Marine Weather and Tide Forecast for Biloxi, MS
February 17, 2025 3:21 PM CST (21:21 UTC) Change Location
![]() | Sunrise 6:32 AM Sunset 5:46 PM Moonrise 11:35 PM Moonset 10:06 AM |
GMZ532 Mississippi Sound- 921 Am Cst Mon Feb 17 2025
This afternoon - Northeast winds around 15 knots, becoming east 5 to 10 knots. Waves 2 to 3 feet, subsiding to 1 to 2 feet.
Tonight - East winds 5 to 10 knots. Waves 1 foot or less, then around 2 feet after midnight.
Tuesday - East winds 10 to 15 knots. Waves 2 to 3 feet.
Tuesday night - Southeast winds 10 to 15 knots with gusts up to 20 knots. Waves around 3 feet. A chance of Thunderstorms. Showers.
Wednesday - North winds 15 to 20 knots. Waves 3 to 4 feet. Showers likely with a chance of Thunderstorms in the morning.
Wednesday night - North winds 15 to 20 knots with gusts up to 25 knots. Waves around 4 feet.
Thursday - North winds 15 to 20 knots. Waves 3 to 4 feet.
Thursday night - Northeast winds 15 to 20 knots. Waves 3 to 4 feet.
Friday - Northeast winds 15 to 20 knots, diminishing to 5 to 10 knots in the afternoon. Waves 2 to 4 feet.
Friday night - Northeast winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Waves 2 to 3 feet. A slight chance of showers after midnight.
winds and waves higher in and near Thunderstorms.
winds and waves higher in and near Thunderstorms.
GMZ500 921 Am Cst Mon Feb 17 2025
Synopsis for pascagoula to atchafalaya river out 60 nm -
high pressure will begin to settle over the northern gulf allowing winds to shift to an easterly direction and lower to around 10 knots today. Another system will impact the waters midweek and another by the end of this week.
high pressure will begin to settle over the northern gulf allowing winds to shift to an easterly direction and lower to around 10 knots today. Another system will impact the waters midweek and another by the end of this week.

NEW! Add second zone forecast
Ship Island Pass Click for Map Mon -- 06:33 AM CST Sunrise Mon -- 09:06 AM CST Moonset Mon -- 01:30 PM CST 0.81 feet High Tide Mon -- 05:46 PM CST Sunset Mon -- 10:33 PM CST Moonrise Tide / Current data from XTide NOT FOR NAVIGATION |   |
Ship Island Pass, Mississippi, Tide feet
12 am |
0.2 |
1 am |
0.2 |
2 am |
0.3 |
3 am |
0.3 |
4 am |
0.3 |
5 am |
0.3 |
6 am |
0.4 |
7 am |
0.4 |
8 am |
0.5 |
9 am |
0.5 |
10 am |
0.6 |
11 am |
0.7 |
12 pm |
0.8 |
1 pm |
0.8 |
2 pm |
0.8 |
3 pm |
0.8 |
4 pm |
0.7 |
5 pm |
0.6 |
6 pm |
0.5 |
7 pm |
0.3 |
8 pm |
0.2 |
9 pm |
0.1 |
10 pm |
0 |
11 pm |
-0 |
Gulfport Click for Map Mon -- 01:46 AM CST 1.03 feet High Tide Mon -- 06:34 AM CST Sunrise Mon -- 07:43 AM CST 0.76 feet Low Tide Mon -- 09:06 AM CST Moonset Mon -- 01:52 PM CST 1.25 feet High Tide Mon -- 05:46 PM CST Sunset Mon -- 09:45 PM CST 0.61 feet Low Tide Mon -- 10:34 PM CST Moonrise Tide / Current data from XTide NOT FOR NAVIGATION |   |
Gulfport, Gulfport Harbor, Mississippi, Tide feet
12 am |
1 |
1 am |
1 |
2 am |
1 |
3 am |
1 |
4 am |
0.9 |
5 am |
0.9 |
6 am |
0.8 |
7 am |
0.8 |
8 am |
0.8 |
9 am |
0.8 |
10 am |
0.9 |
11 am |
1 |
12 pm |
1.1 |
1 pm |
1.2 |
2 pm |
1.2 |
3 pm |
1.2 |
4 pm |
1.1 |
5 pm |
1 |
6 pm |
0.9 |
7 pm |
0.8 |
8 pm |
0.7 |
9 pm |
0.6 |
10 pm |
0.6 |
11 pm |
0.7 |
Area Discussion for New Orleans/Baton Rouge, LA
Hide  HelpNOTE: mouseover dotted underlined text for definition
FXUS64 KLIX 172115 AFDLIX
Area Forecast Discussion National Weather Service New Orleans LA 315 PM CST Mon Feb 17 2025
New SHORT TERM, LONG TERM, MARINE
KEY MESSAGES
1 - Marginal threat of excessive rainfall and severe weather overnight Tuesday night into Wednesday morning. Widespread rain amounts of two inches or more are possible across the area, which could cause some runoff issues, especially in urban areas. Main severe weather concern would be hail near quarter size.
