Marine Weather and Tide Forecast for Berwick, LA

DISCUSSION
(Today through Sunday)
Issued at 1214 AM CDT Mon Apr 20 2026

High pressure currently centers over the Great Lakes region with moderate ridging extending southward off the Gulf Coast. As this features shifts further east along the Atlantic Seaboard winds will acquire east to southeast components this afternoon. The high pressure will also keep skies precipitation free through tonight.
Meanwhile an upper level disturbances is set to organize over New Mexico, as Gulf moisture filters across central TX. With a fairly active subtropical jet aloft, mid and upper level cloud cover will keep skies partly sunny with highs in the mid 70s areawide.

As the incoming disturbance from the west continues to organize over Texas on Tuesday, mid level moisture will advect eastward with precipitation expected over Central Texas. Concurrently, surface- 850mb ridging will continue to remain in place, capping any convective potential. However, stratiform precipitation will begin to shift toward southeast Texas and portions of far Southwest Louisiana into the afternoon hours. Expect a little thicker cloud coverage in the mid to upper levels which will nudge temperatures down several degrees- most notably across our SETX counties where the highest PoPs are expected. Cities further east toward and along the Atchafalaya will continue to experience highs in the mid to upper 70s where skies are expected to have a little more sunshine. The upper level feature will sink toward the TX / LA coastline Tuesday night with rainfall chances increasing over south central Louisiana. At this time, it is likely some evaporation will occur before reaching the surface while low level moisture profiles improve into Wednesday morning. With a little stronger moisture convergence in place, periods of showers are expected throughout the afternoon Wednesday areawide, though chances significantly decreasing east of the I-49 corridor. Winds will be acquiring more south-southeast components allowing highs to build back to the upper 70's for most locations. Worth noting, surface high pressure keeps any convective potential inhibited through Wednesday morning. Currently, the Weather Prediction Center yields a Marginal Risk (level 1 out of 4) for excessive rainfall Wednesday. There is some uncertainty whether low level capping will erode to allow warm rain cloud processes to become somewhat efficient along SETX and far SWLA. Should the forecast trend to further warming of surface dewpoints, a few pockets of heavy rainfall are not out of the question.

By Thursday, temperatures lift back into the low 80s while lingering isolated pops still remain through the afternoon as the disturbances fills and broadens eastward. Another shortwave developing over the northern 48 will keep isolated to scattered PoPs in the forecast through the upcoming weekend. Temperatures are also forecast to build into the mid 80s through the rest of the period as well.

AVIATION
(12Z TAFS)
Issued at 616 AM CDT Mon Apr 20 2026

VFR conditions are expected through the period as just mid and high level cloudiness is expected to increase overhead. Winds after 20/15z are expected to be from the east at 10 to 15 knots, then decreasing after sunset.

07/Rua

MARINE
Issued at 1214 AM CDT Mon Apr 20 2026

Conditions will remain breezy and out of the east today and gain more SE components throughout the week. Rain chances increase again by Tuesday and peak on Wednesday as a disturbance meanders around the western Gulf near the south TX coastline. This disturbance will start to erode to the east by the late week, allowing rain chances to come down, while winds remain in the 10-15kts range.

FIRE WEATHER
Issued at 1214 AM CDT Mon Apr 20 2026

A dry airmass is forecast to remain in place for today with MinRH ranging 28-38%, however, any fire concerns will decrease as winds will become lighter, around 5-10 kt. By Tuesday, the winds begin shift to the southeast, which will increase RH and chances for subsequent scattered showers over the area that help mitigate fire weather concerns through the remainder of the forecast period.

LCH WATCHES/WARNINGS/ADVISORIES
LA...None.
TX...None.
GM...None.