Marine forecast
Port Fourchon–Lower Atchafalaya R. (20–60 nm)
- current wind
- 8 kt ESE
- Seas
- 1.6 ft
- Period
- 6 sec
- Air
- 81°F
- 72-hr peak
- 18 kt
Observed Tue 2:15 PM | GMZ570
- Seas now
- 1.6 ft · 6 sec
- Air
- 81°F
- 72-hr peak
- 18 kt
- Peak seas
- 4 ft
In brief
At 2:15 pm CDT on Oct 13, 2026, NDBC station KSPR (Ship Shoal 178 (Apache Corp), 32 miles away) measured wind from the ESE at 8 kt; buoy 42084 measured seas of 1.6 ft. The NWS forecast for Port Fourchon–Lower Atchafalaya R. (20–60 nm), LA issued at 1:56 pm CDT on Oct 13, 2026 reads, for this afternoon: “Southeast winds around 10 knots. Seas around 2 feet.”
Source: National Weather Service New Orleans LA forecast; NDBC observations
Wind forecast · ktPeak 18 kt
Seas forecast · ftPeak 4 ft
NWS marine forecast
| Period | Forecast |
|---|---|
| This Afternoon | Southeast winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds. |
| Tonight | Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. |
| Wednesday | East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. |
| Wednesday Night | East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 6 seconds. |
| Thursday | East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. A slight chance of showers in the afternoon. |
| Thursday Night | East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. |
| Friday | Northeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Showers likely with a chance of thunderstorms in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. |
| Friday Night | Northeast winds 15 to 20 knots, increasing to 25 to 30 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet, building to 6 to 9 feet, occasionally to 11 feet after midnight. Wave Detail: East 3 feet at 6 seconds, becoming northeast 9 feet at 5 seconds. A slight chance of showers and thunderstorms in the evening. |
| Saturday | Northeast winds 25 to 30 knots. Seas 9 to 12 feet, occasionally to 15 feet. Wave Detail: Northeast 12 feet at 8 seconds. |
| Saturday Night | Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 8 to 11 feet, occasionally to 14 feet. Wave Detail: Northeast 11 feet at 8 seconds. Winds and seas higher in and near thunderstorms. |
Issued Tue 1:56 PM by New Orleans LA (product CWFLIX).
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 2:15 PM | 8 kt ESE | — | — | — |
| Tue 1:55 PM | 8 kt SE | — | — | — |
| Tue 12:55 PM | 8 kt SE | — | — | — |
| Tue 11:55 AM | 9 kt SE | — | — | — |
| Tue 10:55 AM | 9 kt SE | — | — | — |
| Tue 9:55 AM | 10 kt SE | — | — | — |
| Tue 8:55 AM | 9 kt SSE | — | — | — |
| Tue 7:55 AM | 9 kt SSE | — | — | — |
| Tue 6:55 AM | 8 kt SSE | — | — | — |
| Tue 5:55 AM | 10 kt SSE | — | — | — |
| Tue 4:55 AM | 10 kt SSE | — | — | — |
| Tue 3:55 AM | 10 kt SSE | — | — | — |
Observed Tue 2:15 PM at NDBC buoy KSPR (Ship Shoal 178 (Apache Corp)), 31.6 miles away. Seas from buoy 42084 (Southwest Pass Entrance W, LA (256)), 73.8 miles away, at Tue 2:00 PM.
Frequently asked questions
What is the marine forecast for Port Fourchon–Lower Atchafalaya R. (20–60 nm) today?
This Afternoon: Southeast winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds.
Is there a small craft advisory for Port Fourchon–Lower Atchafalaya R. (20–60 nm)?
No advisories, warnings or watches are in effect for NWS zone GMZ570 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.
How high are the waves at Port Fourchon–Lower Atchafalaya R. (20–60 nm) right now?
Seas are running 1.6 ft at a 6-second period, measured at NDBC buoy KSPR Tue 2:15 PM, 31.6 miles from this zone. The forecast peaks at 4.0 ft Wed 10 PM.
What do the wind speeds in knots mean?
One knot is 1.15 mph. The National Weather Service issues a small craft advisory for sustained winds of roughly 22–33 knots or hazardous seas, a gale warning at 34–47 knots, and a storm warning at 48 knots and above. Exact advisory thresholds vary by forecast office and by water body — a bay reaches dangerous chop at a lower wind speed than open ocean.
Where does this forecast come from?
The forecast text is the National Weather Service's own marine bulletin for zone GMZ570, issued by New Orleans LA, reproduced in full. The wind and seas charts are drawn from the NWS gridded forecast for a point inside the zone. Observations come from the nearest reporting NDBC buoy. We are not affiliated with NOAA or the National Weather Service.
Forecast: NOAA/NWS product CWFLIX, issued Tue 1:56 PM. Observations: NOAA National Data Buoy Center station KSPR, read Tue 2:15 PM. Retrieved Oct 13, 2:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.