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Mesoscale Discussion 541
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   MESOSCALE DISCUSSION 0541
   NWS STORM PREDICTION CENTER NORMAN OK
   1105 PM CDT THU MAY 07 2015

   AREAS AFFECTED...CNTRL AND NE TX...SE OK

   CONCERNING...SEVERE THUNDERSTORM WATCH 141...

   VALID 080405Z - 080530Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 141
   CONTINUES.

   SUMMARY...THE SEVERE THREAT ONGOING IN THE ERN AND SRN PART OF WW
   141 IS EXPECTED TO BECOME MORE ISOLATED TONIGHT. HAIL AND STRONG
   WIND GUSTS WILL BE THE PRIMARY THREATS. WW ISSUANCE IS NOT EXPECTED
   TO THE EAST OF WW 141 BUT A LOCAL EXTENSION COULD BE NECESSARY.

   DISCUSSION...A COMPLEX LINEAR MCS IS ONGOING ACROSS ERN OK EXTENDING
   SWWD INTO NORTH AND CNTRL TX...LOCATED ALONG THE NWRN EDGE OF A
   CORRIDOR OF LOW-LEVEL MOISTURE. SFC DEWPOINTS TO THE EAST OF THE MCS
   ARE IN THE UPPER 60S AND LOWER 70S FROM NEAR THE RED RIVER SWWD INTO
   THE NRN TX HILL COUNTRY WHERE MLCAPE IS ESTIMATED FROM 1500 TO 2000
   J/KG. THE INSTABILITY COMBINED WITH A STRENGTHENING LOW-LEVEL JET
   OVER EAST TX AND SE OK WILL HELP TO KEEP THE MCS GOING TONIGHT.
   STRONG WIND GUSTS AND HAIL WILL BE POSSIBLE WITH THE BETTER
   ORGANIZED PARTS OF THE LINE. HOWEVER...INSTABILITY SHOULD GRADUALLY
   DECREASE OVER THE NEXT FEW HOURS RESULTING IN A GENERAL DOWNTREND IN
   THE SEVERE THREAT.

   ..BROYLES/MEAD.. 05/08/2015


   ATTN...WFO...SHV...TSA...FWD...OUN...SJT...

   LAT...LON   31649748 31589863 31939879 32299840 32609775 33479658
               34419580 34779548 34749491 34299467 33319503 32309589
               31649748 

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Page last modified: May 08, 2015
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