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MESOSCALE DISCUSSION 0020
NWS STORM PREDICTION CENTER NORMAN OK
0925 PM CST SAT JAN 12 2013
AREAS AFFECTED...ARKLATEX NEWD ACROSS CNTRL AND ERN AR AND INTO SERN
MO
CONCERNING...TORNADO WATCH 3...
VALID 130325Z - 130530Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 3 CONTINUES.
SUMMARY...A THREAT OF SEVERE WIND GUSTS AND A BRIEF TORNADO
REMAINS...BUT THE OVERALL THREAT APPEARS TO BE DECREASING.
DISCUSSION...RADAR TRENDS HAVE SHOWN A DECREASE IN ROTATION
SIGNATURES ACROSS CNTRL AND SWRN AR AS WIND PROFILES INDICATE SOME
VEERING. HOWEVER...SOME BOWING STRUCTURES ARE EVIDENT OVER SWRN AR
AS THE COLD FRONT ACCELERATES EWD. AS SUCH...IT APPEARS THAT THE
TORNADO THREAT MAY BE TRANSITIONING TO MORE OF A DAMAGING STRAIGHT
LINE WIND THREAT. HOWEVER...EMBEDDED CIRCULATIONS MAY STILL OCCUR
DUE TO STRONG LOW LEVEL SHEAR WITH A MARGINAL TORNADO THREAT.
A RELATIVELY MOIST AND MARGINALLY UNSTABLE AIR MASS REMAINS AHEAD OF
THE FRONT...FROM ERN TX NEWD TO THE OH RIVER. THIS MAY CONTINUE TO
FUEL STRONG TO SEVERE STORMS. HOWEVER...UNLESS AN OVERALL INCREASE
IS NOTED...AN ADDITIONAL WW MAY NOT BE NEEDED.
..JEWELL.. 01/13/2013
ATTN...WFO...PAH...MEG...JAN...LZK...SHV...
LAT...LON 33569396 35069247 36009105 36719038 36678908 35319016
33909125 33019210 33019408 33569396
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