Wednesday, November20, 2019 L-36.com


Marine Weather and Tides
Seabrook, TX

Version 3.4
NOTICE
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 6:47AMSunset 5:24PM Wednesday November 20, 2019 12:38 AM CST (06:38 UTC) Moonrise 12:15AMMoonset 1:44PM Illumination 44% Phase: Third Quarter Moon; Moon at 23 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
    EDIT      (on/off)   Help
GMZ335 Expires:201911201630;;533735 Fzus54 Khgx 200333 Cwfhgx Coastal Waters Forecast National Weather Service Houston/galveston Tx 933 Pm Cst Tue Nov 19 2019 Upper Texas Coastal Waters From High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves...along With The Occasional Height Of The Average Highest 10 Percent Of The Waves. Gmz330-335-201630- Matagorda Bay-galveston Bay- 933 Pm Cst Tue Nov 19 2019
Rest of tonight..Southeast winds 5 to 10 knots. Bay waters smooth.
Wednesday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers. A slight chance of Thunderstorms in the afternoon.
Wednesday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms in the evening. A slight chance of showers and isolated Thunderstorms late. Patchy fog late.
Thursday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. Patchy fog early in the morning. A slight chance of showers and isolated Thunderstorms.
Thursday night..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and isolated Thunderstorms in the late evening and overnight. Patchy fog late.
Friday..South winds around 10 knots becoming west in the afternoon. Bay waters smooth to slightly choppy becoming smooth in the afternoon. Patchy fog early in the morning. A chance of showers and Thunderstorms in the morning, then showers and isolated Thunderstorms in the afternoon.
Friday night..North winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers in the evening, then a slight chance of showers after midnight.
Saturday..North winds 10 to 15 knots. Bay waters slightly choppy.
Saturday night..North winds 5 to 10 knots. Bay waters smooth.
Sunday..Northeast winds around 5 knots becoming southeast in the afternoon. Bay waters smooth.
Sunday night..South 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 933 Pm Cst Tue Nov 19 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Onshore winds will strengthen Wednesday as the pressure gradient tightens in response to the next storm system developing and moving into the central plains. Caution flags and perhaps an advisory may be needed for the offshore waters on Wednesday. A cold front should move off the coast Friday, increasing rain chances ahead and along the front. Winds increase and seas build in the wake of the frontal passage.


7 Day Forecast for Marine Location Near Seabrook, TX
   Hourly   EDIT   Help
location: 29.61, -94.98     debug


Area Discussion for - Houston/Galveston, TX
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
ftp://tgftp.nws.noaa.gov/data/raw/fx/fxus64.khgx.afd.hgx.txt <- there really should be an address herer AEFXUS64 KHGX 200546 AFDHGX Area Forecast Discussion National Weather Service Houston Galveston TX 1146 PM CST Tue Nov 19 2019

AVIATION [06Z TAF Issuance] As expected there have been some isolated areas where winds have decoupled enough and temps have reached the cross over temps from this afternoon. So there has been some fog development. The fog has been slow to expand but where it has developed, visibility has dropped quite a bit to under 1SM at KCXO and KDWH. KIAH has visibility down to 1.5 miles and the expectation is for visibility to improve as onshore flow increases. None of the guidance has done a good job keeping up with these kinds of trends, so it will be an hour by hour tracking of visibility that we will need to do forward. Fog should erode 12-14Z as winds begin to increase with low stratocumulus developing. Added VCSH for a few terminals as there should be a few showers passing by the office.

Overpeck

PREV DISCUSSION Issued 1011 PM CST Tue Nov 19 2019 NEAR TERM [Through Tonight Wednesday] Surface analysis at 04Z shows lowering pressures in the plains with winds from the southeast over the area. Temperatures have already fallen close to the dewpoint but due to winds and increasing clouds, temps should not dropp too much more. Steady temps will likely keep fog from forming with only a few patches possible. Short term guidance continues to hit the Hill Country and SW Louisiana the hardest with fog. There is a nice gap in fog coverage over our forecast area. The NAM looks to be an outlier in this case. We do have mention of patchy fog for areas west of Houston from Wharton to Columbus. That said, Conroe is down to 1 mile visibility at 04Z but we think visibility will bounce between 1 mile and 6 miles the next few hours.

