Wednesday, December11, 2019
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Marine Weather and Tides
Jamaica Beach, TX

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:01AMSunset 5:22PM Wednesday December 11, 2019 9:31 PM CST (03:31 UTC) Moonrise 5:13PMMoonset 6:23AM Illumination 100% Phase: Full Moon; Moon at 15 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 Expires:201912121015;;206531 Fzus54 Khgx 112122 Cwfhgx Coastal Waters Forecast National Weather Service Houston/galveston Tx 322 Pm Cst Wed Dec 11 2019 Upper Texas Coastal Waters From High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves...along With The Occasional Height Of The Average Highest 10 Percent Of The Waves. Gmz350-355-121015- Coastal Waters From Freeport To Matagorda Ship Channel Tx Out 20 Nm-coastal Waters From High Island To Freeport Tx Out 20 Nm- 322 Pm Cst Wed Dec 11 2019
.small craft should exercise caution...
Tonight..Northeast winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. Seas 3 to 5 feet.
Thursday..Northeast winds 10 to 15 knots. Seas 3 to 5 feet.
Thursday night..Northeast winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Seas 2 to 4 feet. A slight chance of showers in the evening.
Friday..North winds around 5 knots becoming southwest in the afternoon. Seas 2 to 3 feet.
Friday night..Southwest winds around 10 knots becoming west after midnight. Seas 2 to 3 feet.
Saturday..Northwest winds 5 to 10 knots becoming southeast in the afternoon. Seas 2 to 3 feet.
Saturday night..Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Sunday..South winds 10 to 15 knots. Seas 3 to 5 feet. A slight chance of showers late in the afternoon.
Sunday night..South winds 10 to 15 knots. Seas 3 to 5 feet. A slight chance of showers early in the evening, then a chance of showers in the late evening and early morning. Showers likely and a slight chance of Thunderstorms late.
Monday..Southwest winds 10 to 15 knots becoming northwest 15 to 20 knots in the afternoon. Seas 4 to 5 feet with occasional seas up to 6 feet. A slight chance of Thunderstorms in the morning. Showers likely. A chance of Thunderstorms in the afternoon.
Monday night..North winds 20 to 25 knots. Seas 4 to 6 feet with occasional seas up to 7 feet. A slight chance of Thunderstorms in the evening. A slight chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 322 Pm Cst Wed Dec 11 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Winds and seas will slowly diminish later tonight. With high pressure situated over the eastern seaboard and lower pressure in the yucatan and west central gulf, northeast to east winds will prevail through Thursday night. Onshore winds return to the area over the weekend. Another strong cold front is expected to move through the area on Monday.


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 112352 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 552 PM CST Wed Dec 11 2019

DISCUSSION.

Updated for the 00Z TAF issuance.

AVIATION.

VFR conditions will prevail tonight. Ceilings could lower to MVFR from early Thursday morning to around mid morning. Light easterly winds expected tonight, becoming south to southeasterly Thursday afternoon ahead of an approaching short wave from Rockies. An increase in low level moisture will result in partly to mostly cloudy skies on Thursday with a slight chance in rain showers over the Gulf waters. 24

PREV DISCUSSION. /ISSUED 314 PM CST Wed Dec 11 2019/

SHORT TERM [Through Thursday] .

Quiet wx should persist through the period as high pressure gradually moves off to the east. Look for a transition from mostly clear skies to partly-mostly cloudy later tonight and Thurs as cloudiness begins moving back inland from the Gulf. Other than some isolated showers 40-60nm offshore late Thurs afternoon, no rainfall is expected. 47

LONG TERM [Thursday Night Through Wednesday] .

The start of the long term will be dominated by a series of shortwaves embedded in a broad upper level low over most of the south central CONUS. These systems will generally not be noticeable as they will just keep the cooler to near seasonal weather in place through the weekend and bring some partly cloudy skies near the coast. Temperatures Thursday night will be slightly warmer than what you will see tonight. The warming trend continues on Friday as high temperatures will get into the low 70s across the region, so about 10 degrees warmer than what is expected tomorrow. A weak cold front associated with one of the passing shortwaves will move through the region Friday night into Saturday morning, but you probably won't even notice it. The biggest indication of the frontal passage will be a slight northerly wind during the day on Saturday, and that the warming trend stalls on Saturday with highs very similar to what will be seen on Friday. But that warming trend picks back up on Sunday with most of the region getting into the mid to upper 70s. But don't get too excited about the warmer temperatures cause a stronger cold front is looking to push through the region on Monday.

