NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION. Privacy and Cookie policy

GMZ130 Laguna Madre From The Port Of Brownsville To The Arroyo Colorado- Laguna Madre From The Arroyo Colorado To 5 Nm North Of Port Mansfield Tx- Laguna Madre From 5 Nm North Of Port Mansfield To Baffin Bay Tx- 900 Am Cst Tue Nov 28 2023
Rest of today..North winds 10 to 15 knots. A moderate chop on the bay.
Tonight..Northeast winds 5 to 10 knots. Light chop on the bay.
Wednesday..East winds 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. Light chop on the bay becoming a moderate chop in the afternoon. A slight chance of rain in the afternoon.
Wednesday night..Southeast winds 10 to 15 knots becoming south 15 to 20 knots after midnight. A moderate chop on the bay becoming choppy after midnight. A chance of showers in the evening. A slight chance of Thunderstorms. A slight chance of showers after midnight.
Thursday..South winds 15 to 20 knots with gusts up to 35 knots. Choppy on the bay.
Thursday night..South winds 15 to 20 knots with gusts up to 35 knots. Choppy on the bay.
Friday..Northeast winds 5 to 10 knots becoming north 10 to 15 knots in the afternoon. Light chop on the bay becoming a moderate chop in the afternoon.
Friday night..Northeast winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. A moderate chop on the bay becoming light chop after midnight.
Saturday..North winds 5 to 10 knots. Light chop on the bay. A slight chance of showers in the afternoon.
Saturday night..Northeast winds 5 to 10 knots becoming north after midnight. Light chop on the bay. A slight chance of showers.
winds and waves higher in and near Thunderstorms.

GMZ100 900 Am Cst Tue Nov 28 2023
Synopsis..Light to moderate winds and moderate seas through Wednesday. Conditions will deteriorate Wednesday night through Thursday night as southeast winds strengthen and seas build. Light to moderate northeast winds and moderate seas will prevail Friday through the weekend as high pressure flows over the lower texas coast.

FXUS64 KBRO 281746 AAB AFDBRO

Area Forecast Discussion...UPDATED National Weather Service Brownsville TX 1146 AM CST Tue Nov 28 2023

New AVIATION

SHORT TERM
(Today through Wednesday)
Issued at 338 AM CST Tue Nov 28 2023

Surface high pressure over northern Texas will continue to support weak northerly winds and cool temperatures today. Meanwhile, southwesterly mid-level flow will will continue to transport moisture in a weak overrunning pattern, providing overcast skies and potentially some brief periods of light rain or drizzle.

By tonight weak upper-level ridging will begin to build overhead and the surface high will move further east, allowing for a easterly to southeasterly wind shift Wednesday. This return flow from the Gulf will bring slightly warmer temperatures and increased surface moisture. Overcast skies will continue Wednesday, with the additional moisture increasing rain chances Wednesday afternoon.

LONG TERM
(Wednesday night through Monday)
Issued at 338 AM CST Tue Nov 28 2023

A mid-level short-wave over the Southern California/Baja Wednesday evening will swing eastward into New Mexico and West Texas on Thursday. At the surface, a storm system will develop across the southern High Plains Wednesday night. The pressure falls across the Plains will support a tighter pressure gradient and thus stronger southeast to south winds Thursday and Thursday night. Along the lower Texas coast, a warm front will surge north on Thursday. A few showers and thunderstorms will be possible Wednesday night into Thursday morning in advance of the warm front.

The 500mb short wave trough will sweep across North Texas and Oklahoma late Thursday, with Plains high pressure subsequently dropping south into Central Texas. A cold front is expected to move into Deep South Texas before stalling off the coast on Friday. Drier air should filter into the region in the wake of the frontal boundary. However, ample moisture combined with lift from the lingering front will support isolated to scattered showers and Thunderstorms across the coast waters Friday through Monday.

Another, deeper Southwest United States trough will move east on Saturday, with a large ridge behind it. The surface air mass will surge southeast from the Pacific Northwest and will definitely push a better defined cold front in the Deep South Texas late Sunday into Monday morning.

AVIATION
(18Z TAFS)
Issued at 1135 AM CST Tue Nov 28 2023

Overcast with VFR ceilings at the TAF sites. There is plenty of moisture evident on satellite with a thick inversion in the lower 8 KFt. Clouds will not be going anywhere soon. North winds will hold up through tonight with mostly low VFR ceilings. Winds will veer to southeast on Wednesday with a coastal trough present along the lower Texas coast. Once winds go east to southeast ceilings will lower more solidly to MVFR.

MARINE
Issued at 338 AM CST Tue Nov 28 2023

Now through Wednesday...High pressure building over the northern Gulf today will support weakening pressure gradients and a return of favorable marine conditions through Wednesday. As the high pressure builds over the Gulf, winds will shift easterly and then southeasterly by Wednesday afternoon. Overcast skies will continue through the short term period, and with some additional light rain possible Wednesday afternoon as the southeasterly flow brings a slight increase in low- level moisture.

Wednesday night through Sunday...Moderate to fresh southeast to south winds and building seas will develop from Wednesday night through Thursday night. Moderate winds will shift to north and northeast Friday through Saturday night as a cold front moves south into the waters. Small craft should exercise caution to low end small craft advisory conditions will be possible Wednesday night through Friday with slightly better conditions Friday night into Sunday.

PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 58 72 68 81 / 0 20 20 0 HARLINGEN 54 71 64 82 / 0 20 20 0 MCALLEN 53 67 62 83 / 0 10 10 0 RIO GRANDE CITY 52 63 59 81 / 0 20 10 0 SOUTH PADRE ISLAND 64 71 70 76 / 10 20 30 10 BAYVIEW/PORT ISABEL 58 72 67 80 / 0 20 20 0

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

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Port Isabel
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Tue -- 06:56 AM CST     Sunrise
Tue -- 08:17 AM CST     Moonset
Tue -- 09:26 AM CST     -0.38 feet Low Tide
Tue -- 05:36 PM CST     Sunset
Tue -- 06:43 PM CST     Moonrise
Tue -- 07:49 PM CST     1.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Port Isabel, Texas, Tide feet

Matamoros
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Tue -- 06:57 AM CST     Sunrise
Tue -- 08:18 AM CST     Moonset
Tue -- 09:13 AM CST     -0.55 feet Low Tide
Tue -- 05:38 PM CST     Sunset
Tue -- 06:45 PM CST     Moonrise
Tue -- 07:16 PM CST     1.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Matamoros, Tamaulipas, Mexico, Tide feet

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