Monday, May20, 2019 L-36.com


Marine Weather and Tides
Jamaica Beach, 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 6:23AMSunset 8:08PM Monday May 20, 2019 10:04 AM CDT (15:04 UTC) Moonrise 9:07PMMoonset 6:55AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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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GMZ355 Coastal Waters From High Island To Freeport Tx Out 20 Nm- 335 Am Cdt Mon May 20 2019
.small craft should exercise caution through this afternoon...
.small craft advisory in effect this evening...
.gale watch in effect in effect midnight Tuesday through early Tuesday morning...
.small craft advisory in effect from Tuesday morning through Thursday morning...
Today..Southeast winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Seas 3 to 5 feet.
Tonight..Southeast winds 20 to 25 knots. Seas 5 to 7 feet with occasional seas up to 8 feet.
Tuesday..South winds 20 to 25 knots decreasing to 15 to 20 knots in the afternoon. Seas 5 to 7 feet with occasional seas up to 8 feet. A slight chance of showers and Thunderstorms in the afternoon.
Tuesday night..South winds 15 to 20 knots. Seas 3 to 5 feet.
Wednesday..Southeast winds 15 to 20 knots. Seas 3 to 5 feet.
Wednesday night..Southeast winds 15 to 20 knots increasing to 20 to 25 knots after midnight. Seas 4 to 6 feet with occasional seas up to 7 feet.
Thursday..Southeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 7 feet.
Thursday night..Southeast winds 15 to 20 knots. Seas 3 to 5 feet.
Friday..Southeast winds 15 to 20 knots. Seas 3 to 5 feet.
Friday night..Southeast winds 10 to 15 knots. Seas 2 to 4 feet.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 335 Am Cdt Mon May 20 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Moderate to strong onshore winds over the several days will build seas and introduce coastal flooding.


7 Day Forecast for Marine Location Near Jamaica Beach, TX
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location: 29.2, -94.99     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 201128
afdhgx
area forecast discussion
national weather service houston galveston tx
628 am cdt Mon may 20 2019

Aviation
A smattering of MVFR decks with many hubs coming into sunrise
withVFR few-sct ceilings. All hubs will beVFR by 10 or 11 am
cdt with a strong gusty southerly wind this afternoon. This strong
lower level uni-directional southeast flow will remain amped up
through Tuesday morning. This will allow for the redevelopment of
a MVFR stratus deck and ultimately be a fog inhibitor. 31

Prev discussion issued 347 am cdt Mon may 20 2019
discussion...

southeast texas is seeing a warm and muggy start to the work week with
3 am temperatures in the upper 70s to around 80 across much of the area.

Some of these values are close to record high minimum values (see climate
section below for some more details). A tightening pressure gradient
between high pressure off to our east and deepening low pressure in
the southeast colorado area will bring increasingly breezy gusty winds
to much of our area today and tonight. Wind advisories might be needed.

Today's southern central plains storm system (see spc's day 1 convective
outlook and public severe weather outlook and also wpc's excessive rainfall
outlook for details on expected severe thunderstorm tornado outbreak
and heavy rainfall event) will help to drag a front into our area on
Tuesday. Most southeast texas locations will stay dry until the front's
arrival tomorrow, and expect to see best chance of rain storms across
our northern counties with this system. This front will also weaken
the pressure gradient resulting in a lowering of winds (especially well
inland) as we head on into Tuesday afternoon. Some lingering rains are
possible Tuesday night across some of our north and northeast counties,
and expect this to be the area's last best chance of rain for the remainder
of the week and the upcoming weekend as high pressure begins to dominate
the region. It will become occasionally breezy again from the middle
to around the end of the week when surface high pressure builds into
the area from the east. Aloft, mid upper level ridging also works its
way westward toward the state and helps to bring a rise in high temperatures
along with near zero rain chances. Our primary weather hazard will be
the heat, and precautions should be taken (especially remembering to
never leaving children or pets unattended in vehicles) even though heat
advisories are not anticipated expected. 42
marine...

lowering northern mexico and big bend region pressure through the
day will re-tighten the regional onshore pressure gradient enough to
produce moderate to strong southeasterlies through a good majority
of the week. The strongest winds will occur over the next 48 hours
with sustained winds in the 20-25 knot range tomorrow night into
early Tuesday morning. Frequent gusts to gale force during this
period has prompted a gale watch for all of the gulf waters. These
strong winds will allow seas to build to a peak Tuesday morning...

average 6 to 8 feet nearshore to near 10 or 11 feet offshore sea
heights with longer periods of 8 or 9 seconds.

Coastal water levels will remain high and, with an early week return
to a strengthened long duration onshore fetch, periodic coastal
flooding will become a concern. 3.5 to 4.0 feet water levels above
mllw will likely occur during Monday through Thursday's high tides.

