Saturday, November18, 2017 L-36.com


Marine Weather and Tides
Bolivar Peninsula, 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 6:45AMSunset 5:24PM Saturday November 18, 2017 7:23 PM CST (01:23 UTC) Moonrise 6:45AMMoonset 5:53PM Illumination 0% Phase: New Moon; Moon at 0 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 Matagorda Bay-galveston Bay- 517 Pm Cst Sat Nov 18 2017
.small craft advisory in effect through Sunday morning...
Tonight..North winds 20 to 30 knots with gusts to near gale force. Bay waters very rough.
Sunday..North winds 15 to 20 knots decreasing to 10 to 15 knots in the afternoon. Bay waters choppy becoming slightly choppy in the afternoon.
Sunday night..Northeast winds 5 to 10 knots. Bay waters smooth.
Monday..East winds around 10 knots becoming southeast in the afternoon. Bay waters smooth to slightly choppy.
Monday night..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers after midnight.
Tuesday..East winds 5 to 10 knots. Bay waters smooth. A slight chance of showers.
Tuesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
Wednesday..North winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday night..North winds 10 to 15 knots. Bay waters slightly choppy.
Thursday..North winds 5 to 10 knots. Bay waters smooth.
Thursday night..North 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 517 Pm Cst Sat Nov 18 2017
Synopsis for high island to matagorda ship channel out 60 nm.. A strong cold front will push off the coast early this evening with strengthening offshore winds and increasing sea heights in its wake. Frequent gale force gusts are expected tonight with elevated winds and waves persisting through Sunday morning. Weakening northeast winds and lowering seas can be expected late Sunday afternoon through Sunday night. Light to moderate east to southeast winds can then be expected until the next cold front moves through the area late Tuesday into early Wednesday.

7 Day Forecast for Marine Location Near Bolivar Peninsula CDP, TX
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location: 29.49, -94.56     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 182311
afdhgx
area forecast discussion
national weather service houston galveston tx
511 pm cst Sat nov 18 2017

Aviation
Front is in the process of pushing off the coast.VFR conditions
are expected in its wake across southeast texas, but gusty north
winds 20-30kts will remain a concern for a good part of the
evening and overnight hours... Stronger at the coast. Will probably
see the gustiness taper off 6-9z inland, followed by some 12-20kt
gusts again toward mid morning sun. 47

Prev discussion issued 302 pm cst Sat nov 18 2017
strong cold front continues to push across southeast tx late this
afternoon as advertised. Leading wind shift has moved to a ne-sw
oriented axis just off the tx coast at 21z, with reinforcing front
and 10 degree colder air lagging behind about 50-75 miles. Strong
northerly winds accompany this shot of colder air and afternoon
models are consistent in cranking these winds up along the coast
this evening as it pushes into the gulf. We have been seeing some
30-35 mph gusts as front pushed through college station earlier,
which will likely be even stronger along and just off the coast
this evening. Sunday will start noticeably colder with morning
mins in the lower to mid 40s roughly north of i-10 and west of
u.S. 59, and around 50f nearer the coast. Highs tomorrow will top
out in the low to mid 60s.

The return to normal or just below weather will hold through the
beginning of the week, although return flow will bring MAX ts back
in the lower 70s Tuesday along with a chance of showers near the
coast. This will increase ahead of another cold front bringing
seasonably cool and dry weather for the area through thanksgiving
and into next weekend.

Marine...

the cold front looked to be on the previously forecasted schedule
and should be off of the coast around or shortly after sunset.

Moderate southwesterly winds ahead of the front will likely diminish
slightly just ahead of the actual front. Strong offshore winds will
then develop behind the frontal passage with frequent gusts to over
gale force expected tonight. Seas will respond and should reach into
the 8 to 11 foot range with occasionally higher wave heights. High
pressure ridging will help end ease the thermal gradient and surface
pressure gradient and lead to a diminishing of winds and seas to
below advisory criteria by late in the morning to midday Sunday.

Low water levels are likely over the upper reaches of the bays and
into the houston ship channel, especially with a strong northwest to
north wind developing this evening. Lowest levels are wind speed and
direction dependent but there are indications that levels could get
to between one-half and one foot below predicted levels during the
times of low tides Sunday afternoon or evening.

