Monday, June21, 2021
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Marine Weather and Tides
St. Martin, MS

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 5:52AMSunset 8:02PM Monday June 21, 2021 3:00 AM CDT (08:00 UTC) Moonrise 4:49PMMoonset 3:07AM Illumination 86% 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- 1022 Pm Cdt Sun Jun 20 2021
Rest of tonight..Southwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday..South winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Showers likely and chance of Thunderstorms in the morning, then showers and Thunderstorms in the afternoon.
Monday night..Southwest winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Showers and Thunderstorms likely in the evening, then showers and chance of Thunderstorms after midnight.
Tuesday..Southwest winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds. Thunderstorms likely in the morning. Showers through the day. Thunderstorms in the afternoon.
Tuesday night..Southwest winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Thunderstorms likely early in the evening. Showers likely through the night. Chance of Thunderstorms in the late evening.
Wednesday..South winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of Thunderstorms early in the morning. Showers likely through the day. Thunderstorms likely in the late morning and afternoon.
Wednesday night..Southwest winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Thursday..South winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers in the morning. Chance of Thunderstorms through the day. Showers likely in the afternoon.
Thursday night..South winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms after midnight.
Friday..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Waves or seas building to 1 to 3 feet. Dominant period 4 seconds in the afternoon. Chance of showers and Thunderstorms.
Friday night..South winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms after midnight.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1022 Pm Cdt Sun Jun 20 2021
Synopsis..Upper level shortwave trough is expected to move through the area tomorrow, followed by a cold front on Tuesday.


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 210445 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 1145 PM CDT Sun Jun 20 2021

AVIATION (Valid through 12z Tuesday). Expect showers and storms to begin spreading inland around or shortly after sunrise with scattered to numerous showers and storms during the afternoon hours. Most terminals will likely see at least one round of passing storms, and have tried to highlight the most likely timing using TEMPO groups. Even after sunset, expect isolated to scattered showers and storms as a weak boundary sinks into the area. Will maintain vicinity showers after sunset at all terminals for now, but may need to include tempo or prevailing showers or thunderstorms as confidence in timing increases.

PREV DISCUSSION. /issued 331 PM CDT Sun Jun 20 2021/

SHORT TERM . Tonight through Wednesday . Tonight, as daytime heating disappears, the showers and storms that we are experiencing will diminish and rain chances overnight are expected to be low.

Monday, a lingering boundary off the marine waters will cause enhanced rain chances, especially along the coastal areas. PW values are hovering around 2, which is at the 90th percentile for the SPC sounding climatology. Upper level divergence, especially during the afternoon hours, will help to enhance the lifting and buoyancy in the environment. Southerly surface winds will help to enhance moisture and warm air advection into the atmosphere, which will enhance instability. As a result of these factors, there will be the potential for heavy rainfall where this boundary sets up tomorrow afternoon. Currently based on the model consensus, the location with the biggest potential for rainfall will be along the LA and MS coastal areas. There will also be the risk of some gusty winds and frequent lightning. Waterspouts will be possible as well.

Tuesday, an upper level trough is expected to move through the area and linger over the region, enhancing rain chances. PW values are above the 90th percentile for the sounding climatology. Upper level divergence is present in the models, mainly during the morning hours, which will enhance any buoyancy and efficiency of rainfall in the atmosphere. Southerly surface winds will continue to enhance moisture and warm air advection into the area, which will increase lifting into the environment. So, there will be a potential for heavy rainfall on Tuesday as well as this system moves through and lingers over our area. Lightning will be a concern as well.

Wednesday, the lingering boundary will refire during the daytime, increasing rain chances for the area, especially along the coastal LA and MS areas. Southerly surface winds will help to enhance the instability in the environment. PW values will still be around the 90th percentile for the SPC sounding climatology. Looking at the models, it does not look like Wednesday will have as efficient rainfall as the previous 2 days. However some showers and thunderstorms will be possible along that boundary, mainly during the peak afternoon daytime heating hours.

LONG TERM . Thursday through Sunday . Thursday, the lingering boundary from the upper level trough is still expected to hang around our area and enhance the rainfall chances. Southerly surface winds will help to enhance lifting and moisture advection into the area. PW values are expected to be near the 90th percentile for the SPC sounding climatology. Upper level divergence is forecast in the models, especially during the daytime hours, which will help enhance the buoyancy in the environment. Given these parameters, a heavy rainfall threat may be possible Thursday as well while this boundary still lingers over our area. This rainfall will once again have the chance to be a bit more efficient with higher rainfall rates, like Monday and Tuesday. Lightning will also be a threat on Thursday as well.

