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Marine Weather and Tides
Version 3.4 |
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 6:48AM | Sunset 7:57PM | Monday August 19, 2019 10:15 PM CDT (03:15 UTC) | Moonrise 9:33PM | Moonset 9:15AM | Illumination 80% |  |
GMZ375 Expires:201908200915;;482183 Fzus54 Khgx 192027 Cwfhgx Coastal Waters Forecast National Weather Service Houston/galveston Tx 327 Pm Cdt Mon Aug 19 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. Gmz355-375-200915- Coastal Waters From High Island To Freeport Tx Out 20 Nm- Waters From High Island To Freeport Tx From 20 To 60 Nm- 327 Pm Cdt Mon Aug 19 2019
Tonight..South winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers and Thunderstorms.
Tuesday..Northwest winds 10 to 15 knots becoming southeast 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Showers likely and a chance of Thunderstorms.
Tuesday night..South winds 5 to 10 knots. Seas 2 to 3 feet. A slight chance of showers after midnight.
Wednesday..Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers in the morning. A slight chance of showers and Thunderstorms.
Wednesday night..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers after midnight.
Thursday..Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Thursday night..South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Friday..South winds around 10 knots. Seas 2 to 3 feet. A chance of Thunderstorms in the morning. A chance of showers and Thunderstorms.
Friday night..South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers. A slight chance of Thunderstorms after midnight.
Saturday..South winds around 10 knots. Seas 2 to 3 feet. A chance of Thunderstorms in the morning. A chance of showers. A slight chance of Thunderstorms in the afternoon.
Saturday night..South winds around 10 knots. Seas 2 to 3 feet. A chance of showers.
Tonight..South winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers and Thunderstorms.
Tuesday..Northwest winds 10 to 15 knots becoming southeast 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Showers likely and a chance of Thunderstorms.
Tuesday night..South winds 5 to 10 knots. Seas 2 to 3 feet. A slight chance of showers after midnight.
Wednesday..Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers in the morning. A slight chance of showers and Thunderstorms.
Wednesday night..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers after midnight.
Thursday..Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Thursday night..South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Friday..South winds around 10 knots. Seas 2 to 3 feet. A chance of Thunderstorms in the morning. A chance of showers and Thunderstorms.
Friday night..South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers. A slight chance of Thunderstorms after midnight.
Saturday..South winds around 10 knots. Seas 2 to 3 feet. A chance of Thunderstorms in the morning. A chance of showers. A slight chance of Thunderstorms in the afternoon.
Saturday night..South winds around 10 knots. Seas 2 to 3 feet. A chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 327 Pm Cdt Mon Aug 19 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate onshore flow subsides later tonight as high pressure builds into the region, resulting in lighter winds and lower seas over the next several days. With this typical summertime onshore flow pattern, the development of diurnally driven showers and Thunderstorms along with some brief gusty winds is possible in the morning hours although no major impacts are anticipated.
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate onshore flow subsides later tonight as high pressure builds into the region, resulting in lighter winds and lower seas over the next several days. With this typical summertime onshore flow pattern, the development of diurnally driven showers and Thunderstorms along with some brief gusty winds is possible in the morning hours although no major impacts are anticipated.
7 Day Forecast for Marine Location Near Galveston, TX
Hourly EDIT Helplocation: 28.84, -94.35 debug
Area Discussion for - Houston/Galveston, TX
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus64 khgx 200227 afdhgx area forecast discussion national weather service houston galveston tx 927 pm cdt Mon aug 19 2019 Discussion Seeing the typical lull in precip activity this evening, but am expecting some isolated precip to start developing again in the next 2-5 hours offshore. Hires guidance is showing increasing coverage of shra tstms near the galveston bay area and offshore as we head into sunrise and the morning hours compliments of pooling 2.2-2.4" pw's and some llvl speed & directional convergence. Precip should expand inland W heating and there will probably be some residual boundaries from today's cells and possibly some moving in from louisiana laying around to initially focus upon. Incorporated some of this thinking into the evening update, but overall little noticeable changes were made. 47 Prev discussion issued 640 pm cdt Mon aug 19 2019 aviation... |
