Monday, August19, 2019 L-36.com


Marine Weather and Tides
West University Place, TX

Version 3.4
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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 6:50AMSunset 7:59PM Monday August 19, 2019 4:08 PM CDT (21:08 UTC) Moonrise 9:37PMMoonset 9:19AM 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- 327 Pm Cdt Mon Aug 19 2019
Tonight..South winds around 10 knots becoming southwest after midnight. Bay waters smooth to slightly choppy becoming smooth after midnight. Chance of showers.
Tuesday..North winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A chance of showers and Thunderstorms.
Tuesday night..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers after midnight.
Wednesday..South winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A chance of showers and Thunderstorms.
Wednesday night..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers after midnight.
Thursday..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Thursday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Friday..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Friday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Saturday..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Saturday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 327 Pm Cdt Mon Aug 19 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate onshore flow subsides later tonight as high pressure builds into the region, resulting in lighter winds and lower seas over the next several days. With this typical summertime onshore flow pattern, the development of diurnally driven showers and Thunderstorms along with some brief gusty winds is possible in the morning hours although no major impacts are anticipated.


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 192015
afdhgx
area forecast discussion
national weather service houston galveston tx
315 pm cdt Mon aug 19 2019

Discussion
Today appears to be coming in just a touch cooler than yesterday,
and that is the beginning of a slow drawdown in heat that will
persist through the week. Don't get too excited, though - we'll
only be making our way to normal summertime heat from our more
dangerous heat last week. As conditions become more typical, we're
also seeing the return of daily scattered showers and storms,
mainly in the vicinity of the coast. Guidance continues to sour
on the disturbance slated to scrape up the western gulf this
weekend, and while it still looks like it should bring more
widespread rain chances, confidence is slowly growing that heavy
rains will not be in the cards.

Near term [through tonight]
Radar shows that a lot of our morning and early afternoon
convection has waned or moved off to the east, and there is less
activity out there now than earlier in the day. However, satellite
indicates a few more areas where cumulus clouds are beginning to
pile up, so we're almost certainly not quite done yet for the
afternoon. Of course, as we settle into the typical diurnal
routine, look for any showers or storms to wrap themselves up
pretty quickly as the Sun GOES down early this evening.

Short term [Tuesday through Thursday night]
The strong midlevel ridging that had been centered over texas
is not really weakening any, but it is drifting slowly westward.

As it does so, will be looking for small, but sustained drops in
high temperatures each day this week. Shower and storm activity
should manage to be similar today for the next couple of days, but
the best forcing aloft to support vertical growth of updrafts will
be offshore, so we may see convection over land suppressed
slightly. With the mesoscale driving so much already, any
difference may be only barely perceptible.

Long term [Friday through Monday]
By Friday, the midlevel vort MAX we've been referring to for a few
days now should be making its way into the northwestern gulf as it
comes up the western gulf coast. Both the euro and particularly
the GFS find a way to be even less enamored of this feature as it
moves into our region, and at this point there isn't even a
surface trough underneath the midlevel disturbance.

What we do still see, though, is a decidedly higher precipitable
water content make its way over southeast texas, so at least we
should see the increased moisture make for more widespread rain
chances, rather than seeing convective activity pinned to the
seabreeze zone. More widespread rains, however, will not
necessarily translate to heavier rain for us. A lot will depend on
specifics I will not pretend we can reliably forecast at this
range, but in general, as long as the strong model consensus for
the track of the midlevel vort MAX holds, it will be safely
offshore, and on the backside, we'll be looking for offshore flow
in the 700-500 mb layer. As a result, progged rainfall totals are
not terribly impressive inland, and MAX out around an inch or two
at the coast, even.

As noted in past days, we are still at range and plenty of
details could change to give us a different setup. But at this
point, the trend continues to be our friend - we're still looking
at better, more widespread rain, but nothing excessive expected.

Knocking on wood that it stays that way.

Aviation [18z TAF issuance]
Scattered shra tsra has developed south of i-10 this afternoon,
and is expected to continue to push northward over the next
several hours. Metro terminals can expect to see intermittent
precipitation through approximately 22z this afternoon. Aside
from the possibility of any temporarily reduced visibilities from
convection this afternoon, conditions should remain withinVFR
thresholds at all sites through the duration of the TAF period.

Winds through the rest of the day remain out of the S SE at around
10 knots. As high pressure builds into the region tonight and
into tomorrow, winds should become lighter and variable. Current
high-resolution model guidance suggests that showers and storms
will again develop over the coastal waters tomorrow morning,
although confidence in the extent to which this activity will push
inland is not high at this time.

