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Severe weather threat April 25th


Jessy89
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MESOSCALE DISCUSSION 0477  
NWS STORM PREDICTION CENTER NORMAN OK  
0758 PM CDT SAT APR 25 2020  
  
AREAS AFFECTED...NORTHWESTERN SOUTH CAROLINA INTO SOUTH-CENTRAL  
NORTH CAROLINA  
  
CONCERNING...TORNADO WATCH 148...  
  
VALID 260058Z - 260230Z  
  
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 148 CONTINUES.  
  
SUMMARY...LOCAL/BRIEF TORNADO RISK MAY SPREAD OUT OF WW 148 INTO  
SOUTH-CENTRAL NORTH CAROLINA.  
  
DISCUSSION...WHILE SEVERE RISK HAS DIMINISHED ACROSS MOST OF TORNADO  
WATCH 148, A SMALL CORRIDOR EXISTS OVER NORTHWESTERN SOUTH CAROLINA  
NEAR/TO THE COOL SIDE OF THE WEDGE FRONT WHERE A FEW SUPERCELL  
STORMS ARE ONGOING.  WHILE LIKELY TO BE SLIGHTLY ELEVATED JUST TO  
THE COOL SIDE OF THE FRONT, THE STORMS CONTINUE TO EXHIBIT WEAK  
LOW-LEVEL ROTATION.  GIVEN THE PRESENCE OF THE LOW-LEVEL BOUNDARY  
LYING WEST-TO-EAST ACROSS THIS AREA, A BRIEF TORNADO SPIN-UP REMAINS  
A POSSIBILITY OVER THE NEXT HOUR OR SO.  
  
WHILE THIS SLIGHTLY-MORE-FAVORABLE ZONE OF MINIMAL CAPE BUT AMPLE  
SHEAR EXTENDS EAST OF THE WATCH INTO SOUTH-CENTRAL NORTH CAROLINA, A  
NEW TORNADO WATCH IS NOT EXPECTED, AS THE ALREADY MARGINAL  
THERMODYNAMIC ENVIRONMENT DIURNALLY WORSENS. 

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