Wednesday, April26, 2017 L-36.com


Marine Weather and Tides
Erath, LA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:26AMSunset 7:43PM Wednesday April 26, 2017 7:01 AM CDT (12:01 UTC) Moonrise 5:51AMMoonset 7:08PM Illumination 0% Phase: New Moon; Moon at 0 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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GMZ435 Vermilion Bay- 331 Am Cdt Wed Apr 26 2017
Today..South winds 15 to 20 knots. Bay waters rough. Slight chance of showers and Thunderstorms in the afternoon.
Tonight..Southwest winds 10 to 15 knots becoming northwest after midnight. Bay waters choppy. Chance of showers and Thunderstorms in the evening.
Thursday..Northeast winds 5 to 10 knots becoming southeast in the afternoon. Bay waters a light chop decreasing to smooth in the afternoon.
Thursday night..South winds 10 to 15 knots. Bay waters choppy.
Friday..South winds 10 to 15 knots. Bay waters choppy. Slight chance of showers and Thunderstorms.
Friday night..Southeast winds 15 to 20 knots. Bay waters rough. Slight chance of showers and Thunderstorms.
Saturday..Southeast winds 15 to 20 knots. Bay waters rough. Chance of showers and Thunderstorms.
Saturday night..Southeast winds 15 to 20 knots. Bay waters rough. Chance of showers and Thunderstorms.
Sunday..South winds 15 to 20 knots. Bay waters rough. Showers and Thunderstorms.
Sunday night..Northwest winds 10 to 15 knots. Bay waters choppy. Chance of showers and Thunderstorms.
GMZ400 Synopsis For Lower Atchafalaya River La To High Island Tx Out 60 Nm Including Sabine And Calcasieu Lakes And Vermilion Bay 331 Am Cdt Wed Apr 26 2017
Synopsis.. An approaching cold front today will result in continued moderate onshore flow in the 15 to 20 knot range with gusts to 30 knots. The front will sweep across the northern gulf Wednesday evening possibly accompanied by a few Thunderstorms. A brief and moderate offshore flow will follow the frontal passage Thursday with southerlies rapidly returning by Thursday night. A more active cold front will move into the gulf waters Sunday.

7 Day Forecast for Marine Location Near Erath, LA
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location: 29.68, -92.12     debug


Area Discussion for - Lake Charles, LA
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Fxus64 klch 261151
afdlch
area forecast discussion
national weather service lake charles la
651 am cdt Wed apr 26 2017

Aviation
Strong frontal system is expected to move down and through the
region today. Winds have already begun to pick up ahead of the
front with ceiling expected to remainVFR at least through the
noon hour. Ceilings dropping after the noon hour with shwrs and
thunderstorms on tap through the frontal passage. Looking at
MVFR/ifr wx. Frntl sys to move thru drg the eve hrs.

Prev discussion /issued 417 am cdt Wed apr 26 2017/
discussion...

biggest issue in the short term is the approaching cold front
which will move through the area late this afternoon into this
evening bringing scattered to numerous showers and thunderstorms.

While the most conducive severe weather parameters will remain
across northern louisiana into southern arkansas this afternoon,
forecast soundings across our area still show rather favorable
conditions for the development of severe weather this afternoon
into this evening. The NAM appears the most robust showing nearly
3200 j/kg CAPE and 0-1 km shear values increasing to around 30
knots by 00z amidst a very well curved hodograph. Other guidance
is not quite as favorable, but is still in the same ballpark.

This, combined with spc's enhanced risk area touching our northern
parishes and counties, encouraged me to add severe wording to the
zones across central la and the piney woods counties of tx.

Waffled a bit as to whether or not to add severe wording further
south where sounding parameters are similar, but in the interest
of consistency I held off for the time being. That said, areas
further south along the i-10 corridor will still have the
potential to see at least isolated severe weather.

Flirted with the idea of a wind advisory for today, but just
about all guidance keep winds right at or just below the 20 mph
criteria threshold. One may still be issued later this morning if
observations warrant but opted to forego for the time being.

