Wind Advisory 4, NWS Brownsville, TX

202 
WWUS74 KBRO 102349
NPWBRO

URGENT - WEATHER MESSAGE
National Weather Service Brownsville TX
649 PM CDT Tue Mar 10 2026

TXZ253>255-353>355-110100-
/O.EXP.KBRO.WI.Y.0004.000000T0000Z-260311T0000Z/
Southern Hidalgo-Inland Willacy-Inland Cameron-Northern Hidalgo-
Coastal Willacy-Coastal Cameron-
Including the cities of Brownsville, San Manuel, Raymondville,
Port Isabel, Pharr, Weslaco, Edinburg, McAllen, Laguna Vista,
Port Mansfield, Harlingen, and Mission
649 PM CDT Tue Mar 10 2026

...WIND ADVISORY WILL EXPIRE AT 7 PM CDT THIS EVENING...

The strength and frequency of wind gusts have decreased this 
evening.  Infrequent wind gusts above 35 MPH may continue for a few 
hours.

$$

60-BE

Area Forecast Discussion...UPDATED
National Weather Service Brownsville TX
622 AM CDT Tue Mar 10 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 617 AM CDT Tue Mar 10 2026

Key Messages:

- Unseasonably warm temperatures are expected through mid-week,
  with wind speeds picking up Tuesday due to a tightened pressure
  gradient.

- There is a low (20%) chance for showers and thunderstorms
  Tuesday night ahead of a cold front.

- A stronger front Wednesday night will likely bring more
  seasonable temperatures Thursday and Friday.

- Temperatures will be unseasonably warm again by the weekend,
  with no rain expected.

&&

.DISCUSSION...
Issued at 1042 PM CDT Mon Mar 9 2026

A cold front is forecast to move through Deep South Texas Tuesday
night into Wednesday morning, with a secondary front arriving
Wednesday night. A line of convection will likely develop along
the frontal boundary Tuesday as it moves across Central Texas,
with uncertainty on how far south this line may extend Tuesday
evening. The latest probabilistic guidance has rain chances around
20-30% for the western third of the CWA Tuesday night. The latest
HiRes model guidance keeps the majority of the convection north
of the CWA Tuesday evening/night, though the 0z run of the HRRR
does have a few showers or thunderstorms clipping the northwestern
portion of the CWA early Tuesday night.

With the timing of the front likely overnight, instability will
likely be decreasing in advance of the front, which will likely
decrease the potential for convection to develop or be sustained
along the front. However, ample wind shear ahead of the front
could support strong, but likely sub-severe, thunderstorms if any
convection is able to sustain itself overnight.

Temperatures behind this initial front will remain hot Wednesday,
with highs likely remaining in the low to mid 90s. However, this
air mass will be much drier which will likely allow relative
humidity values to fall to the teens to low 20s Wednesday
afternoon. Wind speeds will likely remain low enough Wednesday
afternoon to limit fire weather concerns.

The stronger front Wednesday night will likely allow high
temperatures to fall to the upper 70s to low 80s Thursday, before
gradually returning to the 90s over the weekend. Stronger winds
through the later half of the week and relative humidity values
between 20-30% could pose a risk for elevated fire weather
conditions Thursday and Friday.

&&

.AVIATION...
(12Z TAFS)
Issued at 617 AM CDT Tue Mar 10 2026

Most TAF sites are already seeing VFR conditions occurring, and
are likely to persist through the rest of the daytime and evening
hours. Winds are expected to be out of the southeast and could
even gust up to 30 knots. By the evening, the winds should weaken
a bit, but gusts could still get up to 25 knots. The overnight
hours could see some MVFR conditions return.

&&

.MARINE...
Issued at 1042 PM CDT Mon Mar 9 2026

Tightening pressure gradients ahead of a cold front will likely
result in stronger southeasterly winds Tuesday afternoon, likely
requiring Small Craft Should Exercise Caution headlines or Small
Craft Advisories for the Laguna Madre and nearshore Gulf waters.
Conditions will likely briefly improve Tuesday night into
Wednesday morning as the first of tow cold fronts move through the
region. However, stronger northerly winds in the wake of the
second front Wednesday night will likely result in another round
of hazardous marine conditions likely requiring Small Craft
Advisories for the Laguna Madre and Gulf waters.

&&

.PRELIMINARY POINT TEMPS/POPS...
BROWNSVILLE             87  72  93  63 /   0   0   0   0
HARLINGEN               90  70  94  57 /   0  10   0   0
MCALLEN                 93  73  97  62 /   0  10   0   0
RIO GRANDE CITY         95  69  94  61 /   0  20   0   0
SOUTH PADRE ISLAND      79  72  84  66 /   0   0   0   0
BAYVIEW/PORT ISABEL     86  70  90  62 /   0   0   0   0

&&

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

SHORT TERM...60
LONG TERM....60
AVIATION...64-Katz