. PATTERN WILL THEREFORE REMAIN UNFAVORABLE FOR
   APPRECIABLE ELEVATED WAA/MOISTURE TRANSPORT ATOP SHALLOW COOL DOME
   OVER THE NERN GULF OF MEXICO AND THE ADJACENT GULF CST. ELEVATED
   CONVECTION IN THAT REGION SHOULD THEREFORE REMAIN TOO SHALLOW/WEAK
   FOR THUNDER. 

   IN THE PACIFIC NORTHWEST...LOW TO MID-TROPOSPHERIC WIND FIELD WILL
   FURTHER STRENGTHEN LATER TODAY...YIELDING STRONG...VERTICALLY
   VEERING WIND PROFILES OVER WRN WA AS DEVELOPING SFC WAVE W OF
   VANCOUVER ISLAND CONTINUES EWD. GRADUAL WARMING AT MID-LVLS AND
   LIMITED LOW-LVL BUOYANCY SHOULD...HOWEVER...PRECLUDE ANY ATTENDANT
   THUNDER THREAT.

   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0100Z

        
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Page last modified: December 20, 2014
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