2 - A strong cold front will bring widespread freeze conditions to most of the area Wednesday night and again Thursday night. This is likely to include portions of the New Orleans metro area, with potential for hard freeze conditions across SW MS and portions of SE LA near and north of Interstate 12. Wind chill values in the teens and lower 20s are likely across much of the area both Wednesday night and Thursday night. Expectation is that Cold Weather Advisories will be necessary for just about the entire CWA both nights.
SHORT TERM
(This evening through Tuesday night)
Issued at 300 PM CST Mon Feb 17 2025
Upper flow is generally zonal across the southern half of the country this afternoon. At the surface, high pressure extended from the Canadian Prairie Provinces to the lower Mississippi River Valley. Clear skies across the area this afternoon with temperatures generally in the mid and upper 50s.
Tonight will remain mostly clear with surface winds gradually coming around to the east. Temperatures may not be quite as cold as this morning, but won't rule out isolated readings near freezing, especially in the Pascagoula River drainage region in Jackson County.
Isentropic processes will bring a lowering cloud deck to the area during the daytime hours Tuesday, with light rain potentially reaching the surface prior to sunset Tuesday. With the baroclinic zone likely remaining off the Louisiana coastline Tuesday and Tuesday night, a developing surface wave is likely to move eastward along this zone toward the area Tuesday night.
Precipitable water values are expected to increase to the 75th to 90th percentile climatologically (1.25 to 1.6 inches). With the warm, moist air getting advected over the cold airmass, elevated, embedded convection is expected to develop. At this time, it appears that any surface based convection is likely to remain offshore, with the possible exception of lower Plaquemines Parish.
That leaves hail (up to an inch in diameter) as a potential concern. Widespread rain amounts of around 2 inches can be expected from Tuesday evening into Wednesday morning, with a few spot totals in excess of 3 inches. Could be some isolated runoff issues, especially in urban areas, but most areas have seen an inch or less of rain over the last couple weeks. At this time, a Flood Watch is not anticipated.
High temperatures Tuesday are expected to be warmer than today's readings, but are somewhat dependent on how quickly the clouds thicken and lower. A few hours difference in timing could be the difference between highs in the upper 50s and highs in the mid 60s. Temperatures will drop off somewhat Tuesday evening as precipitation onsets, before flattening out until after the passage of the surface wave. Across southern portions of the area near the baroclinic zone, temperatures could even rise a bit after midnight.
LONG TERM
(Wednesday through Sunday night)
Issued at 300 PM CST Mon Feb 17 2025
With the passage of the surface wave to the east of the area Wednesday morning, precipitation will end, and the arctic airmass will arrive. Little, if any, recovery in temperatures is expected during the daytime hours Wednesday, especially if clouds hold in all day as expected. It's entirely possible that the highs for the day could occur before most folks get out of bed Wednesday morning. Sub-freezing temperatures will be likely for most of the area both Thursday and Friday mornings, with hard freeze conditions likely, especially Friday morning, for at least the northern half of the area. It won't be as cold as the January cold wave, but considering the warmth of the last couple weeks, it is going to be a shock to both vegetation, which had already started greening up, and to people. Entirely possible that record lows will be threatened in some areas, especially Friday morning. Wind chill values in the teens and 20s are likely Thursday and Friday mornings. Cold Weather Advisories for much of the area are almost certain to be issued in later forecast packages for those mornings. Sunshine should allow temperatures to moderate somewhat by Friday afternoon.
Another shortwave moving near the Gulf Coast may spread some light precipitation into the area by Saturday afternoon or Saturday night, but temperatures should have moderated sufficiently to eliminate the potential for freezing or frozen precipitation.
