Monday, May20, 2019 L-36.com


Marine Weather and Tides
Kemah, 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 8:10PM Monday May 20, 2019 2:04 AM CDT (07:04 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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GMZ335 Galveston Bay- 926 Pm Cdt Sun May 19 2019
Rest of tonight..Southeast winds around 10 knots. Bay waters smooth to slightly choppy.
Monday..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Monday night..Southeast winds 15 to 20 knots increasing to 20 to 25 knots after midnight. Bay waters choppy becoming rough after midnight.
Tuesday..South winds 15 to 20 knots. Bay waters choppy. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Tuesday night..South winds 15 to 20 knots. Bay waters choppy.
Wednesday..Southeast winds around 15 knots. Bay waters slightly choppy to choppy.
Wednesday night..Southeast winds 15 to 20 knots. Bay waters choppy.
Thursday..Southeast winds 15 to 20 knots. Bay waters choppy.
Thursday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Friday..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Friday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 926 Pm Cdt Sun May 19 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Light to moderate onshore winds will prevail tonight. As low pressure develops and deepens over western texas, the gradient will significantly tighten once again. A strong onshore flow is expected Monday night into Tuesday.


7 Day Forecast for Marine Location Near Kemah, TX
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location: 29.55, -94.97     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 200441
afdhgx
area forecast discussion
national weather service houston galveston tx
1141 pm cdt Sun may 19 2019

Aviation
Low level moisture will continue to stream into the area on se
winds and am expecting mainly MVFR ceilings to develop between
05-08z. Winds look too strong for fog development so will lean
toward ceilings tonight. Lav guidance is hinting at some ifr
ceilings around sunrise before drier air mixes toward the surface.

Ceilings should erode quickly andVFR conditions should return
between 14-16z. It'll be windy on Monday and Monday night and
will carry a gust group from about 16z onward. MVFR ceilings are
expected to redevelop between 00-03z Tuesday. 43

Prev discussion issued 938 pm cdt Sun may 19 2019
update...

third update of the evening sent... Storms that initiated around
spring drifted north and interacted with storms backbuilding out
of sabine angelina. Given the warmth and heat today will still be
looking at an hour or two more before the storms wane and develop
west and northeast out of the area. Greatest rain chances
remainder of the evening along and north of a college station to
livingston line. Rain cooled air with the storms will likely play
havoc with temperatures overnight and for that matter help with
the development of patchy fog after 3 am.

Tomorrow will get breezy over the western 1 3 of the area with
gusts of 20-30 knots being common. Still plenty warm with 588
heights building into the southern counties and a strong LLJ from
bro-okc by 18z.

45
prev discussion... Issued 345 pm cdt Sun may 19 2019
discussion...

as of 3 pm, observations show our temperatures area wide in the
upper 80s to low 90s area wide and dewpoints remain rather moist in
the mid 70s. Some high clouds can be seen via visible satellite
imagery streaming in west of i-45 this afternoon, associated with
the remnants of an MCS located over south tx. Most of the light
showers that we saw over the far western portions of the area this
morning have now dissipated. In general, most of the short term
guidance has been rather overdone today, but general consensus
showed development dissipating with the loss of daytime heating,
so not anticipating we will see much else this afternoon.

The forecast looks rather dry in terms of precipitation through much
of Monday through Tuesday late morning. Our next storm system
looks to eject out of the four corners region by Tuesday morning,
and push off to the northeast through most of the day Tuesday.

This upper level disturbance will provide our next best chance for
showers and thunderstorms Tuesday afternoon into Wednesday
evening, with the best coverage north of a line from college
station to crockett. The best energy looks to once again remain
well to the north of SE tx. Taking a look at the theta-e fields,
the frontal boundary associated with this system looks to stall
out just to the northwest of our forecast area, and as a result,
se tx remains under a warm moist airmass Tuesday into Wednesday,
with the drier and cooler air remaining north of the region. That
being said, the storm prediction center is still carrying a
marginal risk for severe storms Tuesday into Wednesday morning
along and north of i-10, with the primary weather hazard being
damaging winds. Overall, rainfall totals associated with this
event look to be less than a half inch situated north of i-10.

An upper level ridge begins to build in over eastern seaboard by
Wednesday morning, before slowly shifting westward through much
of the second half of the week. SE tx will be mostly under control
of this strong area of high pressure, with the occasional
disturbance propagating around the western extent of the ridge.

Given the forecasted placement of this feature, and trends in the
model guidance, went ahead and raised temperatures in the extended
a touch or two. Forecasted high temperatures will be in the upper
80s to low 90s, with forecasted low temperatures only to cool
into the mid 70s. Therefore, throughout most of the next week, the
primary weather hazard to message will be heat, and the practice
of heat safety. Although as of now we are anticipating apparent
temperatures to remain below heat advisory criteria, this does not
mean that impacts will not be felt. As the temperatures rise as we
move into the summer season, our bodies will also need to
recalibrate and adjust to the warmth, especially after a rather
cool spring season. If working outside, make sure to drink plenty
of water and take frequent breaks if needed, apply sunscreen
regularly, and dress in light weight and light-colored clothing.

