Saturday, December7, 2019
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Marine Weather and Tides
Long Beach, MS

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:38AMSunset 4:56PM Saturday December 7, 2019 5:20 PM CST (23:20 UTC) Moonrise 3:18PMMoonset 3:13AM Illumination 84% Phase: Waxing Gibbous; Moon at 11 days in cycle
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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GMZ532 Mississippi Sound- 319 Pm Cst Sat Dec 7 2019
Tonight..Northeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Sunday..East winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of sprinkles early in the morning. Slight chance of showers late in the morning.
Sunday night..South winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Monday..South winds 5 to 10 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Monday night..Southwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers after midnight.
Tuesday..Southwest winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers in the morning, then showers in the afternoon.
Tuesday night..Northeast winds 15 to 20 knots. Waves 3 to 5 feet with occasional waves to 6 feet. Dominant period 4 seconds. Chance of showers.
Wednesday..Northeast winds 15 to 20 knots. Waves 3 to 6 feet subsiding to 2 to 4 feet. Dominant period 4 seconds. Chance of showers.
Wednesday night..Northeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Slight chance of showers through the night.
Thursday..Northeast winds 15 to 20 knots. Waves 3 to 5 feet. Slight chance of showers.
Thursday night..Northeast winds 15 to 20 knots. Waves 3 to 5 feet. Chance of showers.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 319 Pm Cst Sat Dec 7 2019
Synopsis..High pressure will settle over the north central gulf through Sunday. Another cold front will move through the coastal waters late Tuesday.


7 Day Forecast for Marine Location Near Long Beach, MS
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location: 30.32, -89.14     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 072201 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 401 PM CST Sat Dec 7 2019

SHORT TERM. Large extensive stratus deck situated over the Lower Mississippi Valley across the central gulf coast region today will likely remain in place overnight with some breaks at times, but not fully clearing out. Winds remain essentially offshore oriented to preclude advective fog formation but some patchy light radiational fog may develop in places where cloud cover thins enough. Surface high pressure over the southern states moves to the Mid-Atlantic states with a slow transition to onshore flow by Sunday night into Monday. A relatively mild day in store Sunday with some warming heading into Monday. There may be a better shot at coastal sea fog Sunday night into Monday.

LONG TERM. The main concerns will evolve around approaching modified arctic cold front early next week. The models are quite different in timing features, with the ECMWF being a bit more progressive with the surface front moving through by early Tuesday morning, then an open wave impulse moving over the area on the southern branch over the cold air for a wet Tuesday. The GFS shows a slower and more concerning scenario with frontal passage Tuesday afternoon, then a deeper negative tilt low pressure system moving over the top Wednesday. This would place a divergent V structure over the area extending from surface low in the coastal waters Wednesday into and over the cold air for warm trowal aligned into a deformation zone. All this meteorology typically leads to a much wetter and widespread heavy rainfall pattern - a la Maddox synoptic theory. We reviewed average recurrence intevals over various rainfall durations and the GFS is the only model solution that shows a heavy rain threat. The other models remain more progressive and less conducive. We will continue to monitor model consistency Sunday and may have to start highlighting this threat should model runs come into consensus. At this time, will just mention here and show decent PoPs for Wednesday on moderate over-running rainfall in the products. More on this tomorrow. Meanwhile, temperatures should be tempered by extensive cloud cover to keep cooling above freezing across the area, though the entire period will remain cool Wednesday through next weekend.

AVIATION. Extensive stratocumulus deck over region to maintain MVFR ceilings at all terminals next 24-30 hours, briefing breaking to SCT-BKN025-035 at times. Fog formation should not be too widespread, but patchy fog may result in MVFR visibility at a few locations around daybreak, and possibly better coverage Sunday night as flow veers to E-SE flow heading into Monday.

