MESO: Mesoscale Discussion 1837

ACUS11 KWNS 300407
SWOMCD
SPC MCD 300406
ALZ000-FLZ000-MSZ000-LAZ000-300530-

MESOSCALE DISCUSSION 1837
NWS STORM PREDICTION CENTER NORMAN OK
1106 PM CDT WED AUG 29 2012

AREAS AFFECTED...SE LA...SRN MS AND SW AL

CONCERNING...TORNADO WATCH 595...

VALID 300406Z - 300530Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 595 CONTINUES.

SUMMARY...THE TORNADO THREAT ASSOCIATED WITH TROPICAL STORM ISAAC
WILL CONTINUE OVERNIGHT. TORNADO WATCH 595 WILL NEED TO BE REISSUED
JUST PRIOR TO THE EXPIRATION TIME OF 05Z.

DISCUSSION...TROPICAL STORM ISAAC CONTINUES TO MOVE SLOWLY NWWD WITH
THE CENTER VERY CLOSE TO BATON ROUGE. RAINBANDS EXTEND ABOUT 200
STATUTE MILES TO THE NORTH AND EAST OF THE CENTER. TWO PERSISTENT
CORRIDORS OF VERY HEAVY RAINFALL WITH STRONG CELL ELEMENTS HAVE SET
UP WITH THE FIRST LOCATED IN THE VICINITY OF NEW ORLEANS AND THE
SECOND JUST TO THE WEST OF MOBILE. THE WSR-88D VWPS AT BOTH OF THESE
LOCATIONS SHOW BACKED WINDS BELOW 1 KM WITH 25 TO 35 KT OF 0-1 KM
SHEAR. THE LOW-LEVEL WIND SHEAR COMBINED WITH A VERY MOIST BOUNDARY
LAYER SHOULD CONTINUE BE FAVORABLE FOR ROTATING STORMS EMBEDDED IN
THE RAINBANDS OF ISAAC AND POTENTIALLY TORNADOES DURING THE
OVERNIGHT PERIOD. FOR THIS REASON...A NEW TORNADO WATCH WILL BE
NECESSARY ACROSS THE REGION.

..BROYLES.. 08/30/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...MOB...JAN...LIX...LCH...

LAT...LON 28868871 28668896 28648931 28608959 28888982 28789008
29099011 29189001 29329018 29329001 29459014 29629018
29729034 29919063 30169067 30099118 30139147 30449174
30839182 31069169 30989159 31189162 31299161 31269147
31409154 31459149 31559149 31549140 31619152 31629139
31839136 31819125 32009108 32069115 32229071 32049069
32048973 32238973 32238844 31718846 31708810 31588810
31548794 31298791 31108795 31298777 31308760 30998759
30818760 30648738 30458742 30298749 30328723 29968713
29838818 29898826 29858845 29608853 29418867 29138860
28868871

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.