Marine Weather and Tide Forecast for Hackberry, LA

DISCUSSION
(This evening through next Wednesday)
Issued at 219 PM CDT Thu Apr 30 2026

Two large areas of convection has developed, a corridor across cenLA and another along I-10. The northern area is in response to upper shortwave perturbation moving across and the southern is along a confluence boundary. Both areas have a robust airmass with deep moisture and CAPE to openly use within an uncapped environment. Thus, anticipate a scenario playing out similar to what was seen north of our region yesterday. Corridors of heavy rainfall with embedded areas of strong storms capable of producing strong, damaging downdrafts and large hail. An embedded tornado threat will exist but is not likely.

Most convection will die off with sundown but active jet aloft and approaching shortwave from the west could keep light showers in the region overnight.

Decently amplified upper trough comes through again on Friday with widespread showers and thunderstorms expected. Heavy rainfall will be the greatest threat as sfc conditions will not be so conducive for severe conditions reaching the surface. There will exist an isolated severe threat, though, if downdrafts can reach the surface. This will persist until a strong cold front moves down into the region with much cooler and drier air set to arrive on Saturday morning.

Widespread heavy rainfall between today and Saturday morning should total 2 to 4 inches area wide with locally higher amounts. Areas north and west of a Hardin to Beauregard and Rapides parish line have already or will receive heavy rainfall from recent days to today. Considering further rainfall anticipated today and tomorrow, these areas are now under a flood watch from 4 AM Friday to 4 AM Saturday.

This watch area may be expanded to include further regions based on rainfall received today. Due to ongoing drought conditions and low water catch basins, its unlikely that regions very far south of the watch will need to be included. Continue to monitor the forecast for further updates.

AVIATION
(00Z TAFS)
Issued at 625 PM CDT Thu Apr 30 2026

The last of the rain is moving out of the region. Behind the rain is overcast skies that will stay near MVFR/VFR heights. Near sunrise, around 12Z a disturbance will move into the region brining widespread heavy rain with the occasional thunderstorm.

After the rain begins the rest of the TAF forecast will be IFR with periods of LIFR possible near heavier showers and thunderstorms.

MARINE
Issued at 219 PM CDT Thu Apr 30 2026

A boundary sluggishly moving over the region should sink down into coastal waters late tonight with strong offshore winds developing thereafter. Showers and thunderstorms with downpours are anticipated to develop and persist across coastal waters from tonight through Saturday when a strong cold front moves into the central Gulf.

Offshore winds will strengthen from west to east mid day thru afternoon Friday. Strong winds will then persist into at least Saturday morning. Winds and seas will diminish into Sunday morning with onshore winds to resume at the start of the week.

FIRE WEATHER
Issued at 219 PM CDT Thu Apr 30 2026

Two large areas of convection has developed, a corridor across cenLA and another along I-10. The northern area is in response to upper shortwave perturbation moving across and the southern is along a confluence boundary. Both areas have a robust airmass with deep moisture and CAPE to openly use within an uncapped environment. Thus, anticipate a scenario playing out similar to what was seen north of our region yesterday. Corridors of heavy rainfall with embedded areas of strong storms capable of producing strong, damaging downdrafts and large hail. An embedded tornado threat will exist but is not likely.

Most convection will die off with sundown but active jet aloft and approaching shortwave from the west could keep light showers in the region overnight.

Decently amplified upper trough comes through again on Friday with widespread showers and thunderstorms expected. Heavy rainfall will be the greatest threat as sfc conditions will not be so conducive for severe conditions reaching the surface. There will exist an isolated severe threat, though, if downdrafts can reach the surface. This will persist until a strong cold front moves down into the region with much cooler and drier air set to arrive on Saturday morning.

Widespread heavy rainfall between today and Saturday morning should total 2 to 4 inches area wide with locally higher amounts. Areas north and west of a Hardin to Beauregard and Rapides parish line have already or will receive heavy rainfall from recent days to today. Considering further rainfall anticipated today and tomorrow, these areas are now under a flood watch from 4 AM Friday to 4 AM Saturday.

This watch area may be expanded to include further regions based on rainfall received today. Due to ongoing drought conditions and low water catch basins, its unlikely that regions very far south of the watch will need to be included. Continue to monitor the forecast for further updates.

LCH WATCHES/WARNINGS/ADVISORIES
LA...Flood Watch from 4 AM CDT Friday through late Friday night for LAZ027-028-030.

TX...Flood Watch from 4 AM CDT Friday through late Friday night for TXZ180-201-259>262.

GM...Small Craft Advisory from 10 AM Friday to 7 AM CDT Saturday for GMZ450-452-470-472.

Small Craft Advisory from 4 PM Friday to 7 AM CDT Saturday for GMZ455-475.