Monday, November20, 2017 L-36.com


Marine Weather and Tides
Jamaica Beach, TX

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 6:46AMSunset 5:23PM Monday November 20, 2017 7:42 AM CST (13:42 UTC) Moonrise 8:31AMMoonset 7:21PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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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GMZ355 Coastal Waters From Freeport To The Matagorda Ship Channel Out 20 Nm-coastal Waters From High Island To Freeport Out 20 Nm- 338 Am Cst Mon Nov 20 2017
Today..East winds 10 to 15 knots. Seas 2 to 3 feet.
Tonight..Southeast winds around 10 knots. Seas 2 feet. A slight chance of showers.
Tuesday..South winds 5 to 10 knots. Seas 2 feet. A slight chance of showers in the morning, then a chance of showers and Thunderstorms in the afternoon.
Tuesday night..East winds 10 to 15 knots becoming northeast 15 to 20 knots after midnight. Seas 2 to 3 feet. A chance of Thunderstorms in the evening. A chance of showers.
Wednesday..Northeast winds 15 to 25 knots becoming north 15 to 20 knots in the afternoon. Seas 2 to 4 feet.
Wednesday night..North winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. Seas 2 to 4 feet.
Thursday..North winds 10 to 15 knots decreasing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet.
Thursday night..North winds 5 to 10 knots. Seas 1 to 2 feet.
Friday..North winds around 5 knots becoming south in the afternoon. Seas 0 to 1 feet.
Friday night..South winds 5 to 10 knots. Seas 1 to 2 feet.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 338 Am Cst Mon Nov 20 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Northeast to east winds today will gradually become south to southeast by Tuesday before the next cold front pushes off the coast Tuesday night or early Wednesday morning. Scattered showers and Thunderstorms will be possible across the coastal waters ahead of the front. Behind the front, caution flags will likely be needed for strengthening north winds and building seas. Conditions are expected to improve by Thursday with light onshore flow becoming established by Friday.

7 Day Forecast for Marine Location Near Jamaica Beach, TX
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location: 29.2, -94.99     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 201128
afdhgx
area forecast discussion
national weather service houston galveston tx
528 am cst Mon nov 20 2017

Aviation
Vfr conditions are expected to prevail through the next 24-30
hours with periods of broken to overcast clouds between
fl150-fl250 today. Light and variable winds this morning inland
will gradually become east to southeast midday and increase 5-8
knots (remaining around 8-10 knots along the coast) as surface
high pressure along the gulf coast slides east. Winds are expected
to become light and variable again overnight. Depending on the
amount of moisture return as winds veer onshore, lower clouds
around fl020-fl025 will be possible at all terminals with patchy
fog at cll, cxo, and lbx tonight through the end of the taf
period. Due to low confidence in how quickly this moisture will
return, have not included any MVFR category restrictions with the
12z package.

Huffman

Prev discussion issued 332 am cst Mon nov 20 2017
discussion...

considerable high cloudiness is moving west to east across the
area tonight, yielding partly cloudy skies. Currently too dry for
any precip across the area with a series of upper level short
waves moving across. The exception could be offshore later today
where we could see a few very light showers developing from mid-
level cloud cover. MAX temps today will be similar to yesterday
with mid-upper 60s expected for most areas, possibly reaching the
lower 70s across SW areas.

Will see some low-level moisture return begin this afternoon as
winds become southeast. This additional moisture with near calm
winds could lead to some patchy fog across SW W areas late mon
night early tues. On tues, expect temps to warm into the mid 70s
with scattered showers developing offshore and near the coast as a
mid upper level trough amplifies over the area. A significant
upper level jet streak will be diving southeast into the area on tue
aft eve from the nw, and lift from this feature could produce
isolated tstms tues aft eve across southeast areas and offshore.

Models are in good agreement that our next cold front will move
across Tuesday night into Wed morning. The chance of precip across
the area should end on Wed morning with the front offshore.

Expect dry and cool conditions for thanksgiving behind the front.

A warmup will begin on Friday as a strong mid upper ridge builds
to our W sw. It appears that MAX temps will likely be close to 80
inland on Saturday ahead of a weak cool front that will move
through Sat night Sun morning. It does not look like we will see
any precipitation with next weekend's weak front.

