000
ACUS11 KWNS 190500
SWOMCD
SPC MCD 190459
SDZ000-NDZ000-190600-

MESOSCALE DISCUSSION 0691
NWS STORM PREDICTION CENTER NORMAN OK
1159 PM CDT SAT MAY 18 2013

AREAS AFFECTED...E-CNTRL AND NERN SD

CONCERNING...SEVERE THUNDERSTORM WATCH 173...

VALID 190459Z - 190600Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 173
CONTINUES.

SUMMARY...SOME STRONG-SEVERE STORM THREAT MAY PERSIST BEYOND 0600Z
SEVERE WATCH EXPIRATION TIME.  A LOCAL WATCH EXTENSION-IN-TIME MAY
BE BEST SUITED TO ADDRESS THIS POSSIBILITY.

DISCUSSION...A BROKEN SQUALL LINE IS MOVING NEWD OVER CNTRL AND INTO
E-CNTRL SD.  FARTHER N...A CLUSTER OF SUB-SEVERE STORMS NEAR AND E
OF THE MO RIVER OVER N-CNTRL SD HAVE PROTRUDED A GUST FRONT E OF
THIS ONGOING CONVECTION.  CURRENT THINKING IS A STRONG TO PERHAPS
SEVERE WIND GUST THREAT WILL CONTINUE THROUGH 0600Z AND PERHAPS
PERSIST UNTIL THE 0700Z TIMEFRAME AS THE SQUALL LINE EVENTUALLY
MOVES PAST THE NERN PORTION OF THE WATCH.

..SMITH.. 05/19/2013

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

ATTN...WFO...FSD...ABR...BIS...

LAT...LON   43959896 44589970 45689910 45959819 44799809 43959896