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Marine Weather and Tides
Version 3.4 |
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 7:03AM | Sunset 5:25PM | Saturday December 7, 2019 6:39 AM CST (12:39 UTC) | Moonrise 2:45PM | Moonset 2:40AM | Illumination 80% |  |
GMZ335 Galveston Bay- 307 Am Cst Sat Dec 7 2019
Today..Northeast winds 5 to 10 knots. Bay waters smooth.
Tonight..East winds around 5 knots. Bay waters smooth.
Sunday..Southeast winds 5 to 10 knots. Bay waters smooth.
Sunday night..South winds around 10 knots. Bay waters smooth to slightly choppy.
Monday..Southwest winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers late in the afternoon.
Monday night..South winds 5 to 10 knots becoming west 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight. A chance of showers early in the evening, then showers likely in the late evening and overnight.
Tuesday..North winds 15 to 20 knots. Bay waters choppy. Showers likely.
Tuesday night..North winds 15 to 20 knots. Bay waters choppy. A chance of showers.
Wednesday..Northeast winds 15 to 20 knots decreasing to 10 to 15 knots in the afternoon. Bay waters choppy becoming slightly choppy in the afternoon. A slight chance of showers in the late morning and afternoon.
Wednesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
Today..Northeast winds 5 to 10 knots. Bay waters smooth.
Tonight..East winds around 5 knots. Bay waters smooth.
Sunday..Southeast winds 5 to 10 knots. Bay waters smooth.
Sunday night..South winds around 10 knots. Bay waters smooth to slightly choppy.
Monday..Southwest winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers late in the afternoon.
Monday night..South winds 5 to 10 knots becoming west 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight. A chance of showers early in the evening, then showers likely in the late evening and overnight.
Tuesday..North winds 15 to 20 knots. Bay waters choppy. Showers likely.
Tuesday night..North winds 15 to 20 knots. Bay waters choppy. A chance of showers.
Wednesday..Northeast winds 15 to 20 knots decreasing to 10 to 15 knots in the afternoon. Bay waters choppy becoming slightly choppy in the afternoon. A slight chance of showers in the late morning and afternoon.
Wednesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 307 Am Cst Sat Dec 7 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate and occasionally gusty offshore winds will diminish and veer to northeasterly through the day. Winds should continue veering through the night, and light onshore flow will be established by Sunday morning. On Monday, expect the onshore flow to strengthen prior to a cold front arriving on Tuesday. Rain chances increase with the frontal passage. Moderate to strong offshore flow after the frontal passage - a few gusts towards the 60 nm mark could possibly reach above 30 knots on Tuesday night.
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate and occasionally gusty offshore winds will diminish and veer to northeasterly through the day. Winds should continue veering through the night, and light onshore flow will be established by Sunday morning. On Monday, expect the onshore flow to strengthen prior to a cold front arriving on Tuesday. Rain chances increase with the frontal passage. Moderate to strong offshore flow after the frontal passage - a few gusts towards the 60 nm mark could possibly reach above 30 knots on Tuesday night.
7 Day Forecast for Marine Location Near New Territory, TX
Hourly EDIT Helplocation: 29.58, -95.7 debug
Area Discussion for - Houston/Galveston, TX
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS64 KHGX 071113 AFDHGX
Area Forecast Discussion National Weather Service Houston/Galveston TX 513 AM CST Sat Dec 7 2019
AVIATION [12Z TAF Issuance].
The vast majority of the forecast period will be handling light to moderate winds as they veer from northerly to northeasterly/easterly through the day and into the evening. Moisture will begin to return overnight as winds become onshore. While ceilings are not anticipated, some FEW/SCT clouds at high MVFR are possible Guidance also hints at fog developing. this seems aggressive, so have stripped it from most terminals, except allowing for some MVFR fog near dawn at the usual suspects (CXO, SGR, LBX) that fog up before everyone else.
PREV DISCUSSION /Issued 351 AM CST Sat Dec 7 2019/.
Fair weather is expected through the weekend and into early next week, with a warming trend that will continue until a cold arrives Monday night to usher in a colder air mass. This front will also bring a renewed chance of showers which look to linger through Tuesday and into Tuesday night. A more unsettled pattern looks to dominate the latter part of next week.
SHORT TERM [Through Sunday Night].
Northwest flow aloft and winds veering through north to northeasterly on Saturday is about as clear a signal as one can get for cooler, drier weather tomorrow. That said, underneath full sun and diminishing winds, I'm not really expecting a lot in the way of cold advection. So while cooler temps should be expected today, it should only be a modest difference from yesterday. I think the warm spots southwest of Houston should see a pretty good shot at cracking 70 degrees still.
By Sunday, look for surface winds to be back to southeasterly, with 850 winds shifting around to be southwesterly, so a warmup looks to be in the cards. I went ahead and overshot the guidance consensus a bit, with widespread highs in the 70s, and rising into the middle to upper 70s in the west. Clouds as a weak vort max passes by may hold temps back a bit, but I don't expect the influence to be too severe.
