Marine Weather Net

Intracoastal City to Cameron, LA Marine Forecast


REST OF TONIGHT

S
WINDS
10 - 15
KNOTS

MONDAY

S
WINDS
10 - 15
KNOTS

MONDAY NIGHT

SW
WINDS
10 - 15
KNOTS

TUESDAY

NE
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
GMZ452 Forecast Issued: 928 PM CST Sun Jan 24 2021

DENSE FOG ADVISORY IN EFFECT UNTIL 6 AM CST MONDAY ...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 9 AM CST MONDAY...
Rest Of Tonight...South Winds 10 To 15 Knots. Seas 2 To 4 Feet. Areas Of Dense Fog. Slight Chance Of Showers.
Monday...South Winds 10 To 15 Knots. Seas 3 To 5 Feet. Areas Of Fog In The Morning, Then Patchy Fog In The Afternoon. Slight Chance Of Showers In The Morning, Then Chance Of Showers And Slight Chance Of Thunderstorms In The Afternoon.
Monday Night...Southwest Winds 10 To 15 Knots Becoming Northwest 5 To 10 Knots After Midnight. Seas 3 To 5 Feet. Patchy Fog In The Evening. Chance Of Rain Showers In The Evening. Slight Chance Of Thunderstorms Through The Night. Slight Chance Of Rain Showers After Midnight.
Tuesday...Northeast Winds 5 To 10 Knots. Seas 2 To 4 Feet. Slight Chance Of Showers And Thunderstorms In The Afternoon.
Tuesday Night...East Winds 5 To 10 Knots Becoming Southeast After Midnight. Seas 1 To 3 Feet. Chance Of Rain Showers And Slight Chance Of Thunderstorms.
Wednesday...Northwest Winds 10 To 15 Knots. Seas 2 To 4 Feet. Slight Chance Of Showers And Thunderstorms In The Morning.
Wednesday Night...North Winds 15 To 20 Knots. Seas 2 To 4 Feet.
Thursday...Northeast Winds 15 To 20 Knots. Seas 2 To 4 Feet.
Thursday Night...Northeast Winds 10 To 15 Knots. Seas 1 To 3 Feet.
Friday...East Winds 10 To 15 Knots. Seas 1 To 3 Feet.
Friday Night...Southeast Winds 10 To 15 Knots. Seas 1 To 3 Feet.
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Synopsis for Lower Atchafalaya River LA to High Island TX out 60 NM including Sabine and Calcasieu Lakes and Vermilion Bay: GMZ400
928 PM CST Sun Jan 24 2021

Dense fog will continue across the coastal waters overnight and through Monday morning. Winds and seas will increase after midnight tonight and linger into the morning hours as the pressure gradient increases ahead of an approaching cold front, with increased chances of showers and isolated thunderstorms. The front will move through the coastal waters Monday with brief offshore flow. A stronger cold front will move through the coastal waters Wednesday, with moderate offshore flow through Thursday.
Area Forecast Discussion
National Weather Service Lake Charles LA
946pm CST Sunday Jan 24 2021

Everything looks good as is per recent obs/trends/guidance. Regional 88Ds show a few very light streamer showers moving into the swarning zones, otherwise the majority of the nearby precipitation is developing to our northwest which should begin moving into interior sern TX later tonight. Surface observations indicate some restrictions to visibility already developing while latest guidance shows areas near the coast being the primary locations for dense fog later tonight - although some guidance is starting to point towards more inland portions of Acadiana so that will bear watching later.

No evening update is planned at this time. 25

Marine
Obs from the coastal waters have shown periodic dense fog throughout the evening hours so no changes are planned to the going Marine Fog Advisory at this time.

AVIATION...Low vis and ceilings can be expected again tonight as stratus and fog lingers. A gradual improvement to MVFR (Marginal Visual Flight Rules) conditions can be expected during Monday morning a few hours after sunrise. Rain coverage will also increase in the morning with scattered to numerous showers moving through the region. Winds will be east to southeast during the period.

Wx map shows warm front moving northward across NE TX/N LA this afternoon. Lower visibilities continue across the coastal waters, and has improved along the coast. Temperatures have risen into the mid 70s across SE TX, with lower 70s across S LA, but still in the mid 60s across C LA. Most short term guidance continues the dense fog across the coastal waters, with some spread inland across the coastal parihses/counties. For this, will leave the Dense Fog Advisory for these areas through 6 am Monday. Area radars showing showers increasing just north of the region. Not expecting much precipitation, but will leave 20% chance of rain/drizzle this evening and overnight.

The next significant chance of precipitation will come Monday as a shortwave and large surface low over the midwest moves eastward, bringing increased moisture/lift and the cold front back across the area. With the southwest flow aloft, the front will likely stall offshore, move back northward by Tuesday night into Wednesday with the next shortwave to bring increased chances of precipitation and the cold front back southward.

With the upper air pattern becoming northwest Wednesday into next weekend, the cold front will move south of the region with cooler and dry weather to follow.

Marine Discussion
Dense fog will continue across the coastal waters this afternoon through Monday morning. Winds and seas will increase after midnight into Monday morning as the pressure gradient increases ahead of an approaching cold front, with increased chances of showers and isolated thunderstorms. The front will move through the coastal waters Monday with brief offshore flow. A stronger cold front will move through the coastal waters Wednesday, with moderate offshore flow through Thursday.

NOAA Lake Charles LA Office: Watches - Warnings - Advisories
LA...Dense Fog Advisory until 6am CST Monday for LAZ052>055-073-074.

TX...Dense Fog Advisory until 6am CST Monday for TXZ215.

GM...Dense Fog Advisory until 6am CST Monday for GMZ430-432-435-450- 452-455-470-472-475.

Small Craft Advisory until 9am CST Monday for GMZ470-472-475.

Small Craft Exercise Caution until 9am CST Monday for GMZ450- 452-455.