Friday, the boundary is still lingering over the area, but is much more diminished in scope and strength. Southerly surface winds will still help some of the moisture advection, but the rainfall does not look like it will be as efficient, based on the models. Some showers will be possible along the boundary during the peak daytime heating hours. And some lightning will be possible inside thunderstorm development.

Saturday and Sunday, we develop more of our typical summertime afternoon thunderstorm regime. Southerly surface flow from the Gulf will help to enhance the moisture advection into the area. And PW values will be around the 90th percentile for the SPC sounding climatology. So some thunderstorms will be possible Saturday and Sunday, mainly during peak daytime heating hours. Lightning will be possible inside thunderstorm development.

MARINE . Tonight, winds will be moderate (<15 knots) and southerly. Monday through Tuesday will be southerly and strong (15-20 knots). Wednesday through Monday, winds will be moderate (<15 knots) and southerly to southeasterly. Wave heights will correspond with the wind speeds.

PRELIMINARY POINT TEMPS/POPS. MCB 72 86 72 83 / 30 90 90 90 BTR 74 86 73 86 / 30 90 90 90 ASD 74 85 74 86 / 30 90 80 100 MSY 77 86 76 87 / 40 90 80 100 GPT 75 84 75 85 / 30 90 80 100 PQL 75 84 72 84 / 30 90 80 90

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



Aviation . 95/DM Prev Discussion . MSW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 18 mi60 min 80°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 23 mi60 min SSW 5.1 G 8.9 88°F 80°F
PTBM6 - 8741003 - Petit Bois Island, MS 25 mi60 min SSW 13 G 15 82°F 1013.8 hPa (-1.2)
MBPA1 44 mi60 min 77°F 75°F
DPIA1 - Dauphin Island, AL 45 mi60 min SSW 8 G 13 80°F 1013.5 hPa (-1.2)
FMOA1 - 8734673 - Fort Morgan, AL 48 mi60 min SSW 16 G 17 80°F 1013.6 hPa (-1.0)
MCGA1 - 8736897 - Coast Guard Sector Mobile, AL 48 mi60 min SW 4.1 G 7 77°F 81°F1012.4 hPa (-1.3)
PTOA1 49 mi60 min 78°F 71°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 mi64 minSW 1110.00 miFair78°F72°F82%1012.8 hPa
Gulfport - Gulfport-Biloxi International Airport, MS9 mi67 minSSW 310.00 miFair78°F72°F82%1012.7 hPa
Moss Point - Trent Lott International Airport, MS20 mi67 minSW 410.00 miFair77°F72°F85%1013.2 hPa

Link to 5 minute data for KBIX

Wind History from BIX (wind in knots)
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Last 24hrCalmW4W3CalmCalmW3SW3SW9S10SW14SW14SW13SW12SW16SW14--SW15SW17SW16SW14SW11W5SW9SW11
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2 days agoE4E4E5E6E7E6S14
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Tide / Current Tables for Biloxi, Biloxi Bay, Mississippi
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Biloxi
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Mon -- 03:06 AM CDT     Moonset
Mon -- 05:53 AM CDT     Sunrise
Mon -- 08:12 AM CDT     2.01 feet High Tide
Mon -- 04:48 PM CDT     Moonrise
Mon -- 07:23 PM CDT     -0.31 feet Low Tide
Mon -- 08:00 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.811.21.51.71.81.9221.91.71.41.10.80.50.2-0.1-0.2-0.3-0.3-0.2-0.10.1

Tide / Current Tables for Gulfport, Gulfport Harbor, Mississippi
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Gulfport
Click for Map
Mon -- 03:07 AM CDT     Moonset
Mon -- 05:54 AM CDT     Sunrise
Mon -- 09:16 AM CDT     1.72 feet High Tide
Mon -- 04:49 PM CDT     Moonrise
Mon -- 06:47 PM CDT     0.03 feet Low Tide
Mon -- 08:01 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.80.80.91.11.21.41.61.71.71.71.61.41.20.90.60.30.1000.10.20.30.4

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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