LONG TERM [Monday Through Saturday].
The warmup continues into Monday! Onshore flow will boost dewpoints, keeping overnight temps Sunday night into Monday higher. More sun should also help make for a hotter afternoon. I don't explicitly forecast any records (and given this is Day 3, I sure hope I'm not!) but we're getting up into that neighborhood, with forecast highs 2-5 degrees short of record values.
Of course, upstream, things are changing. By Monday, look for a northern stream trough moving across the Northern Plains to drag an upper low over the desert Southwest in tow. While there had earlier been some spread in the guidance in the evolution of this upper air pattern, it looks like there is a growing consensus that the southern stream low will hang on for the ride, providing dynamic support to the tail of a cold front attached to a surface low over the eastern Great Lakes. Did not run completely with the very wet PoPs in the consensus of guidance, but do feel more confident in putting likely rain chances Monday night into Tuesday.
After that, things get . interesting. Depending on how long it takes the southern stream trough to swing through Texas, precip could linger through much of Tuesday and potentially into Tuesday night. At the same time, there should be fairly strong cold advection behind the front. If you're reading between the lines, I imagine you've already guessed what I'm starting to hint at here. It's an extremely unlikely scenario, but if precip lingers significantly longer than expected, and we see a good, deep push of colder air . I'm not even going to jinx it by saying the "s-word" here. Ultimately, there is not a single GEFS member that creates this overlap, and I am pretty doubtful that we'd even see flurries out of this. What I do think we may need to watch out for is a good, ol' fashioned, "5 pellets of sleet" setup where the lower atmosphere is dry enough to allow for significant evaporative cooling to push things just cold enough to freeze the last bit of mid-level precip before things turn off for good. Stay tuned, I guess, and we'll see how this plays out.
From there, we see a pretty muddled picture as a stream of upper troughs roll through. If there's enough moisture in place, we could see some light showers - probably over the Gulf, maybe around the coast. The passing of multiple disturbances looks to keep 850 winds north of west pretty frequently, which will ensure that any warming trend - if there is one at all - will be slow and gradual.
MARINE.
Moderate and occasionally gusty offshore winds will diminish and veer to northeasterly through the day. Winds should continue veering through the night, and light onshore flow will be established by Sunday morning. On Monday, expect the onshore flow to strengthen prior to a cold front arriving with strong rain chances on Tuesday. Moderate to strong offshore flow after the frontal passage, and a small craft advisory looks like a strong possibility. There may be an outside shot for a very low end gale in the offshore waters.
Tides will gradually return to near astronomical norms as winds veer away from offshore, and eventually become higher than from those astronomical predictions as onshore flow returns. In an absolute sense, it seems likely that the next few low tide cycles will be roughly the same, as astronomical tides fall into next week.
CLIMATE.
Galveston tied its record high yesterday, reaching 79 degrees. The record it matched is not terribly old, dating back only to 1998. Cooler conditions should keep us safe from any record values this weekend, but there is a chance we'll get back into the neighborhood of record highs on Monday if pre-frontal warming is strong enough.
PRELIMINARY POINT TEMPS/POPS.
College Station (CLL) 69 48 75 60 81 / 0 0 0 0 0 Houston (IAH) 70 49 74 62 80 / 0 0 0 0 10 Galveston (GLS) 66 58 71 65 75 / 0 0 0 0 10
HGX WATCHES/WARNINGS/ADVISORIES.
TX . None. GM . None.
DISCUSSION . Luchs SHORT TERM . Luchs LONG TERM . Luchs AVIATION . Luchs MARINE . Luchs CLIMATE . Luchs
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 | 25 mi | 58 min | NNW 2.9 G 5.1 | 54°F | 67°F | 1023.6 hPa | ||
| MGPT2 - 8770613 - Morgans Point, TX | 39 mi | 58 min | NNW 8 G 11 | 55°F | 64°F | 1023.9 hPa | ||
