961
AWUS01 KWNH 261415
FFGMPD
TXZ000-261710-
MESOSCALE PRECIPITATION DISCUSSION 1253
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
914 AM EST WED NOV 26 2025
AREAS AFFECTED...SOUTH TEXAS
CONCERNING...HEAVY RAINFALL...FLASH FLOODING POSSIBLE
VALID 261410Z - 261710Z
SUMMARY...ISOLATED FLASH FLOOD POTENTIAL WILL CONTINUE FOR ANOTHER
2-3 HOURS ACROSS SOUTH TEXAS.
DISCUSSION...FLASH FLOOD POTENTIAL CONTINUES. RECENT
SATELLITE/OBJECTIVE ANALYSES DEPICT A WEAK MID-LEVEL SHORTWAVE
TROUGH MOVING OVER SOUTH TEXAS, CONTINUING TO INITIATE AND
MAINTAIN DEEP MOIST CONVECTION ALONG A SYNOPTIC FRONTAL ZONE OVER
THE AREA (EXTENDING FROM RIO GRANDE CITY EAST TO PADRE ISLAND AND
GULF OF AMERICAN WATERS). 1.5+ INCH PW VALUES AND 2000 J/KG
SBCAPE CONTINUES TO SUPPORT EFFICIENT RAINFALL PROCESSES WITH
STORMS. MEANWHILE, KINEMATICS (WITH WEAK FLOW BELOW 500MB)
CONTINUE TO SUPPORT SLOW CELL MOVEMENT AND SPOTS OF 2-3 INCH/HR
RAIN RATES. WHILE THERE'S STILL AN APPRECIABLE CHANCE FOR THESE
RATES TO MATERIALIZE ALONG MORE POPULATED/URBANIZED AREAS NEAR THE
RIO GRANDE (I.E., BROWNSVILLE, HARLINGEN, ETC.) AND PROMPT FLASH
FLOODING, OVERALL CONVECTIVE TRENDS SUGGEST THAT EVENTUAL
LOW-LEVEL STABILIZATION (DUE TO OVERTURNING AND COOLER AIR
FILTERING INTO THE REGION FROM THE NORTH) SHOULD RESULT IN FLASH
FLOOD POTENTIAL DECREASING ESPECIALLY AFTER 16-17Z.
COOK
..PLEASE SEE WWW.WPC.NCEP.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...BRO...CRP...
ATTN...RFC...FWR...NWC...
LAT...LON 27419817 26809699 25819722 26319917 26819957
27299962
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