The aforementioned cold front is associated with a low pressure system forming in the Central Plains Sunday night. The cold front will push through southeast Texas as this low pushes up toward the Ohio River Valley, but guidance has not settled on the timing of this cold front passage. The EC brings the cold front through Monday morning, while the GFS is slower and not bringing it through until Monday evening. Both of these solutions will bring increased showers and thunderstorms to the region with even some thunderstorms possible, but the timing of the front will really determine the high temperature on Monday. EC is cooler since it brings the front through before daytime heating, while the GFS still has WAA during the daytime hours. In either solution precipitation is out of here Tuesday morning, and high temperatures will be back into the mid to upper 50s Tuesday and Wednesday.

Fowler

MARINE .

Planning to extend the current SCEC/SCA flags in the Gulf with winds holding steady 17-22kt and 5-7 foot seas offshore. Would anticipate gradual improvement later tonight. Otherwise, ne/e flow will persist into early Friday as a trof/surface low moves to the north then eventually northeast. Winds will gradually back to more of a westerly direction as this feature makes its way toward the northeastern Gulf coast. There's some uncertainty in regards to wind directions Saturday . as GFS want to push a weak front into the waters. Other guidance shows a general weak or southerly flow. Should mostly be a mute point anyway considering the light speeds & low seas. Onshore flow should become more prevalent Sunday and Sunday night ahead of the next stronger cold front on Monday. A small craft advsy will likely be needed in the wake of that front. 47

PRELIMINARY POINT TEMPS/POPS. College Station (CLL) 37 60 44 70 44 / 0 0 10 0 0 Houston (IAH) 39 61 48 70 49 / 0 0 10 10 0 Galveston (GLS) 48 59 56 67 57 / 0 0 10 10 0

HGX WATCHES/WARNINGS/ADVISORIES. TX . NONE. GM . SMALL CRAFT SHOULD EXERCISE CAUTION until midnight CST tonight for the following zones: Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM . Coastal waters from High Island to Freeport TX out 20 NM.

Small Craft Advisory until midnight CST tonight for the following zones: Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM . Waters from High Island to Freeport TX from 20 to 60 NM.



Aviation . 24


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GRRT2 9 mi43 min ENE 17 G 20 54°F 59°F1029 hPa
LUIT2 11 mi43 min NE 15 G 17 55°F 62°F1030.3 hPa
GTOT2 13 mi43 min E 8 G 15 54°F 62°F1029.2 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 18 mi49 min NE 19 G 22 54°F 59°F1028.2 hPa
EPTT2 - 8771013 - Eagle Point, TX 20 mi49 min NE 17 G 20 54°F 58°F1029 hPa
FCGT2 - 8772447 - USCG Freeport, TX 24 mi43 min N 8 G 11 51°F 61°F
FPST2 24 mi43 min N 8.9 G 11 53°F 63°F1028.9 hPa
KXIH 25 mi16 min NE 17 G 24 55°F 41°F
42035 - GALVESTON 22NM East of Galveston, TX 31 mi21 min ENE 18 G 21 1029.8 hPa
MGPT2 - 8770613 - Morgans Point, TX 33 mi43 min NE 7 G 8.9 51°F 63°F1029.8 hPa
RLOT2 - 8770971 - Rollover Pass, TX 33 mi43 min NE 12 G 13 51°F 56°F1029.5 hPa
NCHT2 - 8770777 - Manchester, TX 39 mi43 min NE 4.1 G 5.1 49°F 65°F1029.4 hPa
HIST2 42 mi49 min NNE 5.1 G 6 46°F 60°F1029.1 hPa
SGNT2 45 mi43 min N 6 G 8.9 49°F 61°F1029.1 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 mi39 minNNE 1310.00 miFair53°F39°F59%1029.7 hPa

Link to 5 minute data for KGLS

Wind History from GLS (wind in knots)
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2 days agoS9S11S6S9S7S11S10S11S13S8S7S8S10S11S11--S8S9SE8SE7SE5SE7SE7SE9

Tide / Current Tables for Jamaica Beach, West Bay, Galveston Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
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Wed -- 06:22 AM CST     Moonset
Wed -- 07:03 AM CST     Sunrise
Wed -- 08:01 AM CST     -2.10 knots Max Ebb
Wed -- 12:37 PM CST     0.00 knots Slack
Wed -- 04:10 PM CST     2.32 knots Max Flood
Wed -- 05:11 PM CST     Moonrise
Wed -- 05:21 PM CST     Sunset
Wed -- 10:51 PM CST     -0.00 knots Slack
Wed -- 11:14 PM CST     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.5-0.6-0.7-0.9-1.3-1.7-2-2.1-2-1.7-1.2-0.50.41.322.32.21.81.30.90.50.2-0

Weather Map
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wmap_A
GEOS Local Image of SouthCentralPlains    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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (22,6,7,8)
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Ground Weather Radar Station Houston/Galveston, TX
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Gulf Stream Current


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