Tuesday, April24, 2018 L-36.com


Marine Weather and Tides
Richmond, TX

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:44AMSunset 7:56PM Tuesday April 24, 2018 7:45 PM CDT (00:45 UTC) Moonrise 1:51PMMoonset 2:30AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 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- 349 Pm Cdt Tue Apr 24 2018
Rest of today..West winds 5 to 10 knots. Bay waters smooth.
Tonight..South winds around 5 knots becoming northwest after midnight. Bay waters smooth.
Wednesday..East winds around 5 knots becoming south in the afternoon. Bay waters smooth.
Wednesday night..Southwest winds around 10 knots becoming northwest after midnight. Bay waters smooth to slightly choppy becoming slightly choppy after midnight. A slight chance of showers in the evening, then a chance of showers and isolated Thunderstorms after midnight.
Thursday..North winds 10 to 15 knots becoming northwest 5 to 10 knots in the afternoon. Bay waters slightly choppy becoming smooth in the afternoon.
Thursday night..North winds 5 to 10 knots. Bay waters smooth.
Friday..North winds 10 to 15 knots. Bay waters slightly choppy.
Friday night..North winds around 10 knots. Bay waters smooth to slightly choppy.
Saturday..Northeast winds 5 to 10 knots becoming southeast in the afternoon. Bay waters smooth.
Saturday 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 349 Pm Cdt Tue Apr 24 2018
Synopsis for high island to matagorda ship channel out 60 nm.. Light winds and low seas should persist through Wednesday. A weak cold front will move off the coast Wednesday night. The offshore flow behind the front will persist through the end of the week as another cold front moves through the area on Friday. Onshore winds that are expected to return late Saturday or Saturday night should persist for the remainder of the weekend and then strengthen into the start of next week.

7 Day Forecast for Marine Location Near Richmond, TX
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location: 29.58, -95.75     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 242353
afdhgx
area forecast discussion
national weather service houston galveston tx
653 pm cdt Tue apr 24 2018

Aviation
A weak sea breeze south of sgr hou early this evening may result
in a brief southerly wind shift 5-8 knots as those terminals
before it washes out mid-evening. Otherwise, light and variable
winds are expected to become established at all terminals around
or before midnight tonight with patchy radiational fog resulting
in MVFR or possibly ifr conditions at cxo and lbx 09-14z. South to
southwest winds 5-8 knots are expected to become established mid
to late morning with a cold front ushering in a northerly wind
shift to cll and uts after 21z.

Huffman

Prev discussion issued 352 pm cdt Tue apr 24 2018
discussion...

cirrus streaming in from the west as temperatures have warmed
into the lower 80s this afternoon. Weak and variable breezes will
continue through the overnight hours as evening temperatures fall
into the lower to middle 70s... Interior lower 60s to coastal
middle 60s by sunrise. Early Wednesday patchy fog development will
be dependent upon the extent of the high cloud cover... Partial
clearing will increase the odds of pre-dawn patchy fog over rural
open expanse areas. Any fog will persist through around 8am or
9am.

Weather will undergo change beginning tomorrow afternoon as clouds
lower to overcast and far northern tier county rain probabilities
increase going into the early evening hours. A shortwave trough
now gathering itself over the northern great basin will be passing
out of the central rockies and into the southern plains by late
Wednesday afternoon. The eastward progression of this mid to upper
level trough towards the mississippi river valley will push a
surface cold front across southeast texas late Wednesday into
early Thursday. Frontogenesis ahead and along this lower level
boundary may give enough parcel lift to generate more organized
rain showers and scattered embedded thunderstorm activity. More
cons than pros with any significant Wednesday night and early
Thursday morning storm behavior. While steep enough lapse rates
exist... Moisture return will be limited (with onshore flow never
truly re-establishing itself) and lacking upper level dynamics
(with the jet core passing off across the arklatex). There will be
a brief window Wednesday evening where the northeastern CWA falls
under the exiting rrq. This may enhance evening thunderstorm
activity generally along and east of the i-45 corridor. Overall...

other than showers with some embedded storm cells... Not much to
report. Understand that even general thunderstorms can put down 30
to 40 knot wind gusts... Short lived intense rain rates and
smaller hail. Thus... All storm activity will and should be
monitored for quick enhancement.

