Thursday, September16, 2021
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Marine Weather and Tides
Pointe a la Hache, 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 6:44AMSunset 7:05PM Thursday September 16, 2021 6:05 AM CDT (11:05 UTC) Moonrise 4:41PMMoonset 2:08AM Illumination 74% 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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GMZ552 Expires:202109162145;;703916 Fzus54 Klix 160905 Cwflix Coastal Waters Forecast National Weather Service New Orleans La 405 Am Cdt Thu Sep 16 2021 Pascagoula To Atchafalaya River Out To 60 Mile Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves...along With The Occasional Height Of The Average Highest Ten Percent Of The Waves. Gmz550-552-162145- Coastal Waters From Port Fourchon La To Lower Atchafalaya River La Out 20 Nm- Coastal Waters From The Southwest Pass Of The Mississippi River To Port Fourchon Louisiana Out 20 Mile- 405 Am Cdt Thu Sep 16 2021
Today..Southwest winds 15 knots. Seas 3 to 6 feet. Dominant period 5 seconds. Showers likely early in the morning. Slight chance of Thunderstorms through the day. Showers in the late morning and afternoon.
Tonight..South winds 15 to 20 knots. Seas 3 to 5 feet. Dominant period 5 seconds. Showers likely and slight chance of Thunderstorms.
Friday..South winds 15 to 20 knots. Seas 2 to 4 feet. Dominant period 5 seconds. Showers and slight chance of Thunderstorms.
Friday night..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds. Chance of showers in the evening. Chance of Thunderstorms through the night. Showers after midnight.
Saturday..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds. Showers in the morning. Thunderstorms likely through the day. Showers likely in the afternoon.
Saturday night..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds. Chance of showers in the evening. Chance of Thunderstorms through the night. Showers likely after midnight.
Sunday..South winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 5 seconds. Showers and chance of Thunderstorms.
Sunday night..South winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 5 seconds. Chance of showers and slight chance of Thunderstorms.
Monday..South winds near 10 knots. Seas 1 to 2 feet. Dominant period 5 seconds. Showers in the morning. Chance of Thunderstorms through the day. Showers likely in the afternoon.
Monday night..South winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Chance of showers and slight chance of Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 405 Am Cdt Thu Sep 16 2021
Synopsis..The remnants of nicholas will finally begin to exit the gulf coast Friday but a trough will be left behind that will stall over the area in a north-south orientation.


7 Day Forecast for Marine Location Near Pointe a la Hache, LA
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location: 29.43, -89.98     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 160905 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 405 AM CDT Thu Sep 16 2021

.SHORT TERM (Today through Saturday night) Focus will become more toward rainfall rates and not as much on totals area wide. Rates could be around 2 to 3 inches per hour today through Saturday and isolated areas could see 3 to 5 inches over that time frame. But area wide totals would be more in line with 1 to 2 inches. Regardless, looking at antecedant conditions, soils are saturated for many locations and these rates would surely push those areas into flash flooding. The majority of this should be diurnally driven but some areas of heavy rain will be found overnight as well. The remnants of Nicholas will meander around the SW part of Louisiana today but will finally get pulled northward Friday and out of the state by Friday night. The problem is the wake trough these systems leave behind which is basically a plume of tropical moisture itself keeping the potential for heavy rain going through Saturday.

Long Term (Sunday and beyond).

Weak troughing across the Lower Mississippi River Valley will not be in any rush to depart the area. Moisture levels as measured by precipitable water values, are likely to remain in excess of 2 inches across most or all of the area through at least the weekend, and likely into early next week. Daily rounds of showers and thunderstorms are expected to continue each day, being most numerous over land during the day, and over marine areas at night.

Looks like the 15/12z GFS run attempted to push a cold front through the area, which appears to be an outlier solution for now. A deeper northern stream trough moving across the Great Plains and Middle Mississippi River Valley doesn't appear to have quite enough push behind it to push a cold front and drier air through the area. Some indications that weak ridging will try to build in from the eastern Gulf of Mexico around Tuesday or Wednesday, which may be just enough to lower the areal coverage of daily convection a little bit, but not enough to significantly lower temperatures. Opted not to make significant changes to temperature forecast. High temperatures will be more of a function of when thunderstorms occur each day with convective temperatures in the lower and middle 80s. 35

AVIATION .

