581
FXUS64 KBRO 251118 AAA
AFDBRO
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
618 AM CDT SUN OCT 25 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 616 AM CDT SUN OCT 25 2026
- MAINLY DRY, BUT THERE WILL BE DAY-TO-DAY OR NEAR DAY-TO-DAY CHANCES
FOR SHOWERS AND MAYBE A THUNDERSTORM OR TWO THROUGH THURSDAY OR
FRIDAY OF NEXT WEEK; LOW-MEDIUM CHANCES (20-60%) MONDAY THROUGH
THURSDAY.
- TEMPERATURES WILL AVERAGE OUT NORMAL TO WARMER THAN NORMAL
THROUGH NEXT WEEKEND. HOTTER THAN NORMAL TEMPERATURES (90S) WILL
DEVELOP BY NEXT WEEKEND AMID A BUILDING HEAT RIDGE.
DISCUSSION
ISSUED AT 1031 PM CDT SAT OCT 24 2026
MAINLY DRY CONDITIONS CAN BE EXPECTED THROUGH THE FORECAST PERIOD OR
THROUGH NEXT WEEKEND ACROSS DEEP SOUTH TEXAS. HOWEVER, THERE WILL BE
LOW-MEDIUM (20-60%) DAY-TO-DAY RAIN CHANCES BEGINNING MONDAY AND
PERSISTING THROUGH THURSDAY OR FRIDAY, COURTESY OF A NEARBY MID-
UPPER LEVEL SHORTWAVE DISTURBANCE. EMBEDDED THUNDERSTORMS ARE
POSSIBLE WITH ANY SHOWERS THAT DO DEVELOP. MOST OF THE ACTIVITY WILL
BE ISOLATED TO SCATTERED AND DIURNALLY DRIVEN. BY FRIDAY OR
SATURDAY, RAIN CHANCES DECREASE AS THE AFOREMENTIONED SHORTWAVE
DISSOLVES AND HIGH PRESSURE BUILDS INTO THE REGION.
DESPITE THE RIDGE FLATTENING OUT DURING MUCH OF THE FORECAST PERIOD,
GEOPOTENTIAL HEIGHTS WILL STILL BE POSITIVE ON A SOUTHWEST FLOW
ALOFT REGIME TO KEEP TEMPERATURES RUNNING NORMAL TO WARMER THAN
NORMAL THROUGH NEXT WEEKEND. HOTTER THAN NORMAL TEMPERATURES RETURN
BY NEXT WEEKEND AS A 591 DAM HEAT RIDGE BUILDS OVER THE REGION. HIGH
TEMPERATURES SUNDAY THROUGH FRIDAY WILL RANGE BETWEEN THE MID 80S
NEAR THE COAST TO THE LOWER 90S FAR WEST. NEXT WEEKEND, HIGH
TEMPERATURES WILL RANGE BETWEEN THE LOW TO MID 90S.
AVIATION
(12Z TAFS)
ISSUED AT 616 AM CDT SUN OCT 25 2026
VFR WILL PREVAIL AT THE AERODROMES THROUGH THE NEXT 24 HOURS,
WITH LIGHT TO MODERATE WINDS WITH BREEZY GUSTS. A TEMPO REMAINS
IN THE TAFS WITH TIMING BASED ON THE HRRR MODEL.
MARINE
ISSUED AT 1031 PM CDT SAT OCT 24 2026
ADVERSE MARINE CONDITIONS ARE EXPECTED THROUGH THE FORECAST
PERIOD. SMALL CRAFT EXERCISE CAUTION (SCEC) CONDITIONS CAN BE
EXPECTED THROUGH THE FORECAST PERIOD OR THROUGH NEXT WEEK, THANKS
TO A PERSISTENT AND INCREASING EASTERLY SWELL AND ON OCCASIONS
AFTERNOON WINDS. DAY-TO-DAY CHANCES FOR SHOWERS AND THUNDERSTORMS
ARE POSSIBLE OVER THE LAGUNA MADRE AND GULF WATERS THROUGH AT
LEAST THE MIDDLE PARTS OF NEXT WEEK.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 85 70 86 72 / 10 0 20 40
HARLINGEN 85 67 86 68 / 10 0 20 30
MCALLEN 88 69 90 71 / 10 0 10 10
RIO GRANDE CITY 88 67 89 68 / 0 0 0 0
SOUTH PADRE ISLAND 80 73 79 73 / 10 10 20 70
BAYVIEW/PORT ISABEL 83 69 83 69 / 10 0 20 60
BRO WATCHES/WARNINGS/ADVISORIES
NONE.
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