Wood
marine...

light northeast winds over the coastal waters this morning will
gradually become easterly today and southeasterly tonight as surface
high pressure stretching from texas towards the ohio valley slides
towards the east. Southeast to south winds will continue Tuesday
ahead of a cold front moving off the coast on early Wednesday
morning with moderate offshore flow in its wake likely warranting
caution or advisory flags. Showers and thunderstorms are expected to
develop across the coastal waters ahead of the front on Tuesday,
shifting south as the front clears the waters on Wednesday. Expect
wave heights in the 1-3 feet range ahead of the front, building into
the 4-7 feet range behind the front. Improving conditions are
expected by Thursday with light onshore flow resuming by Friday.

Huffman

Preliminary point temps pops
College station (cll) 67 50 74 51 64 0 10 10 10 10
houston (iah) 68 53 75 55 68 0 10 20 20 10
galveston (gls) 67 61 74 59 69 10 10 30 30 10

Hgx watches warnings advisories
Tx... None.

Gm... None.

Discussion... 33
aviation marine... 14


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GRRT2 9 mi43 min 58°F 63°F1022.5 hPa (+0.0)
LUIT2 11 mi43 min 64°F
GTOT2 13 mi43 min 58°F 70°F
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 18 mi43 min ENE 15 G 18 65°F1022.1 hPa (+0.4)
EPTT2 - 8771013 - Eagle Point, TX 20 mi43 min ENE 15 G 16 57°F 63°F1023.2 hPa (+0.5)
FCGT2 - 8772447 - USCG Freeport, TX 24 mi43 min N 5.1 G 8.9 55°F 69°F1022.3 hPa (+0.0)
KXIH 25 mi28 min SE 14 61°F 41°F
42035 - GALVESTON 22NM East of Galveston, TX 31 mi53 min E 14 G 18 61°F 71°F2 ft1022.6 hPa (+0.5)42°F
RLOT2 - 8770971 - Rollover Pass, TX 33 mi43 min ENE 13 G 15 53°F 61°F1023.1 hPa (+0.5)
MGPT2 - 8770613 - Morgans Point, TX 33 mi43 min ENE 9.9 G 12 54°F 69°F1023.1 hPa (+0.3)
NCHT2 - 8770777 - Manchester, TX 39 mi43 min NNE 4.1 G 5.1 49°F 71°F1022.4 hPa (-0.0)
HIST2 42 mi43 min NE 4.1 G 6 48°F 66°F1023.7 hPa (+0.8)
SGNT2 45 mi43 min N 6 G 8 51°F 68°F1021.6 hPa (-0.4)

Wind History for Galveston Pleasure Pier, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galveston, Scholes Field, TX8 mi51 minNE 1010.00 miFair58°F46°F65%1022.9 hPa

Wind History from GLS (wind in knots)
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Last 24hrN22
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N12N11N9N8N8N8N9NE10NE11NE10NE8NE7N8N10NE7NE8NE9NE9NE10
1 day agoS12SW13SW19
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2 days agoS5SE7S9S9S9S10S12S12S11S9S8S8S11S12S13S15S13S10S11S12S13S13S13S10

Tide / Current Tables for Jamaica Beach, West Bay, Galveston Bay, Texas
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Jamaica Beach
Click for Map
Mon -- 02:40 AM CST     0.94 feet Low Tide
Mon -- 05:11 AM CST     0.98 feet High Tide
Mon -- 06:47 AM CST     Sunrise
Mon -- 08:30 AM CST     Moonrise
Mon -- 02:12 PM CST     -0.01 feet Low Tide
Mon -- 05:23 PM CST     Sunset
Mon -- 07:20 PM CST     Moonset
Mon -- 09:36 PM CST     1.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
110.90.91110.90.80.70.50.30.20-000.10.30.60.811.11.11.1

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Mon -- 02:24 AM CST     -0.54 knots Max Ebb
Mon -- 03:57 AM CST     -0.49 knots Min Ebb
Mon -- 06:47 AM CST     Sunrise
Mon -- 08:30 AM CST     Moonrise
Mon -- 10:00 AM CST     -1.98 knots Max Ebb
Mon -- 02:23 PM CST     0.00 knots Slack
Mon -- 05:22 PM CST     Sunset
Mon -- 05:59 PM CST     2.12 knots Max Flood
Mon -- 07:19 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.2-0.4-0.5-0.5-0.5-0.6-0.8-1.2-1.6-1.9-2-1.9-1.6-1.1-0.30.51.41.92.121.61.20.80.4

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 Houston/Galveston, TX (8,2,3,4)
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Ground Weather Radar Station Houston/Galveston, TX
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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.