Tuesday, December10, 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 Tuesday December 10, 2019 5:41 PM CST (23:41 UTC) Moonrise 4:28PMMoonset 5:24AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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:201912110930;;157155 Fzus54 Khgx 102109 Cwfhgx Coastal Waters Forecast National Weather Service Houston/galveston Tx 309 Pm Cst Tue Dec 10 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. Gmz350-355-110930- Coastal Waters From Freeport To Matagorda Ship Channel Tx Out 20 Nm-coastal Waters From High Island To Freeport Tx Out 20 Nm- 309 Pm Cst Tue Dec 10 2019
.gale warning in effect until midnight cst tonight...
.small craft advisory in effect from midnight cst tonight through late tonight...
Tonight..North winds 25 to 35 knots with gusts above 40 knots...slowly diminishing to 20 to 25 knots after midnight. Seas 5 to 7 feet with occasional seas up to 8 feet. A slight chance of showers early in the evening.
Wednesday..Northeast winds near 20 knots diminishing to 15 to 20 knots. Seas 3 to 5 feet.
Wednesday night..Northeast winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. Seas 3 to 4 feet.
Thursday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet. A slight chance of showers late in the afternoon.
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.
Friday..North winds 5 to 10 knots becoming southwest in the afternoon. Seas 2 to 3 feet.
Friday night..Southwest winds around 10 knots. Seas 1 to 2 feet.
Saturday..West winds 5 to 10 knots becoming south in the afternoon. Seas 1 to 2 feet.
Saturday night..Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Sunday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet. A slight chance of showers and isolated Thunderstorms late in the afternoon.
Sunday night..South winds 10 to 15 knots. Seas 3 to 5 feet. A chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 309 Pm Cst Tue Dec 10 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Strong north winds and elevated seas can be expected overnight. Winds and seas will slowly begin diminishing late tonight and Wednesday. Mariners should expect low water conditions in the northern parts of the bays during the next low tide cycle. With high pressure situated over the eastern seaboard and lower pressure in the west central gulf, northeast to east winds will prevail through Friday. Onshore flow should resume late Saturday in advance of the next front expected Monday or Monday night.


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 102105 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 305 PM CST Tue Dec 10 2019

SHORT TERM (Tonight through Wednesday).

Ongoing band of showers should continue its gradual eastward push and should mostly be out of the CWA around sunset. Otherwise, the combination of continued cloudiness, wet ground and winds (albeit lighter overnight) should limit the overall temp fall. Trimmed the wind advisory to only be in effect closer to the coast where frequent 25-40mph gusts will be prevalent). As the mid level trof axis passes thru and column begins to dry, we should see gradual clearing skies during the morning hours Wed. 47

LONG TERM (Wednesday night through next Tuesday).

Thursday's northeasterly winds weaken and skies to remain clear per the region still being under the influence of northeastern surface ridging exiting into the U.S. Mid Atlantic. The resident cold air mass will be best felt Thursday morning; low to mid 30s across the northern tier to lower 50s along the immediate coast. A shortwave trough swinging across the Red River Valley Thursday and the passage of a weak longwave trough Friday will only fortify this resident cooler, drier air mass over Southeast Texas while keeping winds light and variable. Thursday's light northeast winds will veer around to the southwest Friday as temperatures fall back into the 40s shortly after sunset Thursday night/Friday morning . the afternoon to sluggishly warm into the 50s for a second afternoon in-a-row. Southwesterly winds will significantly increase Friday into the weekend's temperatures where days will quickly be back up into the 70s by Friday. Not anticipating the type of 80s warmth experienced yesterday over the dry weekend but, per mostly sunny skies and a moderate southerly wind on Sunday, more humid days will again warm back up into the areawide mid to upper 70s with morning readings coming in a couple of degrees on either side of 50 F going into early next week.

The next weather maker will be the next cold frontal passage in 6 days; Monday. The approach of this front will make for a warm, humid overcast Sunday with increasing interior light shower (sprinkle) chances commencing as early as Sunday afternoon . precipitation probabilities will increase to likely probs going through Monday morning and afternoon. The main difference with this frontal passage will be the development of more areal coverage thunderstorms. GFS prog soundings support enough mid-layer cooling to produce lower 3km 5 to 6 C lapse rates in tandem with lowering shear through the warmth of the day . under 15 knots in the lower few kilometers when the best thermodynamics and frontal forcing comes through during the day. Whether the best thermo/shear are in phase (or not), there will likely still be more widespread thunder with Monday's convection. A cool, wet day Monday will lead to a chilly morning in the mid 30s (north) to mid 40s at the coast with gradually clearing skies Tuesday morning. Tuesday will be a winter-like day; stout north winds as full bore cold air advection keeps the mostly sunny day in the nippy 50s. 31

Aviation (18Z TAFs).

Ceilings should continue holding in the 600-1600ft range for much of the afternoon as another band of shra makes its way across the area from the west. Precip should be tapering off along the I-45 terminals 22-24z. Gusty north winds will persist into the evening before beginning a slow downward trend inland, but remain up at the coast overnight. Moisture trapped under the inversion should keep ceilings between 1500-2500ft thru the night. Once the upper trof axis pushes east of the area and mixing/column drying occurs Wed morning we'll see skies gradually clear out. 47

MARINE.

Strong northerly winds and elevated seas will persist overnight. Will keep current advsy/gale flags in place going into the overnight hours then hopefully begin downgrading after midnight and into Wed as speeds/seas begin to slowly diminish. Water levels in northern parts of the bays are currently behaving themselves . and will be going into high tide in the next 6-8 hours. The next couple shifts may need to monitor for a short duration low water advisory as we head into low tide Wed morning and water levels bottom out.

Broad high pressure over the eastern seaboard and troffiness across the Yucatan and wcntl Gulf will maintain ne/e flow thru Fri. A more prevalent onshore flow resumes late Sat and persists until the next front pushes off the coast Mon or Mon night. 47

PRELIMINARY POINT TEMPS/POPS. College Station (CLL) 37 58 35 58 37 / 10 0 0 0 0 Houston (IAH) 40 57 39 59 43 / 10 0 0 10 10 Galveston (GLS) 46 56 50 59 53 / 20 0 0 10 20

HGX WATCHES/WARNINGS/ADVISORIES. TX . Wind Advisory until 9 PM CST this evening for the following zones: Chambers . Coastal Brazoria . Coastal Galveston . Coastal Harris . Coastal Jackson . Coastal Matagorda.

Small Craft Advisory until 3 AM CST Wednesday for the following zones: Galveston Island and Bolivar Peninsula . Matagorda Islands.

Wind Advisory until 3 AM CST Wednesday for the following zones: Brazoria Islands . Galveston Island and Bolivar Peninsula . Matagorda Islands.

Gale Warning until midnight CST tonight for the following zones: Brazoria Islands.

GM . Small Craft Advisory until 3 AM CST Wednesday for the following zones: Galveston Bay . Matagorda Bay.

Gale Warning 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 . 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.

Small Craft Advisory from midnight tonight to 3 AM CST Wednesday 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 . 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.



Short/Aviation/Marine . 47 Long/Fire . 31


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GRRT2 9 mi77 min NE 27 G 32 53°F 63°F1021.1 hPa
LUIT2 11 mi71 min NNE 27 G 33 55°F 63°F1022.5 hPa
GTOT2 13 mi77 min NE 17 G 23 53°F 64°F1021.7 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 18 mi77 min NE 26 G 28 53°F 64°F1020.4 hPa
EPTT2 - 8771013 - Eagle Point, TX 20 mi77 min NNE 22 G 29 54°F 64°F1021.7 hPa
FCGT2 - 8772447 - USCG Freeport, TX 24 mi71 min NNE 13 G 19 53°F 66°F
FPST2 24 mi77 min N 19 G 24 54°F 67°F1021.1 hPa
KXIH 25 mi46 min NNE 34 54°F 50°F
42035 - GALVESTON 22NM East of Galveston, TX 31 mi41 min NNE 27 G 35 1022.9 hPa (+2.5)
MGPT2 - 8770613 - Morgans Point, TX 33 mi77 min NNE 12 G 15 52°F 65°F1022.7 hPa
RLOT2 - 8770971 - Rollover Pass, TX 33 mi71 min NNE 17 G 20 53°F 58°F1022.6 hPa
NCHT2 - 8770777 - Manchester, TX 39 mi77 min NNE 9.9 G 19 50°F 66°F1022.9 hPa
HIST2 42 mi77 min NE 12 G 17 51°F 63°F1021.6 hPa
SGNT2 45 mi77 min N 12 G 19 53°F 65°F1021.4 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 mi49 minNNE 22 G 3210.00 miOvercast and Breezy54°F50°F87%1022.4 hPa

Link to 5 minute data for KGLS

Wind History from GLS (wind in knots)
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1 day agoSE5SE7S8S8S9S11S6S9S7S11S10S11S13S8S7S8S10S11S11--S8S9SE8SE7
2 days agoSE6SE6SE4E6E6E4E4SE5E6E7E4E3E5E6E7E7SE8SE8SE7SE7SE8SE7SE7SE5

Tide / Current Tables for Jamaica Beach, West Bay, Texas
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Jamaica Beach
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Tue -- 03:28 AM CST     0.82 feet High Tide
Tue -- 05:23 AM CST     Moonset
Tue -- 07:03 AM CST     Sunrise
Tue -- 12:01 PM CST     -0.13 feet Low Tide
Tue -- 04:28 PM CST     Moonrise
Tue -- 05:22 PM CST     Sunset
Tue -- 07:10 PM CST     0.95 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.70.80.80.80.80.70.50.30.20-0.1-0.1-0.10.10.30.50.70.90.90.90.90.80.8

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
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Tue -- 12:21 AM CST     -0.48 knots Max Ebb
Tue -- 01:27 AM CST     -0.46 knots Min Ebb
Tue -- 05:23 AM CST     Moonset
Tue -- 07:02 AM CST     Sunrise
Tue -- 07:49 AM CST     -1.96 knots Max Ebb
Tue -- 12:11 PM CST     0.00 knots Slack
Tue -- 03:43 PM CST     2.15 knots Max Flood
Tue -- 04:27 PM CST     Moonrise
Tue -- 05:21 PM CST     Sunset
Tue -- 10:10 PM CST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-0.5-0.5-0.6-0.9-1.3-1.7-1.9-2-1.8-1.5-0.9-0.20.71.622.11.91.51.10.70.40-0.2

Weather Map
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GEOS Local Image of    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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Wind Forecast for Houston/Galveston, TX (18,4,5,8)
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Ground Weather Radar Station Houston/Galveston, TX
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Gulf Stream Current


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