Sunday, April18, 2021
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Marine Weather and Tides
DeLisle, MS

Version 3.4
NOTICE
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 6:23AMSunset 7:27PM Sunday April 18, 2021 4:13 PM CDT (21:13 UTC) Moonrise 10:50AMMoonset 12:37AM Illumination 44% Phase: First Quarter Moon; Moon at 7 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- 351 Pm Cdt Sun Apr 18 2021
.small craft exercise caution in effect from 10 pm cdt this evening through Monday morning...
Tonight..North winds 10 to 15 knots rising to 15 to 20 knots late in the evening. Waves 3 to 5 feet. Dominant period 4 seconds.
Monday..North winds 15 to 20 knots becoming northwest 5 to 10 knots in the afternoon. Waves 2 to 4 feet. Dominant period 4 seconds. Waves or seas subsiding to 1 foot or less. Dominant period 4 seconds in the afternoon.
Monday night..Northwest winds 5 to 10 knots becoming north after midnight. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday..Northeast winds 5 to 10 knots becoming south late in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday night..Northwest winds 10 to 15 knots. Waves 1 foot or less. Dominant period 4 seconds. Waves or seas building to 1 to 3 feet. Dominant period 4 seconds after midnight.
Wednesday..North winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Wednesday night..Northeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Thursday..East winds 10 to 15 knots. Waves 2 to 4 feet.
Thursday night..East winds 10 to 15 knots. Waves 2 to 4 feet.
Friday..Southeast winds 15 to 20 knots. Waves 3 to 5 feet. Slight chance of showers in the afternoon.
Friday night..Southeast winds 15 to 20 knots. Waves 3 to 5 feet. Chance of showers in the evening, then showers and slight chance of Thunderstorms after midnight.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 351 Pm Cdt Sun Apr 18 2021
Synopsis..High pressure will build into the north gulf waters through Monday and settle over the central gulf coast region on Tuesday. Another strong cold front will move through the region Tuesday night and early Wednesday morning with fairly strong high pressure with cool air building in behind the front Wednesday into Thursday before moving east on Friday.


7 Day Forecast for Marine Location Near DeLisle, MS
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location: 30.36, -89.27     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 181806 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 106 PM CDT Sun Apr 18 2021

UPDATE.

Forecast is mostly on track in the near term. Will likely be looking at the next rain system coming in a bit later on Friday than currently indicated, but will need to look at the 12z ECMWF operational run to see if it's slower trend is maintained.

AVIATION.

VFR conditions will prevail through Monday with only a few to scattered low level clouds at or above 3000 feet in afternoon and some mid to high clouds.

22/TD

PREV DISCUSSION. /issued 351 PM CDT Sun Apr 18 2021/

SYNOPSIS .

Frontal boundary now well south of our coastal waters. Southern stream shortwave should be exiting the CWA in the next few hours, with the northern stream shortwave dropping southeast through Kansas and Oklahoma. Main area of precipitation should also exit our eastern coastal waters with the shortwave. Temperatures generally mid 50s to lower 60s away from marine influences.

SHORT TERM (Through Tuesday) .

Almost seems hard to believe, but drier weather on tap for the area, with even some sunshine expected today. Precipitable water values that had been well over 1.5 inches are expected to drop below an inch by sunrise across most or all of the area. Already seeing a loss of low clouds across western portions of the area. Still some residual mid and high level moisture around, and as wet as the ground is, some flat strato-cumulus development during the heat of the day wouldn't be unexpected. Northern stream shortwave moves eastward to the east coast on Monday, followed by a southern stream shortwave ejecting across the area on Tuesday. NAM solution is an outlier solution with a more northern track of low pressure across the Gulf of Mexico, along with a stronger wind field. That solution would bring rain to eastern sections late Monday night and Tuesday. Either solution would bring cloud cover back to the area Monday afternoon into early Tuesday, but will keep the forecast mostly dry per the consensus.

Current NBM temperature forecast more closely resembles a GFS/ECMWF blend and is accepted with little change.

LONG TERM .

