Saturday, February17, 2018 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 6:54AMSunset 6:11PM Saturday February 17, 2018 8:50 PM CST (02:50 UTC) Moonrise 8:09AMMoonset 8:01PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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- 624 Pm Cst Sat Feb 17 2018
.dense fog advisory in effect until noon cst Sunday...
Tonight..East winds 5 to 10 knots. Seas 2 to 3 feet. Areas of dense fog. A slight chance of showers.
Sunday..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Areas of dense fog. A slight chance of showers.
Sunday night..Southeast winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Seas 2 to 4 feet. Areas of fog. A slight chance of showers.
Monday..South winds around 15 knots. Seas 3 to 5 feet. Areas of fog. Isolated showers and Thunderstorms.
Monday night..Southeast winds 15 to 20 knots. Seas 4 to 5 feet with occasional seas up to 6 feet. Areas of fog.
Tuesday..Southeast winds 15 to 20 knots. Seas 4 to 5 feet with occasional seas up to 6 feet. Areas of fog. Scattered showers and Thunderstorms.
Tuesday night..Southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 7 feet. Areas of fog. Scattered showers and Thunderstorms.
Wednesday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Areas of fog. Showers and Thunderstorms likely.
Wednesday night..Southeast winds 5 to 10 knots becoming northeast after midnight. Seas 3 to 5 feet. Showers likely and isolated Thunderstorms.
Thursday..Northeast winds 5 to 10 knots becoming east in the afternoon. Seas 2 to 4 feet. A chance of showers and isolated Thunderstorms.
Thursday night..Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Scattered showers and isolated Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 624 Pm Cst Sat Feb 17 2018
Synopsis for high island to matagorda ship channel out 60 nm.. Periods of locally dense sea fog will persist through the weekend. A stationary boundary will become diffuse and onshore winds will redevelop later tonight. A strengthening onshore flow is expected late Sunday as another area of low pressure develops over the central plains.

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 172356
afdhgx
area forecast discussion
national weather service houston galveston tx
556 pm cst Sat feb 17 2018

Aviation
A weak front extended from about liberty to downtown houston and
then along the i-69 corridor to about edna. Showers were beginning
to develop along this feature. Short term guidance shows the
boundary remaining nearly stationary and gradually becoming
diffuse. Low ceilings expected to develop areawide as deep mstr
builds beneath a capping inversion. Lifr ifr CIGS expected late
tonight into Sunday morning with a gradual improvement to MVFR by
afternoon. Sea fog will be an issue along the coast and visibility
will fall below a mile at times at kgls and probably klbx. 43

Prev discussion issued 404 pm cst Sat feb 17 2018
discussion...

scattered showers that developed along the stalled surface boundary
over the coastal counties is continuing to move off to the E this
afternoon while the activity approaching from nc tx appears to be
weakening as it nears the area. Otherwise, we are seeing a few
more breaks in the overcast clouds in between these systems.

Slightly less active weather is expected tomorrow as the frontal
boundary continues to weaken and high pressure becomes more
prominent. Sea fog should return to the bays overnight tomorrow.

Looking ahead, this rather wet unsettled pattern of late is progged
to continue as the subtropical jet remains a dominant feature for
se tx. The persistent upper troffing to our west should allow for
a series of disturbances to move across the region these next
several days. And with the onshore flow staying in place, we will
likely keep at least low rain chances in the forecast as the baseline...

then increasing them with the passage of these shortwaves. One is
timed for weds along with pws ranging from 1.5" - 1.7" for this
same timeframe. Did go with likely pops but holding off with the
mention of heavy rain for now. 41
marine...

a dense fog advisory is currently in effect for the nearshore waters
until 18z Sunday. Both matagorda and galveston bay saw improvement
in visibilities throughout the day as the fog bank retreated, but
expect the return of lowered visibilities this evening. A dense fog
advisory will likely be needed for both bays tonight. The
development of sea fog, especially within the nearshore waters will
be possible through the middle of next week.

Southwesterly winds will turn southeasterly overnight, and which
should also help with the development of sea fog. Sea heights will
remain between 2 to 3 feet through the weekend before increasing to
4 to 6 feet Monday into Tuesday. Wind speeds will pick up as the
pressure gradient tights, and scec criteria will likely be needed in
the gulf waters. The next front is expected to move into SE tx on
Wednesday, but based off the disagreement in model guidance, it is
still unclear whether this front will reach the coast. Trends in the
most recent model solutions reveal the possibility of this front
stalling out inland, which would keep the possibility of sea fog
development continuing through mid-week.

