Thursday, September19, 2019 L-36.com


Marine Weather and Tides
Shoreacres, 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 7:05AMSunset 7:22PM Thursday September 19, 2019 1:43 PM CDT (18:43 UTC) Moonrise 9:53PMMoonset 10:49AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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- 1023 Am Cdt Thu Sep 19 2019
.small craft advisory in effect until 7 pm cdt this evening...
This afternoon..South winds 15 to 25 knots. Bay waters choppy. Showers and Thunderstorms likely. Some Thunderstorms may produce heavy rainfall.
Tonight..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of Thunderstorms in the evening. A chance of showers. A chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall in the evening.
Friday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. Showers and Thunderstorms likely in the morning, then a chance of showers and Thunderstorms in the afternoon.
Friday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Saturday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
Saturday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms after midnight.
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. A slight chance of showers and Thunderstorms after midnight.
Monday..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Monday night..Southeast 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 1023 Am Cdt Thu Sep 19 2019
Synopsis for high island to matagorda ship channel out 60 nm.. An area of low pressure over east texas will move slowly today. Moderate to strong onshore winds will persist through Friday and gradually relax over the weekend.


7 Day Forecast for Marine Location Near Shoreacres, TX
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location: 29.64, -94.99     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 191604
afdhgx
area forecast discussion
national weather service houston galveston tx
1104 am cdt Thu sep 19 2019

Short term [this afternoon]
Messy overnight weather shifting into messy morning and afternoon
weather for a good portion of the fa. Large band of thunderstorms
(mcs) that was draped over the central southeastern counties last
night early this morning has been slowly sinking S SE and filling
in from the west this morning (along the coast). Some of the near
term models are indicating that these trends will continue and we
could see additional rounds of rain over areas that got a hit yes-
terday (particularly galveston brazoria harris chambers counties).

Some incredible rainfall totals rates have been reported thus far
and, unfortunately, we're not really seeing signs of things taper-
ing off just yet. Main message is to stay put if you can and keep
up to date on the latest weather developments. 41

Aviation [18z issuance]
Will be keeping with the mention of tsra for the rest of this aft-
ernoon early evening... Likely improving things after 01z. Will be
hard-pressed to not include at least vcts for most sites tomorrow
afternoon. Overnight issues could include MVFR ifr cigs. 41

Prev discussion issued 502 am cdt Thu sep 19 2019
persistent band of storms initiating over parts of montgomery
county extending through liberty and parts of northeastern
chambers county toward beaumont have been producing extremely
heavy rainfall with rainfall rates of 3-5" hour amounts. Vwp
clearly showing the deep rich moisture transport into the cell
development... 25-49 knots of inflow! Dewpoints of 80 at galveston
and pw estimates 2.2-2.4" feeding these storms.

Flash flood emergency in effect in liberty chambers jefferson orange
counties already this morning and given the rates and previous
rainfall these will likely be extended and may need to be
expanded. Rainfall totals in liberty chambers county this morning
over the last 3 days is 6-10" with some of the hardest hit areas
having gotten more than 25"!
have expanded the flash flood watch to the west-northwest with the
expectation that storms should initiate and expand west and
northwest from the current storms possibly clipping the northern
portions of harris. The hrrr of late has been doing a good job
with the pattern though perhaps slightly shifted in location. Then
expecting the storms to expand further both south and north
through mid day well into the metro. Rainfall rates may start to
come down at least a bit this afternoon as inflow relaxes
somewhat.

Overnight storm threat shifting north tonight and may be focused
more in the college station to groveton corridor but mesoscale
features could and may well mess with that expectation. Tonight
the moisture transport relaxes as well... The one concern at this
point will likely be the slow storm motion.

Rain chances tapering down for a few days over the weekend but
then next big surge of moisture arrives Monday and some
indications of weak coastal troughing. Will be keeping an eye on a
wave coming in from the caribbean Monday and Tuesday probably
arriving in the central gulf Tuesday Wednesday. We certainly
wouldn't need this on the heels of imelda.

