Marine Weather and Tide Forecast for Hayes, LA

DISCUSSION
(Today through Monday)
Issued at 1219 AM CDT Tue Apr 21 2026

As of midnight, drizzle to light showers continue across portions of coastal SETX. Dry air remains in place per the latest sounding, resulting in much of the radar returns falling as light drizzle.
Temperatures are generally in the mid 50s to lower 60s, with overnight lows expected to fall only a few degrees further due to increasing cloud cover.

Showers should gradually taper through the early morning hours; however, additional rounds are expected late morning into the afternoon as a weak upper level disturbance moves east across the Southern Plains. At the surface, high pressure continues shifting eastward, allowing moisture rich southerly flow to return today and persist through the remainder of the forecast period.

As the aforementioned disturbance approaches and the column continues to moisten, coverage and intensity of showers will increase, with the greatest coverage expected on Wednesday. A Marginal Risk (lvl 1 of 4) for excessive rainfall is in place.
Deterministic rainfall totals generally range from a half inch to one inch, with probabilities of exceeding one inch remaining below 40 percent.

Persistent southerly flow at the surface combined with passing upper level disturbances will support daily isolated to scattered showers. Instability is expected to remain weak through most of the work week; however, a few isolated, subsevere thunderstorms cannot be ruled out.

Looking ahead to the weekend, conditions will bear watching as a deeper trough interacts with the plume of Gulf moisture.
Temperatures and dewpoints will remain above average, with afternoon highs in the mid to upper 80s and overnight lows in the mid 60s to lower 70s. Dewpoints will generally range in the 60s to lower 70s.

AVIATION
(06Z TAFS)
Issued at 1219 AM CDT Tue Apr 21 2026

Isolated showers across SETX continue to diminish as of midnight.
Another round of showers is expected to develop tomorrow morning, spreading across the area through the afternoon and evening. Only light showers are expected to reach Acadiana terminals, so VCSH has been maintained at this time. Activity should taper off into the evening.

MARINE
Issued at 1219 AM CDT Tue Apr 21 2026

Southerly flow will return as surface high pressure shifts eastward. A developing disturbance over STX will help increase rain chances through midweek. Elevated moisture and passing upper level disturbances will support continued shower activity and persistent onshore flow through the period.

FIRE WEATHER
Issued at 1219 AM CDT Tue Apr 21 2026

Winds will become onshore as the surface high pressure moves eastward, bringing a rich plume of Gulf moisture into the region.
Increased moisture and rain chances through the end of the week will limit fire weather concerns and may contribute to some improvement in drought conditions.

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