Sunday, December8, 2019
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Marine Weather and Tides
Bolivar Peninsula, 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 Sunday December 8, 2019 9:32 PM CST (03:32 UTC) Moonrise 3:13PMMoonset 3:29AM Illumination 92% Phase: Waxing Gibbous; Moon at 12 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- 916 Pm Cst Sun Dec 8 2019
Rest of tonight..South winds 5 to 10 knots. Bay waters smooth.
Monday..South winds 5 to 10 knots increasing to around 10 knots in the afternoon. Bay waters smooth. A slight chance of showers in the late morning and early afternoon. A chance of showers and isolated Thunderstorms late in the afternoon.
Monday night..South winds 5 to 10 knots becoming southwest after midnight. Bay waters smooth. A chance of showers early in the evening. Isolated Thunderstorms. Showers in the late evening and overnight.
Tuesday..North winds 15 to 20 knots becoming 15 to 25 knots in the afternoon. Bay waters choppy. Showers and isolated Thunderstorms.
Tuesday night..North winds 15 to 20 knots. Bay waters choppy. A chance of showers in the evening. A slight chance of showers after midnight.
Wednesday..North winds 15 to 20 knots becoming northeast 10 to 15 knots in the afternoon. Bay waters choppy becoming slightly choppy in the afternoon.
Wednesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy.
Thursday..Northeast winds 10 to 15 knots. Bay waters slightly choppy.
Thursday night..Northeast winds 5 to 10 knots. Bay waters smooth.
Friday..North winds 5 to 10 knots. Bay waters smooth.
Friday night..North winds around 5 knots becoming northwest after midnight. Bay waters smooth.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 916 Pm Cst Sun Dec 8 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore flow will strengthen ahead of a cold front moving across the waters Tuesday morning. Rain or showery weather will be associated with the approach and passage of this front early Tuesday. Winds and seas will reach advisory criteria in the wake of the front from Tuesday afternoon into Wednesday morning.


7 Day Forecast for Marine Location Near Bolivar Peninsula, TX
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location: 29.49, -94.56     debug


Area Discussion for - Houston/Galveston, TX
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FXUS64 KHGX 090035 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 635 PM CST Sun Dec 8 2019

AVIATION [00Z TAF Issuance]. VFR across the area except at GLS at 00z . low level moisture increasing on the southerly winds and expect low clouds MVFR-IFR decks to develop tonight with this WAA pattern. Guidance varies a good deal on how low ceilings get and have followed in the previous vein with 900-1600 ft ceilings being the dominate heights after midnight. Fog threat still there but mainly in the western counties so no significant visibility restrictions for the terminals. Southwesterly flow Monday morning with a strong inversion in place and improvement in ceilings should be slow through 18z. A few sprinkles possible over the south but again no impacts. As flow relax Monday afternoon and backs expect that hazy conditions near the coast may expand inland and sea fog possible near GLS. 45

PREV DISCUSSION /Issued 404 PM CST Sun Dec 8 2019/.

SHORT TERM(Tonight through Tomorrow Night). Stout return flow as the onshore pressure gradient tightens ahead of the arrival of a late Monday cold front. Moisture levels will be on the rise as dew points increase into the low to mid 60s. This will create a mild evening per more humidity and increasing cloud cover. Enhanced lower level southerlies should provide enough mixing to maintain a lower stratus deck versus that of a return of (more widespread) dense fog overnight tonight. There may be some patchy fog development west of metro but likely nothing as widespread or as thick as in recent mornings. While the threat is low, there could be some patchy 3 to 4 mile visibility- restricting interior fog with denser fog forming over the upper reaches of both bays/nearshore waters shortly after midnight. 31

LONG TERM [Monday Night through Sunday]. Pattern change on the way for the middle of the new week as a pair of potent mid level lows (one currently over the nrn Rockies and the other off the CA coast) carves out a large trough over the eastern half of the U.S. This will allow associated cold front to surge southward across southeast Texas starting Monday evening. Expect the front to enter the nrn counties mid to late evening and move off the coast prior to sunrise tuesday morning. This will bring a noticeable return of colder air with brisk north winds and wind chills Tuesday morning in the 30s across the northern areas. Rain will increase in coverage Monday night and Tuesday as deep ascent from the southern stream system overspreads residual moisture behind the front. Lapse rates may be steep enough to support isolated elevated thunderstorms, although overall instability looks rather meager. The coldest air will settle in Tuesday night/Wednesday as clouds and rain push east with the upper system, with low temperatures Wednesday morning dipping to near or just below freezing over the far northern locales, and near 40 to the coast.

The remainder of the week will see a return of sun and a bit cooler than normal temperatures as zonal flow aloft becomes established into the weekend. Max temps will slowly moderate with highs in the lower 60s by Friday, with a return of 70 max temps next weekend. 48

PRELIMINARY POINT TEMPS/POPS.