These levels will put water along the low lying streets of the west
end of galveston island and may impact the ferry service between
galveston island and the west end of the bolivar peninsula. Levels
near 4 feet will also push galveston bay water onto such eastern
harris county roads as toddville road in seabrook, and lower
sections of red bluff road between bay area blvd and highway 146. At
4.0 feet above mllw, roads along the west shore of chambers county
will also be impacted. Beaches from san luis to surfside can expect
significant wave run up with sections of beach drive and the blue
water highway going under water during high tide times. Swimming
conditions will also remain dangerous as rip currents stay strong.

31
climate...

some record high minimum temperatures were set again yesterday.

-cll's low of 77 degrees tied the record set in 1960
-iah's low of 78 degrees tied the record set in 2017
-hou's low of 79 degrees set a new record (previous was 78 in 2017)
-gls's low of 79 degrees was one degree off the record (80 in 2017)
the area could be dealing with near record high minimum temperatures
for the next several days. Here are the records for today and Tuesday.

Cll - for today, 76 degrees (1990) and for Tuesday, 76 degrees (1990)
iah - for today, 79 degrees (2011) and for Tuesday, 77 degrees (2013)
hou - for today, 79 degrees (2011) and for Tuesday, 77 degrees (2011)
gls - for today, 80 degrees (2017) and for Tuesday, 79 degrees (1990)
42

Preliminary point temps pops
College station (cll) 91 75 84 74 92 10 10 50 20 10
houston (iah) 90 77 89 77 90 10 0 30 10 10
galveston (gls) 85 78 84 79 85 10 10 20 10 10

Hgx watches warnings advisories
Tx... Coastal flood advisory until 1 pm cdt Thursday for the following
zones: brazoria islands... Galveston island and bolivar
peninsula... Matagorda islands.

Gm... Small craft advisory from 7 pm this evening to 1 pm cdt Thursday
for the following zones: matagorda bay.

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.

Small craft advisory from 7 pm this evening to 7 pm cdt Tuesday
for the following zones: galveston bay.

Small craft should exercise caution from Tuesday evening through
Thursday afternoon for the following zones: galveston bay.

Gale watch late tonight 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...

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.

Small craft advisory from 7 pm this evening to midnight cdt
tonight 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... 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.

Small craft advisory from 6 am Tuesday to 1 pm cdt Thursday 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... 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.

Discussion... 42
aviation marine... 31


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GRRT2 9 mi35 min S 14 G 18 79°F 82°F1012.2 hPa
LUIT2 11 mi35 min SE 11 G 19 81°F 81°F1012.8 hPa
GTOT2 13 mi35 min SSE 7 G 13 80°F 80°F1012.8 hPa
42043 - GA-252 TABS B 16 mi125 min SE 14 G 16 79°F1012.2 hPa (+0.9)
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 18 mi41 min SSE 18 G 21 83°F 80°F1012.1 hPa
EPTT2 - 8771013 - Eagle Point, TX 20 mi41 min S 17 G 20 80°F 81°F1012.2 hPa
FCGT2 - 8772447 - USCG Freeport, TX 24 mi41 min SE 16 G 19 80°F 81°F1013.1 hPa
FPST2 24 mi35 min SE 17 G 21 79°F 81°F1012.2 hPa
KXIH 25 mi30 min SE 17 81°F 75°F
42035 - GALVESTON 22NM East of Galveston, TX 31 mi35 min SE 16 G 19 79°F 79°F1014 hPa79°F
MGPT2 - 8770613 - Morgans Point, TX 33 mi35 min SE 8 G 15 81°F 79°F1013 hPa
RLOT2 - 8770971 - Rollover Pass, TX 33 mi35 min SSE 16 G 19 80°F 80°F1013.4 hPa
NCHT2 - 8770777 - Manchester, TX 39 mi35 min SSE 7 G 15 82°F 79°F1011.9 hPa
HIST2 42 mi41 min SSE 8 G 14 81°F 80°F1013 hPa
SGNT2 45 mi35 min SE 16 G 21 80°F 82°F1011.6 hPa

Wind History for Galveston Pleasure Pier, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galveston, Scholes Field, TX8 mi73 minSE 158.00 miOvercast80°F75°F87%1012.9 hPa

Wind History from GLS (wind in knots)
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Tide / Current Tables for Jamaica Beach, West Bay, 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
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Mon -- 02:53 AM CDT     0.00 knots Slack
Mon -- 06:24 AM CDT     Sunrise
Mon -- 06:27 AM CDT     2.40 knots Max Flood
Mon -- 07:54 AM CDT     Moonset
Mon -- 01:14 PM CDT     -0.00 knots Slack
Mon -- 08:07 PM CDT     Sunset
Mon -- 10:05 PM CDT     Moonrise
Mon -- 10:53 PM CDT     -2.31 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2-1.5-0.80.11.11.92.42.321.510.70.40.1-0.2-0.4-0.5-0.5-0.7-1-1.4-1.9-2.2-2.3

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
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.