Saturday, January23, 2021
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Marine Weather and Tides
Ocean Springs, 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 6:49AMSunset 5:25PM Saturday January 23, 2021 11:26 AM CST (17:26 UTC) Moonrise 2:09PMMoonset 3:23AM Illumination 78% Phase: Waxing Gibbous; Moon at 10 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- 924 Am Cst Sat Jan 23 2021
Rest of today..East winds 10 to 15 knots. Waves less than 1 foot building to 2 to 4 feet. Dominant period 4 seconds. Patchy fog late in the morning. Slight chance of showers in the late morning and early afternoon.
Tonight..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Sunday..Southeast winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Patchy fog early in the afternoon.
Sunday night..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Monday..South winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and slight chance of Thunderstorms in the afternoon.
Monday night..Southwest winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Slight chance of Thunderstorms in the evening. Chance of showers through the night.
Tuesday..West winds 5 to 10 knots becoming east in the afternoon. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and slight chance of Thunderstorms in the afternoon.
Tuesday night..Southeast winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers in the evening. Slight chance of Thunderstorms through the night. Showers likely after midnight.
Wednesday..West winds 10 to 15 knots. Waves 1 to 2 feet. Showers likely in the morning. Slight chance of Thunderstorms through the day. Chance of showers in the afternoon.
Wednesday night..North winds 10 to 15 knots. Waves 2 to 4 feet. Slight chance of showers in the evening.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 924 Am Cst Sat Jan 23 2021
Synopsis..A stalled frontal boundary across nearshore coastal waters will move back to the north as a warm front Sunday. Another cold front will move into the northern gulf Monday night or Tuesday.


7 Day Forecast for Marine Location Near Ocean Springs, MS
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location: 30.39, -88.8     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 231010 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 410 AM CST Sat Jan 23 2021

SYNOPSIS.

At 3 AM CST, frontal boundary was riding along the outer edge of our coastal waters. Aloft, a shear axis, remnants of yesterday's trough, was stretched east-west along Interstate 20 with shortwave ridging building over Texas. Upper low was located near Reno with a couple of spokes of energy rotating around it.

Locally, east to northeast winds across the area, with patchy light rain south of a Gulfport to New Orleans to Houma line. A few patches of sea fog, perhaps, but most visibility reductions over land are due to precipitation. Temperatures ranging from the mid 50s to lower 60s.

SHORT TERM (through Monday night).

Shear axis should pull east of the area this morning, taking much of the rain with it, possibly even before sunrise. Shortwave ridging over Texas builds into the area over the next 24 hours or so, but moisture trapped under the frontal inversion never really gets scoured out today. In fact, it's entirely possible that the sun remains missing in action through Monday. Next upper impulse currently out west lifts from New Mexico Sunday evening to near Chicago Monday night (ECMWF/NAM) or Tuesday morning (GFS).

This will gradually turn boundary layer flow onshore by Sunday afternoon, and moreso on Monday. Can't rule out a few low topped showers or patchy drizzle from moisture trapped under the inversion between now and Monday morning. With the low level flow turning onshore as the shortwave approaches, the current stationary front will move northward Sunday, and be north of the area by late afternoon. As the warm front moves north of the area, the onshore flow is also likely to promote the development of sea fog Sunday night as dew points in the mid 60s will be getting transported over water that's 5-10 degrees cooler than that over a good part of the nearshore waters. Would note that the Mississippi River water temperatures are in the mid 40s, so fog could get especially dense near the mouth of the river.

The front associated with the shortwave will move into the area Monday night in a much weakened state. Scattered to numerous showers in advance of the front. GFSBufr forecast soundings indicate at least some potential for thunder by afternoon or early evening.

Regarding temperatures, don't expect a lot of movement in temperatures from current levels today and only a minor drop tonight. May take a good bit of the day Sunday to get firmly in the warm sector, with highs (about 10 degrees warmer than today) potentially occurring just before sunset. If warm frontal movement is slower than expected, Sunday highs will need to be lowered. On Monday, the only question is whether we get significant breaks in the cloud cover. If we do, soundings would support temperatures getting perhaps into the lower 80s, which would be near or above record levels. Haven't gone that warm, as operational guidance and blends are mainly in the upper 70s. Just something to watch. 35

LONG TERM (Tuesday through Friday).

Closed deep trough over the Four Corners area Tuesday morning will move east into the South Central Plains by Wednesday afternoon and to near Washington DC on Thursday. This will return the threat of scattered showers and isolated storms to the area late Tuesday night and Wednesday. High pressure will build in on Thursday behind the front.

