Monday, January20, 2020
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Marine Weather and Tides
Palacios, TX

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
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.

Sunrise 7:16AMSunset 5:53PM Monday January 20, 2020 6:07 AM CST (12:07 UTC) Moonrise 3:30AMMoonset 2:24PM Illumination 22% Phase: Waning Crescent; Moon at 25 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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GMZ330 Matagorda Bay-galveston Bay- 350 Am Cst Mon Jan 20 2020
.small craft should exercise caution...
Today..Northeast winds 15 to 20 knots decreasing to around 10 knots in the afternoon. Bay waters choppy becoming smooth to slightly choppy in the afternoon.
Tonight..Northeast winds 5 to 10 knots increasing to 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight.
Tuesday..East winds 10 to 15 knots. Bay waters slightly choppy.
Tuesday night..East winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Bay waters slightly choppy becoming choppy after midnight. A chance of showers in the late evening and overnight.
Wednesday..Southeast winds 15 to 20 knots. Bay waters choppy. Showers. Isolated Thunderstorms late in the afternoon.
Wednesday night..Southeast winds 15 to 20 knots becoming south 10 to 15 knots after midnight. Bay waters choppy becoming slightly choppy after midnight. Showers and isolated Thunderstorms.
Thursday..West winds 5 to 10 knots becoming northwest in the afternoon. Bay waters smooth. Showers likely in the morning. Isolated Thunderstorms. A chance of showers in the afternoon.
Thursday night..North winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the evening.
Friday..North winds 10 to 15 knots. Bay waters slightly choppy.
Friday night..North 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 350 Am Cst Mon Jan 20 2020
Synopsis for high island to matagorda ship channel out 60 nm.. Northeasterly winds will slightly weaken through the day but once again restrengthen tomorrow as the western gulf pressure gradient tightens between eastern u.s. High pressure and lower pressure over mexico. This moderate to strong east to southeast fetch will last through mid week and will push waters levels up to above 3 feet during Wednesdays high tide. This will cause minor coastal flooding. The passage of a disturbance on Wednesday will increase mid week shower and Thunderstorm chances. Winds will come around to the northwest late Thursday with a cold frontal passage.


7 Day Forecast for Marine Location Near Palacios, TX
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location: 28.69, -96.39     debug


Area Discussion for - Houston/Galveston, TX
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FXUS64 KHGX 201143 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 543 AM CST Mon Jan 20 2020

AVIATION. VFR. A weak northeast veering east wind with periods of high cloudiness through the period. 31

PREV DISCUSSION. /ISSUED 435 AM CST Mon Jan 20 2020/

SHORT TERM (Today through Tomorrow) .

Central Plains-centered surface high pressure has descended into east state and weakened the post-frontal offshore pressure gradient. A mostly sunny holiday with cirrus streaming in from the west will counter the continued cold air moving in on weak northeast winds. Thus, the day will once again only warm to around 60 F. The air mass remains unchanged with a mainly clear overnight sky and near calm winds producing another cold early Tuesday morning. Tuesday morning minimum temperatures will be in the northern county lower to middle 30s, southern county upper 40s with the coldest inland spots briefly falling to or below freezing a few hours on either side of sunrise. Easterly winds slowly come around to onshore through Tuesday but in not enough time to bring in lower level moisture to assist in warming the day. Thus, with little change in this cold, dry air mass, Tuesday's conditions will be very similar to today's. Increasing and thickening high to mid level cloud cover as the afternoon will only warm into the upper 50s to lower 60s. 31

LONG TERM (Wednesday Through Monday) .

Our next storm system will be bringing rain (and maybe some isolated thunderstorms) to the area early in this period. Beginning Tuesday night through early Wednesday morning, expect to see increasing cloud cover with rising shower coverage generally from west to east. Rain chances (showers and possible isolated thunderstorms) really ramp up during the day on Wednesday with a strengthening and convergent flow off the Gulf. Will keep the rain chances high heading into Wednesday night, but latest model trends point toward decreasing coverage from west to east beginning somewhere in the midnight to 6 AM time period. Will show significantly decreasing rain chances as the day progresses on Thursday (again from west to east), but for this event some spots could end up seeing some decent rainfall totals (possible >2 inches) mainly south of the I-10 corridor and especially near/along the coast). High pressure building into the area behind this storm system will keep the area dry Friday and Saturday, and a majority of Southeast Texas looks to stay dry on Sunday and Monday.

