SPC MESOSCALE DISCUSSION 0676 FOR CNTRL/ERN OK
CONCERNING...SEVERE THUNDERSTORM POTENTIAL...REF WW 203...

LARGE HAIL AND ISOLATED DAMAGING WIND GUSTS REMAIN LIKELY WITH
ISOLATED SUPERCELL STORMS OVER CNTRL/ERN OK. THREAT FOR ISOLATED
TORNADOES ALSO EXISTS NEXT COUPLE HOURS OR SO.

LOW LEVEL FLOW REMAINS BACKED TO THE SE ACROSS CNTRL THROUGH SERN
OK ALONG AND N OF OUTFLOW BOUNDARY THAT EXTENDS ALONG THE RED RIVER
AND IS CONTRIBUTING TO VEERING LOW LEVEL WIND PROFILES. DESPITE
SOMEWHAT MARGINAL GROUND RELATIVE LOW LEVEL WIND SPEEDS...STORMS
HAVE HAD A TENDENCY TO MOVE SLOWLY SE AND DEVIATE TO THE RIGHT OF
THE MEAN WIND. THIS IS ENHANCING LOW LEVEL STORM RELATIVE INFLOW
AND CONTRIBUTING TO 0-3 KM HELICITY FROM 150 TO 200 M2/S2. PRIMARY
THREAT CONTINUES TO BE LARGE HAIL. HOWEVER...ISOLATED TORNADOES
REMAIN POSSIBLE...ESPECIALLY WITH STORMS THAT SHOW SIGNIFICANT
DEVIANT STORM MOTION. RAINFALL RATES FROM 1.5 TO 2 INCHES PER HOUR
ARE ALSO LIKELY WITH SLOW MOVING STORMS.

..DIAL.. 05/06/01

...PLEASE SEE WWW.SPC.NOAA.GOV/ FOR GRAPHIC PRODUCT...