468
FXUS64 KBRO 061113 AAB
AFDBRO

Area Forecast Discussion...UPDATED
National Weather Service Brownsville TX
613 AM CDT Sun Jul 6 2025

...New AVIATION...

.SHORT TERM...
(Tonight through Monday night)
Issued at 1041 PM CDT Sat Jul 5 2025

The weather pattern over the past few days continues into the short
term period, featuring a slight pressure gradient between a slowly
dissipating low pressure system over central Texas and a high
pressure over the Gulf, resulting in southeasterly winds, breezy at
times, with gusts up to 25-30 mph on Sunday and 20-25 mph on Monday
expected. There remains a low to medium (20-30%) chance of showers
and/or thunderstorms along the afternoon seabreeze boundaries on
Sunday and Monday, with a slight increase in coverage on Monday as a
weak mid-level low pressure over the western Gulf decreases
subsidence aloft and southeasterly surface winds advect higher
moisture content northwestward into the CWA from a weak disturbance
to the southeast. The highest chances remain along and east of US-
281. Heavy rain, frequent lightning and gusts up to 40 mph are
possible in stronger storms on Monday. Increased cloud coverage is
expected to continue to lead to slightly below average highs, with
low to mid 90s inland and mid 80s along the coastline and overnight
lows in the 70s likely. A minor (level 1 of 4) heat risk is expected
across most of inland deep south Texas on Sunday and Monday
afternoons while South Padre Island and the more populated areas of
the RGV experience a moderate (level 2 of 4) risk.

A moderate risk of rip currents tonight decreases to a low risk on
Sunday and Sunday night as winds and seas decrease.

&&

.LONG TERM...
(Tuesday through next Sunday)
Issued at 1041 PM CDT Sat Jul 5 2025

The mid-level low continues to produce a low to medium (20-30%)
chance of showers and thunderstorms Tuesday afternoon. Following,
ridging and subsidence aloft increase again by the middle of next
week, causing PoP`s to decrease from a low (20%) chance on
Wednesday to less than a 10% for the remainder of next week and
weekend. Increased cloud coverage is expected to keep high
temperatures in the low to mid 90s through Wednesday. Drier air
upstream is expected to lower PWAT`s below 1.7 inches, which is
near average, Thursday through Sunday, resulting in more sun and
an increase in high temperatures, with most areas peaking into the
mid to upper 90`s, possibly as high as 100 degrees in the Rio
Grande Plains, while mid-80`s continue at the coast and overnight
lows fall to the 70s inland to near 80 degrees at the coast.
Moderate heat risks continue for the populated regions of the RGV
(minor elsewhere), expanding to the majority of deep south Texas
throughout next weekend.

&&

.AVIATION...
(12Z TAFS)
Issued at 610 AM CDT Sun Jul 6 2025

VFR to MVFR conditions are being observed currently at area
airports and are expected to be fully VFR by 16z. Winds will be
southeasterly and could become gusty as soon as 16-18z.

&&

.MARINE...
Issued at 1041 PM CDT Sat Jul 5 2025

Now through Next Sunday...A tightens pressure gradient between a
low pressure system over central Texas and high pressure over the
Gulf, will continue to result in mostly moderate southeasterly
winds and slight to moderate seas through Monday, with gradual
loosening of the gradient expected. Slight to moderate
southeasterly winds return by Tuesday along with slight to
moderate (2-3 feet) seas continuing. There is a low to medium
(20-40%) chance of showers and thunderstorms on Monday into
Wednesday.

&&

.PRELIMINARY POINT TEMPS/POPS...
BROWNSVILLE             91  78  91  79 /  10   0  20  20
HARLINGEN               93  75  93  76 /  20   0  20  10
MCALLEN                 94  78  95  78 /  20   0  20  10
RIO GRANDE CITY         94  76  93  76 /  10  10  10   0
SOUTH PADRE ISLAND      86  79  86  79 /  10   0  20  20
BAYVIEW/PORT ISABEL     90  77  90  77 /  10   0  20  10

&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...None.
GM...None.
&&

$$

SHORT TERM...65-Irish
LONG TERM....65-Irish
AVIATION...55-MM