Marine Weather Net

Galveston Bay Marine Forecast


TONIGHT

S
WINDS
5 KNOTS

TUESDAY

W
WINDS
5 KNOTS

TUESDAY NIGHT

SE
WINDS
5 - 10
KNOTS

WEDNESDAY

SE
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
GMZ335 Forecast Issued: 330 PM CST Mon Nov 18 2019

Tonight...South Winds Around 5 Knots Becoming West After Midnight. Bay Waters Smooth.
Tuesday...West Winds Around 5 Knots Becoming Southeast In The Afternoon. Bay Waters Smooth.
Tuesday Night...Southeast Winds 5 To 10 Knots. Bay Waters Smooth.
Wednesday...Southeast Winds 10 To 15 Knots. Bay Waters Slightly Choppy.
Wednesday Night...South Winds 10 To 15 Knots. Bay Waters Slightly Choppy. Patchy Fog After Midnight. A Slight Chance Of Showers And Thunderstorms Late.
Thursday...Southeast Winds 10 To 15 Knots. Bay Waters Slightly Choppy. Patchy Fog Early In The Morning. A Slight Chance Of Showers And Thunderstorms.
Thursday Night...South Winds 10 To 15 Knots. Bay Waters Slightly Choppy. A Slight Chance Of Showers And Thunderstorms Until Early Morning. A Chance Of Showers And Thunderstorms Late. Patchy Fog In The Late Evening And Overnight.
Friday...South Winds 10 To 15 Knots Becoming Northwest In The Afternoon. Bay Waters Slightly Choppy. Patchy Fog Early In The Morning. A Chance Of Thunderstorms Until Late Afternoon. A Chance Of Showers. Isolated Thunderstorms Late In The Afternoon.
Friday Night...North Winds 10 To 15 Knots. Bay Waters Slightly Choppy. Isolated Thunderstorms In The Evening. A Chance Of Showers.
Saturday...North Winds 10 To 15 Knots. Bay Waters Slightly Choppy. A Slight Chance Of Showers.
Saturday Night...North Winds 5 To 10 Knots. Bay Waters Smooth.
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Synopsis for High Island to the Matagorda Ship Channel out 60 nautical miles including Galveston and Matagorda Bays - GMZ300
330 PM CST Mon Nov 18 2019

Light northerly winds will prevail today. Onshore winds return Tuesday. Winds will strengthen Wednesday as the pressure gradient tightens in response to the next storm system developing and moving into the Central Plains. Caution or Advisory flags may be needed mid week.
Area Forecast Discussion
National Weather Service Houston/Galveston TX
455pm CST Monday Nov 18 2019

Short Term - Through Tuesday
High pressure ridge in place will continue to result in tranquil weather conditions through the rest of the short term period. Expect mostly sunny skies along with light and variable wind flow through the rest of the afternoon. As of 2pm CST, temperatures mostly ranged in the low 70s. For tonight, low temperatures in the upper 40s to mid 50s are expected. As temperatures cool overnight and reach near dewpoint, clear skies and light winds will help set up the stage for patchy fog development, initially across the southern regions of SE Texas, expanding further inland as the night progresses. Fog is expected to dissipate shortly after sunrise. Another pleasant and sunny day is expected Tuesday with winds becoming southerly throughout the day. 24

.LONG TERM [Tuesday Night Through Monday]... As high pressure moves off to the east and pressures begin to fall to the Lee of the Rockies Tuesday night and Wednesday, an onshore flow returns to the area and strengthens. Low rain chances are back in the forecast beginning Wednesday night, but the numbers begin rising (especially up north) beginning on Thursday as higher moisture levels and better lift enter the area. Models have begun to come into a little better agreement on bringing a cold front and our best rain chances into and through our area during the day on Friday. If this holds, the weekend is currently looking to set up to be dry and cool.

Warming temperatures (both lows and highs) can be expected until the cold front moves through on Friday. Wednesday's and Thursday's highs will be in the 70s (could even see an 80ish reading or two) followed by a cooldown after the frontal passage to close out the week and on through the weekend. Ahead of the front, the warmer air temperatures moving across the cooler water temperatures could lead to possible late night through early morning sea fog development (mainly in/around the Bays).

Highs on both Saturday and Sunday will probably struggle to get any warmer than the 60s. Look for lows over the weekend to come back down into mainly the 40s inland and 50s coast. 42

Marine
Light offshore winds to prevail today, with onshore flow returning Tuesday. Winds will increase Tuesday night through Wednesday as the pressure gradient tightens, and could result in SCEC conditions (Small Craft Should Exercise Caution) across the Gulf waters Wednesday afternoon through Thursday morning. Wind driven seas of 5 to 7 feet can be expected through at least early Friday. The next cold front is forecast to move across the local waters sometime between Friday night and Saturday morning. However...there are still a lot of inconsistencies with the models with respect to timing with this front. So stay tuned for any possible changes. Tranquil marine conditions expected throughout the upcoming weekend. 24

NOAA Houston/Galveston TX Office: Watches - Warnings - Advisories
TX...None. GM...None.