The Monday night/Tuesday morning frontal passage is trailed by an airmass of Pacific origin, so there really isn't much cooling for Tuesday and Wednesday. Not a lot of spread in guidance temperatures, remaining well above normal (10-15F on highs, 15-20F on lows) through Wednesday. Behind the Wednesday front, more seasonable temperatures for Thursday and Friday before the ridging shifts east with above normal temperatures returning. 35

AVIATION (valid through 18z Sunday).

IFR or lower ceilings are expected to be common across most terminals into at least Sunday morning. Once the rain departs in the next few hours, visibilities will be somewhat more tolerable in the short term. Will need to monitor coastal terminals for reduced visibilities in sea fog late in the forecast period. 35

MARINE.

Don't have much "ground truth" to say one way or the other on current Fog Advisory, so will allow it to expire at 12z this morning. Will raise Small Craft Exercise Caution headlines for the daytime hours for Chandeleur/Breton Sounds and the eastern open waters, per wind forecast. Beyond today, main concerns will be potential for sea fog, potentially as early as Sunday afternoon, but higher confidence for Sunday night into Monday. Will also likely need Exercise Caution headlines for much of the waters as well on Monday. Conditions should relax behind the front on Tuesday. 35

PRELIMINARY POINT TEMPS/POPS. MCB 61 53 71 61 / 10 10 30 20 BTR 63 56 75 64 / 20 10 20 10 ASD 63 54 72 59 / 30 10 10 10 MSY 63 56 73 64 / 20 10 10 10 GPT 63 54 68 60 / 20 10 10 10 PQL 63 53 70 59 / 20 10 20 10

LIX WATCHES/WARNINGS/ADVISORIES. LA . None. GM . Dense Fog Advisory until 6 AM CST early this morning for GMZ550- 552.

MS . None. GM . Dense Fog Advisory until 6 AM CST early this morning for GMZ552.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 13 mi56 min 56°F
PTBM6 - 8741003 - Petit Bois Island, MS 20 mi56 min ENE 12 G 16 58°F 1021 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 28 mi56 min E 11 G 14 63°F 59°F
MBPA1 39 mi56 min 59°F 53°F
DPIA1 - Dauphin Island, AL 40 mi86 min ENE 11 G 13 58°F 1021 hPa (+1.4)
FMOA1 - 8734673 - Fort Morgan, AL 43 mi56 min E 15 G 18 59°F 1020.9 hPa
MCGA1 - 8736897 - Coast Guard Sector Mobile, AL 43 mi56 min ENE 6 G 8.9 58°F 57°F1020.8 hPa
PTOA1 45 mi56 min 60°F 47°F
OBLA1 - 8737048 - Mobile State Docks, AL 46 mi56 min 61°F 53°F1021.6 hPa

Wind History for Dock C, Port of Pascagoula, MS
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gulfport - Gulfport-Biloxi International Airport, MS14 mi33 minE 810.00 miOvercast61°F54°F78%1020.5 hPa
Moss Point - Trent Lott International Airport, MS15 mi33 minENE 910.00 miMostly Cloudy65°F51°F61%1020.9 hPa

Link to 5 minute data for KBIX

Wind History from BIX (wind in knots)
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Last 24hrS8SE6SE5CalmCalmCalmCalmNE3CalmCalmCalmCalmCalmCalmCalmCalmCalmN3NE7NE14NE8NE6CalmCalm
1 day agoS7S9S6S4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE3NE3CalmSE3CalmS5S8S7S8S9
2 days agoSW11SW12SW10W9W6W4W5SW6W4W3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS4CalmS5S7

Tide / Current Tables for Biloxi, Biloxi Bay, Mississippi
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Biloxi
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Sat -- 02:22 AM CST     Moonset
Sat -- 05:13 AM CST     -0.52 feet Low Tide
Sat -- 06:50 AM CST     Sunrise
Sat -- 01:08 PM CST     Moonrise
Sat -- 05:24 PM CST     Sunset
Sat -- 06:36 PM CST     1.38 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Pascagoula River entrance, Mississippi
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Pascagoula River entrance
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Sat -- 02:21 AM CST     Moonset
Sat -- 04:51 AM CST     -0.45 feet Low Tide
Sat -- 06:49 AM CST     Sunrise
Sat -- 01:07 PM CST     Moonrise
Sat -- 05:23 PM CST     Sunset
Sat -- 07:08 PM CST     1.19 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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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.
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Gulf Stream Current



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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.