Saturday, September21, 2019 L-36.com


Marine Weather and Tides
El Lago, TX

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:07AMSunset 7:19PM Saturday September 21, 2019 10:02 AM CDT (15:02 UTC) Moonrise 11:26PMMoonset 12:46PM Illumination 50% Phase: Third Quarter Moon; Moon at 22 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- 340 Am Cdt Sat Sep 21 2019
.small craft should exercise caution...
Today..Southeast winds around 15 knots. Bay waters slightly choppy. A slight chance of showers early in the morning. A slight chance of showers and Thunderstorms late.
Tonight..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the late evening and overnight.
Sunday..Southeast winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers and Thunderstorms.
Sunday night..Southeast winds 5 to 10 knots. Bay waters smooth.
Monday..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms.
Monday night..Southeast winds 5 to 10 knots. Bay waters smooth.
Tuesday..Southeast winds 5 to 10 knots. Bay waters smooth.
Tuesday night..South winds 5 to 10 knots. Bay waters smooth.
Wednesday..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms.
Wednesday night..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms after midnight.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 340 Am Cdt Sat Sep 21 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate onshore winds will persist. Periods of scattered showers and Thunderstorms expected during the next few days.


7 Day Forecast for Marine Location Near El Lago, TX
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location: 29.56, -95.05     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 211123
afdhgx
area forecast discussion
national weather service houston galveston tx
623 am cdt Sat sep 21 2019

Aviation [12z TAF issuance]
MostlyVFR conditions this morning across the terminals besides
some patchy MVFR ceilings impacting the northern terminals such as
cxo, uts, and cll when high clouds are not overhead. Scattered
showers and isolated thunderstorms will be possible today
starting along the coast and pushing inland with daytime heating.

Most of the convection should dissipate by the early evening hours,
with onshore flow becoming light to moderate along the coast. Some
patchy fog looks possible across the region in the early morning
hours, and MVFR ceilings should fill in impacting sites such as
cxo and northward.

Hathaway

Prev discussion issued 423 am cdt Sat sep 21 2019
Short term [tonight through tonight]
Upper-level ridging is continuing to build in from the east
today, helping to dampen widespread chances for showers and
thunderstorms today. Precipitable waters have not dried out too
much just yet, with 1.9 to 2.1 inches remaining over the area, as
seen in the goes-16 total precipitable water imagery. In general,
coverage should be more isolated to scattered, with mostly showers
and isolated thunderstorms possible. Convection should wane with
the loss of daytime heating by the early evening hours. High
temperatures today should rise into the low to mid 90s area wide,
once again above seasonal normals for this time of year. Pockets
of patchy fog looks possible tonight, with low temperatures
bottoming out in the low 70s to 80s.

Hathaway

Long term [Sunday through Saturday]
An upper level ridge over the deep south will extend into texas on
Sunday. Moisture trapped beneath the ridge will allow for scattered
showers and thunderstorms through the day. Pw values remain near
1.90 inches and convective temperatures are only in the upper 80's.

850 mb temps support high temperatures in the lower 90's. Pw values
drop on Monday to around 1.70 inches but a weak inverted upper
trough sliding west beneath the ridge toward the middle coast will
bring another chance of showers and thunderstorms to the area on
Monday. High temperatures will again warm into the lower 90's. The
upper ridge retreats to the east as an upper low approaches the
southern rockies on Wednesday. 500 mb heights slowly fall and 850
temps also cool. Temperatures should cool a few degrees in response
to the lower heights. Pw values drop to around 1.30 inches so rain
chances should decrease. The upper low gets sheared out as it pivots
into the western high plains on Friday. This will allow the upper
ridge over the eastern us to expand and shift west. The flow aloft
between these two systems will become s-sw and this will allow a
weak disturbance to move into the area and bring another chance of
showers and thunderstorms late Thursday into Friday. Rain chances
will fall next weekend and temperatures will warm again as a 594 dm
upper level high settles over texas. Unseasonably warm temperatures
will return for next weekend and sept 2019 will probably end as one
of, if not the warmest september on record. 43

Marine
Moderate onshore flow will continue through the remainder of the
weekend before pressure gradient slackens over SE tx. Small craft
should continue to exercise caution over both bays and the gulf
waters. The risk for strong rip currents and elevated tides remain
possible through the weekend. Tide levels will peak near 3.0 feet
above mllw during times of high tide through the Sunday and
potentially even Monday before lowering beneath the 3.0 feet
mark. Onshore flow falls closer to 10 knots by Monday, with seas
lowering to near 3 to 4 feet. Light to moderate onshore flow will
continue through much of next week.

Hathaway

Hydrology
Good news for the most part. All area rivers have crested and are
now falling. San jac at sheldon is the only river forecast point
still in major flood but will to moderate this morning. Peach creek
is now below flood stage and other than cedar bayou, all harris
county bayous are within banks and falling. Area rivers are all
expected to fall within banks by Monday. 43

Preliminary point temps pops
College station (cll) 95 73 92 72 93 20 0 30 10 20
houston (iah) 91 75 92 75 91 20 20 30 10 30
galveston (gls) 90 80 91 81 90 20 30 40 20 20

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution through this evening 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... Galveston bay... Matagorda
bay... 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.

Aviation... 08


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EPTT2 - 8771013 - Eagle Point, TX 9 mi51 min SE 12 G 14 83°F 81°F1017.8 hPa
MGPT2 - 8770613 - Morgans Point, TX 9 mi51 min ESE 8.9 G 12 82°F 78°F1018.5 hPa
NCHT2 - 8770777 - Manchester, TX 16 mi51 min SSE 8 G 13 82°F 79°F1017.9 hPa
GRRT2 20 mi51 min SSE 9.9 G 14 83°F 80°F1017.8 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 22 mi51 min SE 13 G 16 83°F 81°F1017.4 hPa
GTOT2 22 mi51 min SE 11 G 14 84°F 82°F1018 hPa
RLOT2 - 8770971 - Rollover Pass, TX 29 mi45 min SE 12 G 14 83°F 82°F1018.8 hPa
LUIT2 34 mi45 min SE 9.9 G 16 81°F
HIST2 35 mi51 min SE 5.1 G 8.9 84°F 77°F1018.3 hPa
KXIH 38 mi28 min SE 15 84°F 73°F
42035 - GALVESTON 22NM East of Galveston, TX 41 mi33 min ESE 14 G 18 85°F 1019.5 hPa78°F
FPST2 45 mi51 min ESE 15 G 18 84°F 85°F1017.5 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX8 mi73 minSE 610.00 miA Few Clouds82°F73°F74%1018.3 hPa
Houston, Pearland Regional Airport, TX11 mi70 minESE 610.00 miPartly Cloudy84°F73°F72%1018.6 hPa
Houston, Houston Hobby Airport, TX14 mi70 minESE 810.00 miA Few Clouds83°F73°F74%1018.4 hPa
John Dunn Helistop, TX21 mi68 minN 09.00 miFair82°F73°F74%1018.3 hPa
Galveston, Scholes Field, TX22 mi71 minSE 1010.00 miA Few Clouds85°F75°F75%1018.1 hPa
Houston Southwest Airport, TX23 mi68 minSE 510.00 miFair81°F76°F86%1018.3 hPa

Link to 5 minute data for KEFD

Wind History from EFD (wind in knots)
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Last 24hrSE9E9E10S12E3E9SE10E10E6--E3----SE9SE7SE3CalmNE3E4E5E5E3E4SE6
1 day agoSE6N9--E3SE11SE9SE6SE6SE6SE3--CalmCalmSE4SE4SE5CalmCalmSE4SE3SE3CalmE3SE8
2 days agoS8S9S7S10S7S6S10--S4CalmSE4Calm--CalmCalm--S9----SW8SW6SW8S8S10

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Sat -- 07:08 AM CDT     Sunrise
Sat -- 10:06 AM CDT     0.86 feet High Tide
Sat -- 01:46 PM CDT     Moonset
Sat -- 07:18 PM CDT     Sunset
Sat -- 09:43 PM CDT     Last Quarter
Sat -- 10:18 PM CDT     0.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.40.50.70.80.80.80.80.80.90.90.90.80.80.80.80.70.60.40.30.20.10.10.1

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Sat -- 04:52 AM CDT     -0.00 knots Slack
Sat -- 07:06 AM CDT     Sunrise
Sat -- 01:44 PM CDT     Moonset
Sat -- 02:41 PM CDT     -1.64 knots Max Ebb
Sat -- 07:17 PM CDT     Sunset
Sat -- 07:25 PM CDT     0.00 knots Slack
Sat -- 09:43 PM CDT     Last Quarter
Sat -- 11:11 PM CDT     1.73 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.310.60.30.1-0-0.1-0.3-0.4-0.6-0.8-1-1.3-1.5-1.6-1.6-1.5-1.3-0.8-0.30.411.51.7

Weather Map
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wmap_A
GEOS 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.
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Wind Forecast for Houston/Galveston, TX (11,2,3,4)
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Ground Weather Radar Station Houston/Galveston, TX
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Gulf Stream Current


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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.