183
FXUS64 KBRO 181120 AAA
AFDBRO
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
620 AM CDT SUN OCT 18 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 618 AM CDT SUN OCT 18 2026
- ANOTHER COOL NIGHT IS EXPECTED WITH LIGHT WINDS AND CLEAR SKIES;
SUNDAY WILL FEATURE ANOTHER COOL DAY WITH HIGHS MAINLY IN THE
70S.
- A WARMING TREND BEGINS NEXT WEEK WITH HIGHS GENERALLY IN THE MID-
UPPER 80S TO LOWER 90S (WARMEST WEST).
- THERE WILL BE DAY-TO-DAY OR NEAR DAY-TO-DAY LOW-MEDIUM (20-50%)
RAIN CHANCES SUNDAY THROUGH WEDNESDAY; BEST CHANCES WILL BE
NEAR/ALONG THE COAST AND OVER THE GULF WATERS.
DISCUSSION
ISSUED AT 1053 PM CDT SAT OCT 17 2026
OUR FIRST TASTE OF AUTUMN CONTINUES THIS WEEKEND ACROSS DEEP SOUTH
TEXAS AND THE RIO GRANDE VALLEY, WITH TEMPERATURES RANGING 10-20F
DEGREES BELOW AVERAGE FOR MID-OCTOBER STANDARDS. NORTHERLY WINDS
HAVE EASED FROM THIS AFTERNOON. SUFFICIENT RADIATIONAL COOLING
THROUGH THE COMBINATION OF LIGHT WINDS AND CLEAR SKIES WILL RESULT
IN OVERNIGHT LOWS FALLING INTO THE 50S TONIGHT. CONTINUED COOL AIR
ADVECTION (CAA) ON SUNDAY WILL HELP TO HOLD HIGH TEMPERATURES IN THE
70S MOST PLACES.
A WARMING TREND WILL COMMENCE ON MONDAY AND CONTINUE THROUGH THE
UPCOMING WORKWEEK AS A 588-591 DAM HEAT RIDGE STRENGTHENS OVER THE
REGION. HIGH TEMPERATURES GENERALLY WILL RANGE BETWEEN THE MID-UPPER
80S TO LOW 90S (WARMEST WEST) EACH DAY FOR THE UPCOMING WORKWEEK.
THERE WILL DAY-TO-DAY OR NEAR DAY-TO-DAY LOW-MEDIUM (20-50%) CHANCES
FOR RAIN SHOWERS SUNDAY THROUGH WEDNESDAY, COURTESY OF A NEARBY WEAK
SHORTWAVE TROUGH. THE BEST CHANCES WILL BE NEAR/ALONG THE COAST
(I.E. ALONG/EAST OF IH-69E) AND OVER THE GULF WATERS.
AVIATION
(12Z TAFS)
ISSUED AT 618 AM CDT SUN OCT 18 2026
VFR IS ANTICIPATED AT THE AERODROMES THROUGH THE NEXT 24 HOURS,
WITH GENERALLY LIGHT WINDS AND PARTLY TO MOSTLY CLOUDY SKIES.
MARINE
ISSUED AT 1053 PM CDT SAT OCT 17 2026
ADVERSE MARINE CONDITIONS WILL CONTINUE INTO THE UPCOMING WORKWEEK.
OUR SMALL CRAFT ADVISORY WILL EXPIRE AT 1AM CDT. SMALL CRAFT
EXERCISE CAUTION (SCEC) CONDITIONS WILL CONTINUE SUNDAY THROUGH MUCH
OF THE WEEK. OTHERWISE, DAY-TO-DAY OR NEAR DAY-TO-DAY RAIN CHANCES
WILL EXIST THROUGH WEDNESDAY OF NEXT WEEK.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 78 67 83 71 / 10 30 30 20
HARLINGEN 79 64 84 68 / 10 20 40 10
MCALLEN 80 65 86 70 / 0 0 10 10
RIO GRANDE CITY 78 63 85 68 / 0 0 0 10
SOUTH PADRE ISLAND 77 72 81 76 / 40 30 50 20
BAYVIEW/PORT ISABEL 77 67 82 72 / 30 30 50 20
BRO WATCHES/WARNINGS/ADVISORIES
TX...COASTAL FLOOD ADVISORY UNTIL 7 AM CDT THIS MORNING FOR TXZ451-
454-455.
HIGH RIP CURRENT RISK UNTIL 7 AM CDT THIS MORNING FOR TXZ451-454-
455.
HIGH SURF ADVISORY UNTIL 7 AM CDT THIS MORNING FOR TXZ451-454-
455.
GM...NONE.
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