Saturday, January18, 2020
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Marine Weather and Tides
Killian, LA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:57AMSunset 5:26PM Saturday January 18, 2020 5:15 PM CST (23:15 UTC) Moonrise 1:02AMMoonset 12:33PM Illumination 37% Phase: Third Quarter Moon; Moon at 23 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- 324 Pm Cst Sat Jan 18 2020
.small craft advisory in effect from 2 am cst Sunday through Sunday morning...
.small craft exercise caution in effect from Sunday morning through late Sunday night...
Tonight..Northwest winds 5 to 10 knots becoming north 20 knots after midnight. Waves 1 foot building to 2 to 4 feet. Dominant period 4 seconds. Chance of showers.
Sunday..North winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Sunday night..North winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Monday..North winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Monday night..North winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Tuesday..Northeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Tuesday night..East winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Wednesday..East winds 5 to 10 knots. Waves 1 to 2 feet.
Wednesday night..East winds near 10 knots. Waves 1 to 2 feet. Slight chance of showers after midnight.
Thursday..East winds 10 to 15 knots. Waves 1 to 3 feet. Chance of showers.
Thursday night..Southeast winds 5 to 10 knots. Waves 1 to 2 feet. Showers likely in the evening, then chance of showers after midnight.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 324 Pm Cst Sat Jan 18 2020
Synopsis..A strong cold front is expected to push through the waters tonight with winds and seas building through the night into Sunday. High pressure will build over the waters through early next week.


7 Day Forecast for Marine Location Near Killian, LA
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location: 30.3, -90.42     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 182149 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 349 PM CST Sat Jan 18 2020

FXUS64 KLIX 182143 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 343 PM CST Sat Jan 18 2020

DISCUSSION. For today, last hurrah of warm temperatures currently ongoing before a much cooler period comes in with the front currently in northwest Louisiana moving towards the southeast. Behind the front, temperatures have already plummeted into the low 50s. Back ahead of the front, compressional heating is occuring ahead of the front with temperatures, are pushing even 80 so ended bumped up temperatures over what consensus had. Additionally there have been are a couple of showers with isolated thunderstorms with lightning being just west of our area currently.

High pressure will build in the wake of the front with cooler temperatures and drier conditions. Highs will be around the low to mid 50s with lows touching or just below freezing particularly from Monday through Wednesday. Only a light freeze would be expected along and north of I-12 on Tuesday morning. The next system to bring rain will around Thursday. Guidance is still having time and spacial differences but it still does appear to be potentially a heavy rainmaker so will be keeping an eye on it as the time gets closer. On the other hand, severe weather potential does not appear to be as conducive as both CAPE and shear are rather low. -BL

MARINE. Current conditions are improving to light levels prior to cold frontal passage. Wind shift and steady increase of NW winds in the coastal waters expected around 06Z near shore to 09Z at 60NM out. SCA conditions to onset about 1-2 hours after wind shift as colder air deepens over the relatively warmer water. SCA conditions expected to persist all day Sunday into Monday morning as advection neutralizes and gradient relaxes. Expecting a short period of SCA conditions on tidal lakes and sounds overnight into early Sunday morning before setting to below criteria by mid to late morning. Overall conditions improve to light winds and lower seas for Tuesday as winds begin to veer to easterly at moderate levels Wednesday.

AVIATION. MVFR ceilings confined to the maritime and marine influenced terminals, while rest of area has lifted to VFR bases. Arctic cold front almost to KAEX-KDRI and still on track for 04Z passage in western terminals to around 08Z for eastern terminals. As cold air advection deepens, gusty NW winds will develop overnight and continue through the heating of the day with deep thermal mixing. Clouds should clear to VFR CAVU conditions from west to east generally between 13Z-19Z. 24/RR

DECISION SUPPORT. DSS code: Blue. Deployed: None. Activation: None. Activities: Small Craft Advisory Forecast support for Stennis Space Center. River Flood Warnings for Pearl and Mississippi River Gages. Decision Support Services (DSS) Code Legend Green = No weather impacts that require action. Blue = Long-fused watch, warning, or advisory in effect or high visibility event; Marginal risk severe or excessive rain. Yellow = Heightened impacts with short-fused watch, warning or advisory issuances; radar support for slight risk severe or excessive rain. Orange = High Impacts; Enhanced risk severe; nearby tropical events; HazMat or other large episodes. Red = Full engagement for Moderate to high risk of severe and/or excessive rainfall, or direct tropical threats; Events of National Significance.

