Saturday, February23, 2019 L-36.com


Marine Weather and Tides
West University Place, 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 6:52AMSunset 6:17PM Saturday February 23, 2019 8:31 AM CST (14:31 UTC) Moonrise 10:55PMMoonset 9:52AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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- 312 Am Cst Sat Feb 23 2019
.dense fog advisory in effect until 10 am cst this morning...
Today..South winds 10 to 15 knots becoming west in the afternoon. Bay waters slightly choppy. Widespread dense fog in the morning. A chance of showers early in the morning. Showers and Thunderstorms likely late in the morning, then a slight chance of showers early in the afternoon.
Tonight..West winds 5 to 10 knots becoming northwest 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight.
Sunday..North winds 10 to 15 knots decreasing to 5 to 10 knots in the afternoon. Bay waters slightly choppy becoming smooth in the afternoon.
Sunday night..Northeast winds 5 to 10 knots increasing to 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight.
Monday..East winds 10 to 15 knots. Bay waters slightly choppy.
Monday night..East winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Tuesday..East winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers.
Tuesday night..East winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight. A chance of showers.
Wednesday..East winds around 5 knots. Bay waters smooth. A slight chance of showers.
Wednesday night..East winds 5 to 10 knots. Bay waters smooth. A slight chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 312 Am Cst Sat Feb 23 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Dense sea fog will persist until late morning and early afternoon Saturday. A cold front will push through by early afternoon, helping to improve visibilities and eliminate fog. A reinforcing front will push off the coast early Sunday morning. Winds will veer to the east on Monday and persist through midweek.


7 Day Forecast for Marine Location Near West University Place, TX
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location: 29.72, -95.36     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 231138
afdhgx
area forecast discussion
national weather service houston galveston tx
538 am cst Sat feb 23 2019

Aviation
Visibilites have improved south of the warm front which is draped
south of cll but north of uts, but ceilings remain at ifr lifr
criteria across all SE tx terminals this morning. A cold front
will push from NW to SE across the area this morning and into the
early afternoon, reaching cll around 12z and gls closer to 18z.

Showers and isolated thunderstorms will be possible ahead of and
along the boundary with this frontal passage. Behind the cold
front, conditions will improve as drier, cooler air ushers in.

Vfr conditions are anticipated by this afternoon, clearing from nw
to se. Winds will strengthen and be gusty at times (mainly during
the afternoon) with the passing of the front. A secondary shot of
colder and drier air will push into the region during the early
morning hours Sunday, and as a result winds will shift more
northerly between 9 and 13 kts.

Hathaway

Prev discussion issued 348 am cst Sat feb 23 2019
discussion...

a rather complicated weather pattern this morning. At 3 am, a warm
front extended across SE tx with areas of dense fog north of the
front and along the coast with improved visibility to the south of
the warm front. The front will march slowly north this morning and
most of SE tx will be south of the warm front by 12z. Will be
watching trends but think the dense fog advisory may be canceled
around 12z as visibility improves everywhere but along the
immediate coast where sea fog will remain in place until later
this morning. Low pressure had developed over NE new mexico with a
weak trough of low pressure or dry line extending south from the
low. The actual cold front still lags behinds in eastern nm. The
low will accelerate to the NE this morning toward southern ks and
this will allow the cold front to catch up to the dry line trough
and rapidly push across the state. The front will trigger a line
of shra tsra between 8-11 am as it crosses SE tx. Pw values
increase to between 1.30 and 1.60 inches but forecast soundings
show capping in the 850-700 mb layer. The cap is forecast to erode
but not so sure that it will. Low level lapse rates are meager
but mid level lapse rates look robust. SE tx looks to be in a rrq
by 18z but by then the front will have already cleared the coast.

It just kind of looks like severe weather parameters are a bit out
of phase and instability parameters look much less impressive
than yesterday so think it'll be just a broken line of showers and
thunderstorms this morning. SPC has much of SE tx outlooked in
marginal risk for the potential for strong storms. 12z soundings
will probably give a better idea of cap strength. High pops still
in order as most areas should see some showers ahead of the front
and shra tsra with the FROPA later this morning.

High temperatures today will be tricky. A very warm start to the
day with temperatures near or exceeding 70 degrees. Skies will
clear rapidly behind the front before cirrus begins to stream
overhead later in the afternoon. West winds will develop behind
the front will increase and become gusty but the cold air
advection looks weak in the wake of the front. Would not be
surprised if a few locations reached 80 degrees today. The cirrus
and mixing from the winds should limit how warm it gets today.

Generally clear skies are tonight through early Monday. Clouds
begin to return late Monday as onshore winds return and low level
moisture increases. Pw values increase to around 1.15 inches and
the moisture profile becomes saturated between the sfc and 800 mb.

Capping is noted above the saturated layer so would expect
just scattered showers beginning late Monday night and probably
persisting into Wednesday. Global models diverge with how to
handle the next cold front. The ECMWF still brings the front
through on Thursday while the GFS and canadian hold the front back
until Saturday. Am kind of leaning toward the GFS at this time but
basically split the difference for temperatures and pops for
Thursday and beyond. 43
marine...

a marine dense fog advisory remains in effect through 10 am for
galveston and matagorda bay, and through noon for the nearshore
waters. A cold front will pass through the gulf waters by early this
afternoon which should eliminate fog and improve visibilities as a
drier airmass ushers in. Showers and isolated thunderstorms will be
possible with this frontal passage. Behind the front moderate
west northwesterly winds will fill in for the remainder of the day.

Expect to see moderate to strong wind speeds by early Sunday morning
as a second shot of colder drier air pushes into the region. Winds
will turn more north northeasterly behind this secondary boundary
and scec conditions will likely be needed for the near and offshore
gulf waters.

High pressure builds into the region by Sunday midday, and wind
speeds should lower by Sunday evening. Moderate easterly winds will
prevail by Monday morning, setting up a lengthy fetch across the
northern gulf of mexico. This long easterly fetch looks to continue
through much of next week, and as a result, tide levels will likely
be on the rise as early as Monday. Latest model guidance indicates
forecast tide levels rising to near 2.0 ft above mllw, but would not
be surprised if we see tide levels approach closer to 3.0 feet by
mid week. Therefore, will have to watch for possible run-up issues
from mid-week on. Otherwise, unsettled weather should return to the
coastal waters by Tuesday.

Hathaway

Preliminary point temps pops
College station (cll) 71 43 64 41 64 70 0 0 0 0
houston (iah) 77 48 68 46 65 80 0 0 0 10
galveston (gls) 74 54 65 53 63 70 0 0 0 20

Hgx watches warnings advisories
Tx... Dense fog advisory until 10 am cst this morning for the
following zones: austin... Brazoria islands... Brazos...

burleson... Chambers... Coastal brazoria... Coastal
galveston... Coastal harris... Coastal jackson... Coastal
matagorda... Colorado... Fort bend... Galveston island and
bolivar peninsula... Grimes... Houston... Inland brazoria...

inland galveston... Inland harris... Inland jackson... Inland
matagorda... Madison... Matagorda islands... Montgomery...

northern liberty... Polk... San jacinto... Southern liberty...

trinity... Walker... Waller... Washington... Wharton.

Gm... Dense fog advisory until 10 am cst this morning for the
following zones: galveston bay... Matagorda bay.

Dense fog advisory 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.

Discussion... 43
aviation marine... 08


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 5 mi38 min SSW 4.1 G 8 71°F 65°F1010.4 hPa
MGPT2 - 8770613 - Morgans Point, TX 20 mi38 min S 1.9 G 2.9 65°F 59°F1011.2 hPa
EPTT2 - 8771013 - Eagle Point, TX 29 mi38 min S 11 G 15 67°F 60°F1011.3 hPa
GRRT2 38 mi38 min SSE 12 G 16 67°F 61°F1011.2 hPa
GTOT2 41 mi38 min S 8 G 18 69°F 58°F1010.9 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 42 mi38 min SSE 14 G 16 66°F 60°F1011 hPa
LUIT2 46 mi38 min SSE 8 G 11 66°F 59°F1010.9 hPa
RLOT2 - 8770971 - Rollover Pass, TX 47 mi38 min S 12 G 14 66°F 60°F1011.4 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John Dunn Helistop, TX2 mi37 minVar 3 G 101.25 miFog/Mist72°F71°F100%1011.2 hPa
Houston, Houston Hobby Airport, TX6 mi39 minS 85.00 miLight Rain Fog/Mist72°F70°F94%1011.5 hPa
Houston / Ellington, TX12 mi1.7 hrsSSE 125.00 miFog/Mist72°F69°F94%1011.5 hPa
Houston, Pearland Regional Airport, TX15 mi39 minS 114.00 miFog/Mist72°F72°F100%1011.7 hPa
Houston Southwest Airport, TX16 mi37 minSSW 55.00 miRain71°F70°F97%1011.8 hPa
Houston, Sugar Land Municipal / Hull Field Airport, TX17 mi39 minSSW 76.00 miFog/Mist74°F71°F91%1011.1 hPa
Houston Intercontinental Airport, TX17 mi39 minS 75.00 miFog/Mist74°F72°F94%1010.7 hPa

Wind History from MCJ (wind in knots)
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Last 24hrNE4NE63NE5CalmCalmCalmCalmCalmCalm3CalmCalm34Calm33
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Tide / Current Tables for Lynchburg Landing, San Jacinto River, Texas
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Lynchburg Landing
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Sat -- 06:27 AM CST     0.38 feet Low Tide
Sat -- 06:52 AM CST     Sunrise
Sat -- 09:50 AM CST     Moonset
Sat -- 12:49 PM CST     1.05 feet High Tide
Sat -- 06:15 PM CST     Sunset
Sat -- 06:30 PM CST     0.72 feet Low Tide
Sat -- 10:54 PM CST     Moonrise
Sat -- 11:46 PM CST     1.12 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.110.90.80.60.50.40.40.50.60.80.91110.90.90.80.70.70.80.911.1

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Sat -- 12:55 AM CST     0.38 feet High Tide
Sat -- 06:52 AM CST     Sunrise
Sat -- 07:19 AM CST     -0.15 feet Low Tide
Sat -- 09:50 AM CST     Moonset
Sat -- 01:24 PM CST     0.40 feet High Tide
Sat -- 06:15 PM CST     Sunset
Sat -- 07:43 PM CST     -0.04 feet Low Tide
Sat -- 10:54 PM CST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.40.30.20.1-0-0.1-0.1-0.1-0.10.10.20.30.40.40.30.20.10-0-000.10.2

Weather Map and Satellite Images
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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 (9,2,3,4)
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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.