High pressure builds in the wake of the early Thursday cold frontal
passage with an slight strengthening to the offshore flow Friday
as a (dry) reinforcing front passes through that morning. Mainly
clear skies and seasonable temperatures for a good part of the
weekend. Onshore flow and moisture returns Sunday as high pressure
shifts over the upper midwest states. This will allow for the thickening
and lowering of clouds Sunday into Monday. West coast troughing
will place texas under a more familiar southwesterly steering wind
pattern. Combine this early week mid-level (southwesterly) flow
pattern with a series of weak westerly disturbance passages and
you have the ingredients for periods of Monday and Tuesday precipitation.

31
marine...

light winds and low seas should persist will persist until a weak
cold front pushes off the coast Wednesday night. Offshore winds
behind the front might reach caution levels for a short period
Thursday morning. The offshore flow will persist through the end of
the week as another cold front moves through the area on Friday.

Onshore winds that are expected to return late Saturday or Saturday
night should persist for the remainder of the weekend and then
strengthen into the start of next week. 11

Preliminary point temps pops
College station (cll) 60 82 54 76 54 0 10 40 10 10
houston (iah) 62 84 59 78 56 0 10 40 10 10
galveston (gls) 67 80 64 76 64 0 10 40 10 10

Hgx watches warnings advisories
Tx... None.

Gm... None.

Discussion... 45


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 28 mi45 min N 1.9 G 4.1 83°F 72°F1014.3 hPa (-1.2)
MGPT2 - 8770613 - Morgans Point, TX 41 mi45 min SSW 5.1 G 6 79°F 74°F1015.2 hPa (-0.9)
EPTT2 - 8771013 - Eagle Point, TX 45 mi45 min SSE 4.1 G 5.1 76°F 76°F1015.1 hPa (-0.9)
LUIT2 48 mi45 min SSW 6 G 8.9 73°F 75°F1015.4 hPa (-1.1)
GRRT2 49 mi45 min SW 8 G 9.9 74°F 76°F1015.2 hPa (-1.0)
FCGT2 - 8772447 - USCG Freeport, TX 50 mi45 min SSE 7 G 8 73°F 74°F1016.2 hPa (-1.0)

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston, Sugar Land Municipal / Hull Field Airport, TX6 mi52 minN 510.00 miFair83°F60°F46%1015 hPa
Houston Southwest Airport, TX15 mi50 minN 310.00 miFair82°F57°F43%1015.2 hPa
Houston Executive Airport, TX17 mi50 minN 310.00 miFair82°F60°F48%1015.6 hPa
John Dunn Helistop, TX21 mi50 minNNW 510.00 miFair84°F53°F35%1014.9 hPa

Wind History from SGR (wind in knots)
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Last 24hrN6N4N3CalmCalmCalmSE3CalmCalmCalmCalmCalmCalmCalmCalmNE4N5N5N53CalmCalmNW5N5
1 day agoNW6N5N4N5N4NW3CalmCalmCalmW5W3NW6NW5NW6NW7NW8N12N114
G16
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2 days agoSE12SE15SE134N11CalmCalmW5NW9NW10
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Tide / Current Tables for Houston Ship Channel, Galveston Bay, Manchester, Texas
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Houston Ship Channel
Click for Map
Tue -- 01:36 AM CDT     1.53 feet Low Tide
Tue -- 02:38 AM CDT     1.53 feet High Tide
Tue -- 03:28 AM CDT     Moonset
Tue -- 06:45 AM CDT     Sunrise
Tue -- 11:36 AM CDT     0.57 feet Low Tide
Tue -- 02:48 PM CDT     Moonrise
Tue -- 07:27 PM CDT     1.97 feet High Tide
Tue -- 07:53 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.51.51.51.51.51.31.210.80.70.60.60.70.91.21.41.71.9221.91.81.6

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Tue -- 02:25 AM CDT     0.55 feet Low Tide
Tue -- 03:27 AM CDT     Moonset
Tue -- 04:44 AM CDT     0.58 feet High Tide
Tue -- 06:44 AM CDT     Sunrise
Tue -- 12:56 PM CDT     -0.11 feet Low Tide
Tue -- 02:48 PM CDT     Moonrise
Tue -- 07:52 PM CDT     Sunset
Tue -- 08:37 PM CDT     0.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.60.50.60.60.60.50.50.30.20.1-0-0.1-0.1-0.100.20.40.60.70.70.70.70.7

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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (20,4,5,8)
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Ground Weather Radar Station Houston/Galveston, TX
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weather_mapweather_map weather_map

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.