881
FXUS64 KBRO 090527 AAA
AFDBRO

Area Forecast Discussion...UPDATED
National Weather Service Brownsville TX
1227 AM CDT Tue Jun 9 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 1224 AM CDT Tue Jun 9 2026

- Hot and dry conditions for much of the week. Low to medium rain
  chances return Friday into the weekend.

- Temperatures increase to the mid to upper 90s across much of the
  region. Moderate Heat Risk is expected through the week.

&&

.DISCUSSION...
Issued at 1018 PM CDT Mon Jun 8 2026

Mid-level ridging and high pressure over the Gulf will dominate the
weather pattern through much of the week, leading to warmer and
generally drier conditions across deep South Texas. While sufficient
low-level moisture will remain in place (PWATs around 2"), rain
chances will stay low (10% or less) through Thursday, with isolated
coastal and sea breeze showers during the day possible. An inverted
trough moving westward late in the week may advect deep tropical
moisture into deep S TX and support an increase in isolated shower
and thunderstorm activity Friday through the weekend. Rain chances
increase to low (10-20%) Friday, and low to moderate (20-50%) for
much of the weekend. There is uncertainty around how far north this
atmospheric moisture will reach, so continue to monitor the forecast
for updates.

The main concern this workweek will be heat. High temperatures
in the mid to upper 90s, with heat indices ranging from 100 to
110 degrees will maintain a Moderate Risk of heat related illness
through the week.

At local beaches, a moderate rip current risk continues Tuesday.
In the latter half of the week, hazardous beach conditions
including increased rip current risk and minor coastal flooding
are possible as swell periods increase and the approach of a new
moon raises tides.

&&

.AVIATION...
(06Z TAFS)
Issued at 1224 AM CDT Tue Jun 9 2026

MVFR to VFR will prevail at the aerodromes through the next 24
hours. Light winds for the nighttime hours will become breezy
during daylight. Convection is not anticipated for Tuesday, but it
may need to be included in the next TAF issuance if models become
more aggressive and suggest it.

&&

.MARINE...
Issued at 1018 PM CDT Mon Jun 8 2026

Rain chances diminish tonight, with low chances expected through the
week. Moderate southeasterly flow and slight to moderate seas
persist, with swell building through the end of the week. Rain
chances return this weekend.

&&

.PRELIMINARY POINT TEMPS/POPS...
BROWNSVILLE             93  81  93  81 /   0  10   0   0
HARLINGEN               93  77  93  78 /  10  10   0   0
MCALLEN                 96  79  96  80 /   0  10  10   0
RIO GRANDE CITY         96  77  97  78 /   0   0   0   0
SOUTH PADRE ISLAND      87  83  87  83 /   0  10   0   0
BAYVIEW/PORT ISABEL     90  81  90  81 /   0  10   0   0

&&

.BRO WATCHES/WARNINGS/ADVISORIES...None.

&&

$$