SWOMCD
SPC MCD 291711
ALZ000-MSZ000-LAZ000-291745-
MESOSCALE DISCUSSION 0742
NWS STORM PREDICTION CENTER NORMAN OK
1211 PM CDT SAT MAY 29 2010
AREAS AFFECTED...PARTS OF ERN/SERN LA AND SRN MS
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 291711Z - 291745Z
NEW SVR TSTM WATCH WILL BE NEEDED SOON ACROSS PARTS OF ERN/SERN LA
AND SRN MS.
VISIBLE IMAGERY/REGIONAL RADARS AND LIGHTNING DATA SHOWED TSTMS
BEGINNING TO DEVELOP VICINITY OF AND EITHER SIDE OF THE MS RIVER /S
OF A JAN-MLU LINE/. ADDITIONAL CU/TCU PER VISIBLE IMAGERY HAS
CONTINUED TO FORM ALONG SEA BREEZE BOUNDARY IN SRN LA AND LAKE
BREEZE BOUNDARY ASSOCIATED WITH LAKE PONTCHARTRAIN. ADDITIONAL
UPDRAFTS/EVENTUAL TSTMS ARE EXPECTED TO DEVELOP THROUGH THE
AFTERNOON WITHIN A DESTABILIZING AIR MASS /MLCAPE 2000+ J PER
KG/...BENEATH RELATIVELY COLD MIDLEVEL TEMPERATURES. DAMAGING WIND
GUSTS AND HAIL WILL BE THE PRIMARY THREATS. 14Z WRF-HRRR MODEL
SHOWED THE ONGOING STORMS OVER NERN LA/SWRN AL WITH ACTIVITY
DEVELOPING/SPREADING SEWD INTO NEW ORLEANS AREA BY 30/00Z.
..PETERS.. 05/29/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MOB...JAN...LIX...LCH...SHV...
LAT...LON 29669260 30069276 30989266 32369220 32209089 31748886
30948823 29968829 29318894 29449135 29669260
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