MVFR ceilings should continue for most of the day. The SHRA and possible TSRA will take up more areas during the day and could be near most terminals. Threat of TSRA at any one terminal isn't high enough to carry anything more restrictive than VCTS. Expect most convection to dissipate prior to 00z Friday. Beyond 00z Friday, there will likely be a brief period of VFR to MVFR conditions. While ceilings could deteriorate below that during the evening, it'll be somewhat more likely beyond 06z Friday. 35/17

MARINE .

Winds should be mainly in a south direction with speeds of 10-15kt through the weekend into the start of next week. Thunderstorm activity will remain as well and will be capable of bringing rapidly higher winds and seas. No appreciable changes until late into next week.

PRELIMINARY POINT TEMPS/POPS. MCB 85 72 84 71 / 90 50 100 50 BTR 85 72 84 71 / 90 40 90 40 ASD 88 74 86 73 / 80 50 100 60 MSY 89 76 87 76 / 80 50 100 60 GPT 85 75 84 74 / 80 70 100 60 PQL 85 74 85 72 / 90 70 100 70

LIX WATCHES/WARNINGS/ADVISORIES. LA . Flash Flood Watch through Friday evening for LAZ037-039-046>050- 056>061-063>072-075>078.

Coastal Flood Advisory until 7 PM CDT this evening for LAZ064- 066>070-076-078.

GM . None. MS . Flash Flood Watch through Friday evening for MSZ070-071-077- 080>082.

Coastal Flood Advisory until 7 PM CDT this evening for MSZ080- 081.

GM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GISL1 - 8761724 - Grand Isle, LA 11 mi47 min 5.1 G 8 81°F1008.9 hPa
BYGL1 - 8762482 - Bayou Gauche, LA 34 mi47 min 78°F 80°F1008.8 hPa
SHBL1 - 8761305 - Shell Beach, LA 34 mi47 min SE 6 G 7 78°F 83°F1009.1 hPa
42084 35 mi65 min 82°F4 ft
CARL1 36 mi47 min 83°F
NWCL1 - 8761927 - New Canal, LA 42 mi47 min E 1.9 G 2.9 78°F 81°F1008.1 hPa
PILL1 42 mi47 min S 11 G 18 79°F 84°F1009.5 hPa
BURL1 - Southwest Pass, LA 47 mi65 min 11 G 12

Wind History for Grand Isle, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galliano, South Lafourche Airport, LA15 mi78 minESE 310.00 miOvercast79°F73°F84%1008.5 hPa

Link to 5 minute data for KGAO

Wind History from GAO (wind in knots)
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Last 24hr----------------------S5--CalmSE4Calm----CalmSE3CalmCalmE3Calm
1 day ago------------------------------------------------
2 days agoE3E3E5--E7--E8
G14
----SE9------------------E4--------

Tide / Current Tables for Manilla, Mississippi River Delta, Louisiana
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Manilla
Click for Map
Thu -- 02:08 AM CDT     Moonset
Thu -- 06:45 AM CDT     Sunrise
Thu -- 08:06 AM CDT     1.51 feet High Tide
Thu -- 04:41 PM CDT     Moonrise
Thu -- 07:03 PM CDT     Sunset
Thu -- 09:18 PM CDT     0.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.50.70.91.11.21.41.51.51.51.41.31.21.10.90.70.50.40.30.20.10.10.10.1

Tide / Current Tables for Independence Island, Mississippi River Delta, Louisiana
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Independence Island
Click for Map
Thu -- 02:08 AM CDT     Moonset
Thu -- 06:45 AM CDT     Sunrise
Thu -- 08:03 AM CDT     1.38 feet High Tide
Thu -- 04:40 PM CDT     Moonrise
Thu -- 07:03 PM CDT     Sunset
Thu -- 08:04 PM CDT     0.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.60.70.911.21.31.31.41.41.31.210.90.70.50.40.20.10.10.10.10.10.2

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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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