scattered showers and thunderstorms will end within the next hou or so with skies clearing andVFR conditions expected for most of the night. Pw values recharge by morning and reach 2.00 inches by 12z and peak around 18z between 2.10 and 2.20 inches. Convective temperatures are between 90-92 degrees so another active day is expected with shra tsra redeveloping near the coast by morning and spreading inland with heating. Added a prob30 for kiah for the afternoon. Leaned toward a blend of the arw GFS and tt WRF for precip chances on Tuesday. 43 Preliminary point temps pops College station (cll) 78 99 76 98 76 20 20 0 10 0 houston (iah) 77 95 78 95 78 20 50 0 20 10 galveston (gls) 83 92 83 92 83 40 60 10 30 20 Hgx watches warnings advisories Tx... High rip current risk through Tuesday morning for the following zones: brazoria islands... Galveston island and bolivar peninsula... Matagorda islands. Gm... None. |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| KXIH | 25 mi | 21 min | SSE 8 | 86°F | 77°F | |||
| 42035 - GALVESTON 22NM East of Galveston, TX | 27 mi | 26 min | SSE 7.8 G 12 | 88°F | 3 ft | 1016.8 hPa | 81°F | |
| GTOT2 | 40 mi | 46 min | S 5.1 G 9.9 | 1015.2 hPa | ||||
| GNJT2 - 8771341 - Galveston Bay (North Jetty), TX | 41 mi | 52 min | S 11 G 13 | 87°F | 89°F | 1014.2 hPa | ||
| GRRT2 | 43 mi | 52 min | SSW 7 G 8.9 | 86°F | 90°F | 1014.7 hPa | ||
| LUIT2 | 44 mi | 46 min | SSE 5.1 G 8.9 | 86°F | 87°F | 1015.3 hPa | ||
| RLOT2 - 8770971 - Rollover Pass, TX | 47 mi | 46 min | S 5.1 G 7 | 86°F | 91°F | 1015.9 hPa |
Wind History for Galveston Pleasure Pier, TX
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| High Island 179A (Apache Corp), LA | 25 mi | 81 min | S 8 | 9.00 mi | Fair | 86°F | 75°F | 70% | 1015.2 hPa |
Link to 5 minute data for KXIH
Wind History from XIH (wind in knots)
| 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
| Last 24hr | S G15 | S | S G19 | S G15 | S | SW | SW | SW | S | S | S | SW | S | SW | SW | SW | SW | SW | SW | S | SW | S | S | S |
| 1 day ago | S G18 | S | S G18 | S G18 | S G20 | S G18 | S G19 | S G19 | S G19 | S G20 | S | S G19 | S | S G20 | SW | S | S | S | S | S | S G16 | S G14 | S | S |
| 2 days ago | S | S G15 | S | S | S | S G17 | S G17 | S | SW G23 | SW | SW | SW | S | S | SW | SW | SW | SW | SW G16 | S | S | S G16 | S G16 | S G18 |
Tide / Current Tables for Galveston (Pleasure Pier), Texas (2)
EDIT Weekend mode (on/off) (on/off) Help One Week of DataGalveston (Pleasure Pier)
Click for Map
Mon -- 06:44 AM CDT 1.92 feet High Tide
Mon -- 06:49 AM CDT Sunrise
Mon -- 10:16 AM CDT Moonset
Mon -- 12:18 PM CDT 1.18 feet Low Tide
Mon -- 06:18 PM CDT 1.71 feet High Tide
Mon -- 07:55 PM CDT Sunset
Mon -- 10:34 PM CDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 06:44 AM CDT 1.92 feet High Tide
Mon -- 06:49 AM CDT Sunrise
Mon -- 10:16 AM CDT Moonset
Mon -- 12:18 PM CDT 1.18 feet Low Tide
Mon -- 06:18 PM CDT 1.71 feet High Tide
Mon -- 07:55 PM CDT Sunset
Mon -- 10:34 PM CDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 0.7 | 0.8 | 1 | 1.2 | 1.5 | 1.7 | 1.9 | 1.9 | 1.8 | 1.6 | 1.4 | 1.3 | 1.2 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 1.7 | 1.7 | 1.6 | 1.4 | 1.2 | 1 |
Tide / Current Tables for Galveston Bay entrance, south jetty, Texas
EDIT (on/off) Help One Week of DataGalveston Bay entrance
Click for Map
Mon -- 06:49 AM CDT Sunrise
Mon -- 07:12 AM CDT 1.83 feet High Tide
Mon -- 10:16 AM CDT Moonset
Mon -- 12:19 PM CDT 1.13 feet Low Tide
Mon -- 06:45 PM CDT 1.63 feet High Tide
Mon -- 07:55 PM CDT Sunset
Mon -- 10:33 PM CDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 06:49 AM CDT Sunrise
Mon -- 07:12 AM CDT 1.83 feet High Tide
Mon -- 10:16 AM CDT Moonset
Mon -- 12:19 PM CDT 1.13 feet Low Tide
Mon -- 06:45 PM CDT 1.63 feet High Tide
Mon -- 07:55 PM CDT Sunset
Mon -- 10:33 PM CDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 0.6 | 0.7 | 0.9 | 1.1 | 1.4 | 1.6 | 1.8 | 1.8 | 1.8 | 1.6 | 1.4 | 1.2 | 1.1 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 1.6 | 1.5 | 1.4 | 1.1 | 1 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES 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 (23,6,7,8)
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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. |