Marine Weather Net

Cameron, LA to High Island, TX 20 - 60 NM Marine Forecast


REST OF TODAY

S
WINDS
15 - 20
KNOTS

TONIGHT

S
WINDS
15
KNOTS

WEDNESDAY

N
WINDS
20 - 25
KNOTS

WEDNESDAY NIGHT

NE
WINDS
20 - 25
KNOTS

The Marine Weather Forecast In Detail:
GMZ470 Forecast Issued: 1002 AM CST Tue Nov 29 2022

SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH THIS EVENING ...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING...
Rest Of Today...South Winds 15 To 20 Knots. Seas 4 To 5 Feet, Occasionally To 6 Feet. A Slight Chance Of Thunderstorms. A Chance Of Showers Late This Morning, Then A Slight Chance Of Showers This Afternoon.
Tonight...South Winds Around 15 Knots, Becoming West After Midnight. Gusts Up To 25 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet. A Chance Of Showers And Thunderstorms In The Evening, Then Showers And Thunderstorms Likely After Midnight.
Wednesday...North Winds 20 To 25 Knots With Gusts Up To 40 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet.
Wednesday Night...Northeast Winds 20 To 25 Knots With Gusts Up To 35 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet.
Thursday...East Winds 15 To 20 Knots With Gusts Up To 30 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet.
Thursday Night...East Winds 15 To 20 Knots With Gusts Up To 25 Knots. Seas 4 To 5 Feet, Occasionally To 6 Feet.
Friday...Southeast Winds 15 To 20 Knots. Seas 3 To 5 Feet, Occasionally To 6 Feet.
Friday Night...Southeast Winds 10 To 15 Knots. Seas 3 To 4 Feet.
Saturday...Southeast Winds Around 10 Knots. Seas Around 3 Feet. A Slight Chance Of Showers.
Saturday Night...Southeast Winds 10 To 15 Knots. Seas 3 To 4 Feet. Winds And Seas Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service Lake Charles LA
542am CST Tuesday Nov 29 2022

Long Term
(Friday through Tuesday) Issued at 430am CST Tuesday Nov 29 2022

Surface high pressure centered over the mid Atlantic coast Friday will turn increasing winds southeasterly, advecting a shallow, but warm and humid airmass back across the region through the day. Dewpoints are forecast to climb from the mid 40s Friday morning into the mid 60s by Friday evening. The tropical airmass will allow temperatures to climb well above normal through the weekend with afternoon highs in the upper 70s (lower 80s across central Louisiana) and overnight lows in the lower 60s. Aloft, a sprawling upper level ridge centered over the central Gulf of Mexico will maintain comparably dry, zonal flow in the mid and upper levels resulting in only scattered cloud cover.

A shortwave is forecast to move quickly out of the Pacific northwest across the northern plains and into the Great Lakes region Friday into Saturday. A trailing frontal boundary will dig south across the central U.S. but will meet strong resistance from the ridge over the gulf causing it to stall. A majority of guidance stalls the boundary further north across central and southern Arkansas compared to north Louisiana as was being depicted yesterday. Should this scenario verify, the result would be only isolated convection across the region which would be more diurnally driven in response to the tropical airmass rather than frontal lifting. Should the front stall further south, more widespread convection would be expected Saturday.

The gulf ridge will expand north across the northern gulf coast Sunday into Monday pushing the stalled boundary back to the north and lifting some drier mid level air across the area as it does so. Steady southerly flow at the surface will maintain temperatures 10 to 15 degrees above climatological norms into the first half of next week.

Marine
Issued at 430am CST Tuesday Nov 29 2022

Southeast flow is increasing over the coastal waters this early morning and with that warm and moist Gulf air is being push back over relatively cooler near shore water temperatures with mid 60 dewpoints moving over lower 60s water temperatures. The result has been sea fog especially over the southeast Texas and lower southwest Louisiana near shore waters according to satellite. However, not receiving any widespread reports of below 1 nm visibilities in that area, so no marine dense fog advisory as of now but will monitor closely. This flow will continue through the day, so at least patchy sea fog is likely to persist over the near shore waters through the day. Wind speeds will be in the 15 to 20 knot range so will continue the exercise caution wording.

A cold front will move through the coastal waters late tonight and early Wednesday morning. Thunderstorms will develop ahead of the front, some could be strong with gusty winds and frequent cloud to water lightning. The chance for storms and any lingering sea fog will end with the frontal passage.

In wake of the front, high pressure will build down from the Plains bringing northerly winds and cold air advection. This will allow for strong and gusty offshore winds. There will be the potential for frequent wind gusts over gale force by Wednesday afternoon beyond 20 nm. Therefore a Gale Watch has been issued for the coastal waters between High Island and Cameron and this maybe extended for all the outer waters later today.

NOAA Lake Charles LA Office: Watches - Warnings - Advisories
LA...None. TX...None. GM...Gale Watch from Wednesday morning through Wednesday evening for GMZ450-470.