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    Day 2 Outlook >
Jan 30, 2015 1300 UTC Day 1 Convective Outlook
Updated: Fri Jan 30 12:33:41 UTC 2015 (Print Version | 20150130 1300Z Day 1 shapefile | 20150130 1300Z Day 1 KML)
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 Forecast Discussion
   SPC AC 301233

   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0633 AM CST FRI JAN 30 2015

   VALID 301300Z - 311200Z

   ...NO SVR TSTM AREAS FORECAST...

   ...SUMMARY...
   ISOLATED THUNDERSTORMS MAY OCCUR THIS AFTERNOON AND EVENING OVER
   PARTS OF SOUTHERN ARIZONA AND EXTREME SOUTHWEST NEW MEXICO.

   ...SYNOPSIS...

   A SPLIT-FLOW PATTERN WILL PREVAIL THROUGH THE DAY ONE PERIOD WITH
   THE MOST SALIENT FEATURE TO TSTM DEVELOPMENT BEING A SRN-STREAM
   TROUGH WHICH WILL UNDERGO SLIGHT INTENSIFICATION OVER THE SWRN U.S.
   AND BAJA/NWRN MEXICO. AT THE SURFACE...AN EXPANSIVE ANTICYCLONE WILL
   BUILD FROM THE CENTRAL TO EASTERN PART OF THE NATION WHILE AN AREA
   OF LOW PRESSURE PERSISTS OVER NWRN MEXICO/SRN AZ.

   ...SRN AZ/FAR SWRN NM THIS AFTERNOON/EVENING...

   SSWLY DEEP-LAYER FLOW PRECEDING THE UPPER-LEVEL TROUGH HAS
   TRANSPORTED AN INCREASINGLY MOIST AIR MASS INTO THE REGION FROM THE
   SUB-TROPICAL PACIFIC. THIS MOISTURE COUPLED WITH HEIGHT
   FALLS/FORCING FOR ASCENT RELATED TO MULTIPLE VORTICITY MAXIMA
   PIVOTING AROUND THE PARENT UPPER-AIR SYSTEM WILL MAINTAIN WIDESPREAD
   SHOWER ACTIVITY TODAY INTO TONIGHT. CONTINUED COOLING ALOFT AND THE
   RESULTANT STEEPENING OF MID-LEVEL LAPSE RATES MAY BE SUFFICIENT TO
   SUPPORT A FEW EMBEDDED THUNDERSTORMS LATER TODAY. NO SEVERE WEATHER
   IS EXPECTED.

   ..MEAD.. 01/30/2015

   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1630Z

        
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Page last modified: January 30, 2015
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