Cady

Marine
Moderate onshore flow begins to taper off slightly tonight as high
pressure begins to build into the region. Winds remain out of the
south to southeast winds at 10 to 15 knots, diminishing to 5 to
10 knots overnight. Scattered showers and thunderstorms are
possible tomorrow, which could result in some higher gusts during
the afternoon. Winds begin to diminish to around 5 to 10 knots
late Monday as high pressure builds into the region, producing
lower seas through the end of the week.

Strong rip currents will be possible along gulf-facing beaches
overnight and into tomorrow morning. A rip current statement remains
in effect through 10am cdt Tuesday morning. If traveling to the
beach, always remember to exercise caution while swimming and only
enter the water in areas where lifeguards are on duty.

Cady

Preliminary point temps pops
College station (cll) 77 99 76 98 76 0 20 0 10 0
houston (iah) 79 95 78 95 78 10 40 0 20 10
galveston (gls) 83 90 83 90 83 40 60 10 30 20

Hgx watches warnings advisories
Tx... High rip current risk through Tuesday morning for the following
zones: brazoria islands... Galveston island and bolivar
peninsula... Matagorda islands.

Gm... None.

Near term... Luchs
short term... Luchs
long term... Luchs
aviation... Cady
marine... Cady


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 5 mi51 min E 7 G 9.9 88°F 89°F1014 hPa
MGPT2 - 8770613 - Morgans Point, TX 20 mi51 min S 11 G 15 91°F 89°F1014.6 hPa
EPTT2 - 8771013 - Eagle Point, TX 29 mi57 min S 14 G 17 89°F 89°F1014.2 hPa
GRRT2 38 mi51 min SW 12 G 15 88°F 90°F1014.6 hPa
GTOT2 41 mi51 min S 9.9 G 13 90°F 89°F1015 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 42 mi57 min SSW 13 G 16 87°F 89°F1014.3 hPa
LUIT2 46 mi51 min S 11 G 16 89°F 87°F1015 hPa
RLOT2 - 8770971 - Rollover Pass, TX 47 mi51 min SSW 6 G 11 89°F 90°F1015.4 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John Dunn Helistop, TX2 mi94 minVar 6 G 119.00 miFair97°F71°F44%1014.6 hPa
Houston, Houston Hobby Airport, TX6 mi2.3 hrsSSW 810.00 miPartly Cloudy94°F75°F54%1015.3 hPa
Houston / Ellington, TX12 mi2.3 hrsSE 710.00 miMostly Cloudy93°F77°F59%1014.9 hPa
Houston, Pearland Regional Airport, TX15 mi2.3 hrsSW 610.00 miA Few Clouds94°F72°F49%1015.3 hPa
Houston Southwest Airport, TX16 mi94 minN 010.00 miMostly Cloudy91°F76°F61%1014.9 hPa
Houston, Sugar Land Municipal / Hull Field Airport, TX17 mi2.3 hrsSSE 810.00 miFair93°F79°F64%1014.9 hPa
Houston Intercontinental Airport, TX17 mi2.3 hrsSSW 710.00 miPartly Cloudy97°F71°F43%1014.7 hPa

Link to 5 minute data for KMCJ

Wind History from MCJ (wind in knots)
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Tide / Current Tables for Lynchburg Landing, San Jacinto River, Texas
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Lynchburg Landing
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Mon -- 06:18 AM CDT     0.46 feet Low Tide
Mon -- 06:50 AM CDT     Sunrise
Mon -- 10:18 AM CDT     Moonset
Mon -- 12:50 PM CDT     1.04 feet High Tide
Mon -- 07:20 PM CDT     0.66 feet Low Tide
Mon -- 07:57 PM CDT     Sunset
Mon -- 10:35 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.90.80.70.60.50.50.50.50.70.80.91110.90.90.80.70.70.70.70.80.9

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Mon -- 12:34 AM CDT     0.60 feet High Tide
Mon -- 06:50 AM CDT     Sunrise
Mon -- 07:09 AM CDT     0.12 feet Low Tide
Mon -- 10:18 AM CDT     Moonset
Mon -- 01:58 PM CDT     0.64 feet High Tide
Mon -- 07:56 PM CDT     Sunset
Mon -- 08:09 PM CDT     0.34 feet Low Tide
Mon -- 10:35 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.60.50.40.30.20.10.10.10.20.30.40.50.60.60.60.50.50.40.40.30.30.40.4

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 (17,4,5,8)
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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.