Marine Weather Net

Baffin Bay to Port Mansfield, TX Marine Forecast


TONIGHT

SE
WINDS
10 - 15
KNOTS

FRIDAY

SE
WINDS
5 - 10
KNOTS

FRIDAY NIGHT

SE
WINDS
10 - 15
KNOTS

SATURDAY

SE
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
GMZ155 Forecast Issued: 338 PM CDT Thu Aug 06 2020

Tonight...Southeast Winds 10 To 15 Knots. Seas 2 To 4 Feet. Slight Chance Of Showers After Midnight.
Friday...Southeast Winds 5 To 10 Knots Increasing To 10 To 15 Knots In The Afternoon. Seas 2 To 4 Feet. Slight Chance Of Showers.
Friday Night...Southeast Winds 10 To 15 Knots. Seas 2 To 4 Feet. Slight Chance Of Showers.
Saturday...Southeast Winds 5 To 10 Knots Increasing To 10 To 15 Knots In The Afternoon. Seas 2 To 4 Feet. Chance Of Showers And Thunderstorms.
Saturday Night...Southeast Winds 10 To 15 Knots. Seas 2 To 4 Feet. Slight Chance Of Showers After Midnight.
Sunday...Southeast Winds 10 To 15 Knots. Seas 2 To 4 Feet.
Sunday Night...Southeast Winds 10 To 15 Knots. Seas 2 To 4 Feet. Slight Chance Of Showers.
Monday...Southeast Winds 5 To 10 Knots Increasing To 10 To 15 Knots In The Afternoon. Seas 2 To 4 Feet.
Monday Night...Southeast Winds 10 To 15 Knots. Seas 2 To 4 Feet. Slight Chance Of Showers.
Tuesday...Southeast Winds 5 To 10 Knots Increasing To 10 To 15 Knots In The Afternoon. Seas 2 To 3 Feet. Slight Chance Of Showers And Thunderstorms.
Tuesday Night...Southeast Winds 10 To 15 Knots. Seas 2 To 4 Feet. Slight Chance Of Showers.
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Synopsis for Baffin Bay to Rio Grande out 60 nm: GMZ100
338 PM CDT Thu Aug 6 2020

High pressure will stretch across the Gulf of Mexico through the period, providing light to moderate onshore winds and low seas through the weekend into early next week. A weak upper level disturbance will bring isolated to scattered showers and thunderstorms on Saturday.
Area Forecast Discussion
National Weather Service Brownsville TX
236pm CDT Thu August 6 2020

Short Term - Tonight Through Friday Night
Isolated seabreeze shower activity is expected to dissipate by early this evening across the CWA. These showers have been handled quite well by the ECMWF (European Centre for Medium-Range Weather Forecasts) and much of the CAM guidance over the past few days. As boundary layer moisture increases slightly more from their current values through Friday night, will expand and raise the Probability of Precipitation slightly through the period. Most of the convection is expected to remain shallow but cannot rule out one or two cells with thunder, especially during the afternoon on Friday. However, most areas will remain dry with seasonable temperatures through the forecast period. Kept the temperature forecast as persistence as this has worked the best for the past few days.

Long Term - Saturday through Thursday
Latest 12Z model trends continue to show the 500mb ridge retrograding west through the long-term with a gradual increase and deepening of atmospheric moisture. No big surge in tropical moisture just some typical August increase in the general moisture plume to give rise to daily sea breeze convection. Some activity may be locally enhanced with the sea breeze edging farther to the west Saturday and again next Wednesday and Thursday as two weak tropical waves pass west across the SW Gulf/Bay of Campeche. Model temperature guidance remains in good consistency with no extremes noted with moderate ridging aloft keeping temperatures within a degree or two of August normals.

Marine
Besides isolated showers and thunderstorms each day/night a light to occasional moderate onshore flow and slight seas are expected to persist through the weekend and early next week. Weak surface ridging residing over the Eastern Gulf of Mexico will remain in place with weak low pressure over Texas.

NOAA Brownsville TX Office: Watches - Warnings - Advisories
TX...None. GM...None.