It does look like streamer showers will be possible tomorrow mainly in the morning into early afternoon hours. Hi-res guidance like the HRRR and WRF continue to favor shower activity in the main moisture axis and LLJ axis. Slight changes were made to adjust for more confidence in shower activity forming.

Overpeck

SHORT TERM [Through Wednesday] Latest surface analysis shows surface high pressure across the coastal waters of LA. Local surface observations are currently reporting winds from the south at 5 to 10 MPH. As of 2 PM CST, temperatures were in the mid to upper 70s inland, in the low 70s along the Barrier Islands. The model blends have been on the cooler side, thus had to manually increase a degree or two from the previous forecast. For tonight, low temperatures in the mid to upper 50s are expected over areas north of I-10 and in the upper 50s to low 60s over areas south of I-10. Low dewpoint spread along with calm to light winds could once again set the stage for areas of patchy fog to develop across some areas of the CWA tonight into early Wednesday morning, possibly affecting the morning commute. Fog is expected to dissipate shortly after sunrise.

Wednesday, southerly wind flow will increase as the pressure gradient strengthens. Low level moisture will move into the region from the west overnight and Wednesday, resulting in an increase in cloud coverage. Models do pick up on shower development along the waters and coastal regions in the morning, spreading further inland as the afternoon progresses. Temperatures will rise into the upper 70s Wednesday afternoon once again, possibly reaching 80. 24

LONG TERM [Wednesday Night Through Tuesday] Moisture levels will continue to rise Wednesday night through Thursday night, and we could see a period or two of mainly shower development with the better chances probably coming on Thursday with daytime heating as a catalyst. Before the next cold front's arrival and passage on Friday, we might get some sea fog develop in and around the Bays as warmer air temperatures override the cooler water temperatures. The warmer temperatures will persist until the cold front and associated showers and thunderstorms move through on Friday. The weekend will be cool and dry as offshore winds in the wake of the front become onshore during the day on Sunday when high pressure begins to move off to the east. This onshore flow strengthens on Monday and Tuesday and brings warmer temperatures back to the area. We currently have the next cold front moving on through in a late Tuesday-Tuesday night time period. 42

MARINE Onshore flow will increase tonight through Wednesday as the pressure gradient tightens. SCEC conditions expected across the Gulf waters Wednesday afternoon through Thursday morning. Seas gradually build to 5-7 feet late Wednesday morning, decreasing Friday. The next cold front is forecast to move across the local waters Friday, increasing shower and thunderstorm activity ahead and along the frontal boundary. Strengthening winds and building seas expected in the wake of the front; SCEC SCA conditions likely to occur Friday night into Saturday. 24

PRELIMINARY POINT TEMPS POPS College Station (CLL) 79 58 78 66 78 20 30 40 30 70 Houston (IAH) 79 59 76 66 77 30 20 30 30 80 Galveston (GLS) 71 64 73 68 73 10 10 20 20 70

HGX WATCHES WARNINGS ADVISORIES TX... None.

GM... None.

NEAR TERM... Overpeck AVIATION... Overpeck
Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGPT2 - 8770613 - Morgans Point, TX 5 mi56 min SSE 4.1 G 5.1 61°F 1016.2 hPa
EPTT2 - 8771013 - Eagle Point, TX 10 mi56 min SE 6 G 6 62°F 1015.6 hPa
NCHT2 - 8770777 - Manchester, TX 17 mi56 min SE 5.1 G 8 63°F 1015.5 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 22 mi62 min SE 8.9 G 8.9 64°F 1015.3 hPa
GRRT2 22 mi56 min SSE 7 G 8 65°F 1015.8 hPa
GTOT2 23 mi56 min ESE 2.9 G 5.1 65°F 1016.1 hPa
RLOT2 - 8770971 - Rollover Pass, TX 26 mi50 min SSE 7 G 8.9 64°F 1016.4 hPa
HIST2 31 mi62 min SE 1.9 G 4.1 61°F 1016.2 hPa
KXIH 38 mi23 min SSE 7 68°F 63°F
LUIT2 38 mi50 min SE 8 G 9.9 66°F 1017.1 hPa
42035 - GALVESTON 22NM East of Galveston, TX 40 mi38 min SE 7.8 G 9.7 1017.2 hPa (-0.6)
FCGT2 - 8772447 - USCG Freeport, TX 49 mi50 min SE 5.1 G 8 67°F
FPST2 49 mi56 min ESE 8.9 G 9.9 67°F 1015.4 hPa