| EPTT2 - 8771013 - Eagle Point, TX | 42 mi | 58 min | N 6 G 11 | 58°F | 62°F | 1023.2 hPa | ||
| LUIT2 | 46 mi | 52 min | N 14 G 16 | 58°F | 63°F | 1024.6 hPa | ||
| GRRT2 | 47 mi | 58 min | NNE 11 G 14 | 57°F | 63°F | 1023.1 hPa | ||
| FCGT2 - 8772447 - USCG Freeport, TX | 49 mi | 52 min | NNW 6 G 12 | 55°F | 66°F | |||
| FPST2 | 49 mi | 58 min | NNW 9.9 G 15 | 55°F | 67°F | 1023.3 hPa |
Wind History for Morgans Point, TX
(wind in knots) EDIT (on/off) Help| 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 | 3 AM | 4 AM | 5 AM | |
| Last 24hr | W G9 | SW G10 | W G11 | W G16 | W G16 | NW G14 | NW G15 | NW G16 | NW G17 | NW G15 | NW G17 | NW G15 | N | N | NW G17 | NW G15 | NW G16 | N G17 | N G16 | N | N | N G14 | N | N |
| 1 day ago | E | E | E | E | SE | SE G13 | SE G12 | SE G14 | SE G15 | SE G14 | SE | SE | SE | SE | SE G7 | SE | SE | S | S | S | S | SW | SW G7 | SW |
| 2 days ago | W | NW | N G10 | N | NE | NE | -- | NW | N G9 | E G4 | SE | SE | -- | N | NE | E | E | E | E | E | SE | SE | S | E |
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, Sugar Land Municipal / Hull Field Airport, TX | 4 mi | 47 min | NNW 7 | 10.00 mi | Fair | 50°F | 44°F | 80% | 1024.5 hPa |
| Houston Southwest Airport, TX | 13 mi | 65 min | NNW 3 | 10.00 mi | Fair | 50°F | 45°F | 82% | 1024.4 hPa |
| John Dunn Helistop, TX | 19 mi | 45 min | N 9 | 10.00 mi | Fair | 54°F | 42°F | 67% | 1024 hPa |
| Houston Executive Airport, TX | 19 mi | 45 min | N 5 | 10.00 mi | Mostly Cloudy | 48°F | 44°F | 87% | 1025.4 hPa |
| Houston, Houston Hobby Airport, TX | 23 mi | 47 min | N 7 | 10.00 mi | A Few Clouds | 53°F | 44°F | 72% | 1024.5 hPa |
Link to 5 minute data for KSGR
Wind History from SGR (wind in knots)
| 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 | 3 AM | 4 AM | 5 AM | 6 AM | |
| Last 24hr | W | W | W | NW | NW | NW | NW G19 | NW G20 | NW | NW | N G18 | N | N | N | N | N | N | NW | N | N | N | NW | N | N |
| 1 day ago | Calm | SE | SE | SE | S | S | S | S | S | S | S | SE | SE | SE | SE | S | S | S | S | S | SW | SW | SW | W |
| 2 days ago | Calm | N | NE | NE | NE | NE | N | Calm | NE | NE | N | Calm | NE | NE | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm |
Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
EDIT Weekend mode (on/off) (on/off) Help One Week of DataClear Lake
Click for Map
Sat -- 12:49 AM CST 0.26 feet Low Tide
Sat -- 02:37 AM CST Moonset
Sat -- 06:21 AM CST 0.55 feet High Tide
Sat -- 07:02 AM CST Sunrise
Sat -- 01:51 PM CST 0.03 feet Low Tide
Sat -- 02:42 PM CST Moonrise
Sat -- 05:21 PM CST Sunset
Sat -- 08:13 PM CST 0.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:49 AM CST 0.26 feet Low Tide
Sat -- 02:37 AM CST Moonset
Sat -- 06:21 AM CST 0.55 feet High Tide
Sat -- 07:02 AM CST Sunrise
Sat -- 01:51 PM CST 0.03 feet Low Tide
Sat -- 02:42 PM CST Moonrise
Sat -- 05:21 PM CST Sunset
Sat -- 08:13 PM CST 0.47 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 |
| 0.3 | 0.3 | 0.3 | 0.3 | 0.4 | 0.5 | 0.5 | 0.5 | 0.5 | 0.4 | 0.3 | 0.2 | 0.1 | 0.1 | 0 | 0.1 | 0.2 | 0.3 | 0.4 | 0.4 | 0.5 | 0.5 | 0.4 | 0.4 |
Tide / Current Tables for Clear Lake, Harris Co. Park, Texas (2)
EDIT (on/off) Help One Week of DataClear Lake
Click for Map
Sat -- 12:32 AM CST 0.44 feet Low Tide
Sat -- 02:37 AM CST Moonset
Sat -- 06:20 AM CST 0.73 feet High Tide
Sat -- 07:02 AM CST Sunrise
Sat -- 01:59 PM CST 0.22 feet Low Tide
Sat -- 02:42 PM CST Moonrise
Sat -- 05:21 PM CST Sunset
Sat -- 08:00 PM CST 0.67 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:32 AM CST 0.44 feet Low Tide
Sat -- 02:37 AM CST Moonset
Sat -- 06:20 AM CST 0.73 feet High Tide
Sat -- 07:02 AM CST Sunrise
Sat -- 01:59 PM CST 0.22 feet Low Tide
Sat -- 02:42 PM CST Moonrise
Sat -- 05:21 PM CST Sunset
Sat -- 08:00 PM CST 0.67 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 |
| 0.4 | 0.4 | 0.5 | 0.5 | 0.6 | 0.7 | 0.7 | 0.7 | 0.7 | 0.6 | 0.5 | 0.4 | 0.3 | 0.2 | 0.2 | 0.3 | 0.3 | 0.4 | 0.6 | 0.6 | 0.7 | 0.6 | 0.6 | 0.6 |
Weather Map
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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 (7,2,3,4)
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Ground Weather Radar Station Houston/Galveston, TX
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Gulf Stream Current
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