Temperature forecast is going to be a battle for the second half of the week. As noted above, we may not see any recovery Wednesday. For Thursday and Friday, current numbers are a blended solution, somewhat toward the non-ECMWF solution, but can't discount those, as there is quite a bit of agreement within the ECMWF ensemble. By Sunday into early next week, temperatures will have moderated to near or above normal.
AVIATION
(18Z TAFS)
Issued at 1138 AM CST Mon Feb 17 2025
VFR conditions expected through the forecast period. Expect to see a mid-level cloud deck move in by late morning Tuesday, with ceilings lowering to perhaps FL050 by late afternoon. Could see some -RA by late afternoon as well, but don't expect any flight restrictions until after sunset Tuesday.
MARINE
Issued at 300 PM CST Mon Feb 17 2025
Wind conditions have relaxed across the waters, but this is only a brief respite. Easterly winds are expected to increase during the day Tuesday, and Small Craft Exercise Caution headlines, and possibly Small Craft Advisories, are likely to be needed by tomorrow afternoon across the western waters.
Mariners should expect a prolonged period of hazardous conditions across most waters from Tuesday afternoon or Tuesday night into at least Friday morning, before there's significant improvement in conditions.
PRELIMINARY POINT TEMPS/POPS
MCB 34 63 41 48 / 0 10 100 20 BTR 39 65 45 53 / 0 20 100 10 ASD 36 64 49 57 / 0 10 100 40 MSY 44 64 51 58 / 0 10 100 40 GPT 38 62 46 57 / 0 10 100 60 PQL 35 65 47 60 / 0 10 100 70
LIX WATCHES/WARNINGS/ADVISORIES
LA...None.
GM...None.
MS...None.
GM...None.
Area Forecast Discussion National Weather Service New Orleans LA 315 PM CST Mon Feb 17 2025
New SHORT TERM, LONG TERM, MARINE
KEY MESSAGES
1 - Marginal threat of excessive rainfall and severe weather overnight Tuesday night into Wednesday morning. Widespread rain amounts of two inches or more are possible across the area, which could cause some runoff issues, especially in urban areas. Main severe weather concern would be hail near quarter size.
2 - A strong cold front will bring widespread freeze conditions to most of the area Wednesday night and again Thursday night. This is likely to include portions of the New Orleans metro area, with potential for hard freeze conditions across SW MS and portions of SE LA near and north of Interstate 12. Wind chill values in the teens and lower 20s are likely across much of the area both Wednesday night and Thursday night. Expectation is that Cold Weather Advisories will be necessary for just about the entire CWA both nights.
SHORT TERM
(This evening through Tuesday night)
Issued at 300 PM CST Mon Feb 17 2025
Upper flow is generally zonal across the southern half of the country this afternoon. At the surface, high pressure extended from the Canadian Prairie Provinces to the lower Mississippi River Valley. Clear skies across the area this afternoon with temperatures generally in the mid and upper 50s.
Tonight will remain mostly clear with surface winds gradually coming around to the east. Temperatures may not be quite as cold as this morning, but won't rule out isolated readings near freezing, especially in the Pascagoula River drainage region in Jackson County.
Isentropic processes will bring a lowering cloud deck to the area during the daytime hours Tuesday, with light rain potentially reaching the surface prior to sunset Tuesday. With the baroclinic zone likely remaining off the Louisiana coastline Tuesday and Tuesday night, a developing surface wave is likely to move eastward along this zone toward the area Tuesday night.
Precipitable water values are expected to increase to the 75th to 90th percentile climatologically (1.25 to 1.6 inches). With the warm, moist air getting advected over the cold airmass, elevated, embedded convection is expected to develop. At this time, it appears that any surface based convection is likely to remain offshore, with the possible exception of lower Plaquemines Parish.
That leaves hail (up to an inch in diameter) as a potential concern. Widespread rain amounts of around 2 inches can be expected from Tuesday evening into Wednesday morning, with a few spot totals in excess of 3 inches. Could be some isolated runoff issues, especially in urban areas, but most areas have seen an inch or less of rain over the last couple weeks. At this time, a Flood Watch is not anticipated.
High temperatures Tuesday are expected to be warmer than today's readings, but are somewhat dependent on how quickly the clouds thicken and lower. A few hours difference in timing could be the difference between highs in the upper 50s and highs in the mid 60s. Temperatures will drop off somewhat Tuesday evening as precipitation onsets, before flattening out until after the passage of the surface wave. Across southern portions of the area near the baroclinic zone, temperatures could even rise a bit after midnight.
