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Marine Weather and Tide Forecast for St. Martin, MS

April 22, 2025 2:13 AM CDT (07:13 UTC) Change Location
Sunrise 6:18 AM   Sunset 7:29 PM
Moonrise 3:05 AM   Moonset 2:01 PM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
   
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NOTE: Zones were updated 3/20/2025
GMZ532 Mississippi Sound- 934 Pm Cdt Mon Apr 21 2025

Rest of tonight - South winds 5 to 10 knots. Waves 1 foot or less. A slight chance of showers and Thunderstorms late.

Tuesday - South winds 5 to 10 knots. Waves 1 foot or less. A chance of showers and Thunderstorms.

Tuesday night - South winds 5 to 10 knots. Waves 1 foot or less. A slight chance of showers and Thunderstorms in the evening.

Wednesday - Southeast winds 5 to 10 knots. Waves 1 foot or less, then around 2 feet in the afternoon. A chance of showers and Thunderstorms.

Wednesday night - Southeast winds 5 to 10 knots. Waves 1 foot or less. A slight chance of showers in the evening.

Thursday - Southeast winds 5 to 10 knots. Waves around 2 feet. A slight chance of showers in the afternoon.

Thursday night - Southeast winds 5 to 10 knots. Waves around 2 feet in the evening, then 1 foot or less.

Friday - Southeast winds 5 to 10 knots. Waves around 2 feet.

Friday night - Southeast winds 5 to 10 knots, becoming south after midnight. Waves 1 foot or less.

Saturday - Southeast winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Waves 1 foot or less.

Saturday night - South winds 5 to 10 knots. Waves 1 foot or less.
winds and waves higher in and near Thunderstorms.
GMZ500 934 Pm Cdt Mon Apr 21 2025

Synopsis for pascagoula to atchafalaya river out 60 nm -
an onshore flow will remain through the week. Winds will remain below 15 knots through the week outside of Thunderstorms.

7 Day Forecast for Marine Location Near St. Martin, MS
   
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NEW! Add second zone forecast

Tide / Current for Biloxi, Biloxi Bay, Mississippi
  
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Biloxi
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Tue -- 03:04 AM CDT     Moonrise
Tue -- 04:38 AM CDT     -0.17 feet Low Tide
Tue -- 06:20 AM CDT     Sunrise
Tue -- 02:01 PM CDT     Moonset
Tue -- 06:09 PM CDT     1.60 feet High Tide
Tue -- 07:27 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Biloxi, Biloxi Bay, Mississippi does not exist in database. Press Edit above and select a valid nearby location.

Biloxi, Biloxi Bay, Mississippi, Tide feet
12
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0.5
1
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0.3
2
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0.1
3
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-0.1
4
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-0.2
5
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-0.2
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-0.1
7
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0
8
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0.2
9
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0.3
10
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0.5
11
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0.7
12
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0.9
1
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1.1
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1.2
3
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1.4
4
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1.5
5
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1.6
6
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1.6
7
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1.6
8
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1.5
9
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1.4
10
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1.2
11
pm
1

Tide / Current for Gulfport, Gulfport Harbor, Mississippi
  
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Gulfport
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Tue -- 03:05 AM CDT     Moonrise
Tue -- 04:03 AM CDT     0.13 feet Low Tide
Tue -- 06:21 AM CDT     Sunrise
Tue -- 02:02 PM CDT     Moonset
Tue -- 06:21 PM CDT     1.55 feet High Tide
Tue -- 07:28 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Gulfport, Gulfport Harbor, Mississippi does not exist in database. Press Edit above and select a valid nearby location.

Gulfport, Gulfport Harbor, Mississippi, Tide feet
12
am
0.7
1
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0.5
2
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0.3
3
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0.2
4
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0.1
5
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0.1
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0.4
9
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10
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0.7
11
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0.9
12
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1
1
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1.1
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1.5
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1.5
9
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1.4
10
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1.3
11
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1.2

Area Discussion for New Orleans/Baton Rouge, LA
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NOTE: mouseover dotted underlined text for definition
FXUS64 KLIX 220439 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 1139 PM CDT Mon Apr 21 2025

New AVIATION

SHORT TERM
(This evening through Wednesday night)
Issued at 242 PM CDT Mon Apr 21 2025

Little change in the overall pattern is expected through Wednesday night. This pattern will be driven by a gradually weakening stationary front draped across the area and a prevailing southwesterly flow pattern aloft. A series of weak and fast moving upper level vorticity maxima embedded with the broader southwest flow pattern will pass through the area each day. Additionally, a persistent onshore flow from the Gulf will keep conditions warm, humid, and unstable through the period. The end result will be a very early Summer like pattern typically seen more in mid to late May with diurnally forced convective activity peaking in the early to mid-afternoon hours. This convection will be anchored on the stalled frontal boundary, and overall storm motion will be limited as cells back-build along the anchor points. Given that PWATS are in the 75th percentile range, some locally heavy rainfall of 1 to 2 inches per hour will occur at times. This could lead to isolated flooding concerns, especially in more urbanized locations both Tuesday and Wednesday.

