MESOSCALE PRECIPITATION DISCUSSION 0063
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
902 AM EDT SAT MAY 25 2013
 
AREAS AFFECTED...SOUTH AND CENTRAL TX 
 
CONCERNING...HEAVY RAINFALL...FLASH FLOODING POSSIBLE 
 
VALID 251259Z - 251559Z
 
CELLS WHICH CAN PRODUCE 1 TO 2 INCHES OF RAIN PER HOUR...WITH
LOCALIZED RATES OF 3 TO 4 INCHES PER HOUR...WILL CONTINUE THROUGH
1530Z OVER PORTIONS OF CENTRAL AND SOUTH TX...WITH FLASH FLOODING
POSSIBLE UNDER THE MOST ACTIVE CONVECTION. 

12Z SOUNDING SHOW AN AXIS OF DEEP MOISTURE ALREADY IN PLACE WITH
MOISTURE TRANSPORT FORECAST TO CONTINUE DRAWING THAT DEEP MOISTURE
NORTHWARD FROM THE GULF OF MEXICO INTO A QUASI STATIONARY SHEAR
AXIS.  RAINFALL RATES OF 3 TO 4 INCHES PER HOUR HAVE ALREADY BEEN
REPORTED AND WE EXPECT ANY ADDITIONAL CELLS WHICH FORM WILL ALSO
BE CAPABLE OF PRODUCING VERY HIGH RAINFALL RATES.  GIVEN SLOW
MOTION OF THE SHEAR AXIS AND CONTINUED MOISTURE INFLUX...EXPECT
ANY FLASH FLOODING FROM ON GOING CONVECTION WILL BE SUSTAINED AND
THE POTENTIAL EXISTS FOR ADDITIONAL FLASH FLOODING WITHIN THE
REGION THROUGH AT LEAST 1530Z.  

BANN


ATTN...WFO...CRP...EWX...BRO...

LAT...LON   27669852 28999913 30979839 30529728 29259765 28249755
            27249796 27669852