MESOSCALE DISCUSSION 0242
NWS STORM PREDICTION CENTER NORMAN OK
0126 PM CST THU MAR 13 2003
AREAS AFFECTED...SRN LA
CONCERNING...SEVERE THUNDERSTORM WATCH 42...
VALID 131926Z - 132130Z
THREAT OF DAMAGING WINDS AND SEVERE HAIL CONTINUES ACROSS SRN AND
ERN PARTS OF WW042.
RECENT RADAR DATA FROM NEW ORLEANS SUGGEST AN INTENSIFYING TREND
TO LINE OF TSTMS THAT EXTENDS FROM WASHINGTON PARISH SWWD TO ST.
JAMES PARISH. THE 18Z NEW ORLEANS SOUNDING INDICATED THAT THE
AIRMASS OVER SRN LA AND FAR SERN MS HAS BECOME MODERATELY
UNSTABLE WITH MLCAPES OF 1500-2000 J/KG. LOCAL VWP/S CONTINUE TO
INDICATE UNIDIRECTIONAL WIND PROFILES WITH A MODERATE AMOUNT OF
DEEP-LAYER SHEAR. THUS...IT APPEARS THAT THE THREAT OF DAMAGING
WINDS AND SEVERE HAIL WILL CONTINUE WITH THE STRONGEST TSTMS
GIVEN THE MODERATE AMOUNTS OF SHEAR AND INSTABILITY.
..MEAD.. 03/13/2003
ATTN...WFO...LIX...LCH...
30469118 30709052 30708969 30518925 29728940 29419013
29489090 29869170
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