[MCD] SWOMCD

Sat Apr 29 01:44:51 UTC 2006

ACUS11 KWNS 290144
SWOMCD
SPC MCD 290144 
OKZ000-TXZ000-290315-

MESOSCALE DISCUSSION 0686
NWS STORM PREDICTION CENTER NORMAN OK
0844 PM CDT FRI APR 28 2006

AREAS AFFECTED...SOUTHERN OK...NORTH CENTRAL TX

CONCERNING...TORNADO WATCH 258...

VALID 290144Z - 290315Z

...SEVERE THREAT IS INCREASING ACROSS THE METROPLEX...

COMPLEX PATTERN HAS EVOLVED ACROSS NORTH CENTRAL TX INTO THE RED
RIVER REGION OF SRN OK THIS EVENING.  STRENGTHENING WARM ADVECTION
BENEATH LLJ APPEARS TO BE PARTLY RESPONSIBLE FOR EXPANDING SEVERE
CLUSTERS ALONG THE RED RIVER...TRAILING SWWD INTO STEPHENS COUNTY
TX.  ONE LONG LIVED DESTRUCTIVE SUPERCELL OVER GRAYSON COUNTY TX
SEEMS TO HAVE BEEN ENHANCED BY STRONG LOW LEVEL SHEAR ALONG
RETREATING BOUNDARY THAT IS LOSING IDENTITY OVER NERN TX.  RECENT
TRENDS SUGGEST AN UPWARD EXPANSION OF ACTIVITY FROM WEST-NORTH OF
THE METROPLEX. THIS CONVECTION WILL SPREAD ACROSS THE REMAINDER OF
NORTH CENTRAL TX LATER THIS EVENING INTO THE EARLY MORNING HOURS.

ADDITIONAL THUNDERSTORM DEVELOPMENT IS EXPECTED ALONG ADVANCING COLD
FRONT AS IT SWEEPS SEWD LATER TONIGHT.

..DARROW.. 04/29/2006

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

ATTN...WFO...TSA...FWD...OUN...

34199808 34449553 33629538 33399626 32979682 32339750
32339892 

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