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Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
| Sunrise 6:53AM | Sunset 6:16PM | Friday February 22, 2019 8:59 PM CST (02:59 UTC) | Moonrise 9:54PM | Moonset 9:14AM | Illumination 86% |  |
GMZ335 Galveston Bay- 349 Pm Cst Fri Feb 22 2019
.dense fog advisory in effect until 9 am cst Saturday...
Tonight..South winds around 10 knots. Bay waters smooth to slightly choppy. Areas of dense fog. A chance of showers and isolated Thunderstorms.
Saturday..Southwest winds 10 to 15 knots becoming west in the afternoon. Bay waters slightly choppy. Areas of dense fog early in the morning. A chance of showers and Thunderstorms early in the morning, then showers and Thunderstorms late in the morning. A slight chance of showers in the afternoon.
Saturday night..Northwest winds 5 to 10 knots. Bay waters smooth.
Sunday..North winds 5 to 10 knots. Bay waters smooth.
Sunday night..Northeast winds 5 to 10 knots increasing to 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight.
Monday..East winds 10 to 15 knots. Bay waters slightly choppy.
Monday night..East winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Tuesday..East winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers.
Tuesday night..East winds 5 to 10 knots. Bay waters smooth. A chance of showers.
Wednesday..East winds 5 to 10 knots. Bay waters smooth. A slight chance of showers.
Wednesday night..Southeast winds 5 to 10 knots becoming east after midnight. Bay waters smooth. A slight chance of showers.
.dense fog advisory in effect until 9 am cst Saturday...
Tonight..South winds around 10 knots. Bay waters smooth to slightly choppy. Areas of dense fog. A chance of showers and isolated Thunderstorms.
Saturday..Southwest winds 10 to 15 knots becoming west in the afternoon. Bay waters slightly choppy. Areas of dense fog early in the morning. A chance of showers and Thunderstorms early in the morning, then showers and Thunderstorms late in the morning. A slight chance of showers in the afternoon.
Saturday night..Northwest winds 5 to 10 knots. Bay waters smooth.
Sunday..North winds 5 to 10 knots. Bay waters smooth.
Sunday night..Northeast winds 5 to 10 knots increasing to 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight.
Monday..East winds 10 to 15 knots. Bay waters slightly choppy.
Monday night..East winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Tuesday..East winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers.
Tuesday night..East winds 5 to 10 knots. Bay waters smooth. A chance of showers.
Wednesday..East winds 5 to 10 knots. Bay waters smooth. A slight chance of showers.
Wednesday night..Southeast winds 5 to 10 knots becoming east after midnight. Bay waters smooth. A slight chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 349 Pm Cst Fri Feb 22 2019
Synopsis for high island to matagorda ship channel out 60 nm.. SEa fog is expected to persist over the bays and nearshore waters tonight through Saturday morning courtesy of the light to moderate onshore flow. The fog will be dissipating with the passage of the next cold front early Saturday afternoon. Generally moderate offshore winds will be developing in the wake of the front the rest of the weekend. Winds will then be veering to the east and slowly strengthening for the start of next week.
Synopsis for high island to matagorda ship channel out 60 nm.. SEa fog is expected to persist over the bays and nearshore waters tonight through Saturday morning courtesy of the light to moderate onshore flow. The fog will be dissipating with the passage of the next cold front early Saturday afternoon. Generally moderate offshore winds will be developing in the wake of the front the rest of the weekend. Winds will then be veering to the east and slowly strengthening for the start of next week.