After a very cool Tuesday night, temperatures will begin to warm up a little for the rainy Wednesday but highs should stay mostly in the 50s to around 60. Readings should not cool down too much on Wednesday night (40s north . 50s central and south) as the storm system works its way across the area. Lows in the 30s/40s and highs in the 50s/60s will be the general range the area sees Thursday through Sunday. 42

MARINE .

North to northeasterly winds have weakened as seas haven fallen and bay conditions have become less rough. An easterly fetch will develop and strengthen through mid week. East to southeast winds generated by a tightened east-to-west gradient will push water onto east-facing shorelines and create mid week minor coastal flooding issues. Water levels reaching and slightly exceeding 3.5 feet should produce some coastal dune and low area wash up flooding during Wednesday's high tides. The passage of a mid week disturbance will generate Wednesday and Thursday showers and thunderstorms. A cold frontal passage on Thursday will swing light moderate winds around to the north going into next weekend. High pressure building down over the waters Friday will ensure and dry conditions with light winds gradually veering around from north Friday to onshore by Monday midnight. 31

PRELIMINARY POINT TEMPS/POPS. College Station (CLL) 60 33 58 40 55 / 0 0 0 50 90 Houston (IAH) 61 36 59 41 57 / 0 0 0 30 90 Galveston (GLS) 58 43 56 49 62 / 0 0 0 20 90

HGX WATCHES/WARNINGS/ADVISORIES. TX . NONE. GM . SMALL CRAFT SHOULD EXERCISE CAUTION until noon CST today 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.

Small Craft Advisory until noon CST today for the following zones: 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 SHOULD EXERCISE CAUTION from noon CST today through this afternoon for the following zones: 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.



Short/Aviation/Marine . 31 Long . 42


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAT2 12 mi55 min NNE 12 G 14 49°F 57°F1033.5 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 17 mi55 min NNE 16 G 18 51°F 56°F1033 hPa
MBET2 19 mi55 min ENE 13 G 18 50°F 61°F1031.7 hPa
EMAT2 25 mi49 min NNW 7 G 8.9 40°F 55°F1032.8 hPa
SDRT2 - 8773037 - Seadrift, TX 26 mi55 min N 4.1 G 6 42°F 62°F1033.5 hPa
AWRT2 39 mi55 min NNE 12 G 17 51°F 60°F1032.7 hPa
SGNT2 41 mi49 min NNW 6 G 7
KBQX 48 mi32 min NNE 26 G 32 55°F 36°F

Wind History for Port OConnor, TX
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palacios Municipal Airport, TX8 mi74 minN 810.00 miFair0°F0°F%1033.3 hPa
Port Lavaca - Calhoun County Airport, TX16 mi2.3 hrsN 510.00 miFair44°F37°F79%1033.5 hPa

Link to 5 minute data for KPKV

Wind History from PKV (wind in knots)
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NE12NE7N6N7N6N7--NE7N7--N5
1 day agoCalmNW3CalmCalmCalmE3CalmCalmCalmW6NW4N14
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2 days agoE9E10E9E7E7E7E7E7SE9E10SE12SE12SE9SE10SE9SE8SE9SE10SE8SE9SE9SE6S6S5

Tide / Current Tables for Port Lavaca, Lavaca Causeway, Matagorda 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 Port Lavaca, Matagorda Bay, Texas
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Port Lavaca
Click for Map
Mon -- 03:31 AM CST     Moonrise
Mon -- 07:19 AM CST     Sunrise
Mon -- 11:04 AM CST     -0.61 feet Low Tide
Mon -- 02:25 PM CST     Moonset
Mon -- 05:55 PM CST     Sunset
Mon -- 10:20 PM CST     0.71 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.50.50.40.30.1-0-0.2-0.4-0.5-0.6-0.6-0.6-0.5-0.4-0.200.20.40.50.60.70.70.7

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 (7,2,3,4)
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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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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 numerous 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.