Marine Weather Net

High Island to Freeport, TX Marine Forecast


REST OF TODAY

S
WINDS
5 - 10
KNOTS

TONIGHT

W
WINDS
5 - 10
KNOTS

FRIDAY

NE
WINDS
20 - 25
KNOTS

FRIDAY NIGHT

E
WINDS
15 - 20
KNOTS

The Marine Weather Forecast In Detail:
GMZ355 Forecast Issued: 330 PM CDT Thu Apr 09 2020

SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY AFTERNOON ...SMALL CRAFT SHOULD EXERCISE CAUTION TONIGHT...
Rest Of Today...South Winds 5 To 10 Knots. Seas 2 Feet.
Tonight...West Winds 5 To 10 Knots Becoming Northeast 15 To 20 Knots After Midnight. Seas 2 To 4 Feet. A Chance Of Thunderstorms Until Early Morning. A Chance Of Showers. Isolated Thunderstorms Late.
Friday...Northeast Winds 20 To 25 Knots Becoming 15 To 25 Knots In The Afternoon. Seas 4 To 6 Feet With Occasional Seas Up To 7 Feet. A Slight Chance Of Showers And Isolated Thunderstorms In The Morning.
Friday Night...East Winds 15 To 20 Knots. Seas 4 To 6 Feet With Occasional Seas Up To 7 Feet.
Saturday...Southeast Winds Around 15 Knots. Seas 3 To 5 Feet. A Slight Chance Of Showers And Thunderstorms In The Morning, Then A Chance Of Showers And Thunderstorms In The Afternoon.
Saturday Night...South Winds Around 15 Knots. Seas 3 To 5 Feet. A Slight Chance Of Showers And Thunderstorms In The Evening, Then A Chance Of Showers And Thunderstorms After Midnight.
Sunday...Southwest Winds 15 To 20 Knots Becoming West In The Afternoon. Seas 4 To 6 Feet With Occasional Seas Up To 7 Feet. A Chance Of Showers And Thunderstorms In The Morning, Then A Slight Chance Of Showers And Thunderstorms In The Afternoon.
Sunday Night...West Winds 10 To 15 Knots Becoming Northwest 15 To 20 Knots After Midnight. Seas 3 To 5 Feet.
Monday...North Winds 15 To 20 Knots. Seas 5 To 7 Feet With Occasional Seas Up To 8 Feet.
Monday Night...Northeast Winds 15 To 20 Knots. Seas 4 To 6 Feet With Occasional Seas Up To 7 Feet.
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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 CDT Thu Apr 9 2020

A cold front will enter the Gulf waters shortly before midnight bringing a chance of showers and thunderstorms. Some thunderstorms may bring hail and gusty winds. Moderate to strong northeasterly flow begins tonight after the front approaching caution flag criteria then into advisory criteria Friday morning. Winds decrease Friday evening but four to six foot seas will continue through the night. Seas decrease Saturday with the flow becoming southeasterly, but a second cold front moves through Sunday morning ushering in offshore flow. Another cold front moves through early Monday continuing this offshore flow.
Area Forecast Discussion
National Weather Service Houston/Galveston TX
340pm CDT Thu April 9 2020

.SHORT TERM [Rest of Today through Friday]... Concerns: Scattered to numerous showers and thunderstorms, with the potential of severe thunderstorms. Main hazards with these strong storms will be hail, strong damaging winds, lightning and heavy rainfall. Potential for tornadic activity is very low (2 percent), but cannot be discarded completely. A Severe Thunderstorm Watch has been issued for all counties, except Matagorda, Galveston, Brazoria and Chambers counties, and is in effect through 10pm CDT tonight.

Strong storms have been moving southeastward across central TX these past few hours and have been gradually intensifying. Surface observations have observed strong winds and intense lightning with these thunderstorms. This activity is expected to increase in coverage and intensity as a cold front moves into the southern TX and taps into the unstable air mass in place. The front, along with the strong showers and thunderstorms, is currently moving into the northernmost counties and is expected to reach the central counties by around 6 to 8pm CDT and the coastal counties around 9 to 11pm CDT. The front should slow down slightly as it progresses south into the central areas of the CWA, thus, areas of moderate to heavy rainfall could be ongoing for several hours across these locations. This will increase the chance for localized urban and small stream flooding. Storm Prediction Center Day 1 Outlook continues with an Enhanced Risk over much of the central and northern portions of the CWA with a Slight Risk across the rest of SE TX. WPC also has a Slight Risk of Excessive Rainfall for much of the area along and north of I-10. Conditions will improve starting from the NW tonight as a drier and more stable air mass filters behind the front and over the rest of the region overnight into early Friday morning. The cooler air mass behind the front will allow for temperatures to lower to the 60s overnight with high temperatures topping off in the low 70s Friday afternoon.

Please continue to monitor the weather and forecast updates. There is a potential for Severe Weather for SE Texas. Be prepared and have a plan ready to go. Turn Around, Dont Drown...do not drive across flooded roadways.

For more information, visit www.weather.gov/hgx

Cotto

.LONG TERM [Saturday Through Thursday]... The region will be impacted by multiple frontal passages this weekend. On Saturday, the GFS has a boundary moving northward through the region bringing showers and thunderstorms. However, the EC and Canadian are much weaker with the boundary thus bringing less precipitation into the area during the day on Saturday. While the guidance isn't in great agreement for the boundary on Saturday, they are in pretty good agreement of a cold front moving through the region Sunday morning bringing with is showers and thunderstorms. The Storm Prediction Center does highlight a Slight Risk of severe thunderstorms developing late Saturday night into early Sunday morning as there across the area. The main threat with these storms will be strong winds and hail. Most of the precipitation moves out to the east by noon Sunday, then a reinforcing cold front quickly moves into the area Sunday night ushering in a period of cooler and drier conditions next week. The rest of the long term period will feature fairly pleasant weather with mostly clear skies and high temperatures in the low to mid 70s thanks to surface high pressure across the southern US.

Marine
A cold front will enter the Gulf waters shortly before midnight bringing a chance of showers and thunderstorms. Some thunderstorms may bring hail and gusty winds. Moderate to strong northeasterly flow begins tonight after the front approaching caution flag criteria then into advisory criteria Friday morning. Winds decrease Friday evening but four to six foot seas will continue through the night. There is a Seas decrease Saturday with the flow becoming southeasterly, but a second cold front moves through Sunday morning ushering in offshore flow. Another cold front moves through late Sunday into early Monday continuing this offshore flow. High astronomical tides combined with the strong onshore flow will result in the threat of some minor beach flooding Friday night into Saturday afternoon.

NOAA Houston/Galveston TX Office: Watches - Warnings - Advisories
TX...NONE. GM...Small Craft Advisory from 7am to 3pm CDT Friday 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...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.

SMALL CRAFT SHOULD EXERCISE CAUTION from late tonight through Friday morning for the following zones: Coastal waters from High Island to Freeport TX out 20 NM...Waters from High Island to Freeport TX from 20 to 60 NM.

SMALL CRAFT SHOULD EXERCISE CAUTION from late tonight through Friday afternoon for the following zones: Galveston Bay.