Very broad L/W trough will dominate the eastern half-2/3rds of the CONUS and it will send a cold front through the area Wednesday and this cooler drier air mass will quickly move in over the area Wednesday night and Thursday. Rather chilly temps for late April will impact the region with lows ranging from possibly the upper 30s to mid 50s Thursday morning. This drier cooler airmass will be very short lived though as the next s/w will already be moving into the desert southwest Thursday night and this will allow the region to moderate quickly. This s/w will move into the Plains on Friday and Friday night and could bring . ugh I don't want to say it . showers and thunderstorms back to the region again. /CAB/

AVIATION (valid through 12z Monday) .

All terminals have returned to VFR conditions, although can't rule out ceilings at KNEW briefly dropping into the MVFR range over the next few hours. Beyond mid-morning, expect VFR conditions to predominate, but could see some scattered clouds in the FL030-050 layer during max heating. May be a few northerly wind gusts to 20 knots at KNEW during the day and early evening hours.

MARINE .

Will carry Small Craft Exercise Caution headlines for most of the open coastal waters today, although northern portions of those zones will see winds relax later in the day. May need to extend those headlines for the outer waters tonight. Probably a brief lull in the winds this evening before cooler air reinforces briefly late tonight. By midday on Monday, a lighter wind regime moves in for about 24 hours as high pressure moves along the northern Gulf coast. Another reinforcement of cool, dry air will increase winds again Wednesday into Thursday, but may stay below advisory criteria.

PRELIMINARY POINT TEMPS/POPS. MCB 71 46 72 51 / 0 0 0 10 BTR 71 48 74 52 / 0 0 0 10 ASD 74 49 75 52 / 10 10 0 10 MSY 73 57 74 59 / 10 10 0 20 GPT 74 51 74 54 / 10 10 0 10 PQL 74 51 74 53 / 10 10 0 10

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
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 4 mi56 min NW 8.9 G 13 76°F 66°F
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 37 mi56 min 65°F
SHBL1 - 8761305 - Shell Beach, LA 40 mi56 min NW 7 G 8 65°F 70°F1014 hPa
PTBM6 - 8741003 - Petit Bois Island, MS 42 mi56 min NNW 12 G 15 68°F 1012.8 hPa

Wind History for Bay Waveland Yacht Club, MS
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bay St. Louis, Stennis International Airport, MS10 mi24 minN 610.00 miPartly Cloudy72°F52°F50%1013.2 hPa
Gulfport - Gulfport-Biloxi International Airport, MS11 mi21 minNW 1010.00 miFair72°F53°F52%1012.6 hPa
Keesler Air Force Base / Biloxi, MS19 mi18 minNNW 810.00 miOvercast72°F52°F50%1012.8 hPa

Link to 5 minute data for KHSA

Wind History from HSA (wind in knots)
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Last 24hrN6CalmNW4CalmN12------------------N5N6NE8NE8NE5
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N8N4NW6NW9N6
1 day agoSE4SE5E4E4E4------------------NE3NE7NE6N10N8N10444N6
2 days agoN10CalmE5CalmCalm------------------NE7--NE6
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Tide / Current Tables for Bay St. Louis, Mississippi (2)
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Bay St. Louis
Click for Map
Sun -- 12:37 AM CDT     Moonset
Sun -- 03:25 AM CDT     -0.24 feet Low Tide
Sun -- 06:26 AM CDT     Sunrise
Sun -- 10:50 AM CDT     Moonrise
Sun -- 04:15 PM CDT     1.60 feet High Tide
Sun -- 07:26 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.1-0.1-0.2-0.2-0.2-0.2-0.10.10.30.50.70.91.11.31.41.51.61.61.51.41.210.80.5

Tide / Current Tables for Gulfport, Gulfport Harbor, Mississippi
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Gulfport
Click for Map
Sun -- 12:33 AM CDT     0.14 feet Low Tide
Sun -- 12:36 AM CDT     Moonset
Sun -- 06:25 AM CDT     Sunrise
Sun -- 10:49 AM CDT     Moonrise
Sun -- 03:07 PM CDT     1.83 feet High Tide
Sun -- 07:26 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.10.20.30.30.40.50.60.811.21.31.51.61.81.81.81.71.41.210.80.60.4

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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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