Friday, September25, 2020
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L-36.com

Marine Weather and Tides
Richmond, TX

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:12AMSunset 7:16PM Friday September 25, 2020 6:58 PM CDT (23:58 UTC) Moonrise 2:51PMMoonset 12:20AM Illumination 63% Phase: Waxing Gibbous; Moon at 9 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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GMZ335 Galveston Bay- 352 Pm Cdt Fri Sep 25 2020
Tonight..Southeast winds around 5 knots. Bay waters smooth.
Saturday..Northeast winds around 5 knots becoming southeast in the afternoon. Bay waters smooth.
Saturday night..South winds 5 to 10 knots. Bay waters smooth.
Sunday..South winds 10 to 15 knots. Bay waters slightly choppy.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Monday..Southwest winds around 10 knots becoming northwest 15 to 20 knots in the afternoon. Bay waters smooth to slightly choppy becoming choppy in the afternoon. A chance of showers and Thunderstorms.
Monday night..North winds 15 to 20 knots. Bay waters choppy. A slight chance of showers in the evening.
Tuesday..North winds 15 to 20 knots. Bay waters choppy.
Tuesday night..North winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday..Northwest winds 5 to 10 knots. Bay waters smooth.
Wednesday night..West winds 5 to 10 knots becoming northwest after midnight. Bay waters smooth.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 352 Pm Cdt Fri Sep 25 2020
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore winds should resume this weekend ahead of a strong cold front that is expected to move into the coastal waters on Monday. Strong northerly winds, with gusts possibly close to gale force will be possible Monday night in the wake of the front. Winds and seas should gradually subside into midweek.


7 Day Forecast for Marine Location Near Richmond, TX
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location: 29.58, -95.75     debug


Area Discussion for - Houston/Galveston, TX
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FXUS64 KHGX 252333 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 633 PM CDT Fri Sep 25 2020

AVIATION. VFR conditions expected to start the TAF period but with clear skies, light winds and wet grounds from recent rain, feel there will again be some potential for areas of fog overnight. Not sure how widespread or dense fog will get but the potential is there for some pockets of dense fog. The fog should be shallow and burn off early on Saturday with VFR ceilings possible through the morning morning transitioning to no ceilings by evening. 43

PREV DISCUSSION. /ISSUED 343 PM CDT Fri Sep 25 2020/

SHORT TERM [Tonight through Saturday Afternoon] . Another quiet evening with light winds and clearing skies in the early evening with the loss of heating. A brief penetration of the seabreeze possible late this afternoon into the early evening for areas within about 5 miles of the coast. Tonight patchy fog/areas of fog will likely be developing after 3 am for the inland areas especially in the more rural locations with radiational cooling.

Fog dissipating quickly Saturday morning between 7-8 am with heating and then development of shallow CU and capping aloft as upper speed max approaches from the southwest. Moisture return starts and slow rise in BL depth and temperatures should rise into the mid to upper 80s. An isolated shower may be possible east and northeast of the Trinity bay area but chances look slim as upper trough moves through the area.

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LONG TERM . [Saturday Night through Friday]

It will be a little warmer Saturday night through Sunday night as winds come back around to the southeast and south in response to deepening low pressure in the Texas panhandle-West Texas area. Rain is not expected to come back into the picture until late Sunday night through Monday when a strong cold front sweeps through the area. Best rain chances currently look like during the day on Monday ahead of the front with the higher values across ports of our northeast and east counties. Rainfall totals will not be bad at all (nothing even close to what we saw with Beta) due partly to the fast movement of the front (wettest spots might see 1/4 to 1/2 inch). Behind the front, expect falling temperatures along with possible breezy conditions developing inland and breezy/windy conditions developing near and along the coast Monday afternoon and especially Monday night and Tuesday in response to a tightened pressure gradient. With strong ridging developing out west and a deep trough developing out east, look for cooler nights (lows mainly in the 50s inland and in the 60s at the beaches), not as warm days (highs the 70s/80s) and much lower humidities for the remainder of the week as September comes to an end and October begins). 42

MARINE . Mild conditions expected tonight through Sunday with winds varying from northeasterly around to the south then gradually increasing Saturday night into Sunday. Winds may briefing increase to SCEC conditions Sunday night in the Matagorda Bay area and the waters to the south.