45

Preliminary point temps pops
College station (cll) 85 75 90 74 90 90 70 50 10 20
houston (iah) 82 77 87 76 89 100 50 70 10 30
galveston (gls) 85 81 86 81 86 60 40 60 10 20

Hgx watches warnings advisories
Tx... Flash flood watch until 7 pm cdt this evening for the following
zones: austin... Brazoria islands... Brazos... Burleson...

chambers... Coastal brazoria... Coastal galveston... Coastal
harris... Fort bend... Galveston island and bolivar
peninsula... Grimes... Inland brazoria... Inland galveston...

inland harris... Montgomery... Northern liberty... Polk... San
jacinto... Southern liberty... Trinity... Walker... Waller...

washington.

Gm... Small craft should exercise caution until 7 pm cdt this evening
for the following zones: coastal waters from freeport to
matagorda ship channel tx out 20 nm... Matagorda bay...

waters from freeport to matagorda ship channel tx from 20
to 60 nm.

Small craft advisory until 7 pm cdt this evening for the
following zones: coastal waters from high island to
freeport tx out 20 nm... Galveston bay... 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
MGPT2 - 8770613 - Morgans Point, TX 3 mi61 min ESE 19 G 21 75°F 83°F1013.6 hPa
EPTT2 - 8771013 - Eagle Point, TX 12 mi61 min ENE 8 G 13 75°F 81°F1013.1 hPa
NCHT2 - 8770777 - Manchester, TX 16 mi61 min ENE 8 G 11 73°F 80°F1012.7 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 24 mi67 min WNW 8 G 21 76°F 81°F1012.3 hPa
GRRT2 24 mi61 min W 13 G 19 75°F 79°F1012.3 hPa
GTOT2 25 mi61 min NW 7 G 9.9 74°F 81°F1013 hPa
RLOT2 - 8770971 - Rollover Pass, TX 27 mi55 min WNW 18 G 22 74°F 82°F1014.1 hPa
HIST2 32 mi67 min SSW 6 G 8 73°F 80°F1013.6 hPa
KXIH 40 mi28 min SE 16 82°F 79°F
LUIT2 40 mi55 min 82°F
42035 - GALVESTON 22NM East of Galveston, TX 42 mi43 min SE 9.7 G 14 85°F 1014.4 hPa (+0.7)81°F

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX10 mi2.9 hrsN 96.00 miThunderstorm Light Rain82°F77°F84%1013.2 hPa
Houston, Houston Hobby Airport, TX15 mi1.8 hrsNE 15 G 232.50 miThunderstorm Heavy Rain Fog/Mist75°F73°F94%1012.8 hPa
Houston, Pearland Regional Airport, TX16 mi1.8 hrsENE 810.00 miThunderstorm Light Rain77°F73°F88%1012.9 hPa
John Dunn Helistop, TX22 mi1.8 hrsNNW 5 G 100.25 miFog75°F75°F100%1012.9 hPa

Link to 5 minute data for KEFD

Wind History from EFD (wind in knots)
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Last 24hrS7S6S10--S4CalmSE4Calm--CalmCalm--S9----SW8SW6SW8S8S10SE6N9NE10
G19
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1 day agoE10NE15
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S16SE17SE10S10S7S10S10S7S6S7S7S9S8S9S7S10
2 days agoE9E8NE7E11E11E7NE7NE4NE4SE10NE4NE4NE4NE4CalmNE7NE6CalmE4--E5--E8E10

Tide / Current Tables for Barbours Cut, Morgans Point, Galveston Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Thu -- 01:59 AM CDT     -0.00 knots Slack
Thu -- 04:37 AM CDT     -0.25 knots Max Ebb
Thu -- 06:49 AM CDT     -0.21 knots Min Ebb
Thu -- 07:05 AM CDT     Sunrise
Thu -- 11:48 AM CDT     Moonset
Thu -- 01:35 PM CDT     -1.46 knots Max Ebb
Thu -- 05:52 PM CDT     0.00 knots Slack
Thu -- 07:19 PM CDT     Sunset
Thu -- 09:18 PM CDT     1.58 knots Max Flood
Thu -- 10:52 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.2-0-0.2-0.2-0.2-0.2-0.2-0.3-0.5-0.8-1.1-1.3-1.4-1.4-1.3-1-0.50.10.71.31.61.51.2

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (14,3,4,5)
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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.