338
FXUS64 KBRO 311713
AFDBRO

Area Forecast Discussion
National Weather Service Brownsville TX
1213 PM CDT Thu Jul 31 2025

...New DISCUSSION, AVIATION, MARINE...

.DISCUSSION...
Issued at 1211 PM CDT Thu Jul 31 2025

The trend of hot and rain-free is expected to continue through the
forecast period. With southeasterly flow over Deep South Texas and
the Rio Grande Valley persisting for the next several days, this
will allow for low-level moisture to flow into the region. While
this will bring the humidity up, the chances of rain are not
expected to increase due to high pressure aloft. This area of high
pressure is expected to persist over the region for the next several
days.

As for temperatures, the overnight low temperatures are expected to
in the mid to upper 70s. The high temperatures are generally
expected to be in the triple digits for most of the area. However
areas along the coast could be in the upper 90s. With the low-level
moisture flow, the heat indices are expected to be close to 110
almost every day. While still below Heat Advisory criteria, a
Special Weather Statement for elevated Heat Indices might be needed.
The Heat Risk for the forecast period is mostly Moderate (level 2 of
4), however there are a few pockets of Major (level 3 of 4) through
the valley. It is important to practice heat safety, stay hydrated,
and limit time outdoors during peak heating. Please visit
weather.gov/heatsafety for more information on staying safe in the
heat.

At the Lower Texas beaches, the swell and surf are expected to be
low for the next several days. As such, the risk of rip currently is
low for the next couple of days.

&&

.AVIATION...
(18Z TAFS)
Issued at 1211 PM CDT Thu Jul 31 2025

VFR conditions are expected to continue through the TAF cycle at
all TAF sites. Southeasterly winds are expected to continue
through the period as well, with gusty winds occurring during the
afternoon hours with gusts around 20 knots possible. With
southeasterly flow over the region, low- level clouds are expected
to move over the region, but shouldn`t affect the flight
categories.

&&

.MARINE...
Issued at 1211 PM CDT Thu Jul 31 2025

Gentle southerly to southeasterly winds and low seas will continue
through the week. Winds may become more gusty during the afternoons
along the coast with the sea breeze. There is a very low chances
(less than 10%) of rain each day.

&&

.PRELIMINARY POINT TEMPS/POPS...
BROWNSVILLE             78  97  78  96 /   0  10   0  10
HARLINGEN               75  99  76  98 /   0  10   0  10
MCALLEN                 78 102  79 102 /  10  10   0  10
RIO GRANDE CITY         76 103  77 103 /  10  10   0  10
SOUTH PADRE ISLAND      80  89  80  88 /   0  10   0  10
BAYVIEW/PORT ISABEL     78  95  77  94 /   0  10   0  10

&&

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

$$

SHORT TERM...64-Katz
LONG TERM....64-Katz
AVIATION...64-Katz