As stated earlier this morning, light northeasterly winds will
gradually become onshore by Tuesday ahead of the next cold front
moving into the waters late Tuesday or Wednesday, with another round
of caution or advisory flags possibly needed in its wake.

40
fire...

elevated fire weather conditions will be possible on Sunday behind a
strong cold front as drier air results in minimum relative
humidities falling to near 30 percent. 20 foot wind speeds will
start out in the early morning between 10 and 15 mph over the
central and coastal areas. However these should diminish throughout
the day. There may be a brief period during the midday period for
elevated fire conditions over the southwestern set of counties,
especially in locations where finer fuels such as grasses have dried.

40

Preliminary point temps pops
College station (cll) 43 64 41 66 51 0 0 0 0 0
houston (iah) 46 66 43 66 54 0 0 0 0 10
galveston (gls) 54 64 54 67 62 10 0 0 0 20

Hgx watches warnings advisories
Tx... Wind advisory until 6 am cst Sunday for the following zones:
brazoria... Chambers... Galveston... Jackson... Matagorda.

Gm... Small craft advisory until 9 am cst Sunday for the following
zones: galveston bay... Matagorda bay.

Small craft advisory until 9 pm cst this evening 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.

Small craft should exercise caution until 6 pm cst this evening
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.

Gale warning from 9 pm this evening to 9 am cst Sunday 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.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
42035 - GALVESTON 22NM East of Galveston, TX 19 mi93 min W 9.7 G 12 74°F 72°F4 ft1012.1 hPa (+1.7)72°F
KXIH 22 mi28 min N 14 G 23 75°F 57°F
SRST2 - Sabine Pass, TX 31 mi83 min NNW 15 G 19 76°F 1012.7 hPa (+2.1)62°F

Wind History for Rollover Pass, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galveston, Scholes Field, TX22 mi31 minNNW 24 G 3310.00 miOvercast and Windy74°F52°F46%1015.2 hPa
High Island 179A (Apache Corp), LA22 mi28 minN 14 G 2310.00 miOvercast75°F57°F54%1013.9 hPa

Wind History from GLS (wind in knots)
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Last 24hrS11S12S13S15S13S10S11S12S13S13S13S10S12SW13SW19
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SW10NW9NW6NW25
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1 day agoSE8SE6E7SE8SE7SE8SE8SE9SE7SE6SE4SE5S5SE7S9S9S9S10S12S12S11S9S8S8
2 days agoE8E8E7E6SE6E6SE5SE7E7E5E4E4E4E7E8E9E11E11E10E11E11E8E8E8

Tide / Current Tables for Rollover Pass, Texas
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Rollover Pass
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Sat -- 01:52 AM CST     1.21 feet Low Tide
Sat -- 03:57 AM CST     1.25 feet High Tide
Sat -- 05:42 AM CST     New Moon
Sat -- 06:44 AM CST     Moonrise
Sat -- 06:44 AM CST     Sunrise
Sat -- 01:00 PM CST     0.02 feet Low Tide
Sat -- 05:21 PM CST     Sunset
Sat -- 05:53 PM CST     Moonset
Sat -- 11:47 PM CST     1.33 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.21.21.21.21.21.110.70.50.30.20.100.10.20.40.70.91.11.21.31.31.3

Tide / Current Tables for Galveston Bay Entrance, Texas Current
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Galveston Bay Entrance
Click for Map
Sat -- 01:41 AM CST     0.00 knots Slack
Sat -- 02:35 AM CST     0.12 knots Max Flood
Sat -- 03:21 AM CST     -0.00 knots Slack
Sat -- 05:42 AM CST     New Moon
Sat -- 06:44 AM CST     Moonrise
Sat -- 06:45 AM CST     Sunrise
Sat -- 08:52 AM CST     -2.55 knots Max Ebb
Sat -- 01:04 PM CST     0.00 knots Slack
Sat -- 04:12 PM CST     2.10 knots Max Flood
Sat -- 05:22 PM CST     Sunset
Sat -- 05:54 PM CST     Moonset
Sat -- 09:38 PM CST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-0.20.10.1-0.3-0.9-1.6-2-2.4-2.5-2.3-1.7-1-0.10.91.72.121.61.20.70.2-0.1-0.2

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 (20,4,5,8)
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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.