MESOSCALE DISCUSSION 2322
   NWS STORM PREDICTION CENTER NORMAN OK
   0702 PM CST FRI DEC 29 2006
   
   AREAS AFFECTED...N TX AND SRN OK
   
   CONCERNING...TORNADO WATCH 887...
   
   VALID 300102Z - 300200Z
   
   ISOLATED SEVERE THREAT EXPECTED TO CONTINUE ACROSS VALID PART OF WW
   887 THROUGH 02Z...AS TSTMS SPREAD NWD ACROSS N TX AND SRN OK.
   
   NEW WW DOES NOT APPEAR TO BE NEEDED ACROSS THIS REGION.
   
   REGIONAL RADARS DURING THE LAST HOUR SHOWED A BROKEN SQUALL LINE
   MOVING NNE AT 45 KT THROUGH N TX AND SW OK...WITH THIS LINE
   CURRENTLY EXTENDING FROM SW OK IN COTTON/COMANCHE COUNTIES TO
   JOHNSON COUNTY TX.  OBJECTIVE ANALYSES INDICATED THE LIKELIHOOD FOR
   SURFACE BASED STORMS DECREASING WITH TIME AS THE BOUNDARY LAYER
   STABILIZES AHEAD OF THE ADVANCING SQUALL LINE ACROSS MUCH OF WW 887.
   THIS IS INDICATED BY THE OUN/FTW 00Z SOUNDINGS WITH ELEVATED MUCAPE
   RANGING FROM 300-600 J/KG.  EFFECTIVE BULK SHEAR WILL REMAIN STRONG
   ENOUGH FOR ROTATING ELEVATED STORMS...WITH HAIL BEING THE PRIMARY
   THREAT THROUGH THE EVENING.  ONE SUCH ROTATING STORM /LEFT MOVER/
   TRACKED FROM MONTAGUE COUNTY TX NNWWD INTO JEFFERSON/STEPHENS
   COUNTIES OK PRODUCING A NICKEL SIZE HAIL REPORT AT 0039Z.
   
   ..PETERS.. 12/30/2006
   
   
   ATTN...WFO...SHV...TSA...FWD...OUN...
   
   32689564 32599753 33139756 33629823 33929861 34409912
   34869880 34939710 34779569