Wind History for Morgans Point, TX
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
Last
24hr
SW3
W5
W6
G9
W4
W2
--
E2
--
--
SE2
S4
SE5
SE4
G7
SE5
G8
SE8
SE8
SE8
SE7
G10
SE4
SE4
SE8
SE8
SE6
SE5
1 day
ago
W6
W7
W5
W3
W6
W2
W4
NW2
NW6
NW4
NW5
N3
NW6
N7
NW7
NW6
NW3
SE4
S3
SW4
S3
S1
S4
S2
2 days
ago
NE3
N1
NE2
SE3
SE3
G6
SE4
S4
S4
G7
S2
S1
SW3
--
S1
--

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX10 mi1.8 hrsN 08.00 miPatches Fog59°F57°F94%1015.9 hPa
Houston, Pearland Regional Airport, TX15 mi45 minN 05.00 miFog/Mist60°F57°F93%1016.4 hPa
Houston, Houston Hobby Airport, TX16 mi45 minSE 68.00 miFair60°F57°F93%1016.3 hPa
John Dunn Helistop, TX23 mi43 minN 06.00 miFog/Mist63°F60°F94%1015.9 hPa
Galveston, Scholes Field, TX24 mi46 minSE 810.00 miFair67°F63°F87%1016.4 hPa

Link to 5 minute data for KEFD

Wind History from EFD (wind in knots)
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
12
AM
Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm--CalmSE5SE5SE5S5S7SE5--SE3CalmCalmCalmCalm
1 day ago--Calm------CalmCalmCalmNW4NW4N4CalmW8NW8NW4NW5W3CalmSE4S3CalmCalmCalmS3
2 days ago----------CalmCalmCalmCalmCalmCalmCalmSW3NW5W5W5SE4SE3--S3S4S3S3Calm

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas (2)
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Clear Lake
Click for Map
Wed -- 12:15 AM CST     Moonrise
Wed -- 05:45 AM CST     1.02 feet High Tide
Wed -- 06:48 AM CST     Sunrise
Wed -- 01:43 PM CST     Moonset
Wed -- 05:22 PM CST     Sunset
Wed -- 10:51 PM CST     0.16 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
0.20.40.60.80.91110.90.90.80.80.80.70.70.70.70.70.60.50.40.20.20.2

Tide / Current Tables for Bolivar Roads, Texas Current
   EDIT      (on/off)   Help   One Week of Data
Bolivar Roads
Click for Map
Wed -- 12:14 AM CST     Moonrise
Wed -- 04:52 AM CST     -0.00 knots Slack
Wed -- 06:46 AM CST     Sunrise
Wed -- 08:07 AM CST     -0.71 knots Max Ebb
Wed -- 10:32 AM CST     -0.56 knots Min Ebb
Wed -- 01:42 PM CST     Moonset
Wed -- 04:33 PM CST     -1.48 knots Max Ebb
Wed -- 05:22 PM CST     Sunset
Wed -- 08:33 PM CST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
1.81.51.10.70.3-0-0.4-0.6-0.7-0.7-0.6-0.6-0.7-0.8-1.1-1.3-1.5-1.5-1.3-0.9-0.40.311.5

Weather Map
       (on/off)   Help Weather Map
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
Wind Forecast for Houston/Galveston, TX (1,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Houston/Galveston, TX
   (on/off)   Help
weather_mapweather_map weather_map

Gulf Stream Current


Ad by Google

Cookie Policy:
This webiste uses cookies to store settings on the weather pages so that you return to the same settings when you click the weather pages. This is necessary to save your setup information. There are also cookies used if you click the save location button.
Privacy Policy:
I do not sell or share any user data period. I do log page view information to monitor the health of the site and to block abusive actors. I also host ads from Google. They may or may not sell your data. Please adjust your account settings with them if you wich. This site does not fall under the terms of the CCPA or GDPR due to its size and target audiance.
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.