Saturday, November28, 2020
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Marine Weather and Tides
St. Martin, MS

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:31AMSunset 4:56PM Saturday November 28, 2020 2:45 AM CST (08:45 UTC) Moonrise 5:03PMMoonset 5:52AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 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- 923 Pm Cst Fri Nov 27 2020
Rest of tonight..North winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Showers late in the evening. Slight chance of showers after midnight.
Saturday..Northeast winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Patchy fog early in the morning. Chance of showers through the day.
Saturday night..Northeast winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers in the evening, then showers after midnight. Patchy fog after midnight.
Sunday..East winds 10 to 15 knots becoming southwest 15 to 20 knots in the late morning and afternoon. Waves 3 to 5 feet. Dominant period 4 seconds. Patchy fog in the morning. Showers until late afternoon. Chance of Thunderstorms through the day. Showers likely late in the afternoon.
Sunday night..Northwest winds 20 to 25 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers in the evening.
Monday..Northwest winds 20 to 25 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Monday night..North winds 20 to 25 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Tuesday..North winds 15 to 20 knots easing to 5 to 10 knots in the afternoon. Waves 2 to 4 feet. Dominant period 4 seconds.
Tuesday night..Northeast winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Wednesday..East winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Wednesday night..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers through the night.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 923 Pm Cst Fri Nov 27 2020
Synopsis..A weak front will push south into the nearshore north gulf waters tonight and remain stationary through Saturday night. A low pressure area is expected to develop along the upper texas and southwest louisiana coast Saturday night and then move east to northeast across the central gulf coast region Sunday. The associated strong cold front will move through the region Sunday afternoon. Cold high pressure will build in its wake early next week.


7 Day Forecast for Marine Location Near St. Martin, MS
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location: 30.41, -88.9     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 280539 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 1139 PM CST Fri Nov 27 2020

SHORT TERM.

Removed mention of thunder overnight for most of CWA as front is pretty much off the coast for now. No changes to later forecast periods.

LONG TERM (Tuesday and beyond).

Tuesday morning will be the coldest morning in a long time across most of the area. Freezes possible, if not likely, north and west of Lake Pontchartrain. High pressure moves from the Texas coast Tuesday morning to off the Atlantic Coast by Thursday night. At that point, models begin to diverge. 18z and 00z GFS solutions emphasize northern stream shortwave at the end of next week, while the 12z ECMWF emphasizes southern stream shortwave. While both models return moisture to the area Wednesday night and Thursday, with an attendant chance of precipitation, the GFS solution would start it about 12 hours earlier. In addition, the ECMWF solution would develop a significant surface low over the Gulf in our coastal waters as the northern and southern streams phase, strengthening the surface low it as it heads toward the Florida Panhandle Friday. The GFS is basically an inverted trough with surface pressures at least 10 mb higher.

Will take the middle ground on timing with no mention of precipitation until Wednesday night, mainly after midnight. Would note that if 12z ECMWF scenario becomes the preferred solution, PoPs and winds from Wednesday night onward would need to be bumped up significantly from current levels.

Only real disagreement on temperatures through Friday will be for Thursday and Thursday night, which can be attributed to the vastly different surface patterns. Current forecast is in between the 2 solutions, so we can go either way depending on favored solution in later packages. 35

AVIATION (06z TAF Package).

Most terminals running MVFR to VFR this evening as main convection has moved offshore. Still some elevated precipitation across northwest half of area and no indications of any lightning involved with this. Starting to see IFR ceilings sinking southward across KMCB, and will probably reach KBTR/KHDC/KASD by about 09z. Will be cutting way back on mention of precipitation in TAF set until at least 00z Sunday, and maybe even closer to 06z. Based on 00z MOS guidance from NAM and GFS, won't carry TSRA at any terminal for now. Morning IFR conditions should improve to MVFR and potentially VFR prior to 18z. Conditions will again deteriorate from the west as we approach 06z Sunday, likely to upper end IFR. 35

PRELIMINARY POINT TEMPS/POPS. MCB 61 69 58 69 / 80 20 90 90 BTR 62 69 60 71 / 80 40 90 90 ASD 62 71 59 73 / 80 30 80 90 MSY 65 70 64 73 / 80 40 80 80 GPT 64 71 61 72 / 90 30 80 90 PQL 62 73 59 74 / 90 20 70 90

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 WavesPressureDewPt
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 18 mi64 min 69°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 23 mi64 min N 1.9 G 4.1 71°F 67°F1016.6 hPa
PTBM6 - 8741003 - Petit Bois Island, MS 25 mi58 min W 4.1 G 4.1 69°F 1016.5 hPa
MBPA1 44 mi58 min 67°F 67°F
DPIA1 - Dauphin Island, AL 45 mi46 min N 1.9 G 1.9 68°F 1016.2 hPa (-1.0)
MBLA1 - Middle Bay Light, AL 47 mi46 min Calm 67°F 1015.6 hPa (-1.4)
FMOA1 - 8734673 - Fort Morgan, AL 48 mi58 min NNE 1.9 G 1.9 68°F 1016 hPa
MCGA1 - 8736897 - Coast Guard Sector Mobile, AL 48 mi58 min N 6 G 7 67°F 67°F1015.5 hPa
PTOA1 49 mi58 min 67°F 66°F

Wind History for West Pier, Port of Gulfport, MS
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Keesler Air Force Base / Biloxi, MS2 mi50 minN 310.00 miOvercast67°F66°F100%1016.5 hPa
Gulfport - Gulfport-Biloxi International Airport, MS9 mi53 minN 710.00 miOvercast68°F64°F90%1016.2 hPa
Moss Point - Trent Lott International Airport, MS20 mi53 minNNW 60.75 miFog/Mist69°F66°F90%1016.4 hPa

Link to 5 minute data for KBIX

Wind History from BIX (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmNE3E3SE5SE3S6S6S6S4SE5SE3E3SE5W5CalmCalmCalmSE3CalmN3
1 day agoSW5SW5CalmCalmCalmCalmCalmNE4NE4NE5NE4----NE3E5E6E5NW6S3CalmCalmCalmCalmCalm
2 days agoS8S9S5S4CalmS6S10S7S7S7S9
G17
S10S8S10S7SW7W4SW3S5S8SW9S10S7SW4

Tide / Current Tables for Biloxi, Biloxi Bay, Mississippi
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Biloxi
Click for Map
Sat -- 04:51 AM CST     Moonset
Sat -- 06:32 AM CST     Sunrise
Sat -- 07:02 AM CST     -0.02 feet Low Tide
Sat -- 04:01 PM CST     Moonrise
Sat -- 04:54 PM CST     Sunset
Sat -- 08:56 PM CST     1.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.20.90.70.50.30.10-000.10.20.30.40.60.80.91.11.31.51.61.71.71.71.6

Tide / Current Tables for Gulfport, Gulfport Harbor, Mississippi
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Gulfport
Click for Map
Sat -- 04:52 AM CST     Moonset
Sat -- 06:02 AM CST     0.27 feet Low Tide
Sat -- 06:33 AM CST     Sunrise
Sat -- 04:02 PM CST     Moonrise
Sat -- 04:55 PM CST     Sunset
Sat -- 09:30 PM CST     1.67 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.10.90.70.40.30.30.30.40.50.50.60.70.80.90.911.11.21.41.61.71.71.6

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
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 numerous 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.