Long Beach, MS Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Long Beach, MS

April 21, 2024 8:00 AM CDT (13:00 UTC) Change Location
Sunrise 6:20 AM   Sunset 7:29 PM
Moonrise 5:40 PM   Moonset 5:10 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- 330 Am Cdt Sun Apr 21 2024

.small craft exercise caution in effect through this evening - .

.small craft advisory in effect from this evening through Monday morning - .

Today - North winds 10 to 15 knots, increasing to 15 to 20 knots late this morning and afternoon. Waves 2 to 4 feet. A chance of showers early this morning, then showers likely late this morning. A slight chance of showers early this afternoon.

Tonight - North winds 15 to 20 knots with gusts up to 25 knots. Waves 3 to 4 feet.

Monday - North winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots in the afternoon. Waves 2 to 4 feet.

Monday night - Northeast winds 5 to 10 knots. Waves 1 foot or less, then around 2 feet after midnight.

Tuesday - East winds 5 to 10 knots, becoming southeast in the afternoon. Waves around 2 feet.

Tuesday night - South winds 5 to 10 knots, becoming southwest after midnight. Waves around 2 feet in the evening, then 1 foot or less.

Wednesday - Northeast winds 5 to 10 knots, becoming southeast in the afternoon. Waves 1 foot or less.

Wednesday night - South winds 5 to 10 knots. Waves 1 foot or less.

Thursday - Northeast winds 5 to 10 knots, becoming southeast in the afternoon. Waves 1 foot or less, then around 2 feet in the afternoon.

Thursday night - South winds 5 to 10 knots. Waves around 2 feet.

GMZ500 330 Am Cdt Sun Apr 21 2024

Synopsis for pascagoula to atchafalaya river out 60 nm -
a cold front will continue to push through the coastal waters today. Northerly winds will strengthen behind the front to 15 to 25 knots and then continue into Monday. 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 Long Beach, MS
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Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 211131 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 631 AM CDT Sun Apr 21 2024

New AVIATION

SHORT TERM
(Today through Tuesday night)
Issued at 323 AM CDT Sun Apr 21 2024

A fast moving positively tilted shortwave trough axis will continue to sweep through the region this morning. Further down toward the surface, a cold front is quickly transiting south and east across the coastal waters and will be in the offshore waters by late morning. In the mid-levels, a more west-southwest flow regime will continue to induce isentropic forcing over the shallow cold pool near the surface. This mid-level forcing will combine with the strong upper level forcing from the trough axis to produce scattered to numerous showers over most of the forecast area through the morning hours. Only areas along the immediate coast of Louisiana and in the offshore waters will see sufficient instability to produce widely scattered thunderstorm activity this morning. As the shortwave trough axis shifts to the east this afternoon and evening, increasing negative vorticity advection and subsidence will allow skies to clear from northwest to southeast.
By late this evening, dry conditions and mainly clear skies are expected to be in place. Temperatures will be substantially colder as a 925mb thermal trough axis slides through the region with highs only warming into the 60s this afternoon. Lows will cool into the low to mid 40s north of the 10/12 corridor and the upper 40s and lower 50s south of the 10/12 corridor.

Deep layer northwest flow in the mid and upper levels will dominate the Gulf South tomorrow and Tuesday, and this will keep a cool and dry airmass in place. Highs will recover slightly due to greater solar insolation, but readings will still be below average in the lower 70s tomorrow. Tomorrow night will see strong radiational cooling occur as conditions remain clear and dry. Lows will fall back into the low to mid 40s north of the 10/12 corridor and the upper 40s and lower 50s further to the south. By Tuesday, a surface high will transition to the east of the area, and this will allow for return flow off the Gulf to take hold. Dewpoints will gradually begin to rise and this will allow lows on Tuesday night to be a good 10 degrees warmer than those seen Monday night.
Daytime highs will also continue to modify beneath mainly clear skies with readings climbing back to more normal levels in the mid to upper 70s.

LONG TERM
(Wednesday through Saturday)
Issued at 323 AM CDT Sun Apr 21 2024

A very persistent longwave ridge axis will move into the Gulf South on Wednesday and remain in place through Saturday. This strong ridging aloft will induce a strong mid-level capping inversion that will effectively kill any rain chances in the extended period even as dewpoints rise into the 60s on the back of sustained onshore flow in the low levels. At most, some fair weather cumulus development will be possible each day. Conditions still look favorable for some radiation fog to form late Wednesday night into Thursday morning, but boundary layer flow should increase above favorable limits by Thursday and Friday nights. Instead, rounds of low stratus will form on Thursday and Friday nights before mixing out into the scattered cumulus field by the afternoon. In terms of temperatures, strong deep layer subsidence will favor warmer daytime highs through the extended period. Highs will start off in the upper 70s and lower 80s on Wednesday, but will increase into the mid to upper 80s by Friday and Saturday. Lows will also warm from the upper 50s and lower 60s Wednesday night into the upper 60s and lower 70s by Friday night as dewpoints continue to rise.

