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GMZ330 Matagorda Bay- 1135 Am Cst Thu Dec 7 2023
This afternoon..Southeast winds around 10 knots. Bay waters smooth to slightly choppy.
Tonight..South winds around 10 knots. Bay waters smooth to slightly choppy.
Friday..South winds 10 to 15 knots. Bay waters slightly choppy.
Friday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Saturday..Southwest winds 10 to 15 knots. Bay waters slightly choppy. A chance of Thunderstorms in the afternoon.
Saturday night..North winds 20 to 25 knots, increasing to around 30 knots after midnight. Gusts to 45 knots. Bay waters rough, becoming very rough after midnight. A chance of showers and Thunderstorms in the evening.
Sunday..North winds 20 to 25 knots with gusts up to 35 knots, diminishing to around 15 knots in the afternoon. Bay waters rough, becoming slightly choppy in the afternoon.
Sunday night..North winds 5 to 10 knots, becoming east after midnight. Bay waters smooth.
Monday..East winds 5 to 10 knots. Bay waters smooth.
Monday night..Southeast winds around 10 knots. Bay waters smooth to slightly choppy.
winds and waves higher in and near Thunderstorms.

GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1135 Am Cst Thu Dec 7 2023
Synopsis for high island to the matagorda ship channel out 60 nm including galveston and matagorda bays
strengthening southeasterly to southerly winds develop later this morning and persist through Friday resulting in gradually increasing seas. Isolated rain showers are possible Friday, but will increase in coverage and strength on Saturday as a cold front pushes through the waters. Moderate to strong northwesterly winds will develop behind the front with gusts up to gale force possible Saturday night into Sunday morning along with building seas. Abnormally low tides are possible Sunday morning in the bays due to the strong northwesterly winds. Winds and seas subside on Sunday.

FXUS64 KCRP 071733 AFDCRP

Area Forecast Discussion National Weather Service Corpus Christi TX 1133 AM CST Thu Dec 7 2023

New AVIATION

SHORT TERM
(Today through Friday)
Issued at 202 AM CST Thu Dec 7 2023

Clouds will continue to increase today as an upper level disturbance approaches the area. Guidance generally keeps any mention of showers out of the forecast but with PWATs increasing to around 1.4" through this afternoon, there is a small chance that we could see at least some light showers as the upper level disturbance crosses the area from the southwest to northeast tonight. With that in mind, there are some silent PoPs in the forecast for tonight.

As onshore flow persists, more moisture will stream into the area today leading to increased cloud cover and warmer temperatures.
Today's highs will be in the mid to upper 70s, with lows in the 60s overnight. Highs for Friday will be in the 80s.

Onshore winds will increase on Friday ahead of an approaching cold front. Small Craft Advisory conditions are possible over the offshore waters Friday, but confidence is low.

LONG TERM
(Friday night through next Wednesday)
Issued at 202 AM CST Thu Dec 7 2023

Key Messages:

- Strong cold front Saturday evening brings a medium chance for sustained winds around 30 mph over the Coastal Bend overnight

- Low chance (20-30$) of showers and thunderstorms Saturday evening along the front, then again the middle of next week

- Medium chance (30-60%) for freezing temperatures early Monday morning for low-lying drainage areas from McMullen to Refugio County

Saturday's highs will be about 10 degrees above normal, ranging from the upper 70s to mid 80s. These temperatures will get absolutely obliterated as a strong cold front pushes through Saturday evening (trended later), bringing colder and much drier air in its wake.
Northerly winds will be strong in wake with gale force conditions over the waters and near Wind Advisory criteria (sustained 30 mph)
over the Coastal Bend overnight into early Sunday morning. Included a low 20-30% chance of showers and even lower chances of thunderstorms during a 6-hr window with FROPA from 6PM Saturday to midnight. It'll be very quick with greatest chances and coverage over the waters. Highs on Sunday drop to the low to mid 60s on Sunday.

Although weak onshore flow returns Sunday night, there's going to be a delay in dewpoints and moisture recovering. Sunday night will be the coldest night across South Texas with clear skies, light winds, and dewpoints in the 20s inland causing efficient radiational cooling. Currently have mid 30s over the inland Coastal Plains and Brush Country, to the mid 40s along the coast. However, low-lying drainage areas could see freezing temperatures. In fact, NBM shows a medium chance (30-60%) of freezing minimum temperatures from McMullen to Refugio County.

Rain-free conditions continue through Tuesday with PWAT values below normal and temperatures warmer with highs on Tuesday in the low 70s and lows Tuesday night generally in the 50s. Low to medium (20-40%)
rain chances return at the end of the long term, during the middle of next week as PWAT values climb to near 1.50" in association with Pacific moisture of a mid-level low or trough traversing from the Pacific across Mexico into South Texas.

AVIATION
(18Z TAFS)
Issued at 1130 AM CST Thu Dec 7 2023

VFR conditions are expected today with MVFR/IFR conditions creeping in tonight into early tomorrow morning. Winds will be gusty this afternoon with winds decreasing tonight before increasing once again tomorrow afternoon.

MARINE
Issued at 202 AM CST Thu Dec 7 2023

Light to moderate southeasterly flow will increase to more moderate and turn to the south tonight and Friday. Moderate to strong southerly flow could develop on Friday. Moderate to strong southerly flow will weaken to weak to moderate Saturday just ahead of an approaching cold front. The strong cold front will likely push through the waters between 9 PM Saturday evening to 3 AM Sunday. Very strong northerly flow of 30-35 knots will follow in wake of the front causing gale conditions through at least early Sunday morning, then decrease to 20-25 knots Sunday afternoon. Isolated to scattered showers and thunderstorms Saturday afternoon through Saturday night. Winds then quickly diminish, become weak and shift southeasterly late Sunday night into Monday morning. Southeasterly flow slightly strengthens to weak to moderate Monday night through Tuesday then generally moderate Tuesday night into Wednesday.

PRELIMINARY POINT TEMPS/POPS
Corpus Christi 75 64 79 67 / 10 10 0 0 Victoria 73 61 79 65 / 10 10 10 0 Laredo 75 62 83 63 / 10 0 0 0 Alice 76 62 82 64 / 10 10 0 0 Rockport 72 66 75 67 / 10 10 0 0 Cotulla 75 61 83 62 / 10 0 0 0 Kingsville 76 63 82 66 / 10 10 0 0 Navy Corpus 73 68 75 70 / 10 10 0 0

CRP WATCHES/WARNINGS/ADVISORIES
TX...None.
GM...None.

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Port Lavaca
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Thu -- 01:57 AM CST     Moonrise
Thu -- 04:05 AM CST     0.69 feet High Tide
Thu -- 07:06 AM CST     Sunrise
Thu -- 11:21 AM CST     0.45 feet Low Tide
Thu -- 02:02 PM CST     Moonset
Thu -- 05:29 PM CST     Sunset
Thu -- 07:37 PM CST     0.76 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Port Lavaca, Matagorda Bay, Texas, Tide feet

Port O'Connor
Click for Map
Thu -- 01:56 AM CST     Moonrise
Thu -- 02:06 AM CST     0.59 feet High Tide
Thu -- 07:04 AM CST     Sunrise
Thu -- 09:34 AM CST     0.41 feet Low Tide
Thu -- 02:01 PM CST     Moonset
Thu -- 05:28 PM CST     Sunset
Thu -- 06:20 PM CST     0.61 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Port O'Connor, Matagorda Bay, Texas, Tide feet

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