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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 6:50AM | Sunset 7:56PM | Wednesday August 21, 2019 12:00 AM CDT (05:00 UTC) | Moonrise 10:39PM | Moonset 11:04AM | Illumination 70% |  |
GMZ335 Galveston Bay- 1044 Pm Cdt Tue Aug 20 2019
Rest of tonight..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms late.
Wednesday..South winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms early in the morning, then a chance of showers and Thunderstorms in the late morning and early afternoon. A slight chance of showers and Thunderstorms late in the afternoon.
Wednesday night..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms after midnight.
Thursday..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of Thunderstorms early in the morning. A chance of showers. A chance of Thunderstorms in the late morning and afternoon.
Thursday night..South winds 5 to 10 knots. Bay waters smooth. A slight chance of Thunderstorms in the evening. A chance of showers. A chance of Thunderstorms after midnight.
Friday..Southeast winds 5 to 10 knots. Bay waters smooth. Showers likely and a chance of Thunderstorms.
Friday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Saturday..South winds 5 to 10 knots. Bay waters smooth. Showers likely and a chance of Thunderstorms.
Saturday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers.
Sunday..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and a slight chance of Thunderstorms.
Sunday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers.
Rest of tonight..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms late.
Wednesday..South winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms early in the morning, then a chance of showers and Thunderstorms in the late morning and early afternoon. A slight chance of showers and Thunderstorms late in the afternoon.
Wednesday night..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms after midnight.
Thursday..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of Thunderstorms early in the morning. A chance of showers. A chance of Thunderstorms in the late morning and afternoon.
Thursday night..South winds 5 to 10 knots. Bay waters smooth. A slight chance of Thunderstorms in the evening. A chance of showers. A chance of Thunderstorms after midnight.
Friday..Southeast winds 5 to 10 knots. Bay waters smooth. Showers likely and a chance of Thunderstorms.
Friday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Saturday..South winds 5 to 10 knots. Bay waters smooth. Showers likely and a chance of Thunderstorms.
Saturday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers.
Sunday..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and a slight chance of Thunderstorms.
Sunday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1044 Pm Cdt Tue Aug 20 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore flow will persist tonight through the remainder of the week as high pressure continues to build into the the central gulf of mexico. Periods of scattered showers and Thunderstorms are expected over the coastal waters the next several days and may result in some brief gusty winds. Winds are forecast to increase towards the end of the week and into the weekend with an increase in shower and Thunderstorm activity.
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore flow will persist tonight through the remainder of the week as high pressure continues to build into the the central gulf of mexico. Periods of scattered showers and Thunderstorms are expected over the coastal waters the next several days and may result in some brief gusty winds. Winds are forecast to increase towards the end of the week and into the weekend with an increase in shower and Thunderstorm activity.
7 Day Forecast for Marine Location Near El Lago, TX
Hourly EDIT Helplocation: 29.56, -95.05 debug
Area Discussion for - Houston/Galveston, TX
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus64 khgx 210458 afdhgx area forecast discussion national weather service houston galveston tx 1158 pm cdt Tue aug 20 2019 Aviation [06z TAF issuance] Not a lot of changes from previous forecast with similar trends expected for weds afternoon. Shra tsra development should begin along near the coast late Wed morning... Spreading inland by the afternoon. Have kept iah as the northernmost site for vcts, but would not be too surprised if site north of there see some act- ion (mainly uts cxo) before all said and done. Activity will be diminishing by Wed evening with the loss of daytime heating. 41 |
Prev discussion issued 1002 pm cdt Tue aug 20 2019 fcst is on track... Just the usual grid clean-up to match observations & trends for the evening update. 47 Preliminary point temps pops College station (cll) 76 98 76 97 76 10 10 10 20 10 houston (iah) 78 96 78 94 78 10 30 20 30 20 galveston (gls) 82 91 81 90 81 20 30 30 50 60 Hgx watches warnings advisories Tx... None. 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 |
| MGPT2 - 8770613 - Morgans Point, TX | 9 mi | 48 min | S 6 G 8 | 84°F | 88°F | 1016.6 hPa | ||
| EPTT2 - 8771013 - Eagle Point, TX | 9 mi | 48 min | SSE 8.9 G 11 | 1015.9 hPa | ||||
| NCHT2 - 8770777 - Manchester, TX | 16 mi | 48 min | S 5.1 G 7 | 83°F | 88°F | 1016.1 hPa | ||
| GRRT2 | 20 mi | 48 min | S 5.1 G 6 | 84°F | 87°F | 1016 hPa | ||
| GNJT2 - 8771341 - Galveston Bay (North Jetty), TX | 22 mi | 48 min | SSE 8.9 G 11 | 1015.7 hPa | ||||
| GTOT2 | 22 mi | 48 min | S 2.9 G 7 | 85°F | 88°F | 1016.3 hPa | ||
| RLOT2 - 8770971 - Rollover Pass, TX | 29 mi | 42 min | S 5.1 G 7 | 83°F | 89°F | 1017 hPa | ||
| LUIT2 | 34 mi | 42 min | SSE 6 G 8.9 | 85°F | 85°F | 1016.2 hPa | ||
| HIST2 | 35 mi | 48 min | SSE 2.9 G 4.1 | 1016.7 hPa | ||||
| KXIH | 38 mi | 25 min | S 7 | 86°F | 75°F | |||
| 42035 - GALVESTON 22NM East of Galveston, TX | 41 mi | 30 min | S 7.8 G 9.7 | 86°F | 1017.6 hPa | 80°F | ||
| FCGT2 - 8772447 - USCG Freeport, TX | 45 mi | 48 min | S 11 G 12 | 86°F | 85°F | 1016.6 hPa | ||
| FPST2 | 45 mi | 48 min | SSE 13 G 14 | 86°F | 85°F | 1015.8 hPa |
Wind History for Morgans Point, TX
(wind in knots) EDIT (on/off) Help| 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 | |
| Last 24hr | SW | SW G7 | SW G6 | SE G4 | SW | SW | E | -- | NW | NW | SE | NW | N | SW G19 | SW G11 | S | S G8 | S G11 | S G9 | S G7 | S | S | S | S G9 |
| 1 day ago | S G14 | S G10 | S G13 | S G8 | S G9 | S | S | SW G6 | S G5 | S | SW | S | S G11 | SE G12 | SE G12 | SE G15 | S G14 | NE | S G14 | S G14 | S G13 | S G11 | S G11 | S G10 |
| 2 days ago | S G10 | S G8 | S | S G10 | S G11 | SW G13 | SE G14 | NW | S G17 | W G12 | -- | S G14 | S G17 | S G17 | S G14 | S G14 | S G14 | S G13 | S G13 |
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 |
| Houston / Ellington, TX | 8 mi | 2.2 hrs | SSE 3 | 10.00 mi | Mostly Cloudy | 81°F | 73°F | 79% | 1015.2 hPa |
| Houston, Pearland Regional Airport, TX | 11 mi | 4.1 hrs | S 4 | 10.00 mi | Fair | 85°F | 75°F | 72% | 1015.7 hPa |
