dimanche 1 juin 2014

Jun 1, 2014 1300 UTC Day 1 Convective Outlook,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,http://www.spc.noaa.gov/products/outlook/day1otlk.html

DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0744 AM CDT SUN JUN 01 2014

   VALID 011300Z - 021200Z

   ...THERE IS A SLGT RISK OF SVR TSTMS FROM THE MID-MO VALLEY INTO THE
   CNTRL AND SRN PLAINS...

   ...SUMMARY...
   SEVERE STORMS ARE EXPECTED TO AFFECT LOCATIONS FROM THE MIDDLE
   MISSOURI VALLEY INTO THE CENTRAL AND SOUTHERN PLAINS THIS AFTERNOON
   INTO TONIGHT. VERY LARGE HAIL AND DAMAGING STRAIGHT-LINE WINDS WILL
   BE THE PRIMARY HAZARDS...THOUGH A COUPLE OF TORNADOES ARE ALSO
   POSSIBLE.

   ...SYNOPSIS...

   THE MOST SALIENT UPPER-AIR FEATURE TO SEVERE STORM DEVELOPMENT IS A
   SHORT-WAVE TROUGH WHICH WILL TRANSLATE FROM THE NRN INTER-MOUNTAIN
   REGION AND GREAT BASIN INTO THE UPPER MS AND MID/LOWER MO VALLEYS
   DURING THE DAY ONE PERIOD. MORNING WATER VAPOR IMAGERY AND MODEL
   GUIDANCE INDICATE THAT THIS TROUGH IS COMPRISED OF SEVERAL
   SMALLER-SCALE VORTICITY MAXIMA WHICH WILL EMERGE FROM THE ROCKIES AT
   DIFFERENT TIMES...LEADING TO A COMPLEX CONVECTIVE EVOLUTION ACROSS
   THE ADJACENT CNTRL PLAINS. 

   AT THE SURFACE...A LEE CYCLONE INITIALLY OVER NERN CO WILL UNDERGO A
   SLIGHT DEEPENING WHILE DEVELOPING NEWD ALONG A QUASI-STATIONARY
   FRONT INTO W-CNTRL MN BY SUNRISE MONDAY. THIS LOW PRESSURE WILL BE
   ACCOMPANIED BY A COLD FRONT WHICH WILL ADVANCE EWD ACROSS THE
   DAKOTAS AND SWD THROUGH THE CNTRL HIGH PLAINS. A SECONDARY SURFACE
   LOW WILL DEEPEN OVER WRN KS TODAY AHEAD OF THE COLD FRONT...ALONG A
   DRYLINE WHICH WILL STRETCH FROM WRN KS TO WRN TX.

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