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MESOSCALE DISCUSSION 0268
NWS STORM PREDICTION CENTER NORMAN OK
0125 AM CDT THU MAR 26 2009
AREAS AFFECTED...SE LA...SE MS THROUGH SW AND CNTRL AL
CONCERNING...SEVERE POTENTIAL...WATCH NEEDED SOON
VALID 260625Z - 260700Z
LINE OF STRONG TO SEVERE STORMS WILL CONTINUE EAST AND APPROACH THE
ERN EDGE OF WW 66 BY 0730-08Z. NEW WW WILL BE ISSUED SOON FOR SE LA
AND SE MS INTO SW AND CNTRL AL.
LINE OF STRONG TO SEVERE STORMS EXTENDING FROM N CNTRL MS THROUGH S
CNTRL LA IS MOVING EAST AT 35-40 KT. A WARM FRONT EXTENDS FROM N
CNTRL MS SEWD THROUGH SRN AL INTO THE FL PANHANDLE. SOUTH OF THIS
BOUNDARY...DEWPOINTS ARE IN THE LOW TO MID 60S...EXCEPT UPPER 60S
OVER THE NWRN GULF COAST. SWLY LOW LEVEL JET IS EXPECTED TO
INTENSIFY TO 60+ KT AND SHIFT NEWD THROUGH AL IN ASSOCIATION WITH
EJECTING SHORTWAVE TROUGH. INSTABILITY IS MORE MARGINAL WITH EWD
EXTENT INTO AL. HOWEVER...MOIST ADVECTION ASSOCIATED WITH THE LOW
LEVEL JET MAY CONTRIBUTE TO SOME NWD RECOVERY OF THE WARM SECTOR
WITH TIME. THE LINE IS EMBEDDED WITHIN STRONG SHEAR PROFILES WITH
LARGE LOW LEVEL HODOGRAPHS SUPPORTIVE OF BOWING STRUCTURES AND
SUPERCELLS.
..DIAL.. 03/26/2009
ATTN...WFO...BMX...MOB...JAN...LIX...
LAT...LON 33148587 31168689 29428952 29509083 31668873 33428804
33148587
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