Monday, June18, 2018 L-36.com


Marine Weather and Tides
Galena Park, TX

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:19AMSunset 8:25PM Monday June 18, 2018 12:10 PM CDT (17:10 UTC) Moonrise 10:36AMMoonset 11:53PM Illumination 27% 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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GMZ335 Galveston Bay- 956 Am Cdt Mon Jun 18 2018
.small craft should exercise caution...
Rest of today..Southeast winds 15 to 20 knots. Bay waters choppy. Showers and isolated Thunderstorms. Some Thunderstorms may produce heavy rainfall.
Tonight..Southeast winds 20 to 25 knots decreasing to 15 to 20 knots after midnight. Bay waters rough becoming choppy after midnight. Showers and isolated Thunderstorms. Some Thunderstorms may produce heavy rainfall.
Tuesday..Southeast winds 15 to 20 knots. Bay waters choppy. Showers and Thunderstorms. Some Thunderstorms may produce heavy rainfall.
Tuesday night..Southeast winds 15 to 20 knots. Bay waters choppy. Showers and Thunderstorms likely. Some Thunderstorms may produce heavy rainfall.
Wednesday..Southeast winds 15 to 20 knots. Bay waters choppy. A chance of showers and Thunderstorms.
Wednesday night..Southeast winds 15 to 20 knots becoming south 10 to 15 knots after midnight. Bay waters choppy becoming slightly choppy after midnight. A slight chance of showers and Thunderstorms in the evening, then a chance of showers and Thunderstorms after midnight.
Thursday..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Thursday night..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Friday..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Friday night..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 956 Am Cdt Mon Jun 18 2018
Synopsis for high island to matagorda ship channel out 60 nm.. A slow moving and weakly organized tropical wave will continue to bring strong winds and elevated seas to the region through the the first half of the week. Scattered showers and Thunderstorms will become more widespread towards daybreak Monday and continue into Tuesday, with heavy rainfall and gusty winds in the strongest storms. Small craft advisories for offshore areas, along with caution wording for the bays and inlets, will remain in effect.

7 Day Forecast for Marine Location Near Galena Park, TX
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location: 29.72, -95.25     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 181517
afdhgx
area forecast discussion
national weather service houston galveston tx
1017 am cdt Mon jun 18 2018

Discussion
A large area of rain with embedded heavier showers along the coast this
morning is gradually spreading inland, and this trend is expected to
continue for the rest of the morning and on through this afternoon.

Highest rainfall rates with some of the stronger reflectivities in around
parts of galveston and brazoria counties have been between 1 2 and
1 inch per hour, but this activity has been moving off to the northwest
pretty fast resulting in 3 hour rainfall totals around an inch or less.

Ir satellite imagery and area radars are indicating the most intense
and training rainfall so far has been focusing in around the corpus
christi area and off their coast, and this might end up being the
area to watch today.

Our area can handle activity that is spread out over time with low
rainfall rates, however, any intense rainfall rates in a short period
of time could lead to flooding issues. 42

Prev discussion issued 645 am cdt Mon jun 18 2018
aviation [12z TAF issuance]...

broad picture of today's weather is fairly straight-forward.

Periods of showers, with isolated thunder offshore this morning
developing more over land this afternoon. MVFR ceilings expected
area wide, with breezy gusty ese winds today. Showers and storms
don't really leave the picture through the forecast period.

The details for individual sites on a day like today, however, are
quite tricky. Have tried to flesh out the best chances for
thunderstorms, as well as the times where winds should be
breeziest. This seems likely to see amendments updates through the
day to best reflect the evolution of today's weather.

A final note - there is a bit of aVFR moat impacting the houston
metro terminals early this morning. It probably would have been
fair to start the TAF with prevailingVFR and tempo MVFR, but did
not want to make an already long TAF even longer for an hour or
two on the top line. Expecting MVFR to settle in across the area
early enough.

Luchs
prev discussion issued 425 am cdt Mon jun 18 2018 ...

discussion...

early morning satellite imagery shows convection blossoming over
the central gulf. This development is associated with a tropical
wave and parent upper low approaching the texas coast from the
east. Ahead of these feature, tropical moisture is still very
much in place early this morning with GOES total precipitable
water satellite imagery showing precipitable water values of
1.9-2.2 inches across southeast texas. Aircraft soundings out of
houston show that the mid-levels of the atmosphere are not quite
as saturated as previously advertised by forecast soundings
(observed dew point depression at 750 mb about 7 c versus forecast
dew point depressions 2-3 c).