A strong cold front will move through SETX Monday and off the coast between 8am and noon. CAA signals all showing a stronger cold front and forcing indicating the potential for a line of showers or storms to accompany parts of the front that isn't capped. After the FROPA winds should quickly ramp up to SCA conditions with sustained 20+ knot winds and stronger gusts. Winds of 25-30 knots will be with possible Monday evening into early Tuesday morning. Winds should relax Tuesday afternoon/evening as surface high settles over the coast.

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PRELIMINARY POINT TEMPS/POPS. College Station (CLL) 64 85 67 89 68 / 0 0 0 0 10 Houston (IAH) 65 86 69 89 73 / 0 0 0 0 0 Galveston (GLS) 75 84 76 87 79 / 0 10 0 10 0

HGX WATCHES/WARNINGS/ADVISORIES. TX . NONE. GM . NONE.

Discussion . 43 Aviation/Marine . 43


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 28 mi59 min SE 5.1 G 7 81°F 80°F1013 hPa (-0.7)
MGPT2 - 8770613 - Morgans Point, TX 41 mi59 min SE 7 G 8 79°F 79°F1013.7 hPa (-0.7)
EPTT2 - 8771013 - Eagle Point, TX 45 mi59 min SE 8 G 8.9 77°F 80°F1013.3 hPa (-0.7)
LUIT2 48 mi59 min SSE 6 G 8 78°F 80°F1015.1 hPa (-0.7)
GRRT2 49 mi59 min S 5.1 G 7 78°F 79°F1013.3 hPa (-0.8)

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston, Sugar Land Municipal / Hull Field Airport, TX6 mi66 minN 010.00 miA Few Clouds84°F63°F49%1013.5 hPa
Houston Southwest Airport, TX15 mi64 minN 010.00 miFair80°F65°F62%1013.9 hPa
Houston Executive Airport, TX17 mi64 minN 010.00 miFair82°F64°F55%1014.2 hPa
John Dunn Helistop, TX21 mi64 minVar 410.00 miMostly Cloudy84°F60°F45%1013.2 hPa

Link to 5 minute data for KSGR

Wind History from SGR (wind in knots)
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Last 24hrN4N3N4N3NW4NE4--CalmCalmCalmCalmCalmN4CalmNE3CalmCalmCalmCalmCalmNE34W4Calm
1 day agoNW6N9N9NW6N6N7NW7N8N4N9CalmNW3N5NW3NW4N6N5NW6NW6N5N6NW6N6N5
2 days agoE4NE5N9N9NE12N14N9N9N7NW7NW7NW9NW10
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Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Fri -- 01:17 AM CDT     Moonset
Fri -- 07:10 AM CDT     Sunrise
Fri -- 09:35 AM CDT     1.04 feet High Tide
Fri -- 03:47 PM CDT     Moonrise
Fri -- 07:12 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.100.20.40.60.80.9111110.90.90.80.80.80.70.60.40.30.10

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas (2)
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Clear Lake
Click for Map
Fri -- 12:02 AM CDT     0.04 feet Low Tide
Fri -- 01:17 AM CDT     Moonset
Fri -- 07:10 AM CDT     Sunrise
Fri -- 08:54 AM CDT     1.20 feet High Tide
Fri -- 03:47 PM CDT     Moonrise
Fri -- 07:12 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.10.20.40.60.811.11.21.21.21.21.11.11110.90.90.80.70.50.30.2

Weather Map
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wmap_A
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
Ground Weather Radar Station Houston/Galveston, TX
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weather_mapweather_map weather_map

Gulf Stream Current



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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 numerous 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.