SWOMCD
SPC MCD 240332
ALZ000-MSZ000-240430-
MESOSCALE DISCUSSION 0362
NWS STORM PREDICTION CENTER NORMAN OK
1032 PM CDT FRI APR 23 2010
AREAS AFFECTED...ERN MS INTO WRN-CENTRAL AL
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 240332Z - 240430Z
A NEW WATCH MAY BE NEEDED LATER THIS EVENING INTO THE OVERNIGHT
PERIOD ACROSS PARTS OF ERN MS INTO WRN AND CENTRAL AL.
REGIONAL RADARS INDICATED TSTMS HAVE CONTINUED TO DEVELOP ALONG AND
N THROUGH E OF A WARM FRONT WHICH EXTENDED FROM CENTRAL AR THROUGH
NRN MS TO CENTRAL AL AT 03Z. THIS ACTIVITY IS LOCATED WITHIN A WAA
REGIME...WITH FURTHER MOISTENING EXPECTED ACROSS THE IMMEDIATE
UPSTREAM AIR MASS OVER THE LOWER MS VALLEY LATE THIS EVENING/
OVERNIGHT AS THE S/SWLY LOW LEVEL WINDS STRENGTHEN. ALTHOUGH STORMS
ARE MAINLY ELEVATED AT THE PRESENT TIME...CONTINUED MOISTENING FROM
THE SW WITHIN PERSISTENT WAA SUGGESTS STORMS COULD BECOME ROOTED
CLOSER TO THE SURFACE. IN ADDITION...A PLUME OF STEEP MIDLEVEL
LAPSE RATES WILL SPREAD ENEWD ACROSS THE LOWER MS VALLEY TO CENTRAL
GULF COAST STATES SUPPORTING ADDITIONAL DESTABILIZATION. MODERATE
INSTABILITY COMBINED WITH AROUND 50 KT OF EFFECTIVE BULK SHEAR COULD
RESULT IN AN INCREASE IN SEVERE WEATHER POTENTIAL...ESPECIALLY IF
ACTIVITY CAN BECOME ROOTED CLOSER TO THE SURFACE.
..PETERS.. 04/24/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...BMX...MOB...MEG...JAN...
LAT...LON 33688972 33688814 33528696 32898626 32028638 31238772
31158878 31848949 32759013 33688972
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