Sunday, January16, 2022
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Marine Weather and Tides
Denham Springs, 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 7:00AMSunset 5:27PM Sunday January 16, 2022 8:14 PM CST (02:14 UTC) Moonrise 4:19PMMoonset 6:11AM Illumination 100% Phase: Full Moon; Moon at 14 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- 305 Pm Cst Sun Jan 16 2022
.small craft advisory in effect until midnight cst tonight...
.small craft exercise caution in effect from midnight cst tonight through late tonight...
Tonight..Northwest winds near 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Monday..Northwest winds 15 to 20 knots easing to near 10 knots late in the afternoon. Waves 3 to 5 feet. Dominant period 4 seconds. Waves or seas subsiding to 1 to 2 feet. Dominant period 4 seconds in the afternoon.
Monday night..North winds 5 to 10 knots becoming east after midnight. Waves 1 to 2 feet. Dominant period 4 seconds.
Tuesday..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Tuesday night..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Wednesday..South winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of showers in the afternoon.
Wednesday night..Southwest winds near 10 knots becoming north after midnight. Waves 2 to 4 feet. Dominant period 4 seconds. Slight chance of Thunderstorms in the evening. Showers likely through the night.
Thursday..North winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers.
Thursday night..North winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers.
Friday..North winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers.
Friday night..North winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Slight chance of showers through the night.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 305 Pm Cst Sun Jan 16 2022
Synopsis..A strong cold front has moved east of the coastal waters. High pressure will build across the waters for the early to middle parts of the week. Another cold front is expected to move through the waters Wednesday night or Thursday.


7 Day Forecast for Marine Location Near Denham Springs, LA
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location: 30.52, -90.99     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 162333 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 533 PM CST Sun Jan 16 2022

AVIATION UPDATE. Updated for 00z TAF issuance

PREV DISCUSSION. /issued 251 PM CST Sun Jan 16 2022/

SHORT TERM . Tonight through Tuesday . Tonight, the upper level low is forecast to continue moving off the east coast of the US. Strong northwesterly flow will help to continue to advect cold and dry air into the region. Overnight lows tonight into Monday morning are forecast to be in the mid 30s to upper 30s. Most locations are not expected to touch freezing, but it will be close.

Monday, northerly flow continues to advect cold and dry air into the region for another day. Upper level ridging will dominate the pattern. Looking at the models, rain is not expected Monday. Similar to Monday morning, the lows on Tuesday morning are forecast to be in the mid 30s and low 40s.

Tuesday, zonal flow aloft will dominate the upper level pattern. Surface winds will shift from northerly to southerly during the morning hours, which will allow for the reintroduction of moisture and warm air into the region. Weak upper level divergence will allow for some lifting in the environment to occur as well. Based on the models and patterns, rainfall is not expected on Tuesday. MSW

LONG TERM . Wednesday through Saturday . Zonal flow will continue to dominate the upper level pattern Wednesday into Thursday. A shortwave upper level trough is expected to influence the area Wednesday into Thursday, enhancing rain chances for the area. Southerly surface winds will act to enhance warm air and moisture advection into the area, which will increase some instability in the environment. Upper level divergence will also help to enhance some lifting in the environment. Scattered to numerous showers will be possible Wednesday afternoon through early Thursday morning as the front moves through the area, looking at the current models. The main threats associated with the frontal system would be gusty sub- severe (30-60mph) winds and lightning. The models are still showing disagreement on the strength of the system and overall instability looks fairly limited based on the current models, but we will be watching how it develops over the next few days. Behind the front overnight Wednesday into Thursday, strong cold air advection will set up over the area, and northerly surface winds will help funnel the beginning of this cold air into the region. As a result, lows on Thursday morning area forecast to be in the upper 30s and low 40s, as cloud cover will help to moderate the temperatures some.

Thursday and Friday, as the low moves off the east coast of the US, zonal flow will set up over the area. Northerly surface winds will help to enhance cold air advection and dry air advection into the region. Weak upper level convergence Thursday will help to increase the sinking and stable air in the environment. As a result, lows on Friday will be very chilly, looking at the models, with lows in the upper 20s to low 30s. Strong cold air advection behind the front and a lingering low level cloud deck could cause some winter precipitation to develop. Some of the models are indicating the potential for some isentropic lifting continuing into Friday, while some, like the GFS, push the front offshore quickly. If the rain lingers longer over the area due to isentropic lifting, then there will be a better chance to see some winter precipitation. But the timing will be key for this to occur, and there are still a lot of uncertainties/disagreement in the models. On Friday, some weak upper level divergence associated with a weak upper level trough will help to increase some lifting in the environment, but strong northerly flow will keep temperatures below average with lows on Saturday morning forecast to be in the mid 20s to low 30s.

