Bay St. Louis, MS Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Bay St. Louis, MS

April 19, 2024 3:36 PM CDT (20:36 UTC) Change Location
Sunrise 6:22 AM   Sunset 7:28 PM
Moonrise 3:54 PM   Moonset 4:19 AM 
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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.

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Marine Forecasts
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GMZ532 Mississippi Sound- 1045 Am Cdt Fri Apr 19 2024

Rest of today - South winds 5 to 10 knots. Waves 1 foot or less, then around 2 feet this afternoon.

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

Saturday - South winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Waves 1 foot or less, then around 2 feet in the afternoon. A slight chance of showers in the afternoon.

Saturday night - Southeast winds 5 to 10 knots, becoming northeast after midnight. Waves 1 foot or less, then around 2 feet after midnight. A slight chance of showers in the evening, then a chance of showers after midnight.

Sunday - North winds 15 to 20 knots with gusts up to 30 knots. Waves 2 to 4 feet. Showers in the morning, then showers likely with a slight chance of Thunderstorms in the afternoon.

Sunday night - North winds 20 to 25 knots with gusts up to 35 knots. Waves 3 to 5 feet. A chance of showers in the evening.

Monday - North winds 20 to 25 knots, diminishing to 10 to 15 knots in the afternoon. Waves 2 to 4 feet.

Monday night - North winds 5 to 10 knots, becoming northeast after midnight. Waves around 2 feet.

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

Tuesday night - Southeast winds 5 to 10 knots. Waves around 2 feet in the evening, then 1 foot or less.
winds and waves higher in and near Thunderstorms.

GMZ500 1045 Am Cdt Fri Apr 19 2024

Synopsis for pascagoula to atchafalaya river out 60 nm -
southeast winds of 5 to 10 knots will persist through Saturday evening, but a cold front will gradually shift winds to the north Saturday night into Sunday. By Sunday night, these northerly winds will strengthen to 15 to 25 knots and then linger into Monday. At least exercise caution, possibly small craft advisory, will be needed. By Monday night, high pressure moving over the waters will allow the winds to relax back to 10 to 15 knots and also shift winds to the northeast and eventually southeast. These southeast winds of 10 to 15 knots will then remain in place into the middle of next week.


7 Day Forecast for Marine Location Near Bay St. Louis, MS
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Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 192025 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 325 PM CDT Fri Apr 19 2024

New SHORT TERM, LONG TERM, AVIATION, MARINE

SHORT TERM
(This evening through Saturday night)
Issued at 323 PM CDT Fri Apr 19 2024

A fairly broad upper level trough is currently moving east through the Great Lakes. The southern side of this feature is relatively flat at this time which is why the associated cold front is struggling to make southward progression. Model soundings show low dewpoint depressions around 500mb and near the surface. That points to continued high level clouds and possibly patchy fog over SELA and southern MS. So should expect another anomalously warm night.
Saturday will be similar to today as the trough continues east of the Great Lakes with the base of the trough still quite flat without much southward movement. The cold front will be basically crawling south into the CWA Saturday. Post frontal showers with maybe a storm or 2 will drift south into the northern half of the local area.
Highs will be limited by slightly cooler air north of the boundary and clouds to the south of it. So a bit more challenging and higher probability of being too cool or warm for forecast highs in the CWA

MEFFER

LONG TERM
(Sunday through Thursday night)
Issued at 323 PM CDT Fri Apr 19 2024

Models show a shortwave on the backside of the northern trough moving on a much farther south trajectory, passing through the mid to lower Mississippi Valley Sunday afternoon. This is what'll be needed to finally drive a cold front completely through the CWA on Sunday morning. Ample moisture in place with lift from the front will be a good setup for increasing showers. Model soundings today compared to previous days show much less instability anywhere through the column. Thus, thinking it'll be fairly tough for much thunder to develop and therefore now only have isolated thunderstorms in the zone forecasts. Overall QPF shouldn't be impactful generally speaking with areal amounts under an inch.
Coverage forecast of 80% could still be too low.

This cold front won't be particularly strong being that a shortwave it driving it, so only looking at a day of below normal temps with moderating conditions quickly returning as well as above normal temps Tuesday onward. Precip forecast next week continues to be on the lower end of confidence as models not doing a great job of resolving weaker troughs that may pass through the midsection of the country. So will just be going with deterministic NBM POPs which with the latest forecast package is on the drier side.

