Tuesday, November 8, 2011

MESO: Mesoscale Discussion 2304

ACUS11 KWNS 082148
SWOMCD
SPC MCD 082148
ARZ000-LAZ000-TXZ000-OKZ000-082315-

MESOSCALE DISCUSSION 2304
NWS STORM PREDICTION CENTER NORMAN OK
0348 PM CST TUE NOV 08 2011

AREAS AFFECTED...FAR SERN OK...WRN/CENTRAL AR...NERN TX AND NWRN LA.

CONCERNING...TORNADO WATCH 875...

VALID 082148Z - 082315Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 875 CONTINUES.

NUMEROUS THUNDERSTORMS...SOME SEVERE...CONTINUE TO SHIFT EWD FROM
WRN AR SSWWD INTO FAR SERN AR AND NERN TX. THE STORMS ARE OCCURRING
AHEAD OF A COLD FRONT...THAT STRETCHED FROM NEAR TUL/MLC SWD TO CLL.
THOUGH WIDESPREAD CLOUDS AND CONVECTION HAVE RESTRICTED SOME
HEATING/DESTABILIZATION ACROSS CENTRAL AR... STRONG FORCING COMBINED
WITH FAVORABLE SHEAR/WIND FIELDS WILL SUPPORT A THREAT FOR ROTATING
STORMS WITH WIND DAMAGE AND A TORNADO OR TWO.

THE GREATEST THREAT FOR SEVERE STORMS DURING THE NEXT HOUR OR SO
WILL EXIST AHEAD OF THE FRONT FROM SWRN AR SWWD INTO NERN TX. IN
THIS REGION...MLCAPES FROM 1000-1500 J/KG AND DEEP LAYER SHEAR NR 50
KT ARE FAVORABLE FOR SUPERCELLS. WITH LOW LEVEL SRH AROUND 250
M2/S2...TORNADOES ARE CERTAINLY POSSIBLE. HOWEVER...THE STORMS
DURING THE PAST HOUR OR SO HAVE STARTED TO CONSOLIDATE INTO
LINES/CLUSTERS...WHICH WOULD BE MORE SUPPORTIVE OF WIND DAMAGE AND
ISOLATED HAIL.

..IMY.. 11/08/2011

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

ATTN...WFO...LZK...SHV...TSA...HGX...FWD...

LAT...LON 31239540 32959523 34089511 35119425 35339324 35799217
35659162 32919336 31239447 31239540

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