000
ACUS11 KWNS 232033
SWOMCD
SPC MCD 232032
TXZ000-232200-

MESOSCALE DISCUSSION 0784
NWS STORM PREDICTION CENTER NORMAN OK
0332 PM CDT THU MAY 23 2013

AREAS AFFECTED...PANHANDLE/NWRN TX

CONCERNING...TORNADO WATCH 213...

VALID 232032Z - 232200Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 213 CONTINUES.

SUMMARY...GREATEST NEAR-TERM POTENTIAL FOR VERY LARGE HAIL...SEVERE
WINDS AND MESOCYCLONE TORNADOES SHOULD REMAIN WITH A SUPERCELL
CLUSTER IN THE ERN HALF OF THE LUB CWA. ADDITIONAL TSTMS MAY DEVELOP
BY 22Z ALONG THE OCCLUDED OUTFLOW/FRONT FARTHER NW IN THE WRN TX
PANHANDLE.

DISCUSSION...SUPERCELL OVER FLOYD COUNTY HAS PERSISTENTLY MOVED
SLOWLY SWD...WHILE ADDITIONAL UPDRAFTS HAVE FORMED SEWD ON THE COOL
SIDE OF THE INCREASINGLY DIFFUSE LARGER-SCALE OUTFLOW BOUNDARY. WITH
60S SURFACE DEW POINTS PERSISTING N/E OF THE OUTFLOW ACROSS THE LOW
ROLLING PLAINS INTO N-CNTRL TX /SAMPLED BY 20Z FWD RAOB/...AND
SURFACE TEMPERATURES S/W OF THE BOUNDARY FROM 95-100 DEG F...LARGE
INSTABILITY WILL REMAIN FAVORABLE FOR ALL SEVERE HAZARDS WITH
ACTIVITY GRADUALLY SHIFTING S/SEWD.

FARTHER NW...INITIAL CONVECTIVE ATTEMPTS HAVE FAILED TO YIELD TSTMS
ALONG THE SLOWLY WWD-PROGRESSING OUTFLOW WHICH HAS ESSENTIALLY
OCCLUDED WITH THE REMNANT QUASI-STATIONARY FRONTAL ZONE. ALTHOUGH
TEMPERATURES ARE NOT QUITE AS WARM AS FARTHER S...REINFORCING
OUTFLOW FROM THE SUPERCELL CLUSTERS MAY YIELD SUSTAINABLE CONVECTIVE
DEVELOPMENT INTO THE WRN TX PANHANDLE.

..GRAMS.. 05/23/2013

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

ATTN...WFO...OUN...SJT...LUB...AMA...MAF...

LAT...LON   34210044 33809969 33189959 32789978 32650017 32530071
            32960149 33780214 34380237 35110256 35410245 35550224
            35490202 35180199 34620190 34400163 34160095 34210044