Friday, February23, 2018 L-36.com


Marine Weather and Tides
Dulac, LA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:32AMSunset 5:59PM Friday February 23, 2018 2:33 PM CST (20:33 UTC) Moonrise 11:47AMMoonset 12:37AM Illumination 61% Phase: Waxing Gibbous; Moon at 8 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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GMZ550 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- Coastal Waters From Boothville La To Southwest Pass Of The Mississippi River Out 20 Nm- Coastal Waters From Pascagoula Mississippi To Stake Island Out 20 Mile- 918 Am Cst Fri Feb 23 2018
Rest of today..Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 7 seconds. Chance of showers and Thunderstorms.
Tonight..Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 7 seconds. Chance of showers and slight chance of Thunderstorms.
Saturday..South winds 15 to 20 knots. Seas 3 to 6 feet. Dominant period 7 seconds.
Saturday night..South winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 6 seconds. Chance of showers and Thunderstorms after midnight.
Sunday..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 6 seconds. Chance of showers and Thunderstorms.
Sunday night..South winds 10 to 15 knots becoming west 5 to 10 knots after midnight. Seas 2 to 4 feet. Dominant period 6 seconds. Showers likely and slight chance of Thunderstorms.
Monday..Northwest winds 5 to 10 knots becoming northeast 10 to 15 knots in the late morning and afternoon. Seas 3 to 5 feet. Dominant period 6 seconds. Showers likely.
Monday night..East winds 10 to 15 knots. Seas 3 to 5 feet. Dominant period 5 seconds.
Tuesday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 4 seconds. Chance of showers.
Tuesday night..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 4 seconds. Chance of showers.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 918 Am Cst Fri Feb 23 2018
Synopsis..Persistent onshore flow will continue through early Sunday. Another cold front will move off the coast late Sunday but become stationary in the northern gulf Monday before moving north as a warm front Tuesday.

7 Day Forecast for Marine Location Near Dulac, LA
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location: 29.06, -90.81     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 231850 aaa
afdlix
area forecast discussion... Updated
national weather service new orleans la
1250 pm cst Fri feb 23 2018

Aviation
Complex situation with unstable airmass in place presenting a
large area of low clouds and showers in response to a MCV feature
that moved out of the gulf this morning. Widespread MVFR ceilings
lowering to ifr in rainfall. These conditions should hold through
this evening but lower to more widespread ifr ceilings generally
after about 07z. Variable conditions expected for better part of
the morning Saturday.

Sounding discussion
Special 18z balloon release to assess the current convective
trends locally and to assist in warm sector pre-conditioning for
weather anticipated for Saturday and Sunday in the gulf states.

Very unstable sounding sampled just east of the convection with
precipitable water values off the chain at 1.61" for mid-february.

This is the normal value for june. Low based LCL lfc around 2kft
with EL around 38kft. Not the deepest convection by far, but
efficient rainfall potential, as evidenced by street flooding in
parts of new orleans metro this morning from a brief shower. Wind
profile shows some modest turning from SE through SW 10-50kt, the
lower portion only ranging 10-30kt. Dry air above a saturated
layer aloft conducive for wet microburst potential in downdrafts,
probably closer to 45-50 mph. Chap run on 12z sounding had a ricks
index of 138 which did yield a 13% chance of severe for gust
potential 45kt, waterspouts likely and pea sized hail. The 18z
chap run softened to a ri 58, pop 38% non-severe for gust
potential now 12kt, no hail, no tor. Precip potential indicated
3.02"-4.49" and recent along-flow alignment of convective axes
does cause concern of brief echo training in this efficient air
mass next few hours.

Decision support
Dss code: yellow.

Deployed: none.

Activation: none.

Activities: radar support for convection in area.

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.

Yellow = heightened impacts with short-fused watch, warning or
advisory issuances; radar support.

Orange = high impacts; slight to moderate risk severe; nearby tropical
events; hazmat or other large episodes.

Red = full engagement for moderate risk of severe and or
direct tropical threats; events of national significance.

Preliminary point temps pops
Mcb 82 69 83 63 70 40 50 80
btr 84 69 84 64 80 20 30 70
asd 84 69 84 69 60 40 30 40
msy 82 70 84 68 60 30 20 40
gpt 79 68 79 68 50 50 20 40
pql 80 67 81 68 50 40 20 40

Lix watches warnings advisories
La... None.

Gm... None.

Ms... None.

Gm... None.

24 rr


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SPLL1 - South Timbalier Block 52, LA / CSI06 22 mi93 min S 6 G 8
KXPY 33 mi38 min SSE 8.9 79°F 72°F
EINL1 37 mi45 min S 11 G 11 73°F 58°F1021.3 hPa71°F
KSPR 38 mi38 min S 8 77°F 72°F
AMRL1 - 8764227 - Amerada Pass, LA 39 mi45 min S 6 G 12 78°F 58°F1021.7 hPa
LOPL1 - Louisiana Offshore Oil Port, LA 43 mi38 min S 14 G 16 75°F 4 ft1021.1 hPa
KEIR 46 mi38 min S 6 77°F 73°F
GISL1 - 8761724 - Grand Isle, LA 47 mi45 min SE 6 G 8 75°F 72°F1022.6 hPa
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 48 mi45 min S 13 G 16 77°F 53°F1021.7 hPa

Wind History for LAWMA, Amerada Pass, LA
(wind in knots)    EDIT      (on/off)   Help
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G19

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Fourchon, LA33 mi38 minSSE 97.00 miFair79°F71°F79%1022.3 hPa

Wind History from XPY (wind in knots)
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Last 24hrSE10SE8
G13
SE8SE8SE8SE8SE10SE7E8E7E8E7E6E8E6E10E7E6SE7SE9SE9
G14
SE9S10S9
1 day agoSE12
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SE6SE7SE7SE7SE8SE8SE9SE5SE7SE7SE7SE8SE8SE8SE11SE11SE9SE11SE11SE9
2 days agoSE9SE11
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SE8S8SE8SE8SE9SE11SE9SE10SE8
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SE12SE12SE13
G20

Tide / Current Tables for Caillou Boca, Mississippi River Delta, Louisiana
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Caillou Boca
Click for Map
Fri -- 12:37 AM CST     Moonset
Fri -- 02:09 AM CST     First Quarter
Fri -- 03:17 AM CST     -0.32 feet Low Tide
Fri -- 06:34 AM CST     Sunrise
Fri -- 11:47 AM CST     Moonrise
Fri -- 03:47 PM CST     1.16 feet High Tide
Fri -- 05:58 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-0.2-0.3-0.3-0.3-0.3-0.2-00.10.30.50.60.80.91.11.11.21.110.90.80.60.30.1

Tide / Current Tables for Raccoon Point, Caillou Bay, Louisiana
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Raccoon Point
Click for Map
Fri -- 12:38 AM CST     Moonset
Fri -- 01:45 AM CST     -0.45 feet Low Tide
Fri -- 02:09 AM CST     First Quarter
Fri -- 06:35 AM CST     Sunrise
Fri -- 11:47 AM CST     Moonrise
Fri -- 03:29 PM CST     1.21 feet High Tide
Fri -- 05:59 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-0.4-0.5-0.4-0.3-0.2-0.10.10.30.40.60.80.91.11.21.21.21.110.80.60.40.1-0.2

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for New Orleans/Baton Rouge, LA (15,3,4,5)
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Ground Weather Radar Station New Orleans/Baton Rouge, LA
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weather_mapweather_map weather_map

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 numerious 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.