Tuesday, November20, 2018 L-36.com


Marine Weather and Tides
Bolivar Peninsula, TX

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:46AMSunset 5:23PM Tuesday November 20, 2018 7:46 AM CST (13:46 UTC) Moonrise 4:00PMMoonset 4:00AM Illumination 94% Phase: Waxing Gibbous; Moon at 12 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- 322 Am Cst Tue Nov 20 2018
Today..North winds 10 to 15 knots. Bay waters slightly choppy.
Tonight..Northeast winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the morning, then a chance of showers in the afternoon.
Wednesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy. Showers likely in the evening. A slight chance of Thunderstorms until early morning. A chance of showers after midnight.
Thursday..Northeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
Thursday night..East winds 5 to 10 knots. Bay waters smooth.
Friday..East winds 5 to 10 knots becoming south in the afternoon. Bay waters smooth. A chance of showers.
Friday night..Northwest winds 5 to 10 knots. Bay waters smooth.
Saturday..West winds around 5 knots becoming south in the afternoon. Bay waters smooth.
Saturday 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 322 Am Cst Tue Nov 20 2018
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate offshore winds and elevated seas can be expected today. The elevated northeast winds will continue for the next couple days. A couple of disturbances will move across the area and will lead to unsettled weather Wednesday afternoon through Thursday morning and again on Friday. Winds will swing around to the south on Saturday. Current forecast has a strong cold front moving through the waters on Sunday.


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


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 201129
afdhgx
area forecast discussion
national weather service houston galveston tx
529 am cst Tue nov 20 2018

Aviation
Vfr across SE tx through tomorrow morning. North winds can be
expected today with a decrease in speeds this afternoon and
overnight. Northeast winds are expected tomorrow, and look for
increasing clouds as the day progresses. Any -ra -shra should
hold off until tomorrow afternoon, and the best chances are
anticipated tomorrow night through early Thursday morning. 42

Prev discussion issued 338 am cst Tue nov 20 2018
discussion...

though the weather pattern looks to remain quite active for at
least the next week, its impacts on most of southeast texas look
to be relatively limited. Look for chances of rain Wednesday into
Wednesday night, Friday, and Sunday. For us, we're mainly looking
at light rain, with other areas seeing the brunt of this active
pattern. The active pattern will also make for variable
temperatures over the holiday week, but should also keep us from
seeing any strong temperature extremes.

Near term [through today]...

though the radar is blank, nighttime satellite imagery indicates
that we're looking at the last remnants of our recent frontal
passage, with some stubborn low clouds trying to clear out late
tonight. Where things have cleared out up north, we'll look for
chilly lows in the upper 30s and lower 40s. Clouds are still in
place holding temps up near the coast, but expectations are still
to clear out soon enough that we can radiate a handful of degrees
below climo.

With solid northwest flow, tomorrow is going to be a chilly one.

High temperatures look to only reach to around 60 degrees, which
is a good 10 or so degrees below seasonal averages. But, on the
plus side, skies should be nice and blue with plenty of sun. So,
while it may be colder than typical, all in all we should be
looking at a pleasant day.

Short term [tonight through Thursday]...

another colder night tonight, and with skies staying clear, lows
should reach to near or even a hair below the previous night. Look
for skies to cloud up pretty quickly from the southwest on
Wednesday as a coastal trough low develops down the coast. As it
moves up through our area, it will bring a chance of rain, and
maybe even a thunderstorm or two Wednesday into very early
Thursday morning, but the most significant impact is likely to be
offshore.

Other than rain chances winding down, skies beginning to break
some, and thus highs looking to warm slightly, there's not much to
be said about Thursday's weather. This should leave plenty of time
to investigate tryptophan delta rates, green bean casserole
gradients, wave patterns in cranberry sauce (canned only), and the
like.

Long term [Thursday night through Tuesday]...

a cold front trailing a low way up north (like canada, north)
looks to meet up with another coastal trough low developing along
the texas coast at the end of the week. Again, a chance for rain
returns Friday, but again the coastal low looks to pass by the
area offshore. Finally, another cold front looks to sweep through
the area Sunday as a low develops in colorado, hooks through
oklahoma, then ejects to the great lakes. Yet again, there's broad
consensus for us seeing mainly light rain, particularly east of
i-45 in this case.

We should see a gradual warming trend into this weekend as onshore
flow should be in place for most of this period, except for brief
periods as these coastal lows fly through. Highs may even start to
drift a little above normal into the 70s. Sunday's front will put
an end to that with northerly flow and cold advection. It does
look to be the strongest temperature feature of the week, and we
should see temperatures drop noticeably behind the front... But the
real cold pool with this trough is missing is pretty safely. So,
while we'll be back to colder temps, we may even entirely escape
the threat for brief freezing temps across the entire area - even
well north of the houston metro. I suppose one perk of the active
pattern is that despite a frequent barrage of cooler shots, we
aren't yet managing a real big punch of frigid air. Just need to
remember that it's early in the season yet.

Marine...

marine flags will be up this morning for elevated north winds and
seas, and they might need to be extended into the afternoon
hours. Moderate northeast winds can be expected Wednesday through
Thursday morning. Showers (and maybe a thunderstorm or two) will
move across the waters mainly Wednesday afternoon through Thursday
morning. A surface low moving up the coast will bring another
good shot of storms on Friday. Northwest to north winds behind
this system will swing around to the south on Saturday as the next
storm system organizes around the texas- oklahoma panhandle area.

This system will sweep a strong cold front through the area on
Sunday. 42

Preliminary point temps pops
College station (cll) 60 39 59 45 63 0 0 30 40 10
houston (iah) 61 42 61 47 64 0 0 30 60 10
galveston (gls) 60 52 60 53 63 0 0 30 60 20

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution until noon cst today for the
following zones: coastal waters from freeport to matagorda
ship channel tx out 20 nm... Coastal waters from high island
to freeport tx out 20 nm... Matagorda bay.

Small craft advisory until noon cst today for the following
zones: waters from freeport to matagorda ship channel tx
from 20 to 60 nm... Waters from high island to freeport tx
from 20 to 60 nm.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RLOT2 - 8770971 - Rollover Pass, TX 3 mi28 min NNE 11 G 12 48°F 55°F1024.5 hPa
HIST2 12 mi34 min N 7 G 8.9 47°F 57°F1024.6 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 13 mi34 min NNE 16 G 20 49°F 59°F1023.9 hPa
GTOT2 17 mi28 min NNE 12 G 16 50°F 61°F1024.2 hPa
42035 - GALVESTON 22NM East of Galveston, TX 19 mi36 min NNE 21 G 25 55°F 66°F1024 hPa53°F
EPTT2 - 8771013 - Eagle Point, TX 19 mi28 min NNE 11 G 16 50°F 55°F1025.1 hPa
KXIH 22 mi11 min NNE 18 54°F 48°F
GRRT2 22 mi28 min N 12 G 26 50°F 55°F1024.2 hPa
MGPT2 - 8770613 - Morgans Point, TX 26 mi28 min N 8 G 9.9 47°F 58°F1025.1 hPa
SRST2 - Sabine Pass, TX 31 mi46 min NNE 12 G 15 50°F 1024.3 hPa (+1.4)
TXPT2 40 mi28 min N 12 G 15 49°F 57°F1023.5 hPa
SBPT2 - 8770570 - Sabine Pass North, TX 40 mi28 min N 13 G 16 50°F 61°F1025.9 hPa
LUIT2 41 mi28 min NNE 17 G 20 51°F 1024 hPa
NCHT2 - 8770777 - Manchester, TX 41 mi28 min NNE 4.1 G 7 46°F 65°F1024.7 hPa
PORT2 - 8770475 - Port Arthur, TX 42 mi28 min N 8 G 8.9 48°F 59°F1024.7 hPa

Wind History for Rollover Pass, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galveston, Scholes Field, TX22 mi54 minNNE 1810.00 miFair and Breezy50°F45°F83%1024.3 hPa
High Island 179A (Apache Corp), LA22 mi51 minNNE 229.00 miOvercast and Breezy54°F48°F82%1023 hPa

Wind History from XIH (wind in knots)
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1 day agoE10E11E11E9SE10SE8E8SE10SE10E13E12E11E12SE10N11N9N7N13N14N14N15N14NE14N15
2 days agoNE7NE11NE11NE11E12E13
G19
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Tide / Current Tables for Gilchrist, East Bay, Texas
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Gilchrist
Click for Map
Tue -- 03:59 AM CST     Moonset
Tue -- 04:29 AM CST     1.19 feet High Tide
Tue -- 06:46 AM CST     Sunrise
Tue -- 12:11 PM CST     0.36 feet Low Tide
Tue -- 03:59 PM CST     Moonrise
Tue -- 05:20 PM CST     Sunset
Tue -- 06:09 PM CST     1.20 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.811.11.21.21.110.80.60.50.40.40.40.50.70.91.11.21.21.110.90.9

Tide / Current Tables for Galveston Bay Entrance, Texas Current
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Galveston Bay Entrance
Click for Map
Tue -- 01:15 AM CST     0.76 knots Max Flood
Tue -- 03:13 AM CST     -0.00 knots Slack
Tue -- 04:00 AM CST     Moonset
Tue -- 06:46 AM CST     Sunrise
Tue -- 07:33 AM CST     -1.97 knots Max Ebb
Tue -- 11:25 AM CST     0.00 knots Slack
Tue -- 02:12 PM CST     1.63 knots Max Flood
Tue -- 04:00 PM CST     Moonrise
Tue -- 05:21 PM CST     Sunset
Tue -- 06:07 PM CST     -0.00 knots Slack
Tue -- 08:36 PM CST     -0.80 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.70.60.1-0.5-1-1.6-1.9-1.9-1.6-1-0.30.51.31.61.51.10.60.1-0.4-0.7-0.8-0.6-0.4

Weather Map and Satellite Images
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GOES 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.
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Wind Forecast for Houston/Galveston, TX (8,2,3,4)
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Ground Weather Radar Station Houston/Galveston, TX
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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 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.