AVIATION
(12Z TAFS)
Issued at 627 AM CDT Sun Apr 21 2024

Upstream observations indicate that an area of low stratus producing a mix of IFR and MVFR ceilings ranging from 500 to 1500 feet will impact all of the terminals between 12z and 18z this morning. This low stratus deck is associated with a 925mb thermal trough axis advecting into the region. After 18z, increased dry air advection into the area will begin to lift the stratus deck above 2000 feet and eventually above 3000 feet and into VFR range by 00z. Winds will be gusty at 10 to 15 knots from the north today at all of the terminals. Tonight, winds will further increase from the north at NEW as the cold pool moves over the warm lake waters with sustained winds of 15 to 20 knots and gusts up to 25 knots expected through the end of the TAF cycle. PG

AVIATION
(06Z TAFS)
Issued at 323 AM CDT Sun Apr 21 2024

Frontal boundary has crossed southern terminals with winds now prevailing out of the north at around 10 knots. Some gusts upwards of 20 knots will be possible later this morning into early afternoon. MVFR CIGs are gradually building in, IFR likely for most sites over the coming hours as -RA enters the area. Some TSRA impacts are now expected to cross areas just north of BTR and impact MCB by 0630 UTC. Some TS impacts cannot be ruled out elsewhere overnight, but should be intermittent and limited. RA will gradually wane through late morning and CIGs will improve into the early afternoon. VFR conditions expected to prevail at all terminals by 00 UTC Sunday evening.

MARINE
Issued at 323 AM CDT Sun Apr 21 2024

Colder air moving into the area behind a front will support stronger offshore flow of 15 to 25 knots today into tonight. Seas will respond to these stronger winds and will increase to 3 to 5 feet over the open waters by tonight. As high pressure begins to build over the waters tomorrow, winds will gradually relax below 15 knots and also turn more easterly. By Tuesday, the surface high will be positioned over the eastern Gulf, and this will allow for a persistent onshore flow pattern to take hold. Onshore winds of 10 to 15 knots are expected on Tuesday and Wednesday, but a slight tightening of the pressure gradient in response to a low in Texas on Thursday and Friday should push winds back into exercise caution levels of 15 to 20 knots. Seas will respond and increase from 1 to 2 feet to 2 to 4 feet by the end of the week.

PRELIMINARY POINT TEMPS/POPS
MCB 65 43 70 43 / 20 0 0 0 BTR 68 47 72 48 / 50 0 0 0 ASD 69 47 73 46 / 30 0 0 0 MSY 69 55 72 56 / 50 0 0 0 GPT 69 49 73 52 / 30 0 0 0 PQL 68 48 73 45 / 20 0 0 0

LIX WATCHES/WARNINGS/ADVISORIES
LA...None.
GM...Small Craft Advisory from 7 PM this evening to 10 AM CDT Monday for GMZ530-532-534-536-538-550-552-555-557-570-572-575-577.

MS...None.
GM...Small Craft Advisory from 7 PM this evening to 10 AM CDT Monday for GMZ532-534-536-538-550-552-555-557-570-572-575-577.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 10 mi42 min E 5.1G8 76°F29.96
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 31 mi42 min 74°F
PTBM6 - 8741003 - Petit Bois Island, MS 34 mi42 min NNE 8G9.9 29.97
GDXM6 - Grand Bay Reserve, MS 38 mi75 min N 2.9 61°F 30.0157°F
SHBL1 - 8761305 - Shell Beach, LA 42 mi42 min NE 8.9G11 69°F30.01


Wind History for Bay Waveland Yacht Club, MS
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KGPT GULFPORTBILOXI INTL,MS 7 sm67 minNNW 0510 smMostly Cloudy61°F55°F82%29.98
KBIX KEESLER AFB,MS 13 sm65 minENE 0510 smMostly Cloudy61°F55°F82%29.95
KHSA STENNIS INTL,MS 17 sm35 minNNW 1410 smMostly Cloudy59°F55°F88%30.04
Link to 5 minute data for KGPT


Wind History from GPT
(wind in knots)
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Tide / Current for Gulfport, Gulfport Harbor, Mississippi
   
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Gulfport
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Sun -- 05:09 AM CDT     Moonset
Sun -- 05:41 AM CDT     0.75 feet Low Tide
Sun -- 06:22 AM CDT     Sunrise
Sun -- 11:31 AM CDT     1.08 feet High Tide
Sun -- 05:38 PM CDT     Moonrise
Sun -- 06:08 PM CDT     0.55 feet Low Tide
Sun -- 07:28 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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



Tide / Current for Cat Island (West Point), Mississippi
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Cat Island (West Point)
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Sun -- 04:41 AM CDT     0.76 feet Low Tide
Sun -- 05:10 AM CDT     Moonset
Sun -- 06:22 AM CDT     Sunrise
Sun -- 09:54 AM CDT     0.96 feet High Tide
Sun -- 05:39 PM CDT     Moonrise
Sun -- 07:05 PM CDT     0.39 feet Low Tide
Sun -- 07:28 PM CDT     Sunset
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
0.8
1
am
0.8
2
am
0.8
3
am
0.8
4
am
0.8
5
am
0.8
6
am
0.8
7
am
0.8
8
am
0.9
9
am
0.9
10
am
1
11
am
0.9
12
pm
0.9
1
pm
0.8
2
pm
0.7
3
pm
0.6
4
pm
0.5
5
pm
0.5
6
pm
0.4
7
pm
0.4
8
pm
0.4
9
pm
0.5
10
pm
0.5
11
pm
0.6




Weather Map
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GEOS Local Image of Southern Mississippi Valley   
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