Sunrise 6:41 AM   Sunset 8:12 PM Moonrise 2:15 PM   Moonset 2:18 AM

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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- 927 Pm Cdt Fri May 17 2024
Rest of tonight - Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots. A moderate chop on the bay, diminishing to light chop. A slight chance of showers and Thunderstorms. Saturday - Northeast winds 5 to 10 knots, becoming around 10 knots late in the afternoon. Light chop on the bay. Saturday night - East winds around 10 knots, becoming southeast after midnight. Light chop on the bay. Sunday - East winds 5 to 10 knots. Light chop on the bay. Sunday night - East winds 10 to 15 knots, becoming southeast after midnight. Light chop on the bay. Monday - Southeast winds 10 to 15 knots. A moderate chop on the bay. Monday night - Southeast winds around 15 knots, becoming south early in the morning. A moderate chop on the bay. Tuesday - Southeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Choppy on the bay. Tuesday night - Southeast winds 15 to 20 knots. Choppy on the bay. Wednesday - Southeast winds 15 to 20 knots. Choppy on the bay. Wednesday night - Southeast winds 15 to 20 knots. Choppy on the bay.
winds and waves higher in and near Thunderstorms.

GMZ100 927 Pm Cdt Fri May 17 2024
Synopsis - Light to moderate easterly winds will prevail for much of the period. There is a slight chance for showers and Thunderstorms later this afternoon/evening, as a stationary boundary meanders over the area into Saturday.

FXUS64 KBRO 172311 AAB AFDBRO

Area Forecast Discussion...UPDATED National Weather Service Brownsville TX 611 PM CDT Fri May 17 2024

New AVIATION

SHORT TERM
(Tonight through Saturday night)
Issued at 250 PM CDT Fri May 17 2024

Showers and thunderstorms came through Deep South Texas and the Rio Grande Valley this morning. While there was a good bit of rain that fell in the area along with some reports of hail as well. With the atmosphere already worked over this morning chances of showers and thunderstorms during the evening and tonight are very low.

Conditions for tonight are expected to be mostly cloudy and warm with most lows in the 70s. Hazy and humid conditions are expected to persist through tonight and the rest of the short term forecast period. Similar conditions are expected for Saturday night as well.

As for tomorrow, high temperatures are expected to be in the 90s, with lower 90s along the coast and increasing further inland to the upper 90s with most of Zapata in the triple digits. Models currently do not show any regions close to Heat Advisory criteria at this current point. With a mid-level ridge moving in aloft, Deep South Texas and the Rio Grande Valley will be entering another period of hot temperatures. Moderate risk of Rip Currents continue through tomorrow at the local beaches.

LONG TERM
(Sunday through next Friday)
Issued at 250 PM CDT Fri May 17 2024

A mid-level ridge over Deep South Texas and the Rio Grande Valley will continue to be the main influence for the long term period.
With the mid-level ridge in place and dry air in the middle to upper levels of the atmosphere, rain chances are expected to be very low.
While on the surface, winds are expected to remain out of the southeast for the duration of the long term forecast period, which will allow for plenty of low-level moisture flow to move into the region and thus keeping the air very humid. The combination of heat and humidity will raise concerns for Heat Advisories. While Monday does seem to be very borderline at this point with max heat indices around 110. Temperatures are expected to continue to increase through the long term forecast period, and the heat indices continue to climb as well. Tuesday through Friday currently appear to be more likely to need Heat Advisories as the heat indices over 111 are more widespread on those days. Current model projections show that the max heat index at 116 for Thursday and Friday. Thus a possible Excessive Heat Warnings and Watches might be needed. The NWS HeatRisk Tool also highlights Monday through Thursday of having major to extreme impacts from the heat. Future shifts will continue to monitor this situation. Remember to stay hydrated, limit outside activities, and wear light, loose clothing to reduce heat risk effects.

AVIATION
(00Z TAFS)
Issued at 607 PM CDT Fri May 17 2024

MVFR conditions are expected to prevail this evening, though BRO may continue to see brief periods of IFR. After midnight IFR are conditions are expected at BRO through the remainder of the night, returning to MVFR after daybreak. HRL is also expected to drop to IFR towards morning for a few hours before returning to MVFR. VFR conditions are expected all all terminal by Saturday afternoon. Winds will decrease overnight across the region which may allow for some patchy fog to develop.

MARINE
Issued at 250 PM CDT Fri May 17 2024

Tonight through Saturday Night...Light to moderate winds along with low to moderate seas will result in favorable conditions along the Lower Texas Coast through Saturday night.

Sunday through Next Friday...Light to moderate onshore flow with low to moderate seas are expected to persist through Monday morning.
Afterwards, through next Friday during the afternoons a locally enhanced pressure gradient will generate a bit stronger winds that will require Small Craft Exercise Caution during the afternoon and early evening hours.

PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 78 93 78 94 / 30 10 0 0 HARLINGEN 73 94 74 95 / 20 10 0 0 MCALLEN 75 98 77 99 / 20 0 0 0 RIO GRANDE CITY 73 98 75 99 / 10 0 0 0 SOUTH PADRE ISLAND 79 85 79 85 / 30 10 0 0 BAYVIEW/PORT ISABEL 77 89 77 90 / 30 10 0 0

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

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Port Isabel
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Fri -- 03:17 AM CDT     Moonset
Fri -- 05:45 AM CDT     0.49 feet Low Tide
Fri -- 06:41 AM CDT     Sunrise
Fri -- 12:53 PM CDT     1.05 feet High Tide
Fri -- 03:13 PM CDT     Moonrise
Fri -- 07:52 PM CDT     0.65 feet Low Tide
Fri -- 08:09 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION

Port Isabel, Texas, Tide feet

Queen Isabella Causeway (west end), Texas, Tide feet

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