MARINE. Light winds and low seas tonight and Sunday will veer to onshore orientation Sunday night and increasing to moderate onshore flow Monday into early Tuesday ahead of cold front. Frontal passage expected to enter the north gulf during the day Tuesday. Strong cold air advection will bring Small Craft Advisory level winds and seas later Tuesday and Wednesday. Gulf low is likely to develop in the north gulf Wednesday to enhance wind and possibly bring some stormy conditions over the open waters before moving east Wednesday evening.

DECISION SUPPORT. DSS code: Blue. Deployed: None. Activation: None. Activities: Forecast support to City of New Orleans

PRELIMINARY POINT TEMPS/POPS. MCB 47 70 53 73 / 0 10 0 20 BTR 46 71 54 76 / 0 0 0 20 ASD 47 71 51 76 / 0 10 0 10 MSY 52 69 56 76 / 0 0 0 10 GPT 51 68 54 71 / 0 10 0 0 PQL 50 72 53 75 / 0 30 10 10

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

24/RR


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 10 mi51 min N 13 G 14
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 31 mi57 min 64°F
PTBM6 - 8741003 - Petit Bois Island, MS 34 mi57 min N 14 G 16 59°F 1021.6 hPa
42067 - USM3M02 35 mi81 min N 12 G 16 60°F 2 ft1021 hPa (-0.3)
GDXM6 - Grand Bay Reserve, MS 38 mi96 min N 9.9 60°F 1023 hPa53°F
SHBL1 - 8761305 - Shell Beach, LA 42 mi57 min N 6 G 7 60°F 64°F1022.2 hPa
KATA1 - Katrina Cut, AL 49 mi81 min NNE 11 59°F 1022 hPa (+0.3)

Wind History for West Pier, Port of Gulfport, MS
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gulfport - Gulfport-Biloxi International Airport, MS7 mi28 minN 510.00 miOvercast58°F50°F75%1022.1 hPa
Keesler Air Force Base / Biloxi, MS14 mi85 minNNE 710.00 miOvercast58°F51°F78%1022.3 hPa
Bay St. Louis, Stennis International Airport, MS17 mi29 minN 1010.00 miOvercast57°F50°F77%1022.3 hPa

Link to 5 minute data for KGPT

Wind History from GPT (wind in knots)
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Last 24hrCalmCalmCalmN5NE5N9N6N7N7N7N10N11N6N7N9N9N7N9N7N8NE9N9N10N5
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE4S6SE8S6S5S4S5S4S3
2 days agoCalmCalmCalmNW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE6E5SE6SE6S9S8SE8S4

Tide / Current Tables for Gulfport, Gulfport Harbor, Mississippi
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Gulfport
Click for Map
Sat -- 02:13 AM CST     Moonset
Sat -- 06:39 AM CST     Sunrise
Sat -- 06:54 AM CST     0.76 feet Low Tide
Sat -- 10:11 AM CST     0.82 feet High Tide
Sat -- 01:26 PM CST     0.74 feet Low Tide
Sat -- 02:17 PM CST     Moonrise
Sat -- 04:55 PM CST     Sunset
Sat -- 09:27 PM CST     1.30 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.90.90.80.80.80.80.80.80.80.80.80.80.70.70.80.911.11.21.31.31.31.2

Tide / Current Tables for Cat Island (West Point), Mississippi
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Cat Island (West Point)
Click for Map
Sat -- 02:13 AM CST     Moonset
Sat -- 06:39 AM CST     Sunrise
Sat -- 06:45 AM CST     0.41 feet Low Tide
Sat -- 02:18 PM CST     Moonrise
Sat -- 04:56 PM CST     Sunset
Sat -- 07:55 PM CST     1.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.70.60.50.50.40.40.40.40.40.40.50.50.50.60.70.80.911.11.11.110.9

Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New Orleans/Baton Rouge, LA (18,4,5,8)
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Ground Weather Radar Station Mobile, AL
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weather_mapweather_map weather_map

Gulf Stream Current


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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.