Monday, September25, 2017 L-36.com


Marine Weather and Tides
Surfside Beach, TX

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:11AMSunset 7:14PM Monday September 25, 2017 10:57 PM CDT (03:57 UTC) Moonrise 11:02AMMoonset 10:04PM Illumination 30% Phase: Waxing Crescent; Moon at 5 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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GMZ355 Coastal Waters From Freeport To The Matagorda Ship Channel Out 20 Nm-coastal Waters From High Island To Freeport Out 20 Nm- 1023 Pm Cdt Mon Sep 25 2017
Rest of tonight..Southeast winds 10 to 15 knots. Seas 2 feet. A slight chance of showers and Thunderstorms after midnight.
Tuesday..East winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Seas 2 feet. A slight chance of showers and Thunderstorms.
Tuesday night..Southeast winds 10 to 15 knots. Seas 1 to 2 feet. A slight chance of showers and Thunderstorms.
Wednesday..East winds 10 to 15 knots. Seas 1 to 2 feet. A slight chance of showers and Thunderstorms.
Wednesday night..East winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Seas 1 to 2 feet. A slight chance of showers and Thunderstorms late.
Thursday..Northeast winds 5 to 10 knots. Seas 2 to 3 feet.
Thursday night..East winds 5 to 10 knots becoming northeast 10 to 15 knots after midnight. Seas 2 to 3 feet. A slight chance of showers and Thunderstorms.
Friday..Northeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and Thunderstorms.
Friday night..Northeast winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Seas 2 to 4 feet.
Saturday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet.
Saturday night..Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 1023 Pm Cdt Mon Sep 25 2017
Synopsis for high island to matagorda ship channel out 60 nm.. A generally light onshore flow over low seas through mid week. Early day isolated showers or Thunderstorms can be expected through the week. A cold front will move offshore at the end of the week, slightly strengthening weekend northeasterlies.

7 Day Forecast for Marine Location Near Surfside Beach, TX
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location: 29.04, -95.18     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 260318
afdhgx
area forecast discussion
national weather service houston galveston tx
1018 pm cdt Mon sep 25 2017

Update
The previous forecast is still on track and no major adjustments
were made.

11

Prev discussion issued 721 pm cdt Mon sep 25 2017
aviation...

showers moving through the cll area with the waning trend across
the board in setx. Skies clearing out of CU but ci will continue
to blow overhead from the pacific moisture tap associated with
epac remnants of TS pilar. Overnight some patchy fog should
redevelop and may see some rural sites with ifr to lifr visby.

Iah hou should remainVFR but can't rule out an hour or two of
mifg. Showers redeveloping again along the seabreeze around 18z
and spreading to the west and northwest. Greater coverage will
probably be in the SW areas closer to the higher pw plume moving
into S tx and coastal bend.

45
prev discussion... Issued 312 pm cdt Mon sep 25 2017
discussion...

precip coverage remains sparse this afternoon but a little more
heating should continue to trigger some additional showers through
7 pm. Showers are expected to wane quickly after sunset. Tuesday
through Thursday look about the same each day fcst soundings
supporting high temperatures near 90 degrees and convective temps
in the middle to upper 80s. The pattern favors weak disturbances
embedded in a SW flow aloft to remain west of SE tx through the
end of the week. As the trough deepens out west, weak upper level
ridging will try to develop over east texas. This feature will
likely impart some subsidence over SE tx so rain chances will
likely remain on the low side through the end of the week.

Moisture levels will exceed 2 inches on Thursday so despite the
subsidence, rain chances may be a bit higher along the wind shift
Thursday.

The front will not usher in cooler and drier air right away. Winds
will become nne on Thursday but the drier air will only slowly
filter into SE tx on Friday and Saturday. The upper ridge dampens
out a bit as weak 500 mb S WV moves across the southern plains on
Saturday and heights will fall a little bit. Cooler 850 mb temps
over the weekend will translate into cooler sfc temps and the
drier air with sfc dew pts in the 50's will allow for cooler
overnight low temps over the weekend. Next weekend is looking good
with dry conds and high temps in the mid 80's and low temps in the
60's. Both the GFS and ECMWF develop a strong 500 mb ridge over
ok ar by the first week of oct. Drier and warmer weather expected
for the first few days of october. 43
marine...

a few more days of light east to southeasterly winds over lower seas.

