MESO: Mesoscale Discussion 1912

ACUS11 KWNS 242052
SWOMCD
SPC MCD 242051
ALZ000-FLZ000-MSZ000-242215-

MESOSCALE DISCUSSION 1912
NWS STORM PREDICTION CENTER NORMAN OK
0351 PM CDT TUE SEP 24 2013

AREAS AFFECTED...FAR SOUTHEAST MS/SOUTHWEST AL

CONCERNING...SEVERE THUNDERSTORM WATCH 535...

VALID 242051Z - 242215Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 535
CONTINUES.

SUMMARY...SEVERE TSTM WATCH 535 CONTINUES UNTIL 02Z ACROSS SOUTHEAST
MS/SOUTHWEST AL...WITH DAMAGING WINDS/PERHAPS A BRIEF TORNADO
REMAINING A POSSIBILITY INTO THIS EVENING.

DISCUSSION...A SQUALL LINE WITH EMBEDDED BOWING STRUCTURES CONTINUES
TO STEADILY ADVANCE EAST-SOUTHEASTWARD NEAR THE SOUTHEAST
MS/SOUTHWEST AL BORDER VICINITY AS OF 2045Z. A WARM FRONT CONTINUES
TO SLOWLY SPREAD NORTH-NORTHEASTWARD IMMEDIATELY AHEAD OF THE SQUALL
LINE...WITH THE MOBILE VICINITY HAVING WARMED AROUND 6 DEG F OVER
THE PAST TWO HOURS. MODEST INSOLATION ON THE SOUTHERN EDGE OF A
STRATIFORM REGION/CIRRUS CANOPY AND LOWER-MIDDLE 70S F SURFACE
DEWPOINTS ALONG/SOUTH OF THE WARM FRONT ARE CONTRIBUTING TO 1000+
J/KG MLCAPE. ASSOCIATED WITH A PASSING IMPULSE...MID-LEVEL
WESTERLIES HAVE SHOWN SOME SIGNS OF STRENGTHENING OVER THE PAST FEW
HOURS. THE WSR-88D VWP FROM MOBILE INDICATING 40+ KT WINDS
NEAR/ABOVE 6 KM WITH A WIND PROFILE CONDUCIVE FOR SOME SUPERCELL
STRUCTURES AND FORWARD-PROPAGATING BOWING SEGMENTS IN THE PRESENCE
OF LOW-LEVEL EAST-SOUTHEASTERLY WINDS. THE NET RESULT SHOULD BE FOR
CONTINUED SQUALL LINE/BOW SUSTENANCE ESPECIALLY NEAR/JUST NORTH OF
THE WARM FRONT...WITH OTHER STRONGER TSTMS ALSO POSSIBLE WITHIN THE
WARM SECTOR. ISOLATED DAMAGING WINDS AND PERHAPS A TORNADO WILL
REMAIN POSSIBLE INTO THIS EVENING FROM SOUTHEAST MS INTO SOUTHWEST
AL.

..GUYER.. 09/24/2013

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

ATTN...WFO...BMX...MOB...JAN...LIX...

LAT...LON 30758940 31428867 32198828 31638691 30328786 30758940

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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.