| Houston, Houston Hobby Airport, TX | 14 mi | 3.1 hrs | S 6 | 10.00 mi | Mostly Cloudy | 83°F | 75°F | 77% | 1015.4 hPa |
| Galveston, Scholes Field, TX | 22 mi | 4.1 hrs | SSE 8 | 10.00 mi | Fair | 85°F | 77°F | 77% | 1015.8 hPa |
| Houston Southwest Airport, TX | 23 mi | 2.4 hrs | S 4 | 10.00 mi | Fair | 80°F | 76°F | 90% | 1015.9 hPa |
Link to 5 minute data for KEFD
Wind History from EFD (wind in knots)
| 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 | |
| Last 24hr | Calm | S | S | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E | NE | S | SW | S | SE | S | S | S | SE | |||
| 1 day ago | Calm | Calm | Calm | Calm | S | S | S | S | S | SE | SE | SE | W | S | S | S | S | SE | ||||||
| 2 days ago | S | S | S | S | S | S | SE | SE | Calm | S | S | S | S | S | S | S | S | S | S | S | S | S | SE |
Tide / Current Tables for Clear Lake, Harris Co. Park, Texas (2)
EDIT Weekend mode (on/off) (on/off) Help One Week of DataClear Lake
Click for Map
Wed -- 02:51 AM CDT 0.71 feet High Tide
Wed -- 06:51 AM CDT Sunrise
Wed -- 08:15 AM CDT 0.52 feet Low Tide
Wed -- 12:04 PM CDT Moonset
Wed -- 02:15 PM CDT 0.80 feet High Tide
Wed -- 07:54 PM CDT Sunset
Wed -- 09:31 PM CDT 0.36 feet Low Tide
Wed -- 11:39 PM CDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 02:51 AM CDT 0.71 feet High Tide
Wed -- 06:51 AM CDT Sunrise
Wed -- 08:15 AM CDT 0.52 feet Low Tide
Wed -- 12:04 PM CDT Moonset
Wed -- 02:15 PM CDT 0.80 feet High Tide
Wed -- 07:54 PM CDT Sunset
Wed -- 09:31 PM CDT 0.36 feet Low Tide
Wed -- 11:39 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 | 0.6 | 0.7 | 0.7 | 0.7 | 0.6 | 0.6 | 0.5 | 0.5 | 0.5 | 0.6 | 0.7 | 0.7 | 0.8 | 0.8 | 0.8 | 0.7 | 0.7 | 0.6 | 0.5 | 0.4 | 0.4 | 0.4 | 0.4 |
Tide / Current Tables for Bolivar Roads, Texas Current
EDIT (on/off) Help One Week of DataBolivar Roads
Click for Map
Wed -- 01:42 AM CDT -0.00 knots Slack
Wed -- 03:55 AM CDT -0.21 knots Max Ebb
Wed -- 06:08 AM CDT 0.00 knots Slack
Wed -- 06:50 AM CDT Sunrise
Wed -- 08:25 AM CDT 0.26 knots Max Flood
Wed -- 10:12 AM CDT -0.00 knots Slack
Wed -- 12:02 PM CDT Moonset
Wed -- 03:41 PM CDT -1.27 knots Max Ebb
Wed -- 07:26 PM CDT 0.00 knots Slack
Wed -- 07:53 PM CDT Sunset
Wed -- 10:25 PM CDT 0.95 knots Max Flood
Wed -- 11:38 PM CDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 01:42 AM CDT -0.00 knots Slack
Wed -- 03:55 AM CDT -0.21 knots Max Ebb
Wed -- 06:08 AM CDT 0.00 knots Slack
Wed -- 06:50 AM CDT Sunrise
Wed -- 08:25 AM CDT 0.26 knots Max Flood
Wed -- 10:12 AM CDT -0.00 knots Slack
Wed -- 12:02 PM CDT Moonset
Wed -- 03:41 PM CDT -1.27 knots Max Ebb
Wed -- 07:26 PM CDT 0.00 knots Slack
Wed -- 07:53 PM CDT Sunset
Wed -- 10:25 PM CDT 0.95 knots Max Flood
Wed -- 11:38 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 |
| 0.3 | 0.1 | -0 | -0.2 | -0.2 | -0.1 | -0 | 0.1 | 0.2 | 0.2 | 0 | -0.2 | -0.5 | -0.8 | -1.1 | -1.2 | -1.3 | -1.1 | -0.7 | -0.2 | 0.3 | 0.7 | 0.9 | 0.9 |
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 (1,6,7,8)
(on/off) Help
Ground Weather Radar Station Houston/Galveston, TX
(on/off) Help
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. |