Tides Today & Tomorrow in Southwest Pass, Mississippi River, LA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Southwest Pass, Mississippi River, LA.
Next low tide : in 4h 01m at 9:21 pm (-0.2 ft)
Next high tide (tomorrow) : 12:00 pm (1.3 ft)
Sunset today : 7:57 pm
Sunrise tomorrow : 6:09 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - Mar 1979

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:390.411:36 AM0.45:120.37:020.06:235:57Waxing Crescent1Thu
2Fri11:520.69:33-0.16:225:57Waxing Crescent2Fri
3Sat12:280.811:23-0.26:215:58Waxing Crescent3Sat
4Sun1:140.96:195:59First Quarter4Sun
5Mon2:070.912:34-0.36:185:59First Quarter5Mon
6Tue3:080.91:28-0.36:176:00First Quarter6Tue
7Wed4:150.92:14-0.36:166:01Waxing Gibbous7Wed
8Thu5:250.92:55-0.36:156:01Waxing Gibbous8Thu
9Fri6:310.93:31-0.36:146:02Waxing Gibbous9Fri
10Sat7:300.84:02-0.26:136:02Waxing Gibbous10Sat
11Sun8:230.84:27-0.16:126:03Waxing Gibbous11Sun
12Mon9:120.74:440.06:116:04Full Moon12Mon
13Tue10:030.64:480.16:096:04Full Moon13Tue
14Wed10:550.411:000.54:350.33:270.36:086:05Full Moon14Wed
15Thu10:420.54:040.44:570.26:076:05Full Moon15Thu
16Fri12:230.410:50 AM0.73:010.46:270.26:066:06Waning Gibbous16Fri
17Sat11:110.88:040.16:056:07Waning Gibbous17Sat
18Sun11:421.09:420.06:046:07Waning Gibbous18Sun
19Mon12:221.111:04-0.26:026:08Third Quarter19Mon
20Tue1:131.26:016:08Third Quarter20Tue
21Wed2:151.212:12-0.36:006:09Third Quarter21Wed
22Thu3:311.21:11-0.35:596:09Third Quarter22Thu
23Fri4:591.22:06-0.35:586:10Waning Crescent23Fri
24Sat6:321.12:57-0.25:576:11Waning Crescent24Sat
25Sun8:021.03:42-0.15:556:11Waning Crescent25Sun
26Mon9:340.94:190.15:546:12New Moon26Mon
27Tue10:310.511:210.74:350.43:050.35:536:12New Moon27Tue
28Wed9:460.74:060.64:460.25:526:13New Moon28Wed
29Thu9:460.96:140.15:516:13New Moon29Thu
30Fri10:101.17:370.05:506:14Waxing Crescent30Fri
31Sat10:441.28:570.05:486:15Waxing Crescent31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8760959)

Common Questions About Southwest Pass, Mississippi River, LA Tides

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What time does the tide turn (slack tide) in Southwest Pass, Mississippi River, LA today?

Slack tide in Southwest Pass, Mississippi River, LA is approximately 4:40 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Southwest Pass, Mississippi River, LA?

Southwest Pass, Mississippi River, LA is currently in a spring phase. Tonight's moon is 7% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Southwest Pass, Mississippi River, LA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Southwest Pass, Mississippi River, LA?

Tide predictions for Southwest Pass, Mississippi River, LA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Southwest Pass, Mississippi River, LA?

Tide data for Southwest Pass, Mississippi River, LA is sourced from NOAA Station #8760959. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8760959.

What is the moon phase in Southwest Pass, Mississippi River, LA tonight?

Tonight the moon over Southwest Pass, Mississippi River, LA is Waxing Crescent (7% illuminated). This places Southwest Pass, Mississippi River, LA in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA