Friday, May26, 2017 L-36.com


Marine Weather and Tides
Anahuac, TX

Version 3.4
What's New / NOTES
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 6:19AMSunset 8:14PM Friday May 26, 2017 2:15 AM CDT (07:15 UTC) Moonrise 6:18AMMoonset 8:19PM Illumination 0% Phase: New Moon; Moon at 1 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- 134 Am Cdt Fri May 26 2017
.small craft advisory in effect until 10 am cdt this morning...
Rest of today..South winds 20 to 25 knots through diminishing to 15 to 20 knots after 9 am. Bay waters choppy to rough.
Tonight through Saturday night..South winds 10 to 15 knots. Bay waters slightly choppy.
Sunday..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
Sunday night..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Monday..Southeast winds 5 to 10 knots becoming east in the afternoon. Bay waters smooth. A chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Monday night..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Tuesday..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Tuesday night..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 134 Am Cdt Fri May 26 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate to strong onshore winds this morning will diminish slightly through the mid and late morning hours. Moderate onshore winds and slightly elevated seas can be expected through Monday. Winds and seas should gradually relax by late Monday though rain chances will increase as a front drifts down to and then stalls near the coast Monday night.

7 Day Forecast for Marine Location Near Anahuac, TX
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location: 29.73, -94.7     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 260447
afdhgx
area forecast discussion
national weather service houston galveston tx
1147 pm cdt Thu may 25 2017

Discussion
06z aviation... A stratus deck around 1500 ft is moving into the
area from the sw. Expecting MVFR ceilings to spread across all of
the TAF sites between 7z (cll) and 11z (gls). It is possible that
cll will see a brief period of ifr ceilings towards 12z. Should
see clouds rise above 3 kft and become sct early to mid
afternoon. Will see 10 to 20 kt sustained south winds again
tomorrow by mid-morning. Expect the MVFR ceilings to return
Friday evening. 33

Prev discussion issued 828 pm cdt Thu may 25 2017
update...

surface high pressure is continuing to shift east this evening,
placing SE tx in an area of weakness between systems tonight
through Saturday. Expect winds to pick up tonight across the
region as the surface pressure gradient tightens around 00z. This
should help to prohibit any chances of fog for Friday morning.

Onshore winds will begin to weaken in speed by Friday afternoon.

Overnight low temperatures tonight should be slightly above
normal for this time of year, with mid to upper 70s along the
coast and low to mid 70s farther inland.

The largest concern in the forecast as we move into Friday and
this weekend will be the heat. Friday's forecasted high
temperatures bring much of the western zones into the low 90s, and
eastern zones into the upper 80s. Along the coast, high
temperatures will reach into the mid 80s. With onshore flow
continuing through late Sunday, dewpoints will be on the rise
toping off in the mid 70s. The forecast overall seems to be in
good shape, therefore only tweaked the temperatures and dewpoints
a tad to account for current observations.

Hathaway
prev discussion... Issued 624 pm cdt Thu may 25 2017
discussion...

00z aviation... The main concern is the development of MVFR
ceilings. Expect to see some low clouds begin to form after 6z
across western portions of the area (cll). Will likely see these
develop between 1-2 kft and eventually become bkn. Not sure how
far east these clouds will extend during the early morning hours,
but by 15z expect most of the area to see MVFR ceilings. Will see
southerly winds continue overnight around 10 kts, becoming closer
to 15 kts with mixing again tomorrow. 33
prev discussion... Issued 409 pm cdt Thu may 25 2017
discussion...

regional temperatures reaching the 90 f mark today... With increasing
humidity... A signal of what to expect in the coming days. Very warm
and humid weather over the next several days. More overcast skies
will have mornings starting out warm with maximum temperatures still
forecast to reach the average upper 80s. This will equate to upper
90 to lower 100 heat indices for a couple of hours during the mid
to late afternoon hours.

The late week near-zonal mid to upper flow pattern will undergo
slightly change as a gulf-centered upper ridge builds up to the
northwest in response to deepening upstream great basin upper
troughing. This will likely make Saturday the warmest day of the
week. A fairly tight onshore pressure gradient between florida-
based high pressure and lowering western plains pressures will
produce a few days of breezy onshore winds. Sunday will be the
transition day as the upper levels become more diffulent and lower
level moisture picks up to well above normal seasonable values.

An approaching weak cold frontal boundary stalling somewhere over
southeastern texas early Monday could easily be the focus needed
to generate (frequent) periods of showers and storms. A series of
shortwave trough passages both on Monday and then again on Wednesday
will keep precipitation chances high early next week. Way too early
to determine QPF or the location of most the susceptible counties
(for strong to severe weather) but confidence is growing that there
will be a rain event on memorial day... This trend may easily continue
for a third year. As of now... The main threat will be from slow
moving storm clusters putting down high enough rainfall rates that
could induce localized flooding issues. Tuesday and Wednesday's
convective behavior will be highly dependent upon Monday's chain
of events. 31
marine...

strong onshore winds will persist tonight in response to low pressure
over southwest kansas and high pressure over the eastern gulf. A small
craft advisory is in effect for the gulf waters for tonight. A moderate
onshore flow will prevail through the weekend with low pressure over
west texas and high pressure over the eastern gulf of mexico. A scec will
likely be required at times through the weekend. A weak cold front will
approach SE tx Sunday night but is not forecast to make it off the coast.

Lighter onshore flow is forecast for the beginning of next week. Scattered
thunderstorms will also be possible on memorial day and mariners should
remain ALERT for lightning and possibly variable winds in and near storms.

43

Preliminary point temps pops
College station (cll) 72 91 76 93 76 0 10 10 10 20
houston (iah) 74 90 78 92 78 0 10 10 10 10
galveston (gls) 78 85 80 86 79 0 10 10 10 10

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution until 7 am cdt Friday for
the following zones: galveston bay... Matagorda bay.

Small craft advisory until 7 am cdt Friday for the following
zones: coastal waters from freeport to the matagorda ship
channel out 20 nm... Coastal waters from high island to
freeport out 20 nm... Waters from freeport to the matagorda
ship channel from 20 to 60 nm... Waters from high island to
freeport from 20 to 60 nm.

Discussion... 33


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGPT2 - 8770613 - Morgans Point, TX 15 mi45 min S 13 G 16 76°F 79°F1009.4 hPa
RLOT2 - 8770971 - Rollover Pass, TX 18 mi45 min S 12 G 18 76°F 76°F1010.2 hPa
HIST2 19 mi45 min S 15 G 21 76°F 78°F1010.3 hPa
LYBT2 20 mi45 min SSE 9.9 G 16 75°F 79°F1008.5 hPa
EPTT2 - 8771013 - Eagle Point, TX 21 mi45 min S 18 G 23 77°F 77°F1009.7 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 26 mi45 min SSE 22 G 25 79°F1009.7 hPa
GTOT2 29 mi45 min 77°F 79°F
NCHT2 - 8770777 - Manchester, TX 30 mi45 min S 8 G 11 75°F 78°F1009.5 hPa
GRRT2 31 mi45 min S 14 G 19 77°F 78°F1010 hPa
SRST2 - Sabine Pass, TX 35 mi75 min S 21 G 24 76°F 1011.3 hPa (+0.7)68°F
42035 - GALVESTON 22NM East of Galveston, TX 38 mi85 min S 21 G 25 78°F 78°F5 ft1010.1 hPa (+0.5)70°F
KXIH 39 mi20 min SW 16 G 24 77°F 68°F
PORT2 - 8770475 - Port Arthur, TX 42 mi45 min S 9.9 G 17 75°F 78°F1010.6 hPa
SBPT2 - 8770570 - Sabine Pass North, TX 44 mi45 min S 18 G 24 76°F 80°F1011.7 hPa
TXPT2 46 mi45 min S 22 G 27 76°F 78°F1010.8 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX26 mi85 minSSE 710.00 miA Few Clouds73°F66°F78%1010.5 hPa

Wind History from EFD (wind in knots)
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Last 24hr--S4--S4S4S4S4S9S11S15S15
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1 day agoNW7NW9NW7NW5W5W4W4W7W8W7W10NW14NW14--NW11
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2 days agoN7N7N4NW5N7N12N5NW9NW7NW5N6N5NW4CalmN5E5E3SE5E6SW8N10N7N11NW8

Tide / Current Tables for Round Point, Trinity Bay, Galveston Bay, Texas (sub)
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Round Point
Click for Map
Fri -- 01:33 AM CDT     0.97 feet High Tide
Fri -- 03:50 AM CDT     -0.32 feet Low Tide
Fri -- 06:20 AM CDT     Sunrise
Fri -- 07:18 AM CDT     Moonrise
Fri -- 05:20 PM CDT     1.28 feet High Tide
Fri -- 05:23 PM CDT     0.93 feet Low Tide
Fri -- 08:11 PM CDT     Sunset
Fri -- 09:19 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
110.90.1-0.3-0.3-0.2-0.100.20.40.60.80.91.11.21.31.30.90.90.90.911

Tide / Current Tables for Point Barrow, Trinity Bay, Texas
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Point Barrow
Click for Map
Fri -- 03:19 AM CDT     -0.34 feet Low Tide
Fri -- 06:20 AM CDT     Sunrise
Fri -- 07:19 AM CDT     Moonrise
Fri -- 12:30 PM CDT     1.39 feet High Tide
Fri -- 04:40 PM CDT     1.02 feet Low Tide
Fri -- 08:12 PM CDT     Sunset
Fri -- 09:12 PM CDT     1.11 feet High Tide
Fri -- 09:19 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.1-0.2-0.3-0.3-0.200.30.60.91.11.31.41.41.31.11111.11.11.11.11

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 (3,6,7,8)
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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.