Convection will clear the area from west to east and should be
completely out of the area by midnight tonight. Behind the front a
brief reprieve with slightly cooler and drier air filtering into
the region Thursday. High pressure quickly scoots off to the east
though veering winds back to the south and ushering in much
warmer temperatures and dewpoints. Some areas will be pushing 90
degrees for what I believe will be the first time this year on
Friday and if the current forecast verifies, we'll be breaking
some record high minimums Saturday morning as lows will only be in
the mid 70's. Rain chances also return Saturday into Sunday in
advance of our next frontal system which will, thankfully, bring
temperatures back down to more seasonal values for the early to
middle part of next week.

Jones
marine...

the approach of a cold front this evening will result in continued
breezy and gusty conditions through the day today. The resulting
elevated seas have necessitated the continuation of the small
craft advisory through 1 am Thursday. A few isolated showers or
thunderstorms could develop over the coastal waters this evening
as the cold front moves through. Behind the front winds will
briefly turn offshore during the day Thursday before veering back
around to the south Thursday night.

Preliminary point temps/pops
Aex 83 53 80 64 / 50 50 0 10
lch 83 57 82 68 / 40 30 0 10
lft 86 61 85 71 / 20 40 10 10
bpt 84 56 82 70 / 40 20 0 10

Lch watches/warnings/advisories
La... None.

Tx... None.

Gm... Small craft advisory until 1 am cdt Thursday for gmz470-472-475.

Small craft exercise caution until 7 am cdt this morning for
gmz430-450-452-455.

Small craft advisory until 1 pm cdt this afternoon for gmz450-
452-455.

Small craft exercise caution from 1 pm cdt this afternoon
through late tonight for gmz450-452-455.

Aviation... 19


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRWL1 - 8766072 - Fresh Water Canal Locks, LA 13 mi44 min SSE 13 G 16 74°F 73°F1004 hPa
MRSL1 - Marsh Island, LA / CSI03 17 mi122 min 18 G 23 78°F
KSCF 41 mi27 min SSE 19 75°F 68°F
EINL1 44 mi44 min S 18 G 22 74°F 74°F1003.8 hPa69°F
AMRL1 - 8764227 - Amerada Pass, LA 44 mi44 min SSE 6 G 12 73°F 71°F1004.2 hPa
TESL1 - Tesoro Marine Terminal - 8764044 - Berwick, LA 47 mi44 min SSE 7 G 9.9 73°F 69°F1004.7 hPa

Wind History for LAWMA, Amerada Pass, LA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Abbeville Chris Crusta Memorial Airport, LA21 mi69 minS 10 G 1410.00 miOvercast73°F69°F89%1004.1 hPa

Wind History from 7R4 (wind in knots)
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Last 24hr----------------------------------------------NW5
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Southwest Pass, Vermilion Bay, Louisiana
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Southwest Pass
Click for Map
Wed -- 05:01 AM CDT     1.94 feet High Tide
Wed -- 06:30 AM CDT     Sunrise
Wed -- 06:50 AM CDT     Moonrise
Wed -- 07:18 AM CDT     New Moon
Wed -- 10:43 AM CDT     1.12 feet Low Tide
Wed -- 03:31 PM CDT     1.52 feet High Tide
Wed -- 07:41 PM CDT     Sunset
Wed -- 08:07 PM CDT     Moonset
Wed -- 10:20 PM CDT     -0.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.91.31.61.91.91.91.71.51.31.11.11.21.31.41.51.51.41.10.80.40.1-0-0

Tide / Current Tables for Lighthouse Point, Louisiana
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Lighthouse Point
Click for Map
Wed -- 04:10 AM CDT     2.30 feet High Tide
Wed -- 06:30 AM CDT     Sunrise
Wed -- 06:50 AM CDT     Moonrise
Wed -- 07:18 AM CDT     New Moon
Wed -- 08:45 AM CDT     1.28 feet Low Tide
Wed -- 02:49 PM CDT     1.86 feet High Tide
Wed -- 07:41 PM CDT     Sunset
Wed -- 08:07 PM CDT     Moonset
Wed -- 08:35 PM CDT     -0.10 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.61.92.22.32.21.91.61.31.31.31.41.61.71.81.91.71.30.80.3-0-0.10.10.3

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

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Lake Charles, LA (8,2,3,4)
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Ground Weather Radar Station Lake Charles, 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.