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| Mesoscale Discussion 1003 |
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MESOSCALE DISCUSSION 1003
NWS STORM PREDICTION CENTER NORMAN OK
0936 PM CDT SAT JUN 08 2013
AREAS AFFECTED...PANHANDLE AND NWRN TX...SWRN OK
CONCERNING...SEVERE THUNDERSTORM WATCH 288...
VALID 090236Z - 090400Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 288
CONTINUES.
SUMMARY...ISOLATED SEVERE WIND/HAIL THREATS CONTINUE ALONG THE
TRAILING W/E-ORIENTED PORTION OF THE EXTENSIVE GREAT PLAINS QLCS.
CONVECTION WILL LIKELY PERSIST BEYOND SCHEDULED 04Z WW
EXPIRATION...AND A NEW WW OR LOCAL WFO WW EXTENSION MAY BECOME
NECESSARY.
DISCUSSION...TRAILING PORTION OF QLCS CONTINUES TO MOVE SWD ALONG
COMPOSITE OUTFLOW/FRONT...CURRENTLY ACROSS THE I-40 CORRIDOR.
ALTHOUGH THE LLJ HAS ONLY INCREASED TO 25-30 KT THUS FAR IN AREA VWP
DATA...A NEAR 180 DEGREE TURNING OF WINDS WITH HEIGHT IS SUPPORTING
STRONG EFFECTIVE SHEAR AOA 50 KT. WITH THE 60 F ISODROSOTHERM NOW
REACHING THE BIG COUNTRY...CONTINUED LOW-LEVEL MOISTURE ADVECTION
MAY BE ABLE TO COMPENSATE FOR NOCTURNAL COOLING. WITH THIS PORTION
OF THE QLCS POISED TO DEVELOP S/SWWD WITHIN THE INSTABILITY AXIS...A
STRENGTHENING COLD POOL COULD AID IN MAINTENANCE OF ISOLATED SEVERE
STORMS INTO THE OVERNIGHT.
..GRAMS.. 06/09/2013
ATTN...WFO...OUN...SJT...LUB...AMA...MAF...
LAT...LON 35860083 35870001 35749930 35059902 34059895 33159934
32790012 32770149 33270259 34150300 35510245 35860083
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