And of course, remember to check the back seat, and look before
you lock... Never leave kids or pets unattended in vehicles.

Hathaway
marine...

light moderate onshore winds tonight are expected to increase tomor-
row as the pressure gradient tightens in response to the next storm
system moving across the central plains. Winds are forecast to stay
fairly elevated through the week with sea responding accordingly as
the long fetch persists. Periods of caution advisory flags are also
expected the next several days especially for the coastal waters...

with one likely by Mon night for winds seas.

Along the coast... Tide water levels should remain high with the re-
turn of the strengthened long duration onshore fetch. Coastal flood
issues could become a concern with high tides from 3.5-4.0 ft above
mllw from Mon through thurs. These levels will cause water to reach
into the dunes and come across low lying sections of the blue water
highway in brazoria county and highway 87 along bolivar, especially
east of caplen and rollover pass. Swimming conditions will remain
more dangerous as rip currents stay strong this coming week. 41

Preliminary point temps pops
College station (cll) 75 91 75 84 74 30 0 10 50 20
houston (iah) 76 90 77 89 77 0 0 10 30 10
galveston (gls) 78 85 78 84 79 10 10 10 20 10

Hgx watches warnings advisories
Tx... Coastal flood advisory until 7 pm cdt Tuesday for the following
zones: brazoria islands... Galveston island and bolivar
peninsula... Matagorda islands.

Gm... None.

Discussion... 45
aviation marine... 43


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EPTT2 - 8771013 - Eagle Point, TX 6 mi41 min S 15 G 19 80°F 82°F1011.4 hPa
MGPT2 - 8770613 - Morgans Point, TX 9 mi41 min SSE 8.9 G 14 80°F 80°F1012.1 hPa
GRRT2 18 mi41 min S 11 G 14 79°F 83°F1011.3 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 19 mi41 min S 16 G 20 83°F 80°F1011 hPa
GTOT2 19 mi41 min S 7 G 13 79°F 81°F1011.9 hPa
NCHT2 - 8770777 - Manchester, TX 20 mi41 min S 6 G 11 80°F 80°F1011.5 hPa
RLOT2 - 8770971 - Rollover Pass, TX 24 mi41 min S 11 G 14 79°F 81°F1012.2 hPa
HIST2 31 mi41 min SSE 7 G 9.9 79°F 81°F1011.9 hPa
LUIT2 34 mi35 min SSE 11 G 15 79°F 82°F1012 hPa
KXIH 35 mi30 min SSE 18 G 24 79°F 77°F
42035 - GALVESTON 22NM East of Galveston, TX 37 mi35 min SSE 18 G 23 79°F 78°F1012.6 hPa
42043 - GA-252 TABS B 39 mi125 min SE 12 G 14 80°F1012.3 hPa (+0.7)
FCGT2 - 8772447 - USCG Freeport, TX 45 mi41 min SE 14 G 18 80°F 82°F1012.5 hPa
FPST2 46 mi35 min SE 16 G 18 79°F 82°F1011.6 hPa

Wind History for Eagle Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX12 mi75 minSSE 97.00 miMostly Cloudy81°F75°F84%0 hPa
Houston, Pearland Regional Airport, TX15 mi72 minSSE 68.00 miOvercast80°F75°F87%1012.7 hPa
Houston, Houston Hobby Airport, TX18 mi72 minSSE 108.00 miMostly Cloudy80°F75°F85%1012.4 hPa
Galveston, Scholes Field, TX20 mi73 minSSE 137.00 miOvercast79°F75°F90%1012.5 hPa

Wind History from EFD (wind in knots)
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Last 24hr--S6--S4SE8S10S10S11S8SE7S10SE10S10S9--SE10SE10SE9SE8E8SE8SE6S9S10
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2 days agoCalmCalmCalmE3SE5SE5SE10SE10SE11SE11SE13SE12SE12SE12
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Tide / Current Tables for Clear Lake, Harris Co. Park, Texas (2)
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Clear Lake
Click for Map
Mon -- 06:04 AM CDT     -0.19 feet Low Tide
Mon -- 06:25 AM CDT     Sunrise
Mon -- 07:55 AM CDT     Moonset
Mon -- 01:49 PM CDT     1.07 feet High Tide
Mon -- 08:08 PM CDT     Sunset
Mon -- 08:48 PM CDT     0.85 feet Low Tide
Mon -- 09:08 PM CDT     0.85 feet High Tide
Mon -- 10:07 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.50.40.2-0-0.1-0.2-0.1-00.20.50.70.911.1110.90.90.90.90.90.80.8

Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
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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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 (3,6,7,8)
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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.