SWODY1
SPC AC 300043
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0643 PM CST TUE JAN 29 2008
VALID 300100Z - 301200Z
..THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE TN AND OH VALLEYS...
..TN/OH VALLEYS...
NARROW BUT WELL-DEFINED LINE OF SHOWERS AND STORMS NOW EXTENDS FROM
NRN INDIANA SWD TO NWRN AL...ALONG VERY SHARP EWD-MOVING COLD FRONT.
THOUGH INSTABILITY AHEAD OF THE FRONT REMAINS MEAGER AT
BEST...FORCED LINE OF CONVECTION WILL LIKELY PERSIST WELL INTO THE
OVERNIGHT HOURS INTO THE UPPER OH VALLEY/CENTRAL APPALACHIANS AS
VERY STRONG UPPER SYSTEM CONTINUES ENEWD ACROSS THE MIDWEST PER
LATEST WV IMAGERY. WHILE LIGHTNING SHOULD SLOWLY DIMINISH WITHIN
THE LINE -- AND PERHAPS BECOME NEARLY NON-EXISTENT LATER THIS
EVENING...INTENSE DEEP-LAYER WIND FIELD /INCLUDING 100 KT SWLY H5
FLOW PER EVENING BNA RAOB/ SUGGESTS THAT FAIRLY WIDESPREAD DAMAGING
WINDS WILL CONTINUE WITH THE PASSAGE OF THE FRONT/CONVECTIVE LINE.
ERN EXTENT OF THE THREAT REMAINS DIFFICULT TO DISCERN...WITH STABLE
BOUNDARY LAYER INDICATED BY EVENING RAOBS FROM PIT/BUF.
HOWEVER...WITH DEWPOINTS IN THE UPPER 40S INTO CENTRAL AND SRN
OH/WV...IT APPEARS THAT SLIGHT RISK REMAINS JUSTIFIED INTO THE UPPER
OH VALLEY.
ON THE SRN FRINGE OF THE OUTLOOK...STORMS CONTINUE TO STRUGGLE TO
DEVELOP SWD ALONG FRONT INTO MS/AL. WITH UPPER SYSTEM MOVING
EWD/ENEWD ACROSS THE OH VALLEY...IT APPEARS THAT MAIN THREAT SHOULD
EXIST FROM TN NWD. THUS...WILL MOVE THE SLIGHT OUT OF MS/AL.
.GOSS.. 01/30/2008
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