Tuesday, August11, 2020
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Marine Weather and Tides
Lamar, 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 6:56AMSunset 8:12PM Tuesday August 11, 2020 8:03 PM CDT (01:03 UTC) Moonrise 12:00AMMoonset 12:53PM Illumination 44% Phase: Third Quarter Moon; Moon at 23 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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GMZ235 Bays And Waterways From Port Aransas To Port O'connor- 226 Pm Cdt Tue Aug 11 2020
Tonight..South wind 10 to 15 knots. Bays slightly choppy to occasionally choppy.
Wednesday..South wind 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. Bays slightly choppy to occasionally choppy.
Wednesday night..South wind 10 to 15 knots. Bays slightly choppy to occasionally choppy.
Thursday..South wind 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. Bays slightly choppy to occasionally choppy.
Thursday night..South wind 10 to 15 knots. Bays slightly choppy to occasionally choppy.
Friday..South wind 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Bays slightly choppy to occasionally choppy.
Friday night..South wind 10 to 15 knots. Bays slightly choppy to occasionally choppy.
Saturday..South wind 10 to 15 knots. Bays slightly choppy to occasionally choppy. A slight chance of showers and Thunderstorms.
Saturday night..South wind 10 to 15 knots. Bays slightly choppy to occasionally choppy.
Sunday..South wind 5 to 10 knots shifting southeast in the afternoon. Bays smooth. A slight chance of showers and Thunderstorms.
Sunday night..Southeast wind 5 to 10 knots shifting south after midnight. Bays smooth.
GMZ200 226 Pm Cdt Tue Aug 11 2020
Synopsis for the middle texas coastal waters.. Generally weak to moderate onshore flow will persist through the period. Brief moderate winds can be expected across the bays and nearshore waters south of port aransas each afternoon. Isolated showers and Thunderstorms will be possible at times through the work week. Rain chances will increase as we head into next weekend and early next week.


7 Day Forecast for Marine Location Near Lamar, TX
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location: 28.12, -97.02     debug


Area Discussion for - Corpus Christi, TX
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FXUS64 KCRP 112335 AFDCRP

Area Forecast Discussion National Weather Service Corpus Christi TX 635 PM CDT Tue Aug 11 2020

DISCUSSION.

Note Aviation Discussion below corresponding to the 00z TAFs.

AVIATION.

VFR conditions expected during the period, except for a mixture of MVFR and VFR ceilings/visibilities over the Coastal Plains during the 09-14z Wednesday period. Weak/moderate onshore flow this evening/early tonight, then becoming light/variable through early Wednesday, then transitioning to moderate/breezy onshore flow by late Wednesday afternoon. Significant precipitation is not expected during the period.

PREV DISCUSSION. /Issued 234 PM CDT Tue Aug 11 2020/

SHORT TERM (Tonight through Wednesday night) .

A quiet hot 36-hours is ahead for us with a surface high over to our east with ridging aloft dominating throughout the period. Rain chances diminished earlier this afternoon and will remain absent through the evening. Winds at 925mb are shown to take a more southwesterly orientation heading into tomorrow morning and will result in drier air aloft along with a stronger cap and weaker PWAT values. Therefore, have kept silent PoPs for the entire CWA for Wednesday and Wednesday night as conditions are more unfavorable than today. Temperatures are expected to be a couple degrees warmer Wednesday with SPS conditions likely as heat indices range from 105 to 109 degrees with isolated higher amounts possible. Close monitoring is needed for potential heat advisory conditions, especially over the Coastal Plains.

LONG TERM (Thursday through Tuesday) .

Not much deviation from the previous long-term forecast. The upper level ridge remains over the region through the end of the work week. With dry air aloft and lower than average PWAT values, rain chances will be very limited. The Victoria Crossroads area could see an isolated storm or two along the sea breeze.

Looking into the weekend and next week a trough digs south into the Ohio Valley, and will cause the ridge to shift slightly west. An inverted trough slides into the area from the south. Kept PoPs around 20-30 percent as the lack of moisture may limit precipitation at the beginning of the weekend. PWAT values begin to increase by the end of the weekend into next week. Rain chances look more probable by that point as an H5 shortwave approaches the region. The GFS and Euro both suggest a weak cold front early next week. With it being near the end of the period, we will see if the models hold onto this.

Hot and humid conditions persist through the extended period. Daily SPSs likely needed with heat indices ranging from 105-109 and a few locations briefly reaching values at or above 110 degrees.

MARINE .