LONG TERM
(Thursday through Sunday night)
Issued at 242 PM CDT Mon Apr 21 2025

The combination of a ridge axis gradually building in from the west on Thursday and Friday and the stationary front completely dissipating by Friday will lead to diminishing rain chances each day. Widely scattered diurnally forced shower and thunderstorm activity will once again develop on Thursday, especially for areas north of the I-10/12 corridor where the stalled boundary is expected to be located. This activity will turn more isolated by Friday afternoon as the front dissipates fully and the influence of the ridge strengthens a mid-level capping inversion.
Temperatures will also gradually warm in response to increasing upper level subsidence and greater solar insolation. Highs will climb into the low to mid 80s on Thursday and the mid to upper 80s on Friday.

The ridge axis will be in firm control over the weekend as it expands across the Gulf South. This deep layer ridging will result in very warm and muggy conditions as highs climb into the mid to upper 80s each day and lows only dip into the low to mid 70s. Rain chances will be suppressed due to a strong mid-level capping inversion associated with the deep layer subsidence. With ample sunshine and light southeasterly flow of less than 10 mph in place, heat will be a concern for those partaking in outdoor events. Heat index values will climb into the upper 80s and lower 90s. Although these values are not extreme, the early season nature of this heat and visitors from cooler climates for the outdoor events will present a higher heat illness threat this weekend.

AVIATION
(06Z TAFS)
Issued at 1133 PM CDT Mon Apr 21 2025

Mixture of low VFR to MVFR/IFR conditions is forecast for the period. Low ceilings is forecast and there is some potential for fog especially at MCB. Tomorrow will have on and off showers and thunderstorms during the daytime hours again so individual terminals could have periods of IFR or later depending on storm activity. It should then begin to dissipate after sunset. -BL

MARINE
Issued at 242 PM CDT Mon Apr 21 2025

An almost Summer-like pattern will be in place through the weekend across the coastal waters as a strong high pressure system remains parked across the eastern Gulf. This will keep a southeast flow regime of around 10 knots in place through the entire period. Seas of 2 to 4 feet are also expected through the weekend. Overall, no significant weather concerns for maritime operations are expected through Sunday.

PRELIMINARY POINT TEMPS/POPS
MCB 66 83 65 83 / 50 60 30 70 BTR 67 83 67 84 / 30 60 40 60 ASD 68 83 68 83 / 30 50 30 50 MSY 70 82 70 82 / 20 50 30 40 GPT 71 80 70 79 / 20 50 20 40 PQL 69 81 69 80 / 20 50 20 40

LIX WATCHES/WARNINGS/ADVISORIES
LA...None.
GM...None.
MS...None.
GM...None.


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 18 mi55 min 76°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 23 mi55 minSSE 11G12 82°F 75°F30.04
PTBM6 - 8741003 - Petit Bois Island, MS 25 mi55 minSE 9.9G13 73°F 30.06
GDXM6 - Grand Bay Reserve, MS 26 mi88 minSE 12 74°F 30.0972°F
42067 - USM3M02 30 mi143 minE 12G18 74°F 3 ft30.0871°F
MBPA1 44 mi55 min 74°F 74°F
DILA1 45 mi55 minSSE 12G14 74°F 30.07
DPHA1 45 mi133 min8 74°F 74°F30.09
EFLA1 47 mi55 min 73°F 73°F
MCGA1 - 8736897 - Coast Guard Sector Mobile, AL 48 mi55 minSE 7G11 72°F 76°F30.08
PTOA1 49 mi55 min 72°F 70°F


Wind History for Bay Waveland Yacht Club, MS
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Airport Reports
   
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KBIX KEESLER AFB,MS 1 sm18 minSSE 0710 smMostly Cloudy75°F70°F83%30.03
KGPT GULFPORTBILOXI INTL,MS 9 sm20 minSSE 0610 smOvercast73°F72°F94%30.05
KPQL TRENT LOTT INTL,MS 20 sm20 minSE 0510 smA Few Clouds72°F70°F94%30.05

Weather Map
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GEOS Local Image of Southern Mississippi Valley  
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Mobile, AL,





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