MEFFER

AVIATION
(18Z TAFS)
Issued at 323 PM CDT Fri Apr 19 2024

A mix of MVFR and VFR cigs dominate the short term with most sites becoming VFR as lower cloud decks dissipate around sunset. Later this evening and overnight, cloud decks will lower back to MVFR or IFR with the potential for pockets of light fog. A few terminals may see moderately dense fog at times. Expect conditions to start improving a couple/few hours after sunrise Saturday. Scattered showers may start to develop mid morning Saturday, thus have introduced VCSH on the most recent TAFs sent.

MEFFER

MARINE
Issued at 323 PM CDT Fri Apr 19 2024

A surface high pressure is centered in the western Atlantic and extending across the Gulf of Mexico. The western periphery of this ridge is being broken down by approaching surface trough to the north of the area. That'll result in a weakening of onshore flow with most of the coastal waters becoming light and variable tonight. Current global model runs indicate that a cold front will move through the coast waters Sunday morning. Cold air advection won't be particularly strong with this boundary and thus likely only looking at about 12 to 18 hours of Exercise Caution to low-end Small Craft conditions.

MEFFER

PRELIMINARY POINT TEMPS/POPS
MCB 67 78 52 60 / 10 50 70 70 BTR 71 85 60 66 / 10 20 60 60 ASD 68 84 59 68 / 0 20 50 80 MSY 71 84 64 68 / 0 10 50 80 GPT 68 82 60 68 / 0 20 30 80 PQL 67 84 60 70 / 0 20 20 70

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




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 1 mi49 min S 12G14 83°F 76°F30.01
SHBL1 - 8761305 - Shell Beach, LA 36 mi49 min SSE 8.9G12 80°F 69°F30.04
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 41 mi49 min 72°F
PTBM6 - 8741003 - Petit Bois Island, MS 44 mi49 min S 11G12 76°F 30.04
NWCL1 - 8761927 - New Canal, LA 46 mi49 min NE 8G11 78°F 77°F30.04
GDXM6 - Grand Bay Reserve, MS 48 mi52 min S 8.9 77°F 30.0671°F


Wind History for Bay Waveland Yacht Club, MS
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KHSA STENNIS INTL,MS 8 sm46 minSSE 1110 smPartly Cloudy82°F70°F66%30.02
KGPT GULFPORTBILOXI INTL,MS 15 sm43 minSSE 0910 smClear82°F70°F66%30.03
KMJD PICAYUNE MUNI,MS 21 sm21 minSSW 0910 smA Few Clouds86°F72°F62%30.00
KBIX KEESLER AFB,MS 23 sm41 minS 1210 smClear81°F70°F70%30.01
Link to 5 minute data for KHSA


Wind History from HSA
(wind in knots)
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Tide / Current for Bay St. Louis, Mississippi
   
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Bay St. Louis
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Fri -- 04:19 AM CDT     Moonset
Fri -- 06:25 AM CDT     Sunrise
Fri -- 07:28 AM CDT     0.47 feet Low Tide
Fri -- 03:53 PM CDT     Moonrise
Fri -- 07:27 PM CDT     Sunset
Fri -- 11:42 PM CDT     0.98 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Bay St. Louis, Mississippi, Tide feet
12
am
1.1
1
am
1
2
am
0.9
3
am
0.8
4
am
0.7
5
am
0.6
6
am
0.5
7
am
0.5
8
am
0.5
9
am
0.5
10
am
0.6
11
am
0.6
12
pm
0.7
1
pm
0.7
2
pm
0.8
3
pm
0.8
4
pm
0.8
5
pm
0.8
6
pm
0.8
7
pm
0.8
8
pm
0.9
9
pm
0.9
10
pm
1
11
pm
1



Tide / Current for Cat Island (West Point), Mississippi
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Cat Island (West Point)
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Fri -- 04:19 AM CDT     Moonset
Fri -- 06:22 AM CDT     0.37 feet Low Tide
Fri -- 06:24 AM CDT     Sunrise
Fri -- 03:52 PM CDT     Moonrise
Fri -- 07:27 PM CDT     Sunset
Fri -- 09:05 PM CDT     1.03 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Cat Island (West Point), Mississippi, Tide feet
12
am
0.9
1
am
0.8
2
am
0.7
3
am
0.5
4
am
0.5
5
am
0.4
6
am
0.4
7
am
0.4
8
am
0.4
9
am
0.5
10
am
0.5
11
am
0.6
12
pm
0.6
1
pm
0.6
2
pm
0.7
3
pm
0.7
4
pm
0.8
5
pm
0.8
6
pm
0.9
7
pm
1
8
pm
1
9
pm
1
10
pm
1
11
pm
1




Weather Map
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GEOS Local Image of Southern Mississippi Valley   
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New Orleans/Baton Rouge, LA,



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