Marine Weather Net

Freeport to Matagorda Ship Channel, TX Marine Forecast


5 - 10


5 - 10


5 - 10


10 - 15

The Marine Weather Forecast In Detail:
GMZ350 Forecast Issued: 648 AM CDT Wed Apr 08 2020

Rest Of Today...South Winds 5 To 10 Knots. Seas 2 To 3 Feet. Patchy Fog Late. Isolated Showers And Thunderstorms In The Afternoon.
Tonight...South Winds 5 To 10 Knots. Seas 1 To 2 Feet. Isolated Showers And Thunderstorms Early In The Evening. Patchy Fog In The Late Evening And Overnight.
Thursday...Southwest Winds 5 To 10 Knots Becoming South In The Afternoon. Seas 1 To 2 Feet. Scattered Showers And Isolated Thunderstorms In The Afternoon.
Thursday Night...Northeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. Scattered Showers And Isolated Thunderstorms.
Friday...East Winds 15 To 20 Knots. Seas 3 To 5 Feet. Isolated Showers In The Morning. Isolated Thunderstorms. Scattered Showers In The Afternoon.
Friday Night...East Winds 15 To 20 Knots. Seas 4 To 6 Feet With Occasional Seas Up To 7 Feet. Isolated Showers And Thunderstorms After Midnight.
Saturday...Southeast Winds Around 15 Knots Becoming South In The Afternoon. Seas 3 To 4 Feet. Scattered Showers And Isolated Thunderstorms.
Saturday Night...South Winds Around 10 Knots Becoming Southwest After Midnight. Seas 3 To 4 Feet. Scattered Showers And Isolated Thunderstorms.
Sunday...West Winds 10 To 15 Knots. Seas 2 To 4 Feet. Isolated Showers And Thunderstorms In The Morning.
Sunday Night...West Winds 5 To 10 Knots. Seas 2 To 3 Feet.
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Synopsis for High Island to the Matagorda Ship Channel out 60 nautical miles including Galveston and Matagorda Bays - GMZ300
648 AM CDT Wed Apr 8 2020

Patchy fog possible again this morning in the bays for a few hours. Otherwise southerly flow will continue with increasing rain chances this afternoon and again on Thursday with a cold front. Strong thunderstorms may be possible late Thursday. Expect increasing offshore flow Thursday night into Friday in the wake of the front. Winds will then turn easterly and strengthen again. Yet another cold front will push off the coast early Monday.
Area Forecast Discussion
National Weather Service Houston/Galveston TX
522am CDT Wednesday April 8 2020

Short Term - Today through Tonight
Not quite as foggy this morning but the abundant low clouds should burn off by mid/late morning. Another warm/humid day is on tap for much of SE TX and there is still a slight chance for showers/isol- ated thunderstorms across the northern third of the FA this after- noon. An upper level disturbance moving up from the SW (along with daytime heating) should be the trigger (if it manages to break the cap over the region). Otherwise, not sure we'll get any high temp- erature records this afternoon, but it may get close at some sites. Highs today will be in the upper 80s/around 90 inland....lower 80s along the coast. Lows tonight to range from the upper 60s to lower 70s with fairly quiet conditions. 41

.LONG TERM [Thursday through Tuesday]... Per SPC's Day 2 Outlook, most of SE TX has been placed in a Slight Risk category for severe weather for Thur/Thur night with the main threats being large hail and strong damaging winds. We'll be look- ing for increasing convection along an approaching cold front from the north during the afternoon, with the activity likely fueled by a series of strong upper level shortwaves moving in from the west. Progged instabilities/shear look quite favorable as the storms de- velop and slowly move across the area.

Depending on any lingering mesoscale influences in the wake of the storms, we should have a bit of a break from the elevated POPs for Fri. But, there are still indications of additional embedded short waves moving across the region with some of the global models. The overrunning-type scenario will help to keep things cool/cloudy/wet Fri. But wait, there's more. Rain chances set to increase again by Sat with the approach and eventual passage of the main upper trough. low pressure system from the west. While the long range models are narrowing the timing of events, confidence remains low enough that we'll be keeping with ongoing forecast of likely POPs starting Sat on into early Sunday morning. Rains will be ending and skies clearing through Sunday afternoon as the upper trough.low moves off to the E/NE. In its wake, a strong cold front is expected to move down from the Plains as the flow wraps around the exiting system. A cooler/drier pattern is set to prevail for much of next week. 41

Some patchy fog will be developing the next few hours in the bays and nearshore waters. A marine dense fog advisory looking more likely for the southern areas of Galveston bay and the nearshore waters east of Freeport. Very moist southerly flow continues and will do so through Thursday morning and may see a repeat of the fog developing again Thursday morning. Cold front should move off the coast Thursday late afternoon or evening. Thunderstorms and showers will move into the coastal areas in this same time frame. The offshore flow in the wake of the front strengthens as cooler air arrives a few hours after the frontal passage and will likely get into SCA (Small Craft Advisory) conditions. High pressure slides east and turns winds around to the northeast and east Friday morning and then strengthens as a deeper trough approaches. Tide levels are currently running around 1 foot above normal with light southerly flow so will probably have at least moderate rip currents today. Tide levels should dip in the wake of the front but only briefly. By Friday noon will probably have elevated tide levels of at least a foot and may be getting closer to 1.5-2 feet. This could lead to a period of beach flooding/strong rip currents Friday late morning through Saturday afternoon. Another mild cold front swings through with westerly flow Sunday morning with the push of colder air and stronger northwest winds Monday morning. 45

The overnight hours of late have been well above normal the last two and yesterday set some records. Galveston broke the old record dating back to 1929 and now stands at 74 degrees for a record high minimum temperature. Hobby broke the record only falling to 73 beating the old record of 71 from 1965 and even Intercontinental got in the record by tying the 72 record from 1999.

For today the record high minimums are as follows...and a few may be in jeopardy.

CLL 73 - 1922 IAH 73 - 2011 HOU 72 - 2015 GLS 74 - 1882

NOAA Houston/Galveston TX Office: Watches - Warnings - Advisories