24/RR

PRELIMINARY POINT TEMPS/POPS. MCB 41 51 33 49 / 50 0 0 0 BTR 42 52 36 51 / 50 0 0 0 ASD 44 54 34 51 / 40 10 0 0 MSY 48 54 40 52 / 50 10 0 0 GPT 44 52 34 49 / 40 10 0 0 PQL 44 55 32 51 / 40 10 0 0

LIX WATCHES/WARNINGS/ADVISORIES. LA . None. GM . Small Craft Advisory from 3 AM Sunday to noon CST Monday for GMZ536-538-550-552-555-557-570-572-575-577.

Small Craft Advisory until 6 PM CST this evening for GMZ555-557- 575-577.

Small Craft Advisory from 2 AM to 9 AM CST Sunday for GMZ530-532- 534.

MS . None. GM . Small Craft Advisory from 3 AM Sunday to noon CST Monday for GMZ538-550-552-555-557-570-572-575-577.

Small Craft Advisory until 6 PM CST this evening for GMZ557-575- 577.

Small Craft Advisory from 2 AM to 9 AM CST Sunday for GMZ532-534.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FREL1 13 mi46 min WSW 5.1 G 8 76°F 1018.5 hPa
NWCL1 - 8761927 - New Canal, LA 25 mi46 min SW 6 G 11 76°F 65°F1018.7 hPa
CARL1 30 mi46 min 52°F
BYGL1 - 8762482 - Bayou Gauche, LA 35 mi46 min WSW 4.1 G 8.9 75°F 69°F1020 hPa

Wind History for East Bank 1, Norco, B. LaBranche, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hammond, Hammond Municipal Airport, LA15 mi41 minWNW 310.00 miOvercast73°F64°F74%1019.6 hPa
New Orleans, New Orleans International Airport, LA24 mi23 minWSW 610.00 miOvercast77°F64°F64%1019.9 hPa

Link to 5 minute data for KHDC

Wind History from HDC (wind in knots)
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Last 24hrE3E7E5E6SE9SE5CalmSE10SE8SE7SE7SE9SE5SE8S6SW3S5S8S9S6SW6SW6SW5W4
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2 days agoCalmCalmCalmCalmCalmCalmCalmS3CalmCalmCalmCalmCalmCalmCalmCalmCalmN3CalmCalmCalmNE5E4NE8

Tide / Current Tables for Paris Road Bridge, Mississippi River Delta, Louisiana
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Paris Road Bridge
Click for Map
Sat -- 01:00 AM CST     Moonrise
Sat -- 06:55 AM CST     Sunrise
Sat -- 10:35 AM CST     -0.12 feet Low Tide
Sat -- 12:31 PM CST     Moonset
Sat -- 05:24 PM CST     Sunset
Sat -- 10:23 PM CST     0.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.40.40.30.20.10-0-0.1-0.1-0.1-0.1-0.1-0.1-00.10.20.30.40.50.60.70.70.7

Tide / Current Tables for Long Point, Lake Borgne, Louisiana
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Long Point
Click for Map
Sat -- 12:59 AM CST     Moonrise
Sat -- 06:54 AM CST     Sunrise
Sat -- 07:08 AM CST     -0.11 feet Low Tide
Sat -- 12:30 PM CST     Moonset
Sat -- 05:22 PM CST     Sunset
Sat -- 07:43 PM CST     0.67 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.20.10-0-0.1-0.1-0.1-0.1-0.1-000.10.20.30.40.50.50.60.70.70.60.60.5

Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New Orleans/Baton Rouge, LA (18,4,5,8)
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Ground Weather Radar Station New Orleans/Baton Rouge, LA
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Gulf Stream Current


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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.