Marine Weather Net

Freeport to Matagorda Ship Channel, TX Marine Forecast


TODAY

N
WINDS
15 - 25
KNOTS

TONIGHT

NE
WINDS
10 - 15
KNOTS

WEDNESDAY

NE
WINDS
10
KNOTS

WEDNESDAY NIGHT

SE
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
GMZ350 Forecast Issued: 246 AM CST Tue Mar 02 2021

SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY
Today...North Winds 15 To 25 Knots Becoming 15 To 20 Knots In The Afternoon. Seas 3 To 5 Feet With Occasional Seas To 7 Feet In The Morning.
Tonight...Northeast Winds 10 To 15 Knots. Seas 2 To 4 Feet.
Wednesday...Northeast Winds Around 10 Knots Becoming East In The Afternoon. Seas 2 To 3 Feet.
Wednesday Night...Southeast Winds 5 To 10 Knots Becoming East After Midnight. Seas 1 To 2 Feet.
Thursday...East Winds 5 To 10 Knots. Seas 1 To 2 Feet.
Thursday Night...Southeast Winds 10 To 15 Knots Decreasing To 5 To 10 Knots After Midnight. Seas 1 To 2 Feet. A Slight Chance Of Showers Late.
Friday...Southeast Winds 5 To 10 Knots Becoming South In The Afternoon. Seas 1 To 2 Feet. A Slight Chance Of Showers.
Friday Night...North Winds 10 To 15 Knots Increasing To 15 To 20 Knots After Midnight. Seas 2 To 4 Feet. A Slight Chance Of Showers In The Evening.
Saturday...Northeast Winds 15 To 20 Knots Decreasing To 10 To 15 Knots In The Afternoon. Seas 2 To 4 Feet.
Saturday Night...Northeast Winds 10 To 15 Knots. Seas 2 To 4 Feet.
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Synopsis for High Island to the Matagorda Ship Channel out 60 nautical miles including Galveston and Matagorda Bays - GMZ300
246 AM CST Tue Mar 2 2021

Gusty offshore winds and elevated seas will continue early this morning, gradually diminishing this afternoon. Winds will veer more northeasterly during this time, and begin to be more onshore late Wednesday as surface high pressure moves off to the east. The next front is forecast to move into the area late Friday. Stay tuned for the latest on elevated winds and seas associated with this front late in the week.
Area Forecast Discussion
National Weather Service Houston/Galveston TX
524am CST Tuesday Mar 2 2021

With rain on its way out, we are looking at a relatively quiet weather week ahead...but it won't be completely quiet, either. As cooler, drier air works in on northerly winds, we can expect a brief bit of cooler than typical conditions until onshore winds return late Wednesday/Thursday morning.

We'll become more seasonable for the back half of the week, with a brief cool bump Saturday after a weak front passes Friday. This front does not look terribly impactful, but potential for rain will be up east of I-45 at least, while the western bulk of the area may not see much in the way of rain at all. This sets us up for a good warmup into next week with fair weather.

.SHORT TERM [Through Wednesday Night]... Showers are making their way out of the area, but radar still shows several more coherent echoes over the Gulf waters and Chambers County, and also some drizzle/sprinkle signatures in their wake. We'll see these very light showers/drizzle/sprinkles/all around crummy stuff hang with us into the morning hours, and slowly wind down as the 850 low moves off and a dry slot moves in from the west.

As high pressure comes to prevail over the region and the upper low gives way to a ridge building over Texas, we'll see dry conditions take over and clouds will scatter out. Additionally, the weaker pressure gradient will make for northerly winds that are not quite as gusty and diminishing deeper into the day/tonight. With clearing overhead and winds becoming fairly light, we will be better set up for cooling tonight into Wednesday morning. Because of this, have trended temperatures down to the lower end of the guidance envelope.

Despite the chilly start, (nearly) full sun should set us up to warm up more effectively on Wednesday. Early March sun angle maybe isn't the strongest, but instead of the 50s to around 60 degrees today, the entire area should easily clear 60 degrees and rise towards the middle 60s on Wednesday. Finally, with surface high pressure drifting off to the east, winds will gradually veer and acquire an onshore component, with dewpoints slowly rising in response. This should help keep Wednesday night's lows stay a bit higher, and we may see some increased cloudiness, at least at the coast.

.LONG TERM [Thursday Through Tuesday]... High temperatures on Thursday climb a few degrees to near 70 for most of the region as the surface high pressure slides to the east ushering in a southerly flow and an upper level ridge brings building heights. Meanwhile, a low pressure system will be sliding across the Four Corners region. The associated surface low develops over North Texas/Oklahoma Thursday night and will track to the southeast through Friday. warm air advection out ahead of the disturbance increases temperatures even further in our area with overnight lows Thursday night near 50 (about 10 degrees warmer than the previous night), and high temperatures on Friday in the low 70s. The associated cold front will slide across the area Friday afternoon/evening. Scattered showers may Probability of Precipitation up near the coast Friday morning, but the highest chance of precipitation will be east of I-45 Friday evening with the FROPA. The system does not really have a great moisture source for precipitation until it reaches the northern Gulf Coast, so the western half of our region may end up dry through the rest of the week. The frontal passage will usher in cooler temperatures over the weekend for the entire region. High temperatures Saturday and Sunday will be in the mid to upper 60s with overnight lows with overnight lows in the upper 40s to low 50s. At least partly cloudy skies may linger through the weekend despite the surface high pressure developing due to a short wave embedded in the upper level ridge moving across SE Texas on Sunday. The cooler temperatures over the weekend will not continue into the new work week as southeasterly flow returns. High temperatures will be back into the mid to upper 70s by Tuesday (and may continue to climb through the rest of the week).

Marine
The small craft advisory continues early this morning for all nearshore waters with gusty offshore winds and elevated seas continuing. As high pressure settles in, winds and seas will gradually diminish through the day. Winds will veer more northeasterly during this time, and begin to be more onshore late Wednesday as high pressure moves off to the east.

The next front is forecast to move into the area late Friday. Winds and seas will be expected to increase - both for onshore winds as the front approaches, and with offshore winds in the wake of the front. Caution flags and/or advisories may be needed, but there is not enough confidence in the specifics to say anything with much specificity at this range.

NOAA Houston/Galveston TX Office: Watches - Warnings - Advisories
TX...None. GM...Small Craft Advisory until 9am CST this morning for the following zones: Galveston Bay...Matagorda Bay.

Small Craft Advisory until noon CST today for the following zones: Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM...Coastal waters from High Island to Freeport TX out 20 NM.

Small Craft Advisory until 3pm CST this afternoon for the following zones: Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM...Waters from High Island to Freeport TX from 20 to 60 NM.