Generally weak to moderate onshore flow will persist through the period. Brief moderate winds can be expected across the bays and nearshore waters south of Port Aransas each afternoon. Isolated showers and thunderstorms will be possible at times through the work week. Rain chances will increase as we head into next weekend and early next week.

PRELIMINARY POINT TEMPS/POPS. Corpus Christi 78 96 77 95 77 / 10 10 0 10 0 Victoria 78 98 77 97 76 / 0 10 0 10 0 Laredo 78 102 77 102 77 / 0 0 0 0 0 Alice 76 99 75 99 75 / 0 0 0 10 0 Rockport 82 94 82 94 82 / 10 10 0 10 0 Cotulla 77 102 77 103 76 / 0 0 0 0 0 Kingsville 77 98 76 97 76 / 0 0 0 0 0 Navy Corpus 82 92 81 93 81 / 10 10 0 10 0

CRP WATCHES/WARNINGS/ADVISORIES. TX . None. GM . None.



WC/87 . AVIATION


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCPT2 - 8774770 - Rockport, TX 7 mi46 min SE 11 G 16 89°F 1013.8 hPa
AWRT2 14 mi46 min SSE 12 G 17 87°F 1012.4 hPa
ANPT2 20 mi46 min ESE 17 G 19 86°F 1012 hPa
PTAT2 - Port Aransas, TX 20 mi124 min SE 14 G 16 86°F 89°F1013.6 hPa (-0.9)78°F
RTAT2 - 8775237 - Port Aransas, TX 20 mi46 min SE 8.9 G 15 87°F 1013.1 hPa
MHBT2 22 mi124 min SSE 8.9 G 14 87°F
SDRT2 - 8773037 - Seadrift, TX 26 mi46 min SE 15 G 19 87°F 1012.9 hPa
TAQT2 - 8775296 - Texas State Aquarium, TX 29 mi46 min 87°F 1011.9 hPa
NUET2 32 mi46 min S 16 G 18 1012.8 hPa
PACT2 - 8775792 - Packery Channel, TX 35 mi46 min ESE 14 G 18 87°F 1012.7 hPa
MQTT2 - 8775870 - Malaquite Beach (Corpus Christi), TX 39 mi46 min ESE 19 G 20 85°F
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 40 mi46 min S 14 G 16 86°F 1013.1 hPa
MBET2 42 mi46 min S 14 G 16 86°F 1012.1 hPa
VCAT2 42 mi46 min S 16 G 19 86°F 1012.9 hPa
IRDT2 47 mi46 min SE 16 G 19 87°F 1013.6 hPa

Wind History for Rockport, TX
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rockport Aransas County Airport, TX3 mi71 minSSE 1010.00 miFair89°F75°F63%1012.9 hPa
Mc Campbell, TX18 mi69 minSSE 14 G 1810.00 miFair89°F78°F71%1012.9 hPa
Port Aransas, Mustang Beach Airport, TX22 mi69 minSE 1210.00 miFair88°F76°F69%1013.5 hPa

Link to 5 minute data for KRKP

Wind History from RKP (wind in knots)
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Tide / Current Tables for Rockport, Aransas Bay, Texas (2)
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Rockport
Click for Map
Tue -- 12:30 AM CDT     Moonrise
Tue -- 06:56 AM CDT     Sunrise
Tue -- 09:29 AM CDT     0.24 feet High Tide
Tue -- 11:47 AM CDT     Last Quarter
Tue -- 01:53 PM CDT     Moonset
Tue -- 07:18 PM CDT     0.05 feet Low Tide
Tue -- 08:09 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.10.10.10.10.10.10.10.10.1

Tide / Current Tables for Aransas Pass, Texas Current
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Aransas Pass
Click for Map
Tue -- 12:30 AM CDT     Moonrise
Tue -- 12:59 AM CDT     0.44 knots Min Flood
Tue -- 02:54 AM CDT     0.48 knots Max Flood
Tue -- 06:56 AM CDT     Sunrise
Tue -- 10:00 AM CDT     -0.00 knots Slack
Tue -- 11:47 AM CDT     Last Quarter
Tue -- 01:53 PM CDT     Moonset
Tue -- 02:15 PM CDT     -0.73 knots Max Ebb
Tue -- 08:09 PM CDT     Sunset
Tue -- 08:17 PM CDT     0.00 knots Slack
Tue -- 11:46 PM CDT     0.83 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Corpus Christi, TX (21,6,7,8)
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Ground Weather Radar Station Corpus Christi, 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.