While additional atmospheric moistening is expected through the
day, this somewhat drier mid-level air combined with observed
storm motions around 20-25 mph will help limit rain coverage and
accumulations to under 0.5 inches near and south of the
interstate 10 corridor through the morning commute. The potential
for higher rain totals will increase during the day, however, as
convective temperatures in the mid 80s today will allow for
scattered to numerous showers and thunderstorms to develop by mid
to late morning. Speed convergence is expected to result in the
greatest coverage over the gulf waters and south of the highway 59
corridor today, short term guidance continues to advertise
highest rain totals occurring as a result of diurnal heating with
isolated cells capable of producing localized 1-3 inch amounts in
a short period of time. This locally heavy rain may result in
localized minor urban flood issues this afternoon, but expect most
of the region to be able to handle the anticipated areal average
of anywhere from 0.25-1.5 inches of rainfall today. Cloud cover
and rain should help limit temperatures into the lower to mid 80s
today.

Loss of heating should allow for a downward trend in shower and
thunderstorm coverage over the northern counties by this evening,
but the increasing lift associated with the approach of the upper
low over the central gulf will result in periods of rain
persisting through the overnight hours across the region. Best
coverage is still anticipated to remain along the coast with
anywhere from 1-2 inches possible south of interstate 10 during
the overnight hours. Lows Tuesday morning are forecast to range
from the 70s inland to low 80s along the coast.

The upper low over the central gulf this morning is expected to
near or move over the middle lower texas coast on Tuesday. Lobes
of energy rotating around the low are expected to result in waves
or bands of rainfall moving across the region during the day and
highest rain chances are expected to occur across the southwestern
counties, closer to the center of the upper low. Precipitable
water values peak near 2.2-2.4 inches during the day tomorrow and
this, combined with long, skinny CAPE profiles on forecast
soundings, will only serve to enhance the potential for high rain
rates. Low level winds still appear to promote fairly fast storm
motions, but their nearly unidirectional profile will keep the
potential for training storms high. Forecast rain amounts for
Tuesday range from roughly 1-3 inches south of interstate 10 (and
less than that north), but training may promote locally enhanced
totals. At least a minor flooding risk will continue to exist on
Tuesday from locally heavy rain, but the actual flooding risk is
going to be highly dependent on what happens today. The region
should be able to handle 3-4 inches of rain over the course of an
afternoon and if we see that today, concerns will be heightened
for tomorrow. Conversely... If we don't, concerns will be lowered.

Periods of rain will continue Tuesday night into Thursday as the
upper low wobbles along the middle lower texas coast. The threat
for locally heavy rain will persist through these periods with the
deep tropical moisture in place, but given the highly uncertain
nature of what the region's sensitivity to additional rainfall
will be as a result of its dependence on what happens today and
tomorrow... Only highlighting the potential for localized flooding
concerns. Rain chances will begin to taper off sometime Thursday
night or Friday as a passing upper trough over the central plains
shunts the low inverted trough over south texas into mexico, with
broad mid-level ridging becoming established across the region by
this weekend. This should result in gradually warming temperatures
and low, mainly seabreeze driven rain chances this weekend.

Huffman
marine...

a slow moving, weakly organized tropical wave continues to drift
over the western gulf of mexico. The small craft advisory will
continue through the day Tuesday, and has been extended into
Wednesday morning for the offshore waters as seas will subside
slowly. Scattered showers and thunderstorms have become more
numerous overnight, and this trend is expected through today.

Tides are expected to remain 1 to 1.5 feet above astronomical
levels today, with high tide at the galveston bay entrance peaking
a little over 3 feet above mllw at high tide this morning. A
reasonable worst case would take tides to nearly 3.5 feet above
mllw, and for that reason, a coastal flood advisory continues for
vulnerable locations along the bolivar peninsula. Strong rip
currents will again be a threat on gulf facing beaches.

Luchs

Preliminary point temps pops
College station (cll) 86 74 84 74 86 70 50 70 40 70
houston (iah) 82 76 83 76 86 80 80 80 50 60
galveston (gls) 82 80 84 81 86 80 80 80 60 50

Hgx watches warnings advisories
Tx... High rip current risk through this evening for the following
zones: brazoria islands... Matagorda islands.

Small craft should exercise caution from Tuesday evening through
Wednesday morning for the following zones: matagorda
islands.

Coastal flood advisory until 3 pm cdt Tuesday for the following
zones: galveston island and bolivar peninsula.

Gm... Small craft should exercise caution through Wednesday morning
for the following zones: galveston bay... Matagorda bay.

Small craft should exercise caution from Tuesday evening through
Wednesday morning 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.

Small craft advisory until 7 pm cdt Tuesday 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.

Small craft advisory until 10 am cdt Wednesday 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
NCHT2 - 8770777 - Manchester, TX 1 mi41 min SE 4.1 G 7 78°F 86°F1013.6 hPa
MGPT2 - 8770613 - Morgans Point, TX 14 mi41 min SSE 6 G 12 78°F 85°F1014.8 hPa
EPTT2 - 8771013 - Eagle Point, TX 24 mi41 min S 14 G 18 80°F 83°F1014.1 hPa
GRRT2 34 mi41 min SSE 8.9 G 12 79°F 83°F1013.5 hPa
GTOT2 37 mi41 min S 5.1 G 11 79°F 87°F1013.5 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 37 mi41 min S 15 G 20 77°F 84°F1013.4 hPa
RLOT2 - 8770971 - Rollover Pass, TX 42 mi41 min SSE 24 G 28 78°F 82°F1014.5 hPa
LUIT2 45 mi41 min S 13 G 19 80°F 1013.1 hPa
HIST2 46 mi41 min ESE 8 G 12 78°F 85°F1015.1 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston, Houston Hobby Airport, TX5 mi18 minESE 910.00 miOvercast79°F77°F94%1014.6 hPa
John Dunn Helistop, TX8 mi16 minVar 39.00 miA Few Clouds79°F73°F84%1014.2 hPa
Houston, Pearland Regional Airport, TX14 mi18 minSSE 1110.00 miPartly Cloudy80°F75°F85%1014.5 hPa
Houston Intercontinental Airport, TX18 mi18 minSE 131.50 miHeavy Rain Fog/Mist76°F75°F97%1014.9 hPa
Houston Southwest Airport, TX19 mi16 minESE 9 G 1610.00 miMostly Cloudy81°F75°F85%1014.2 hPa
Houston, Sugar Land Municipal / Hull Field Airport, TX22 mi18 minE 910.00 miMostly Cloudy83°F73°F74%1013.6 hPa

Wind History from HOU (wind in knots)
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Last 24hrE11
G20
E15
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E10E12SE13SE13
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SE10SE6SE7SE11E8SE7SE8SE5E3E3E4S3E6SE10SE4SE4SE5E9
1 day agoE8SE12SE10E13
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E12SE9SE7E7E7E3SE5SE6SE5SE5SE5CalmCalmSE7E5E9NE5Calm
2 days agoE4E9SE9S11SE10
G17
SE11S11SE7SE9S5SE5SE4S4SE4SE3S3CalmE3E4SE5SE7SE10SE10SE10

Tide / Current Tables for Houston Ship Channel, Galveston Bay, Manchester, Texas
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Houston Ship Channel
Click for Map
Mon -- 12:10 AM CDT     Moonset
Mon -- 06:20 AM CDT     Sunrise
Mon -- 07:43 AM CDT     0.04 feet Low Tide
Mon -- 11:36 AM CDT     Moonrise
Mon -- 04:15 PM CDT     1.72 feet High Tide
Mon -- 08:23 PM CDT     Sunset
Mon -- 10:53 PM CDT     1.24 feet Low Tide
Mon -- 11:50 PM CDT     1.24 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.210.80.60.40.20.100.10.30.611.31.51.71.71.71.61.51.41.31.31.2

Tide / Current Tables for San Jacinto Battleground State Historic Site, Texas
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San Jacinto Battleground State Historic Site
Click for Map
Mon -- 12:09 AM CDT     Moonset
Mon -- 06:19 AM CDT     Sunrise
Mon -- 07:22 AM CDT     -0.13 feet Low Tide
Mon -- 11:35 AM CDT     Moonrise
Mon -- 04:32 PM CDT     1.44 feet High Tide
Mon -- 08:23 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.90.70.50.30.1-0-0.1-0.100.20.50.811.21.41.41.41.41.31.21.111

Weather Map and Satellite Images
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wmap_A
GOES Local Image of SouthCentralPlains    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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (13,3,4,5)
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Ground Weather Radar Station Houston/Galveston, TX
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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.