7 Day Forecast for Marine Location Near The Woodlands, TX
Hourly EDIT Helplocation: 30.11, -95.52 debug
Area Discussion for - Houston/Galveston, TX
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus64 khgx 230005 afdhgx area forecast discussion national weather service houston galveston tx 605 pm cst Fri feb 22 2019 Aviation Lifr ceilings and fog will persist overnight and into the morning hours Saturday. There could be some brief improvement near any isolated light moderate showers overnight, but that won't be the norm and isn't indicated in the tafs. Cold front and associated band of shra & embedded tsra should push thru SE tx from northwest (cll) to SE (gls) between 13-19z. Ceilings should gradually lift intoVFR territory a few hours after the front passes and rains end. Look for wind gusts 15-25kt out of the wnw behind the front. 47 Prev discussion issued 322 pm cst Fri feb 22 2019 short term [tonight through Sunday night]... latest mesoanalysis shows the warm front has moved inland basically from north of palacios to houston hou to north of beaumont. T TD are in the 70s south of the front as we can confirm here at the office. North of the front temperatures are still in the 60s to 50s in the brazos valley. Temperatures may drop a little bit tonight but largely remain steady. If anything temperatures may increase a bit as the warm front moves more north after midnight tonight. There will continue to be chances of showers and maybe an isolated thunderstorm. Jet streak and vorticity MAX seen on water vapor imagery has move into the area but any convection with it is located north of the area towards the arklatex. There is a thin band of showers from college station down to victoria but this activity should not develop much more than it has. Amdar airplane soundings show capping at 800-700mb and 700mb temperatures are pushing 8c-10c based of this an rap mesoanalysis data. Cap should hold overnight going into tomorrow morning. Upper level trough over the southern rockies should rotate east into the plains by mid day Saturday. Surface low should deepen near the upper low and push a pacific cold front into the area. Largely this means there will not be much of a temperature difference, but the airmass will be significantly drier. WRF model runs agree with a broken line of convection moving along the front from 12z to 18z Saturday. A few storms could be strong but given the capping, it will be a battle for significant deep convection to develop. SPC has most of the area in a marginal risk and this looks on track. Greatest threat will be east and northeast of the area. Storms could still produce gusty winds, lightning and brief heavy rainfall. While soils are rather moist, flooding should not be a concern with storms moving through the area quickly. Front should be of the coast and east of the area by 18z to 21z based on WRF model runs along with the NAM gfs. Airmass should be much drier and should cool off overnight. Low temperatures Sunday should be in the 40s most areas with a nice warm up into the 60s |
for high temperatures Sunday. Overpeck long term [Monday through Friday]... moisture return looks to set up once again Monday night into Tuesday. Forecast will keep an increase in rain chances for the Tuesday time period. Beyond Tuesday all of the models really struggle with finding a common solution. Best chance of rain next week does look to be on Tuesday, but depending upon the model, there could be some low end rain chances for much of the week after Tuesday. Right now think the ensemble blended model approach looks to be best course of action for the forecast. Usually the models have had a least some consistency with only some slight timing problems, but lately that has not been the case. Overpeck marine... Will be keeping the marine dense fog advisory in place for the bays and nearshore waters through 9am Sat morning. Some brief periods of slightly improved visibilities are possible the rest of this after- noon, but should fall once again this evening overnight. This advisory may be extended a couple of hours tomorrow morning... Depending on the timing of the next cold front. Per the models... The front is expected to reach the coast around noon (sat), with scattered showers and isolated thunderstorms along ahead of it. Moderate strong N to NW winds in the wake of the front will help clear the fog out of the marine areas late Sat afternoon early evening. Scec flags could also be posted very briefly over the coastal waters Sat night. How- ever, with the surface high building in quickly over the region, we will likely see winds decreasing once again by Sun morning. Winds will turn easterly late Sunday and slowly strengthen Mon tues as the fetch deepens. As a result, tide levels are forecast to rise to around 2.5 ft above mllw. Will have to watch for possible run-up issues from mid-week on. Otherwise, unsettled weather should return to the coastal waters tues along with onshore winds. 