Upper level ridging should maintain early day isolated showers or
storms that will be moving onshore within a more moist maritime air
mass. The approach of a late week cold front will have breezes
backing more easterly Thursday... A slight strengthening of regional
northeasterlies over the weekend as southern plains high pressure
tightens the post-frontal offshore pressure gradient. These winds
will likely increase 2 to 3 foot sea heights by another foot going
into early next week. There may be some very minor coastal water run-
up issues along eastern facing shores Friday and Saturday. This
in response to this northeasterly fetch on top of slightly above
normal tides. 31

Preliminary point temps pops
College station (cll) 73 90 74 90 73 20 20 10 20 20
houston (iah) 74 90 75 90 75 20 20 10 20 20
galveston (gls) 81 88 80 88 81 30 20 10 20 20

Hgx watches warnings advisories
Tx... None.

Gm... None.

Discussion... 11


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LUIT2 4 mi39 min ESE 13 G 16 82°F
FCGT2 - 8772447 - USCG Freeport, TX 9 mi39 min E 9.9 G 13 82°F 83°F1010.7 hPa
GRRT2 24 mi39 min NNE 7 G 9.9 82°F 84°F1010.8 hPa
GTOT2 28 mi39 min 82°F 84°F
SGNT2 30 mi39 min ESE 12 G 15 83°F 85°F1009.5 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 33 mi45 min ESE 12 G 14 84°F1010.4 hPa
EPTT2 - 8771013 - Eagle Point, TX 34 mi45 min SE 11 G 12 82°F 85°F1010.8 hPa
KXIH 36 mi22 min 82°F 73°F
42035 - GALVESTON 22NM East of Galveston, TX 43 mi57 min ESE 12 G 16 82°F 84°F2 ft1010.4 hPa (+0.7)75°F
EMAT2 45 mi45 min E 13 G 17 82°F 85°F1009.3 hPa
MGPT2 - 8770613 - Morgans Point, TX 46 mi39 min ESE 7 G 9.9 81°F 83°F1010.7 hPa
RLOT2 - 8770971 - Rollover Pass, TX 48 mi39 min SE 9.9 G 11 82°F 83°F1011 hPa
NCHT2 - 8770777 - Manchester, TX 48 mi39 min SSE 5.1 G 11 81°F 81°F1010 hPa

Wind History for USCG Freeport, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Angleton / Lake Jackson, Brazoria County Airport, TX16 mi64 minESE 310.00 miFair79°F73°F82%1010.4 hPa
Galveston, Scholes Field, TX23 mi65 minESE 910.00 miFair83°F73°F72%1010.7 hPa

Wind History from LBX (wind in knots)
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Last 24hrCalmCalmE3CalmSE4CalmCalmCalmN3CalmE4E7E9SE10SE10E11E9SE9SE8SE6SE6E6SE3E3
1 day ago----E4SE3E3E4CalmE3CalmE3E6E8SE10SE8SE10SE11E11SE11SE12E8SE6E4E5E4
2 days ago------------------------------------------------

Tide / Current Tables for Christmas Bay, Texas
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Christmas Bay
Click for Map
Mon -- 02:20 AM CDT     0.93 feet High Tide
Mon -- 04:46 AM CDT     0.33 feet Low Tide
Mon -- 07:10 AM CDT     Sunrise
Mon -- 11:18 AM CDT     0.87 feet High Tide
Mon -- 12:02 PM CDT     Moonrise
Mon -- 05:02 PM CDT     0.12 feet Low Tide
Mon -- 07:13 PM CDT     Sunset
Mon -- 11:04 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.90.90.80.40.30.40.50.60.70.80.90.90.80.60.40.20.10.10.20.30.40.50.6

Tide / Current Tables for Freeport Harbor, Texas
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Freeport Harbor
Click for Map
Mon -- 12:41 AM CDT     1.50 feet Low Tide
Mon -- 04:50 AM CDT     1.60 feet High Tide
Mon -- 07:11 AM CDT     Sunrise
Mon -- 12:02 PM CDT     Moonrise
Mon -- 01:18 PM CDT     0.38 feet Low Tide
Mon -- 07:13 PM CDT     Sunset
Mon -- 09:59 PM CDT     1.75 feet High Tide
Mon -- 11:05 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.51.51.61.61.61.61.51.41.210.70.50.40.40.50.70.91.11.41.61.71.81.7

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Houston/Galveston, TX (23,6,7,8)
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Ground Weather Radar Station Houston/Galveston, TX
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weather_mapweather_map weather_map

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.