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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 6:53AM | Sunset 7:51PM | Monday August 26, 2019 2:52 AM CDT (07:52 UTC) | Moonrise 1:36AM | Moonset 3:57PM | Illumination 18% |  |
GMZ335 Galveston Bay- 1034 Pm Cdt Sun Aug 25 2019
Rest of tonight..Southwest winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
Monday..Southwest winds around 10 knots becoming south in the afternoon. Bay waters smooth to slightly choppy becoming slightly choppy in the afternoon. A slight chance of showers early in the morning, then a chance of showers in the late morning and early afternoon. A slight chance of showers late in the afternoon.
Monday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Tuesday..South winds around 10 knots. Bay waters smooth to slightly choppy. A slight chance of showers and Thunderstorms in the afternoon.
Tuesday night..South winds 5 to 10 knots. Bay waters smooth.
Wednesday..Southwest winds around 5 knots becoming south in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms.
Wednesday night..South winds 5 to 10 knots becoming southwest after midnight. Bay waters smooth. A slight chance of showers and Thunderstorms.
Thursday..Southwest winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Thursday night..South winds 5 to 10 knots becoming southwest after midnight. Bay waters smooth.
Friday..East winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms.
Friday night..Southeast winds 5 to 10 knots. Bay waters smooth.
Rest of tonight..Southwest winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
Monday..Southwest winds around 10 knots becoming south in the afternoon. Bay waters smooth to slightly choppy becoming slightly choppy in the afternoon. A slight chance of showers early in the morning, then a chance of showers in the late morning and early afternoon. A slight chance of showers late in the afternoon.
Monday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Tuesday..South winds around 10 knots. Bay waters smooth to slightly choppy. A slight chance of showers and Thunderstorms in the afternoon.
Tuesday night..South winds 5 to 10 knots. Bay waters smooth.
Wednesday..Southwest winds around 5 knots becoming south in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms.
Wednesday night..South winds 5 to 10 knots becoming southwest after midnight. Bay waters smooth. A slight chance of showers and Thunderstorms.
Thursday..Southwest winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Thursday night..South winds 5 to 10 knots becoming southwest after midnight. Bay waters smooth.
Friday..East winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A slight chance of showers and Thunderstorms.
Friday night..Southeast winds 5 to 10 knots. Bay waters smooth.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1034 Pm Cdt Sun Aug 25 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore flow will continue this week with a daily pattern of stronger winds during the overnight hours and then diminishing during the day. Rain chances decrease Monday night as high pressure builds into the area.
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore flow will continue this week with a daily pattern of stronger winds during the overnight hours and then diminishing during the day. Rain chances decrease Monday night as high pressure builds into the area.
7 Day Forecast for Marine Location Near Clear Lake Shores, TX
Hourly EDIT Helplocation: 29.55, -95 debug
Area Discussion for - Houston/Galveston, TX
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus64 khgx 260448 afdhgx area forecast discussion national weather service houston galveston tx 1148 pm cdt Sun aug 25 2019 Aviation [06z TAF issuance] Band of MVFR ceilings 1500-2000ft spreading inland and expect periods ofVFR MVFR conditions through sunrise for mainly cxo uts cll. High-res guidance has been doing a good job of capturing the lower ceilings. Showers should develop over the coastal waters around 09z and then move inland 11-15z but should be mainly over the southern terminals. Guidance has been trending much drier than yesterdays runs and have kept with the vcsh wording in the TAF for the 15-20z time frame. Can't rule out isolated thunderstorms for the hou area southward. Skies should again clear out quickly Monday evening. 45 Prev discussion issued 840 pm cdt Sun aug 25 2019 Discussion Per WV imagery, we are seeing a good bit of drier air move into cwa from the NW at this time. This looks to be helping with the decreased activity and clearing skies at present. Did make some |