LONG TERM
(Wednesday through Sunday night)
Issued at 300 PM CST Mon Feb 17 2025
With the passage of the surface wave to the east of the area Wednesday morning, precipitation will end, and the arctic airmass will arrive. Little, if any, recovery in temperatures is expected during the daytime hours Wednesday, especially if clouds hold in all day as expected. It's entirely possible that the highs for the day could occur before most folks get out of bed Wednesday morning. Sub-freezing temperatures will be likely for most of the area both Thursday and Friday mornings, with hard freeze conditions likely, especially Friday morning, for at least the northern half of the area. It won't be as cold as the January cold wave, but considering the warmth of the last couple weeks, it is going to be a shock to both vegetation, which had already started greening up, and to people. Entirely possible that record lows will be threatened in some areas, especially Friday morning. Wind chill values in the teens and 20s are likely Thursday and Friday mornings. Cold Weather Advisories for much of the area are almost certain to be issued in later forecast packages for those mornings. Sunshine should allow temperatures to moderate somewhat by Friday afternoon.
Another shortwave moving near the Gulf Coast may spread some light precipitation into the area by Saturday afternoon or Saturday night, but temperatures should have moderated sufficiently to eliminate the potential for freezing or frozen precipitation.
Temperature forecast is going to be a battle for the second half of the week. As noted above, we may not see any recovery Wednesday. For Thursday and Friday, current numbers are a blended solution, somewhat toward the non-ECMWF solution, but can't discount those, as there is quite a bit of agreement within the ECMWF ensemble. By Sunday into early next week, temperatures will have moderated to near or above normal.
AVIATION
(18Z TAFS)
Issued at 1138 AM CST Mon Feb 17 2025
VFR conditions expected through the forecast period. Expect to see a mid-level cloud deck move in by late morning Tuesday, with ceilings lowering to perhaps FL050 by late afternoon. Could see some -RA by late afternoon as well, but don't expect any flight restrictions until after sunset Tuesday.
MARINE
Issued at 300 PM CST Mon Feb 17 2025
Wind conditions have relaxed across the waters, but this is only a brief respite. Easterly winds are expected to increase during the day Tuesday, and Small Craft Exercise Caution headlines, and possibly Small Craft Advisories, are likely to be needed by tomorrow afternoon across the western waters.
Mariners should expect a prolonged period of hazardous conditions across most waters from Tuesday afternoon or Tuesday night into at least Friday morning, before there's significant improvement in conditions.
PRELIMINARY POINT TEMPS/POPS
MCB 34 63 41 48 / 0 10 100 20 BTR 39 65 45 53 / 0 20 100 10 ASD 36 64 49 57 / 0 10 100 40 MSY 44 64 51 58 / 0 10 100 40 GPT 38 62 46 57 / 0 10 100 60 PQL 35 65 47 60 / 0 10 100 70
LIX WATCHES/WARNINGS/ADVISORIES
LA...None.
GM...None.
MS...None.
GM...None.
Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS | 19 mi | 51 min | SE 6G | 54°F | 57°F | 30.19 | ||
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS | 22 mi | 51 min | 63°F | |||||
PTBM6 - 8741003 - Petit Bois Island, MS | 25 mi | 51 min | SSW 1.9G | 53°F | 30.21 | |||
GDXM6 - Grand Bay Reserve, MS | 29 mi | 96 min | S 6 | 53°F | 30.24 | 34°F | ||
DILA1 | 47 mi | 51 min | NNE 7G | 51°F | 30.21 | |||
DPHA1 | 47 mi | 81 min | 8 | 49°F | 59°F | 30.21 | ||
SHBL1 - 8761305 - Shell Beach, LA | 48 mi | 51 min | NE 7G | 50°F | 54°F | 30.23 | ||
MBPA1 | 49 mi | 51 min | 54°F | 33°F |
Wind History for Bay Waveland Yacht Club, MS
toggle option: (graph/table)
Airport Reports
Link to 1 hour of 5 minute data for KGPT
Terminal Aerodrome Forecast (TAF) for KGPT
Wind History Graph: GPT
(wind in knots)GEOS Local Image of Southern Mississippi Valley
Edit Hide
Mobile, AL,

NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE