Thursday, December5, 2019
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Marine Weather and Tides
Clear Lake Shores, 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 6:59AMSunset 5:22PM Thursday December 5, 2019 4:36 PM CST (22:36 UTC) Moonrise 1:42PMMoonset 12:52AM Illumination 65% Phase: Waxing Gibbous; Moon at 9 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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GMZ335 Galveston Bay- 316 Pm Cst Thu Dec 5 2019
Tonight..Southeast winds 5 to 10 knots becoming south after midnight. Bay waters smooth. Patchy fog after midnight.
Friday..West winds 5 to 10 knots becoming northwest in the afternoon. Bay waters smooth becoming smooth to slightly choppy in the afternoon. Patchy fog early in the morning.
Friday night..North winds around 10 knots. Bay waters smooth to slightly choppy.
Saturday..Northeast winds 5 to 10 knots. Bay waters smooth.
Saturday night..East winds 5 to 10 knots. Bay waters smooth.
Sunday..South winds 5 to 10 knots. Bay waters smooth.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Monday..Southwest winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the late morning and afternoon.
Monday night..Southwest winds 5 to 10 knots becoming north 15 to 20 knots after midnight. Bay waters smooth becoming choppy after midnight. A chance of showers.
Tuesday..North winds 15 to 20 knots. Bay waters choppy. A chance of showers.
Tuesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 316 Pm Cst Thu Dec 5 2019
Synopsis for high island to matagorda ship channel out 60 nm.. The potential for areas of patchy fog developing tonight over the bays, especially matagorda bay, and near the coast is increasing. Patchy fog looks to start developing around midnight then expanding through the night and into the early morning hours. A weak front is expected to push through tomorrow morning around 10 am bringing in drier air that will help dissipate the fog. This front may bring a few showers in the gulf waters tomorrow afternoon, but the main impact from the frontal passage will be the northerly flow in its wake. The winds may approach caution flag criteria in the gulf waters tomorrow night, but it will be marginal with three to four foot seas. Light northeasterly flow begins on Saturday transitioning to an onshore flow Sunday into Monday. Another front may pass through the region Monday night with a better chance of showers with it and a moderate to strong offshore flow developing in its wake.


7 Day Forecast for Marine Location Near Clear Lake Shores, TX
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location: 29.55, -95     debug


Area Discussion for - Houston/Galveston, TX
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FXUS64 KHGX 052102 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 302 PM CST Thu Dec 5 2019

SHORT TERM [Through Friday].

The low clouds that were over the northern portion of the region this morning has clear out allowing for some higher wind gusts of up to 20 to 25 kts to reach the surface. Otherwise, expect mostly quiet weather through this evening as southeasterly flow increases. This southeasterly flow will bring increased moisture into the region tonight leading to the first hurdle of the short term forecast, fog. Low temperatures tonight will be in the low to mid 60s across the southern and western portions of the region with dew points also right that range. Thus, HREF and SREF guidance is picking up on patchy fog and areas of dense fog, especially in Colorado, Jackson, Wharton, and Matagorda counties beginning around 9z tonight. The threat of fog extends up along the coast through the night possibly reaching into southern Harris county by sunrise. Water temperatures near the coast are in the low to mid 60s, combined with the southeast flow will result in the threat of sea fog in the Bays and near the coast. Now when the fog lifts out will result on the frontal passage that is expected late tonight into early tomorrow morning, which is the second hurdle of the forecast.

Latest guidance has slowed the FROPA by a few hours with it reaching College Station around 12 to 13z, Houston 14 to 15z, and the coast around 16 to 17z. Any fog that forms will dissipate with the frontal passage as the drier air mixes in. This front will be mainly felt with a wind shift and some lower clouds, with really the only chance of precipitation out in the Gulf waters. Temperatures tomorrow may be a few degrees cooler than today, but overall will not be much of a change. Skies becoming mostly clear after the front resulting in lows tomorrow night being around 10 degrees cooler than tonight.

Fowler

LONG TERM [Friday Night through Wednesday].

Drier and cooler air will continue to filter into SE Texas Friday night in the wake of a cold frontal passage. Low temperatures will dip into the mid 40s to low 50s areawide; lowest temperatures will be experienced along the northern and western counties of the CWA. Northerly winds will decrease overnight as the pressure gradient weakens across the region. Saturday, high pressure will build across Texas and result in dry, cool and pleasant weather conditions. Sunday, southerly winds return as high pressure moves eastward. The onshore flow will begin to transport moist warm air from the Gulf, with PWAT values increasing up to 1.0-1.3 inches by Sunday afternoon/evening. Additionally, the warmer air mass will rise the temperatures back to the 70s Sunday afternoon.

Moisture advection is expected to remain in place Monday, as a stronger mid to upper level trough moves eastward from the Rockies and across the Central Plains. Associated cold front still looks to move across SE Texas sometime Monday night or early Tuesday morning, with a pre-frontal wind shift occuring a few hours ahead of the front. This feature is expected to bring in better shower activity this time around; however, there continues to be inconsistencies in the models, thus timing and coverage of showers/thunderstorms may vary a bit in the next few days. In the wake of the front, colder air will move across SE Texas decreasing overall low/high temperatures.

Mid week, rain chances could continue across SE Texas as another shortwave/disturbance moves across Texas. Model solutions widely vary at the end of the forecast period, thus, kept modest PoPs for this timeframe. 24

MARINE.

The potential for areas of patchy fog developing tonight over the Bays, especially Matagorda Bay, and near the coast is increasing. Ocean temperatures are in the low to mid 60s with dew point temperatures around the same range, which combined with the onshore flow tonight will lead to the areas of patchy fog. The fog looks to start developing around midnight then expanding through the night and into the early morning hours. A weak front is expected to push through tomorrow morning around 10 AM bringing in drier air that will help dissipate the fog. This front may bring a few showers in the Gulf waters tomorrow afternoon, but the main impact from the frontal passage will be the northerly flow in its wake. The winds may approach caution flag criteria in the Gulf waters tomorrow night, but it will be marginal with three to four foot seas. Light northeasterly flow begins on Saturday transitioning to an onshore flow Sunday into Monday. Another front may pass through the region Monday night with a better chance of showers with it and a moderate to strong offshore flow developing in its wake.

Fowler

PRELIMINARY POINT TEMPS/POPS. College Station (CLL) 56 68 46 67 47 / 0 10 0 0 0 Houston (IAH) 61 72 52 67 50 / 10 10 0 0 0 Galveston (GLS) 64 71 56 64 58 / 10 10 0 0 0

HGX WATCHES/WARNINGS/ADVISORIES. TX . NONE. GM . NONE.

Short Term Discussion . 11 Long Term Discussion . 24 Aviation/Marine . 11


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EPTT2 - 8771013 - Eagle Point, TX 6 mi54 min SE 7 G 8 66°F 64°F1015 hPa
MGPT2 - 8770613 - Morgans Point, TX 9 mi54 min SE 8 G 11 67°F 64°F1015.6 hPa
GRRT2 18 mi54 min S 8.9 G 11 67°F 65°F1015 hPa
NCHT2 - 8770777 - Manchester, TX 19 mi54 min SSW 7 G 12 72°F 68°F1014.7 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 20 mi54 min SE 11 G 13 67°F 65°F1014.7 hPa
GTOT2 20 mi54 min SSE 5.1 G 9.9 68°F 65°F1015.4 hPa
RLOT2 - 8770971 - Rollover Pass, TX 26 mi48 min SE 9.9 G 12 66°F 62°F1015.9 hPa
HIST2 32 mi54 min SE 4.1 G 8 68°F 64°F1015.8 hPa
LUIT2 33 mi48 min SE 7 G 9.9 68°F 1016.7 hPa
KXIH 36 mi21 min SE 11 68°F 61°F
42035 - GALVESTON 22NM East of Galveston, TX 38 mi36 min SE 7.8 G 9.7 1016.7 hPa (-1.7)
FCGT2 - 8772447 - USCG Freeport, TX 45 mi48 min SE 5.1 G 8 68°F 65°F
FPST2 45 mi54 min ESE 8 G 8.9 67°F 67°F1015.1 hPa

Wind History for Eagle Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX10 mi46 minSSE 1010.00 miMostly Cloudy72°F57°F61%1015.2 hPa
Houston, Pearland Regional Airport, TX13 mi43 minS 910.00 miFair72°F57°F61%1015.7 hPa
Houston, Houston Hobby Airport, TX16 mi43 minS 1210.00 miMostly Cloudy73°F59°F62%1015.7 hPa
Galveston, Scholes Field, TX21 mi44 minSE 1010.00 miFair70°F62°F76%1015.6 hPa
John Dunn Helistop, TX24 mi41 minVar 4 G 1610.00 miPartly Cloudy75°F59°F57%1014.9 hPa

Link to 5 minute data for KEFD

Wind History from EFD (wind in knots)
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Last 24hrN3CalmCalmCalmCalmCalm--Calm--CalmCalm--Calm--CalmCalmE5E6SE6E6S9S9S12S10
1 day agoSE6SE4--S4SE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN3NE4NE4N4N5N5N5N6N3
2 days agoN6NW3NE3NE3CalmCalmCalm--CalmCalmCalmCalmCalmCalmCalm--SE4SE6S7--S4----SW6

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Thu -- 12:53 AM CST     Moonset
Thu -- 06:00 AM CST     0.58 feet High Tide
Thu -- 07:00 AM CST     Sunrise
Thu -- 01:08 PM CST     0.26 feet Low Tide
Thu -- 01:42 PM CST     Moonrise
Thu -- 05:10 PM CST     0.38 feet High Tide
Thu -- 05:21 PM CST     Sunset
Thu -- 11:51 PM CST     0.17 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.20.30.40.50.60.60.60.50.50.40.30.30.30.30.30.40.40.40.30.30.20.20.2

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Thu -- 12:52 AM CST     Moonset
Thu -- 03:38 AM CST     -0.00 knots Slack
Thu -- 06:58 AM CST     Sunrise
Thu -- 07:42 AM CST     -1.24 knots Max Ebb
Thu -- 12:09 PM CST     0.00 knots Slack
Thu -- 01:23 PM CST     0.15 knots Max Flood
Thu -- 01:41 PM CST     Moonrise
Thu -- 02:47 PM CST     -0.00 knots Slack
Thu -- 05:20 PM CST     Sunset
Thu -- 06:05 PM CST     -0.42 knots Max Ebb
Thu -- 08:52 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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1.31.10.80.3-0.2-0.6-1-1.2-1.2-1.1-0.7-0.3-00.10.1-0-0.2-0.4-0.4-0.4-0.200.40.7

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (17,4,5,8)
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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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