Marine Weather Net

Freeport to Matagorda Ship Channel, TX Marine Forecast


TONIGHT

NE
WINDS
10 - 15
KNOTS

THURSDAY

NE
WINDS
10 - 15
KNOTS

THURSDAY NIGHT

E
WINDS
10 - 15
KNOTS

FRIDAY

E
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
GMZ350 Forecast Issued: 639 PM CDT Wed May 05 2021

Tonight...Northeast Winds 10 To 15 Knots. Seas 2 To 4 Feet.
Thursday...Northeast Winds 10 To 15 Knots. Seas 3 Feet.
Thursday Night...East Winds 10 To 15 Knots. Seas 2 To 3 Feet.
Friday...East Winds 10 To 15 Knots. Seas 2 To 3 Feet.
Friday Night...Southeast Winds 10 To 15 Knots. Seas 2 To 3 Feet.
Saturday...Southeast Winds 15 To 20 Knots. Seas 3 To 4 Feet.
Saturday Night...South Winds 15 To 20 Knots. Seas 4 To 5 Feet With Occasional Seas Up To 6 Feet.
Sunday...South Winds 15 To 20 Knots. Seas 4 To 6 Feet With Occasional Seas Up To 7 Feet. A Slight Chance Of Showers And Thunderstorms In The Morning.
Sunday Night...South Winds 15 To 20 Knots. Seas 4 To 5 Feet With Occasional Seas Up To 6 Feet. A Slight Chance Of Showers And Thunderstorms After Midnight.
Monday...Southeast Winds 10 To 15 Knots. Seas 3 To 5 Feet. A Slight Chance Of Showers And Thunderstorms.
Monday Night...Southeast Winds 10 To 15 Knots. Seas 3 To 4 Feet. A Slight Chance Of Showers And Thunderstorms.
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Synopsis for High Island to the Matagorda Ship Channel out 60 nautical miles including Galveston and Matagorda Bays - GMZ300
639 PM CDT Wed May 5 2021

Winds and seas will continue to diminish this evening, with conditions dropping below caution criteria in the offshore waters around midnight CDT tonight. Light E to NE winds will persist through early Friday, with seas remaining around 2 to 5 feet. On Friday, winds will shift to the SE as surface high pressure departs the Southern Plains. The resultant moderate to strong onshore winds will likely require cautions and/or advisories. As a surface cold front stalls over SE TX by the end of the weekend, wetter weather is expected into next week.
Area Forecast Discussion
National Weather Service Houston/Galveston TX
626pm CDT Wednesday May 5 2021

SHORT TERM [Through Thursday Night]... Today was an absolutely fantastic late-Spring day across Southeast Texas as high pressure provided ample sunshine, low humidity, and slightly below normal temperatures. These pleasant conditions will make a reappearance Thursday (albeit slightly warmer) as the high pressure dominates the weather. If you can, enjoy this weather while it lasts as these may be the last few days of pleasant conditions before the heat and humidity of summer arrives and overstays its welcome.

No chance of precipitation through the short term. There may be some patchy fog in Jackson and Matagorda counties by daybreak tomorrow, but the air is dry enough that it shouldn't be very dense nor widespread. Low temperatures tonight will be slightly warmer than last night with minimum temperatures getting down into the mid 50s up north and low 60s along and south of I-10. High temperatures on Thursday will be in the mid 80s for much of the region with lows Thursday night being very similar to tonight.

Long Term - Friday Through Wednesday
A period of warmer and wetter weather will begin on Friday as the dominant surface high over the Southern Plains departs to the east while zonal flow aloft gradually develops. This pattern shift will allow for the development of moderate to strong onshore winds as we head into the weekend, allowing for high temperatures to creep back towards the 90 degree mark. Perhaps the more noticeable impact of this pattern shift will be a sharp uptick in surface dewpoints, as a return to values in the vicinity of 70 degF by Saturday will make this week's brief reprieve from the springtime humidity seem a distant memory. With cloud cover on the rise as well, overnight lows will venture back into the 70s at most locations. As total PW values (Precipitable Water values) approach 1.75in by Sunday morning, a few streamer showers may be possible, particularly in and around Galveston Bay.

Heading into the beginning of next week, we enter into what looks to be a prolonged period of wet weather. A progressive surface low will drag a surface cold front across the Central and into the Southern Plains on Sunday. Global deterministic solutions continue to indicate that the advancing boundary will stall north of the area by late Sunday, with continued southerly winds providing ample moisture for shower and storm development. Have maintained chance Probability of Precipitation from Sunday into Wednesday given the continued differences in global model solutions, with the EC remaining more aggressive compared to the GFS. In general, the warm temperature trend will continue throughout the remainder of the period with most locations seeing highs in the upper 80s and lows in the upper 60s to lower 70s.

Marine Discussion
Winds and seas will continue to diminish throughout the remainder of the day, with conditions across the offshore waters expected to drop below caution criteria early this evening. Light east to northeasterly winds are expected through Friday, after which the departure of surface high pressure to the east will allow for a redevelopment of onshore winds. Wind speeds should reach advisory and/or caution criteria by Saturday, with seas building to around 4- 6 feet. Strong rip currents may also be possible along Gulf-facing beaches over the weekend, so those with plans to spend a day on the water should monitor local beach conditions. As a cold front approaches the Southern Plains by the end of the weekend and stalls to our north, periods of showers and storms will be possible well into next week.



VFR conditions will prevail through the period with light to moderate north to northeasterly winds and mostly clear skies..

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