Sunday, April18, 2021
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Marine Weather and Tides
Madisonville, LA

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 6:29AMSunset 7:32PM Sunday April 18, 2021 3:22 PM CDT (20:22 UTC) Moonrise 9:54AMMoonset 12:00AM Illumination 43% 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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GMZ530 Lake Pontchartrain And Lake Maurepas- 1048 Am Cdt Sun Apr 18 2021
Rest of today..North winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Tonight..North winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds.
Monday..Northeast winds 10 to 15 knots easing to near 5 knots early in the afternoon, then becoming south late in the afternoon. Waves 1 to 3 feet subsiding to less than 1 foot. Dominant period 4 seconds.
Monday night..South winds near 5 knots becoming north after midnight. Waves less than 1 foot. Dominant period 4 seconds.
Tuesday..Northeast winds 5 to 10 knots becoming southwest late in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday night..Northwest winds near 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds.
Wednesday..North winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Wednesday night..Northeast winds near 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Thursday..East winds 10 to 15 knots. Waves 2 to 3 feet.
Thursday night..Southeast winds 5 to 10 knots. Waves 1 to 3 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 1048 Am Cdt Sun Apr 18 2021
Synopsis..A cold front has pushed through the coastal waters. High pressure will build into the waters today 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.


7 Day Forecast for Marine Location Near Madisonville, LA
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location: 30.38, -90.16     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
FREL1 23 mi53 min Calm G 2.9 66°F 1014.2 hPa
NWCL1 - 8761927 - New Canal, LA 25 mi53 min NW 1.9 G 5.1 66°F 67°F1014.1 hPa
CARL1 31 mi53 min 64°F
BYGL1 - 8762482 - Bayou Gauche, LA 43 mi53 min N 1 G 2.9 66°F 66°F1015.1 hPa
SHBL1 - 8761305 - Shell Beach, LA 44 mi53 min N 6 G 7 65°F 69°F1014 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 44 mi53 min NNW 5.1 G 8 76°F 66°F

Wind History for New Canal Station, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hammond, Hammond Municipal Airport, LA17 mi43 minN 410.00 miFair68°F52°F56%1014.9 hPa
Slidell, Slidell Airport, LA18 mi30 minN 810.00 miFair72°F52°F50%1014 hPa
New Orleans, New Orleans Lakefront Airport, LA24 mi30 minWNW 910.00 miFair74°F54°F50%1014.2 hPa

Link to 5 minute data for KHDC

Wind History from HDC (wind in knots)
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Last 24hrN8N6N5N8NE3N5N7N6W5NW5NW3W3NW3N4N4CalmN5N5NE5NW5N6N5N5W5
1 day agoE5SE3E7E7NE4NE5N3E5E8SE8SE4N3N3CalmE7N4N7N5NE4N6NE7N7N7N6
2 days agoE5NE6NE4N4NE3N3N3CalmCalmNE3N6N4NE3CalmN5NW11
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Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
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Paris Road Bridge
Click for Map
Sun -- 12:39 AM CDT     Moonset
Sun -- 06:29 AM CDT     Sunrise
Sun -- 07:08 AM CDT     -0.17 feet Low Tide
Sun -- 10:53 AM CDT     Moonrise
Sun -- 07:29 PM CDT     Sunset
Sun -- 07:31 PM CDT     1.13 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.50.30.10-0.1-0.1-0.2-0.2-0.100.10.30.40.60.70.911.11.11.11.110.9

Tide / Current Tables for Long Point, Lake Borgne, Louisiana
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Long Point
Click for Map
Sun -- 12:38 AM CDT     Moonset
Sun -- 03:41 AM CDT     -0.16 feet Low Tide
Sun -- 06:27 AM CDT     Sunrise
Sun -- 10:51 AM CDT     Moonrise
Sun -- 04:51 PM CDT     1.03 feet High Tide
Sun -- 07:27 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.1-0-0.1-0.1-0.2-0.1-0.100.10.30.40.50.70.80.911110.90.80.70.60.4

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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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