Saturday, the models are very uncertain on the upper level pattern and timing of the different troughs. Looking at the general model consensus, a shortwave upper level trough is expected to influence the area, enhancing rain chances. Strong northerly surface winds will act to limit instability and moisture in the environment. Weak upper level divergence will act to enhance lifting in the environment. Overall, rain chances will be fairly low, given the uncertainty of the system and lack of moisture in the environment. It will be interesting to see how these patterns develop over the next week. MSW

AVIATION . 18Z TAF Package . VFR conditions will prevail for all terminals with the exception of MVFR conditions currently at terminals along and east of I-55. This will only last a few hours more before the clouds push eastward out of the area. Once this happens the skies will clear out and winds should start to become lighter. -BL

MARINE . Tonight, winds will be diminishing, but still strong (15-20kts) and northerly. Monday, winds will be moderate (<15 knots) and northerly. Tuesday, winds will be easterly to southeasterly and moderate (<15 knots). Wednesday, winds will be strong (15-20 kts) and southerly. Thursday and Friday, winds will be northerly and stronger (20-25kts). Saturday and Sunday, winds will be northerly and strong (15-20kts). Wave heights will correspond to the wind speeds. MSW

PRELIMINARY POINT TEMPS/POPS. MCB 43 33 57 33 / 10 0 0 0 BTR 49 33 59 35 / 0 0 0 0 ASD 48 35 60 35 / 0 0 0 0 MSY 48 39 58 41 / 0 0 0 0 GPT 46 36 59 36 / 0 0 0 0 PQL 46 34 58 33 / 0 0 0 0

LIX WATCHES/WARNINGS/ADVISORIES. LA . None. GM . Small Craft Advisory until midnight CST tonight for GMZ530-532- 534-536-538-550-552-555-557-570.

Small Craft Advisory until 6 AM CST Monday for GMZ572-575-577.

MS . None. GM . Small Craft Advisory until midnight CST tonight for GMZ532-534- 536-538-550-552-555-557-570.

Small Craft Advisory until 6 AM CST Monday for GMZ575-577.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NWCL1 - 8761927 - New Canal, LA 58 mi57 min WNW 5.1G8 46°F 54°F1015.5 hPa

Wind History for East Bank 1, Norco, B. LaBranche, LA
(wind in knots)    EDIT      (on/off)   Help
Last 24 hr
1 day
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2 days
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baton Rouge, Baton Rouge Metropolitan, Ryan Field, LA9 mi22 minN 010.00 miFair41°F33°F73%1016.7 hPa

Link to 5 minute data for KBTR

Wind History from BTR (wind in knots)
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Last 24 hrNW18
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1 day agoE5E30E4E3E4NE3E3E4E5E4E4SE5S4S6W9NW9W11
G19
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2 days agoW3W3W4W400SW3000NE30NE4E7E7SE8S6S34SE5SE5E7SE7SE6

Tide / Current Tables for Cote Blanche Island, West Cote Blanche Bay, Louisiana
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Cote Blanche Island
Click for Map
Sun -- 06:12 AM CST     Moonset
Sun -- 07:02 AM CST     Sunrise
Sun -- 11:26 AM CST     -0.69 feet Low Tide
Sun -- 04:23 PM CST     Moonrise
Sun -- 05:30 PM CST     Sunset
Sun -- 08:18 PM CST     1.04 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Cote Blanche Island, West Cote Blanche Bay, Louisiana, Tide feet
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0.9
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0.9
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0.7
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0.3
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-0.1
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-0.4
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-0.6
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-0.7
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-0.7
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-0.6
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-0
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0.8
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Tide / Current Tables for Weeks Bay, Vermilion Bay, Louisiana
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Weeks Bay
Click for Map
Sun -- 06:13 AM CST     Moonset
Sun -- 07:03 AM CST     Sunrise
Sun -- 11:42 AM CST     -0.74 feet Low Tide
Sun -- 04:24 PM CST     Moonrise
Sun -- 05:31 PM CST     Sunset
Sun -- 07:43 PM CST     1.11 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weeks Bay, Vermilion Bay, Louisiana, Tide feet
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0.9
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0.3
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-0.6
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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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