MESO: Mesoscale Discussion 0611

ACUS11 KWNS 092020
SWOMCD
SPC MCD 092019
TXZ000-092115-

MESOSCALE DISCUSSION 0611
NWS STORM PREDICTION CENTER NORMAN OK
0319 PM CDT THU MAY 09 2013

AREAS AFFECTED...CENTRAL TX

CONCERNING...SEVERE THUNDERSTORM WATCH 150...

VALID 092019Z - 092115Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 150
CONTINUES.

SUMMARY...SEVERE THREAT CONTINUES IN THE SHORT TERM ACROSS PRIMARILY
THE SERN QUADRANT AND WRN THIRD OF WW. UPWARD GROWTH IN CONVECTION
IS EXPECTED ACROSS WRN PORTIONS OF THE WATCH OVER THE NEXT FEW
HOURS.

DISCUSSION...MCS CONTINUES TO EVOLVE AS IT SLOWLY MATURES AND
PROPAGATES ACROSS CNTRL TX. LEADING EDGE OF STRONGEST ACTIVITY IS
SPREADING ESEWD AT ROUGHLY 30-35KT AND SHOULD SPREAD OUT OF WW150
INTO BRAZOS/MADISON COUNTIES AFTER 21Z. LATEST WDSS-II DATA
CONTINUES TO SUGGEST LARGE HAIL IN EXCESS OF GOLF BALLS MAY BE NOTED
WITH THE STRONGEST CORE.

UPSTREAM...STRONG HEATING ACROSS WCNTRL TX HAS CONTRIBUTED TO A MUCH
STEEPER LAPSE RATE ENVIRONMENT BETWEEN ABI-SJT. SCATTERED SEVERE
THUNDERSTORMS ARE EXPECTED TO GRADUALLY EXPAND IN AREAL COVERAGE
ACROSS THE WRN THIRD OF THE WW OVER THE NEXT FEW HOURS WITH ACTIVITY
EXPECTED TO GRADUALLY TURN SEWD AS STORM MERGERS PROMOTE ANOTHER
POTENTIAL SMALL MCS ACROSS THIS REGION.

..DARROW.. 05/09/2013

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

ATTN...WFO...SHV...HGX...FWD...EWX...SJT...MAF...

LAT...LON 32510089 33049545 31009545 30490089 32510089

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