College Station (CLL) 61 83 44 48 34 / 0 10 90 90 10 Houston (IAH) 64 82 52 56 39 / 10 10 90 90 30 Galveston (GLS) 65 79 59 63 45 / 10 20 80 90 40

HGX WATCHES/WARNINGS/ADVISORIES.

TX . None. GM . None.



AVIATION . 45


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RLOT2 - 8770971 - Rollover Pass, TX 3 mi63 min S 8 G 11 66°F 63°F1013.9 hPa
HIST2 12 mi69 min SSE 5.1 G 6 65°F 64°F1013.7 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 13 mi69 min S 9.9 G 9.9 68°F 65°F1012.9 hPa
GTOT2 17 mi69 min S 6 G 11 68°F 65°F1013.7 hPa
42035 - GALVESTON 22NM East of Galveston, TX 19 mi43 min SSE 7.8 G 7.8 2 ft1015 hPa
EPTT2 - 8771013 - Eagle Point, TX 19 mi69 min SSE 8 G 9.9 67°F 64°F1013.2 hPa
GRRT2 22 mi69 min SSW 6 G 8 66°F 65°F1013.4 hPa
KXIH 22 mi38 min S 8.9 G 14 70°F 66°F
MGPT2 - 8770613 - Morgans Point, TX 26 mi69 min SSE 4.1 G 7 65°F 65°F1013.5 hPa
SRST2 - Sabine Pass, TX 31 mi33 min SSE 7 G 8 65°F 1014.2 hPa (-0.6)65°F
SBPT2 - 8770570 - Sabine Pass North, TX 40 mi69 min SSE 7 G 9.9 66°F 66°F1016.3 hPa
TXPT2 40 mi63 min SSE 8.9 G 9.9 66°F 65°F1013.4 hPa
LUIT2 41 mi63 min S 4.1 G 8 67°F 66°F1015.1 hPa
NCHT2 - 8770777 - Manchester, TX 41 mi69 min S 5.1 G 8.9 66°F 68°F1012.7 hPa
PORT2 - 8770475 - Port Arthur, TX 42 mi63 min SE 5.1 G 7 64°F 64°F1013.8 hPa

Wind History for Rollover Pass, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
High Island 179A (Apache Corp), LA22 mi58 minS 1010.00 miA Few Clouds68°F64°F88%1014.2 hPa
Galveston, Scholes Field, TX22 mi41 minS 810.00 miFair68°F66°F93%1014 hPa

Link to 5 minute data for KGLS

Wind History from GLS (wind in knots)
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Last 24hrE6E4E4SE5E6E7E4E3E5E6E7E7SE8SE8SE7SE7SE8SE7SE7SE5SE5SE7S8S8
1 day agoN12N11N14N13N13N13N15N12N11N12N12N14N15N11N12N11N7N8N7N7SE6SE6SE4E6
2 days agoS8S7SE7S5S8S7S6SW6SW4W3SW4W6W11W7W7W8W8NW9NW9N10N14N12N13N12

Tide / Current Tables for Gilchrist, East Bay, Texas
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Gilchrist
Click for Map
Sun -- 03:29 AM CST     Moonset
Sun -- 03:44 AM CST     0.98 feet High Tide
Sun -- 07:00 AM CST     Sunrise
Sun -- 11:55 AM CST     0.14 feet Low Tide
Sun -- 03:12 PM CST     Moonrise
Sun -- 05:19 PM CST     Sunset
Sun -- 06:09 PM CST     0.99 feet High Tide
Sun -- 11:53 PM CST     0.79 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.80.9110.90.80.70.50.40.20.20.10.20.30.50.80.9110.90.90.80.8

Tide / Current Tables for Galveston Bay Entrance, Texas Current
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Galveston Bay Entrance
Click for Map
Sun -- 12:36 AM CST     0.56 knots Max Flood
Sun -- 02:22 AM CST     -0.00 knots Slack
Sun -- 03:29 AM CST     Moonset
Sun -- 07:00 AM CST     Sunrise
Sun -- 07:05 AM CST     -2.01 knots Max Ebb
Sun -- 11:06 AM CST     0.00 knots Slack
Sun -- 01:52 PM CST     1.55 knots Max Flood
Sun -- 03:13 PM CST     Moonrise
Sun -- 05:20 PM CST     Sunset
Sun -- 06:17 PM CST     -0.00 knots Slack
Sun -- 08:37 PM CST     -0.55 knots Max Ebb
Sun -- 11:43 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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0.50.50.2-0.3-0.8-1.4-1.8-2-1.9-1.5-0.9-0.10.81.41.51.410.60.1-0.3-0.5-0.5-0.4-0.2

Weather Map
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wmap_A
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.
Link to Loop

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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weather_mapweather_map weather_map

Gulf Stream Current


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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.