Tuesday, September 20, 2011

MESO: Mesoscale Discussion 2196

ACUS11 KWNS 201727
SWOMCD
SPC MCD 201726
GAZ000-FLZ000-201830-

MESOSCALE DISCUSSION 2196
NWS STORM PREDICTION CENTER NORMAN OK
1226 PM CDT TUE SEP 20 2011

AREAS AFFECTED...SERN GA

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 201726Z - 201830Z

CLUSTERS OF STORMS LIFTING NWD ACROSS SERN GA MAY ACQUIRE BRIEF
UPDRAFT ROTATION AND POSE A MARGINAL THREAT FOR SHORT-LIVED
TORNADOES. HOWEVER...THE SVR WEATHER THREAT IS EXPECTED TO BE TOO
LOW TO WARRANT A WW.

AT 17Z...COMPOSITE REFLECTIVITY SHOWED A CLUSTER OF STORMS LIFTING
NWD OVER SERN GA...WITH MORE DISCRETE ACTIVITY TRAILING SWD INTO FAR
NRN FL. STORMS OVER GA ARE MOVING ACROSS AN E-W ORIENTED LOW-LEVEL
BAROCLINIC ZONE...WITH WINDS S OF THE BOUNDARY OVER NRN FL
SELY...BACKING TO E-NELY OVER THE COOL SIDE OF THE BOUNDARY IN ERN
GA. STRONGLY VEERING VERTICAL WIND PROFILES MAY AID IN BRIEF UPDRAFT
ROTATION/SHORT-LIVED TORNADO THREAT AS VERY MOIST BOUNDARY LAYER
CONTINUES TO HEAT UP DURING THE AFTERNOON. HOWEVER...THE SVR WEATHER
THREAT IS EXPECTED TO BE VERY MARGINAL...PRECLUDING THE NEED FOR A
WW.

..GARNER.. 09/20/2011

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

ATTN...WFO...CHS...JAX...FFC...TAE...

LAT...LON 31988309 32058189 31588107 30488151 30578335 31988309

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