Saturday, September18, 2021
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Marine Weather and Tides
New Orleans, LA

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 6:45AMSunset 7:03PM Saturday September 18, 2021 9:28 AM CDT (14:28 UTC) Moonrise 5:08PMMoonset 3:17AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 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- 414 Am Cdt Sat Sep 18 2021
Today..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Tonight..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms through the night.
Sunday..Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms in the morning, then showers with Thunderstorms likely in the afternoon.
Sunday night..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms in the morning, then showers with Thunderstorms likely in the afternoon.
Monday night..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers after midnight. Slight chance of Thunderstorms after midnight.
Tuesday..West winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds. Chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Tuesday night..Southwest winds near 5 knots becoming north after midnight. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Wednesday..North winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Wednesday night..North winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 414 Am Cdt Sat Sep 18 2021
Synopsis..A broad low pressure system over arkansas and northern louisiana will weaken through the weekend. A more normal seabreeze cycle is expected on Sunday and Monday, but a strong cold front will sweep through the waters Tuesday night into Wednesday.


7 Day Forecast for Marine Location Near New Orleans, LA
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location: 30.07, -90.06     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 180909 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 409 AM CDT Sat Sep 18 2021

SYNOPSIS.

Upper troughing remains over Arkansas and northern Louisiana this morning. Precipitable water values aren't quite as high as early in the week, but still sufficient for quite a bit of convection over marine areas. Early morning temperatures and dew points remain in the 70s.

SHORT TERM (Through Monday night).

Upper troughing will only very slowly lift away from the area through Monday. Moist airmass will remain in place with precipitable water values remaining near or above 2 inches during the daytime hours, but may show a very slight drying trend day by day. Daily rounds of convection are expected. Today's convection may be somewhat more focused to the east of Interstate 55, but tomorrow and Monday are somewhat more likely to develop along lake/sea breeze boundaries at first, then spread northward. Most convection over land should dissipate near sunset each day, with late night redevelopment over marine areas.

Not going to make any changes to the Flash Flood Watch. Any excessively heavy precipitation is going to be very limited in scope, but still could produce a few flash flooding issues. Threat becomes even more limited Sunday and Monday, Will allow day shift to make the call on any further extensions, but at this time, expectation is that it won't be extended.

Don't see any real opportunities to make major gains on temperature guidance through Monday. 35

LONG TERM (Tuesday and beyond).

Going into next week in the upper levels a shortwave trough moves into the Mississippi River Valley. This will push a cold front into the area, with passage occurring mainly Tuesday afternoon and Tuesday night.

Beyond the frontal passage, cooler and drier air will follow in the wake of the front, with the remainder of the workweek being dry. Moisture will gradually return next weekend as high pressure shifts off the Atlantic Coast.

Not much spread in deterministic guidance temperatures on Tuesday ahead of the front. Actually, even behind the front, the guidance spread is smaller than one might expect with the first few cold fronts of the fall. Would note that on low temp, especially on the north shore, the deterministic guidance runs a few degrees above the mean. May be a bit of a target of opportunity for improvement over the next few days. Diurnal temperature ranges ahead of the front will generally be around 15 degrees, but behind the front, could be in excess of 25 degrees. 35

AVIATION.

MVFR to IFR conditions are expected for a good chunk of the early morning. Can't rule out a bit of LIFR conditions especially in the early morning hours. Later during the day, thunderstorm chances return again so put VCTS wording. Expect a repeat of lower conditions overnight into Sunday morning. -BL/35

MARINE.

Through the daytime hours Tuesday, the main marine threat will be thunderstorms. After the cold frontal passage sometime around Tuesday night, cold, dry advection is likely to bring an increase in northerly winds. If guidance from the GFS and ECMWF is any indication, will likely need Small Craft Advisories, or at least Small Craft Exercise Caution headlines, potentially as early as Tuesday night, but more likely Wednesday into Thursday. 35

PRELIMINARY POINT TEMPS/POPS. MCB 85 72 85 71 / 70 40 90 40 BTR 85 72 85 71 / 70 40 90 30 ASD 86 73 87 73 / 80 40 90 40 MSY 87 76 88 76 / 80 30 90 40 GPT 84 74 85 74 / 70 50 80 40 PQL 83 73 85 73 / 70 50 80 40

LIX WATCHES/WARNINGS/ADVISORIES. LA . Flash Flood Watch through this evening for LAZ037-039-049-050- 056>061-063>072-075>078.

GM . None. MS . Flash Flood Watch through this evening for MSZ077-080>082.

GM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWCL1 - 8761927 - New Canal, LA 4 mi58 min SE 1 G 4.1 80°F 81°F1016 hPa
CARL1 10 mi58 min 82°F
SHBL1 - 8761305 - Shell Beach, LA 25 mi58 min ESE 5.1 G 8 80°F 82°F1017.1 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 27 mi58 min 79°F 81°F1016.7 hPa
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 43 mi58 min SE 7 G 8 81°F 79°F

Wind History for New Canal Station, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Orleans, New Orleans Lakefront Airport, LA3 mi35 minSE 510.00 miMostly Cloudy80°F76°F87%1016.4 hPa
New Orleans, New Orleans International Airport, LA12 mi35 minVar 410.00 miMostly Cloudy80°F77°F90%1017.1 hPa
New Orleans Naval Air Station - Alvin Callender Field, LA17 mi33 minSE 610.00 miMostly Cloudy81°F81°F100%1016.5 hPa
Slidell, Slidell Airport, LA23 mi35 minN 08.00 miOvercast81°F77°F88%1017.1 hPa

Link to 5 minute data for KNEW

Wind History from NEW (wind in knots)
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Last 24hrSE10S6S5S7SE5SE10S12S13S14S9S11SE4E4E4SE3SE5SE6SE3E3E3E6E3E5SE5
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2 days agoSE10S11SE12S8S9SE6SE7SE8SE6SE8E5E6E10SE7SE5E6E4E6SE3SE3E5E6E7SE7

Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
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Paris Road Bridge
Click for Map
Sat -- 12:57 AM CDT     0.18 feet Low Tide
Sat -- 04:16 AM CDT     Moonset
Sat -- 06:46 AM CDT     Sunrise
Sat -- 01:45 PM CDT     1.49 feet High Tide
Sat -- 06:06 PM CDT     Moonrise
Sat -- 07:00 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.20.20.30.40.50.60.70.911.21.31.41.51.51.51.41.31.110.80.70.50.4

Tide / Current Tables for Long Point, Lake Borgne, Louisiana
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Long Point
Click for Map
Sat -- 04:14 AM CDT     Moonset
Sat -- 06:44 AM CDT     Sunrise
Sat -- 11:05 AM CDT     1.35 feet High Tide
Sat -- 06:05 PM CDT     Moonrise
Sat -- 06:59 PM CDT     Sunset
Sat -- 10:16 PM CDT     0.30 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.30.40.50.70.80.911.21.31.31.31.31.31.210.90.70.60.50.40.30.30.3

Weather Map
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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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