ZCZC SPCSWOMCD ALL
ACUS11 KWNS 270152 
SPC MCD 270152 
OKZ000-TXZ000-270245-

MESOSCALE DISCUSSION 0468
NWS STORM PREDICTION CENTER NORMAN OK
0852 PM CDT TUE APR 26 2016

AREAS AFFECTED...PORTIONS OF CNTRL/ERN OK AND N-CNTRL INTO CNTRL TX

CONCERNING...TORNADO WATCH 109...

VALID 270152Z - 270245Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 109 CONTINUES.

SUMMARY...PRIMARY THREAT ACROSS WW 109 HAS TRANSITIONED TO DAMAGING
WINDS...WITH A SECONDARY THREAT OF MARGINALLY SEVERE HAIL AND
PERHAPS AN ISOLATED TORNADO EMBEDDED WITHIN THE SQUALL LINE.

DISCUSSION...AN EXTENSIVE MCS EXTENDS FROM S-CNTRL KS ACROSS ALL OF
CNTRL OK AND CONTINUES SWD TO PORTIONS OF CNTRL TX. MODIFYING THE
00Z SOUNDING FROM OUN FOR CURRENT SFC CONDITIONS SUGGESTS MLCAPE ON
THE ORDER OF 2500-3000 J/KG IS PRESENT ACROSS CNTRL OK...WHICH WILL
CONTINUE TO SUPPORT WIDESPREAD STRONG TO DAMAGING WINDS ACROSS MUCH
OF CNTRL OK. FURTHER S ACROSS PORTIONS OF N-CNTRL INTO CNTRL
TX...THE LINE ACRS SWWD...AND THE AIRMASS DOWNSTREAM ALSO REMAINS
STRONGLY UNSTABLE PER THE 00Z FWD SOUNDING. EMBEDDED MESOVORTICES
WITHIN THE LINE MAY BE CAPABLE OF PRODUCING A BRIEF/ISOLATED TORNADO
WITH 0-1 SRH IN EXCESS OF 250 M2/S2 PER KTLX AND KFWD VWPS. ANY
SUPERCELL THAT CAN FORM AHEAD OF THE MCS WOULD HAVE A BETTER CHANCE
OF PRODUCING A TORNADO...SUCH AS THE CELL IN COOKE COUNTY TX AS OF
0145Z.

..GLEASON.. 04/27/2016

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

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

LAT...LON   31110065 31079847 31819674 32379602 33049582 35489502
            36909534 36879778 35359814 33659844 32499932 31990038
            31110065 

NNNN