Hathaway

Preliminary point temps pops
College station (cll) 54 71 64 79 66 30 20 20 20 20
houston (iah) 57 74 65 78 67 30 20 20 20 10
galveston (gls) 62 71 64 73 66 20 20 20 20 10

Hgx watches warnings advisories
Tx... None.

Gm... Dense fog advisory until noon cst Sunday for the following
zones: coastal waters from freeport to the matagorda ship
channel out 20 nm... Coastal waters from high island to
freeport out 20 nm.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GRRT2 9 mi50 min SSE 6 G 8.9 66°F 69°F1020.1 hPa (+1.3)
LUIT2 11 mi50 min ESE 5.1 G 7 64°F 1019.9 hPa (+1.3)
GTOT2 13 mi50 min S 4.1 G 6 68°F 62°F1019.8 hPa (+1.3)
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 18 mi50 min S 9.9 G 12 59°F1019.6 hPa (+1.1)
EPTT2 - 8771013 - Eagle Point, TX 20 mi50 min SSW 9.9 G 11 68°F 64°F1020.2 hPa (+1.6)
FCGT2 - 8772447 - USCG Freeport, TX 24 mi50 min E 5.1 G 6 66°F 58°F1020.5 hPa (+1.3)
KXIH 25 mi35 min S 9.9 70°F 70°F
42035 - GALVESTON 22NM East of Galveston, TX 31 mi60 min S 9.7 G 9.7 65°F 62°F2 ft1020.1 hPa (+1.5)65°F
RLOT2 - 8770971 - Rollover Pass, TX 33 mi50 min S 6 G 8 64°F 65°F1020.2 hPa (+1.4)
MGPT2 - 8770613 - Morgans Point, TX 33 mi50 min N 8 G 12 61°F 61°F1020.7 hPa (+2.5)
NCHT2 - 8770777 - Manchester, TX 39 mi50 min N 5.1 G 9.9 62°F 64°F1020.5 hPa (+2.9)
HIST2 42 mi50 min S 6 G 8 65°F 66°F1020.4 hPa (+1.3)
SGNT2 45 mi56 min E 5.1 G 6 66°F 66°F1019.6 hPa

Wind History for Galveston Pleasure Pier, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galveston, Scholes Field, TX8 mi58 minSSE 60.50 miFog66°F66°F100%1020.2 hPa

Wind History from GLS (wind in knots)
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Last 24hrSE6SE9S7S7S7S5S5SE4SE4SE5CalmCalmSW4SW7SW12S12S12S15S12S11S11S6SE6S6
1 day agoSE9SE10S9S8S9S12S13S9S8S5S6S4CalmCalmCalmSW8S7S10S11S14S10S10S9SE8
2 days agoSE10SE9SE9SE11S8SE8SE6SE5SE4SE4SE4SE6SE7SE10S10S13S12S13S11S11S10S8S8SE10

Tide / Current Tables for Jamaica Beach, West Bay, Galveston Bay, Texas
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Jamaica Beach
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Sat -- 01:59 AM CST     0.42 feet Low Tide
Sat -- 06:20 AM CST     0.61 feet High Tide
Sat -- 06:57 AM CST     Sunrise
Sat -- 08:08 AM CST     Moonrise
Sat -- 02:20 PM CST     -0.18 feet Low Tide
Sat -- 06:11 PM CST     Sunset
Sat -- 08:01 PM CST     Moonset
Sat -- 08:54 PM CST     0.61 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.40.40.40.50.60.60.60.50.40.30.1-0-0.1-0.2-0.2-0.10.10.30.50.60.60.60.5

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
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Sat -- 01:51 AM CST     -0.66 knots Max Ebb
Sat -- 04:59 AM CST     -0.25 knots Min Ebb
Sat -- 06:56 AM CST     Sunrise
Sat -- 08:07 AM CST     Moonrise
Sat -- 10:47 AM CST     -1.24 knots Max Ebb
Sat -- 02:48 PM CST     0.00 knots Slack
Sat -- 05:58 PM CST     1.44 knots Max Flood
Sat -- 06:10 PM CST     Sunset
Sat -- 08:00 PM CST     Moonset
Sat -- 10:37 PM CST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-0.6-0.7-0.5-0.4-0.3-0.4-0.6-0.8-1.1-1.2-1.2-1.2-0.9-0.50.10.81.31.41.310.60.2-0.1

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 (21,6,7,8)
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Ground Weather Radar Station Houston/Galveston, TX
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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 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.