Marine Weather Net

Matagorda Bay Marine Forecast


10 - 15


5 - 10


20 - 25


5 - 10

The Marine Weather Forecast In Detail:
GMZ330 Forecast Issued: 928 PM CST Sun Dec 05 2021

Tonight...South Winds 10 To 15 Knots. Bay Waters Slightly Choppy. Patchy Fog Late. Scattered Showers And Isolated Thunderstorms Late.
Monday...Southwest Winds 5 To 10 Knots Becoming North 15 To 25 Knots In The Afternoon. Bay Waters Smooth Becoming Choppy In The Afternoon. Patchy Morning Fog. Showers And Thunderstorms Likely In Advance Of The Front.
Monday Night...Northeast Winds 20 To 25 Knots Decreasing To 10 To 15 Knots After Midnight. Bay Waters Choppy Becoming Slightly Choppy After Midnight. A Slight Chance Of Showers.
Tuesday...Northeast Winds 5 To 10 Knots. Bay Waters Smooth. Isolated Showers In The Morning. Isolated Showers Late In The Afternoon.
Tuesday Night...East Winds 5 To 10 Knots Becoming Northeast After Midnight. Bay Waters Smooth. Isolated Showers.
Wednesday...North Winds Around 5 Knots Becoming East In The Afternoon. Bay Waters Smooth.
Wednesday Night...Southeast Winds 5 To 10 Knots Becoming South After Midnight. Bay Waters Smooth.
Thursday...South Winds 10 To 15 Knots. Bay Waters Slightly Choppy.
Thursday Night...South Winds 10 To 15 Knots. Bay Waters Slightly Choppy.
Friday...South Winds 15 To 20 Knots. Bay Waters Choppy.
Friday Night...South Winds 10 To 15 Knots. Bay Waters Slightly Choppy. Isolated Showers And Thunderstorms Late.
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Synopsis for High Island to the Matagorda Ship Channel out 60 nautical miles including Galveston and Matagorda Bays - GMZ300
928 PM CST Sun Dec 5 2021

Increasing southerly flow tonight with building seas. Some fog will be possible on the bays going into the late night and early morning hours. A cold front will be pushing off the coast during the early afternoon hours Monday accompanied by a band of showers and thunderstorms. Moderate to strong northerly winds in its wake will gradually subside Tuesday. Onshore winds will resume and increase Thursday and Friday. The next front is penciled in for Saturday.
Area Forecast Discussion
National Weather Service Houston/Galveston TX
609pm CST Sunday Dec 5 2021

/ISSUED 405pm CST Sunday Dec 5 2021/

SHORT TERM [Tonight Through Monday Night]... Clouds have been more persistent today and this is a sign of the abundance of moisture present over the area and coming in off the Gulf. PW 1.2-1.4" with dewpoint 66 to 69 across the area...near 70 offshore. Bay water temperatures 67-71 and with the increased flow off the Gulf has been sufficient to hamper the advection fog development near the bays this afternoon...but by late evening that should change and some fog is probable across the southern areas though don't expect widespread dense fog - though some may be possible near the bays. Rain chances have been slim today but that too will be changing as the speed max over N TX shifts east and southeast overnight/early Monday with the approach of the upper low over Northern Mexico. Rain chances should increase quickly with first scattered showers that may even become fairly widespread after midnight. The associated cold front pushes into the College Station area by around 8 am and then into Metro around noon to 1 pm and off the coast late Monday afternoon. Profiles indicate some low level capping but steep lapse rates aloft and dynamics look pretty decent. Have nudged up rain chances and transitioned to scattered or greater coverage with showers and thunderstorms Monday. In addition some strong gusty winds will be possible and wouldn't even rule out some puny hail. Shear is rather lacking with a more low level southwesterly/linear flow. Rainfall coverage should high across the area and some 1-2 inch amounts are possible...especially to the east and southeast of Conroe including the Metro area. Colder air behind the front will bring gusty northerly winds and much needed cool down. Rain chances will linger into the evening over the coastal areas then shifts out into the Gulf. 45

Long Term - Tuesday Through Sunday
We'll still be looking for the return of the cold front as a warm front on Tues. And as this line slowly makes its way north across SE TX, the approach/passage of a fairly potent shortwave from the W/SW could be sufficient for the development of isolated to wide- ly scattered activity through the morning/afternoon on Tues. Best chances should be over the southern/eastern CWA, where the deeper moisture is expected to linger. With clouds sticking around, tem- peratures increases probably won't be the best indication of this warm front when compared to dewpoints or RH levels. As such, will keep highs for Tues in the 60s.

Current runs not indicating much in terms of POPs for Weds/Thurs/ Fri but not totally ruling any out at this time. Even with mostly zonal mid/upper winds remaining in place through this period (and thereby the possibility of an embedded disturbance or two), still not confident enough to re-introduce the mention of precipitation for this time frame. These low rain chance should lower even more by Fri as the mid/upper level ridge tries to build over the South- ern Plains in response to the deepening longwave trough out west of the Baja. As this trough moves east by next weekend, we could see a strong cold front dragged along with it...moving into/through the CWA by next Sat. For temperatures, will keep with the much warmer than normal trends for the Weds-Fri period, with the highs maybe/ perhaps in the lower (to mid) 80s. The colder/drier air mass that is forecast to move into the area should bring more seasonal temps by next Sun. 41

Increasing southerly winds tonight have hoisted a SCEC for starting at 8 pm and continuing into the mid morning hours. The threat for fog remains over the bays/mainly north bays after 10 pm through early morning. Cold front pushes off the coast and brings a band of showers and thunderstorms some with strong gusty winds in the afternoon/early evening. The cold front pushes through the coastal waters and stalls Tuesday then should come back as a warm front (without quite as much low level moisture) and could bring a possibility of sea fog Wednesday. Southerly flow ramps up dramatically late week as the next deeper upper trough comes through the western U.S. 45

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