tweaks to the near-term grids to account for these trends. 41 Preliminary point temps pops College station (cll) 78 100 79 101 77 10 0 0 10 10 houston (iah) 79 98 80 99 79 10 30 0 20 10 galveston (gls) 83 92 84 94 84 30 30 0 10 10 Hgx watches warnings advisories Tx... Heat advisory from 1 pm to 7 pm cdt Monday for the following zones: austin... Brazos... Burleson... Colorado... Fort bend... Grimes... Houston... Inland brazoria... Inland harris... Inland jackson... Inland matagorda... Madison... Montgomery... Polk... San jacinto... Trinity... Walker... Waller... Washington... Wharton. Gm... Small craft should exercise caution until 7 am cdt Monday 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... Matagorda bay... 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. Aviation... 45 |
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 |
| EPTT2 - 8771013 - Eagle Point, TX | 6 mi | 53 min | S 9.9 G 12 | 84°F | 84°F | 1009.3 hPa (+0.0) | ||
| MGPT2 - 8770613 - Morgans Point, TX | 9 mi | 53 min | S 8 G 11 | 83°F | 87°F | 1010 hPa (+0.0) | ||
| GRRT2 | 18 mi | 53 min | SSW 8 G 11 | 83°F | 85°F | 1009.6 hPa (+0.0) | ||
| NCHT2 - 8770777 - Manchester, TX | 19 mi | 53 min | S 4.1 G 6 | 81°F | 85°F | 1009.4 hPa (+0.0) | ||
| GNJT2 - 8771341 - Galveston Bay (North Jetty), TX | 20 mi | 59 min | S 15 G 16 | 86°F | 86°F | 1009.3 hPa | ||
| GTOT2 | 20 mi | 53 min | S 7 G 11 | 84°F | 86°F | 1009.9 hPa (+0.0) | ||
| RLOT2 - 8770971 - Rollover Pass, TX | 26 mi | 53 min | S 6 G 12 | 83°F | 87°F | 1010.4 hPa (+0.0) | ||
| HIST2 | 32 mi | 59 min | S 6 G 8.9 | 82°F | 85°F | 1010 hPa | ||
| LUIT2 | 33 mi | 53 min | S 8.9 G 12 | 85°F | 85°F | 1009.9 hPa (+0.0) | ||
| KXIH | 36 mi | 18 min | S 13 | 84°F | 77°F | |||
| 42035 - GALVESTON 22NM East of Galveston, TX | 38 mi | 33 min | S 14 G 18 | 86°F | 1011.1 hPa | 82°F | ||
| 42043 - GA-252 TABS B | 40 mi | 113 min | S 14 G 16 | 86°F | 1009.9 hPa | |||
| FCGT2 - 8772447 - USCG Freeport, TX | 45 mi | 53 min | S 13 G 16 | 85°F | 85°F | 1010.4 hPa (+0.3) | ||
| FPST2 | 45 mi | 53 min | S 14 G 16 | 85°F | 85°F | 1009.6 hPa (+0.4) |
Wind History for Eagle Point, TX
(wind in knots) EDIT (on/off) Help| 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 | 12 AM | 1 AM | 2 AM | |
| Last 24hr | SW | SW | NW | W | NW | W | W | SW | NE | SE | SW G32 | W | -- | E | S | SE G13 | S | S | S G14 | SW | S | S | S G13 | S |
| 1 day ago | W | S G20 | E G4 | N | N | N G11 | N G11 | NE G12 | NE | E | E | SE | SE | S | S | S | S | S | S | SW G8 | SW | SW | SW | SW |
| 2 days ago | S | S | -- | SW | SW G6 | W | NE | E | SE G14 | SE | S | SE | SE G17 | SE | SE | SE | SE | SE | S G15 | SE | S | S |
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, Pearland Regional Airport, TX | 13 mi | 3 hrs | SSE 3 | 9.00 mi | Fair | 80°F | 75°F | 87% | 1010.4 hPa |
| Houston, Houston Hobby Airport, TX | 16 mi | 3 hrs | SSE 5 | 10.00 mi | Partly Cloudy | 80°F | 75°F | 87% | 1010.3 hPa |
| Galveston, Scholes Field, TX | 21 mi | 3 hrs | S 11 | 10.00 mi | Fair | 84°F | 78°F | 82% | 1010.4 hPa |
| John Dunn Helistop, TX | 24 mi | 5 hrs | Var 6 | 9.00 mi | Partly Cloudy | 81°F | 77°F | 89% | 1009.5 hPa |
Link to 5 minute data for KEFD
Wind History from EFD (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 | Calm | SE | Calm | Calm | S | SW | W | S G24 | SE | N | E | E | SE | S | S | S | |||||||
| 1 day ago | E | E | Calm | NW | NE | NE | NE | N | NE | N | N | NE | SE | Calm | S | S | S | S | S | S | ||||
| 2 days ago | Calm | S | Calm | Calm | Calm | Calm | SW | SW | Calm | S | E | SE | SE | E | E | E | SE | E |
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
Mon -- 01:20 AM CDT -0.01 feet Low Tide
Mon -- 02:36 AM CDT Moonrise
Mon -- 06:54 AM CDT Sunrise
Mon -- 09:56 AM CDT 1.04 feet High Tide
Mon -- 04:56 PM CDT Moonset
Mon -- 07:49 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:20 AM CDT -0.01 feet Low Tide
Mon -- 02:36 AM CDT Moonrise
Mon -- 06:54 AM CDT Sunrise
Mon -- 09:56 AM CDT 1.04 feet High Tide
Mon -- 04:56 PM CDT Moonset
Mon -- 07:49 PM CDT Sunset
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 | -0 | 0 | 0.1 | 0.2 | 0.4 | 0.6 | 0.8 | 0.9 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0.9 | 0.9 | 0.9 | 0.8 | 0.8 | 0.6 | 0.4 | 0.3 |
Tide / Current Tables for Bolivar Roads, Texas Current
EDIT (on/off) Help One Week of DataBolivar Roads
Click for Map
Mon -- 01:52 AM CDT 1.90 knots Max Flood
Mon -- 02:35 AM CDT Moonrise
Mon -- 06:53 AM CDT Sunrise
Mon -- 09:32 AM CDT -0.00 knots Slack
Mon -- 04:55 PM CDT Moonset
Mon -- 06:29 PM CDT -2.09 knots Max Ebb
Mon -- 07:48 PM CDT Sunset
Mon -- 11:18 PM CDT 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:52 AM CDT 1.90 knots Max Flood
Mon -- 02:35 AM CDT Moonrise
Mon -- 06:53 AM CDT Sunrise
Mon -- 09:32 AM CDT -0.00 knots Slack
Mon -- 04:55 PM CDT Moonset
Mon -- 06:29 PM CDT -2.09 knots Max Ebb
Mon -- 07:48 PM CDT Sunset
Mon -- 11:18 PM CDT 0.00 knots Slack
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 |
| 1.3 | 1.8 | 1.9 | 1.7 | 1.4 | 1.1 | 0.8 | 0.6 | 0.4 | 0.1 | -0.1 | -0.4 | -0.5 | -0.7 | -0.9 | -1.2 | -1.5 | -1.9 | -2.1 | -2.1 | -1.9 | -1.5 | -1 | -0.2 |
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 (3,6,7,8)
(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. |