41 Preliminary point temps pops College station (cll) 55 68 42 64 41 50 80 0 0 0 houston (iah) 62 73 47 67 45 40 80 0 0 0 galveston (gls) 66 70 53 65 53 40 70 0 0 0 Hgx watches warnings advisories Tx... Dense fog advisory until 10 am cst Saturday for the following zones: brazoria islands... Chambers... Coastal brazoria... coastal galveston... Coastal harris... Coastal jackson... coastal matagorda... Galveston island and bolivar peninsula... Matagorda islands. Gm... Dense fog advisory until 10 am cst Saturday for the following zones: galveston bay... Matagorda bay. Dense fog advisory until noon cst Saturday 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. |
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 |
| NCHT2 - 8770777 - Manchester, TX | 30 mi | 59 min | S 5.1 G 8.9 | 70°F | 65°F | 1011.1 hPa (+0.8) | ||
| MGPT2 - 8770613 - Morgans Point, TX | 41 mi | 59 min | SE 5.1 G 6 | 64°F | 58°F | 1011.9 hPa (+0.8) | ||
| EPTT2 - 8771013 - Eagle Point, TX | 54 mi | 59 min | SE 5.1 G 5.1 | 65°F | 59°F | 1012.4 hPa (+1.1) | ||
| RLOT2 - 8770971 - Rollover Pass, TX | 67 mi | 59 min | SSE 6 G 8 | 65°F | 61°F | 1012.4 hPa (+1.2) |
Wind History for Morgans Point, TX
(wind in knots) EDIT (on/off) Help| 9 PM | 10 PM | 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 | |
| Last 24hr | N G9 | N | NE G12 | NE | N | N G10 | N | N | N | N | NE G8 | NE | NE | E G8 | E | E | SE G7 | E | SE | SE | SE | SE | SE G5 | SE |
| 1 day ago | N | N | NE | NE G12 | E G11 | NE G14 | NE G14 | NE G11 | NE G11 | N | NE | NE | NE | NE G13 | NE G11 | NE G10 | NE | NE | N | N | N G10 | N G9 | NE | |
| 2 days ago | N G12 | N | N G10 | NW G11 | NW | NW G16 | NW | NW G15 | NW G17 | NW G14 | NW G13 | NW G17 | NW G17 | NW G12 | NW G12 | NW G12 | NW | NW | N | N | N | N G10 | N G12 | N |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Houston, Hooks Memorial Airport, TX | 3 mi | 66 min | NW 3 | 0.25 mi | Fog | 65°F | 64°F | 100% | 1011.9 hPa |
| Houston Intercontinental Airport, TX | 13 mi | 66 min | E 3 | 1.00 mi | Fog/Mist | 65°F | 64°F | 100% | 1011.7 hPa |
| Conroe, Montgomery County Airport, TX | 18 mi | 66 min | N 0 | 0.13 mi | Fog | 64°F | 64°F | 100% | 1012.2 hPa |
Wind History from DWH (wind in knots)
| 9 PM | 10 PM | 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 | |
| Last 24hr | NE | NE | NE | N | N | N | N | N | NE | NE | NE | E | E | E | E | SE | SE | Calm | Calm | NE | N | NE | NW | |
| 1 day ago | N | N | N | NE | NE | NE | NE | NE | N | NE | NE | NE | NE | NE | NE | NE | N | N | NE | NE | NE | NE | NE | NE |
| 2 days ago | N | N | NW | NW | NW | NW G16 | NW | NW | NW | NW | NW | N | NW | NW | NW | NW | N | NE | NE | NE | N | NE |
Tide / Current Tables for Lynchburg Landing, San Jacinto River, Texas
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataLynchburg Landing
Click for Map
Fri -- 05:44 AM CST 0.55 feet Low Tide
Fri -- 06:53 AM CST Sunrise
Fri -- 09:11 AM CST Moonset
Fri -- 11:20 AM CST 1.07 feet High Tide
Fri -- 05:43 PM CST 0.51 feet Low Tide
Fri -- 06:14 PM CST Sunset
Fri -- 09:51 PM CST Moonrise
Fri -- 11:36 PM CST 1.12 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 05:44 AM CST 0.55 feet Low Tide
Fri -- 06:53 AM CST Sunrise
Fri -- 09:11 AM CST Moonset
Fri -- 11:20 AM CST 1.07 feet High Tide
Fri -- 05:43 PM CST 0.51 feet Low Tide
Fri -- 06:14 PM CST Sunset
Fri -- 09:51 PM CST Moonrise
Fri -- 11:36 PM CST 1.12 feet High Tide
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 |
| 1.1 | 1.1 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 | 0.6 | 0.7 | 0.9 | 1 | 1.1 | 1.1 | 1 | 0.9 | 0.7 | 0.6 | 0.5 | 0.5 | 0.6 | 0.7 | 0.9 | 1 | 1.1 |
Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
EDIT (on/off) Help One Week of DataClear Lake
Click for Map
Fri -- 12:32 AM CST 0.41 feet High Tide
Fri -- 06:24 AM CST -0.02 feet Low Tide
Fri -- 06:53 AM CST Sunrise
Fri -- 09:11 AM CST Moonset
Fri -- 12:03 PM CST 0.45 feet High Tide
Fri -- 06:14 PM CST Sunset
Fri -- 06:49 PM CST -0.23 feet Low Tide
Fri -- 09:51 PM CST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 12:32 AM CST 0.41 feet High Tide
Fri -- 06:24 AM CST -0.02 feet Low Tide
Fri -- 06:53 AM CST Sunrise
Fri -- 09:11 AM CST Moonset
Fri -- 12:03 PM CST 0.45 feet High Tide
Fri -- 06:14 PM CST Sunset
Fri -- 06:49 PM CST -0.23 feet Low Tide
Fri -- 09:51 PM CST 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 |
| 0.4 | 0.4 | 0.3 | 0.2 | 0.1 | 0 | -0 | -0 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.4 | 0.3 | 0.2 | -0 | -0.1 | -0.2 | -0.2 | -0.2 | -0.1 | 0.1 | 0.2 |
Weather Map and Satellite Images
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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 (21,6,7,8)
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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. |