Friday, January24, 2020
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Marine Weather and Tides
Laguna Vista, 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 6:08PM Friday January 24, 2020 7:19 PM CST (01:19 UTC) Moonrise 7:13AMMoonset 6:04PM Illumination 0% Phase: New Moon; Moon at 29 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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GMZ130 Laguna Madre From The Port Of Brownsville To The Arroyo Colorado- Laguna Madre From The Arroyo Colorado To 5 Nm North Of Port Mansfield Tx- Laguna Madre From 5 Nm North Of Port Mansfield To Baffin Bay Tx- 426 Pm Cst Fri Jan 24 2020
Tonight..East winds 5 to 10 knots. A light chop on the bay.
Saturday..Southeast winds 10 to 15 knots. A moderate chop on the bay. Slight chance of rain showers in the morning. Slight chance of Thunderstorms through the day. Rain showers likely in the afternoon.
Saturday night..Southeast winds 5 to 10 knots shifting south after midnight. A light chop on the bay. Showers likely in the evening. Slight chance of Thunderstorms through the night. Chance of showers after midnight. Patchy fog after midnight.
Sunday..West winds 5 to 10 knots shifting north in the afternoon. A light chop on the bay. Patchy fog in the morning.
Sunday night..Northeast winds 5 to 10 knots diminishing to around 5 knots after midnight. A light chop on the bay subsiding to smooth after midnight.
Monday..Northeast winds around 5 knots becoming east in the afternoon. Smooth on the bay building to a light chop in the afternoon.
Monday night..Southeast winds 5 to 10 knots. A light chop on the bay.
Tuesday..Southwest winds around 5 knots becoming northwest in the afternoon. Smooth on the bay building to a light chop in the afternoon. Chance of showers and slight chance of Thunderstorms.
Tuesday night..North winds 10 to 15 knots. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
Wednesday..North winds 5 to 10 knots shifting northeast in the afternoon. A light chop on the bay.
Wednesday night..East winds 5 to 10 knots. A light chop on the bay. Slight chance of showers and Thunderstorms.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 426 Pm Cst Fri Jan 24 2020
Synopsis..Moderate to breezy southeast winds and higher seas will develop on Saturday and Saturday night due to a low pressure system moving across north texas tightening the gradient off the coast. Hazardous conditions will be possible across the far offshore waters late Saturday afternoon and Sunday before a weak front moves through Sunday afternoon and shifts winds back to the north. A stronger cold front is expected late Tuesday, which may bring a period of strong northwest winds and building seas Tuesday night and Wednesday.


7 Day Forecast for Marine Location Near Laguna Vista, TX
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location: 26.14, -97.28     debug


Area Discussion for - Brownsville, TX
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FXUS64 KBRO 250013 AAA AFDBRO

Area Forecast Discussion . UPDATED National Weather Service Brownsville TX 613 PM CST Fri Jan 24 2020

DISCUSSION. Updated for latest aviation discussion below.

AVIATION. VFR conditions will continue through the night with increasing clouds expected through the day on Saturday as southeast flow increases. Moisture will increase and deepen ahead of an approaching upper-level disturbance. This will lead to deteriorating ceilings with MVFR conditions developing. Models indicate rain chances also increasing with showers possibly lowering visibilities at times, especially Saturday afternoon and night.

PREV DISCUSSION. /issued 249 PM CST Fri Jan 24 2020/

SHORT TERM (Tonight through Saturday Night): Uneventful weather tonight will turn a little more unsettled on Saturday and Saturday night. Weak mid level ridging overhead will break down as a southern High Plains short wave trough moves across Oklahoma during the period, while another weakly connected short wave trough over Baja moves similarly east over Central Mexico. A tighter surface pressure gradient will enhance low level return flow and moisture Saturday, while instability embedded in the southwest flow in advance of the Baja upper feature will support lift late Saturday, from afternoon to Saturday night. A time height profile shows dry air being replaced by a deep column of moist air Saturday morning through afternoon. The ingredients will be enough to support showers and a few moderate strength embedded thunderstorms. Unorganized showers will produce moderate rainfall, with localized amounts up to an inch, but here and there amounts of slightly higher value will be possible. The presence of low level moisture, not to mention wet ground, and lighter winds will increase fog potential Sunday morning. Will see increasing cloudiness tonight, with cloudy skies by Saturday and Saturday night. Temps will be slightly above normal overall, but may be tempered locally by rain.

LONG TERM (Sunday through Friday): Another pretty strong 500 mb short wave will push through TX Tues which will likely spin up a surface low near the TX coastline Tues Night. Overall moisture levels will remain pretty limited as this system moves through the region. So will maintain only some low end pops on Tues. As this system exits the region, another fairly large 500 mb trough/closed low is expected to move into the state late Thurs into Fri which will increase the divergence aloft across the RGV Thurs into Fri. Once again, overall moisture levels associated with this system will remain somewhat marginal for the end of the work week. However, the good 500 mb PVA associated with this system will likely overcome the limited moisture levels to allow for some decent pops by the end of next week.

The relatively progressive west to east 500 mb flow pattern over the lower 48 states will maintain overall temps near to above climo for late January. CAA will likely remain pretty limited across the region.

The GFS and the ECMWF models are in reasonable agreement in the overall pattern through Day 7/8 for both temps and pops. Run to run consistency with both models are also pretty stable. So will stick close to a general model blend for next week.

Overall forecast confidence is above average in the longer range period.

MARINE (Now through Saturday night): Moderate to breezy southeast winds and higher seas will develop on Saturday and Saturday night due to a tighter pressure gradient. Small craft will need to exercise caution, with wave heights potentially bordering low end small craft advisory criteria Saturday night on the open Gulf waters. Upper instability will also kick off showers and possible thunderstorms during the latter portion of the short term.

Sunday through Wednesday Night: The PGF may strengthen enough to push the Gulf conditions up close to SCA levels early Sun as the surface low pressure area impacts the TX coastline. The PGF will then decrease enough next week to allow for fairly low winds and seas to prevail through Tues. Another round of SCA conditions may develop around midweek of next week as the next surface low pressure area develops/moves offshore of the lower TX Tues Night/Wed. The PGF will then relax some Wed Night as the marine surface low shifts eastwards across the Gulf of Mex.

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

This product is also available on the web at: HTTP://WEATHER.GOV/RGV

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PTIT2 - 8779770 - Port Isabel, TX 6 mi50 min ENE 5.1 G 8 65°F1019.9 hPa
BZST2 8 mi56 min E 7 G 8 65°F 66°F1018.1 hPa
PCGT2 - 8779748 - South Padre Island CGS, TX 8 mi50 min E 5.1 G 8 1019.1 hPa
PMNT2 30 mi50 min 67°F1020 hPa
RSJT2 - 8777812 - Rincon del San Jose; Potrero Lopeno SW, TX 47 mi50 min E 8 G 9.9 64°F1019.7 hPa

Wind History for South Padre Island C.G Station, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Isabel, Port Isabel-Cameron County Airport, TX3 mi27 minE 610.00 miFair62°F54°F75%1019.7 hPa
Brownsville, Brownsville / South Padre Island International Airport, TX18 mi27 minENE 410.00 miMostly Cloudy63°F54°F73%1019.8 hPa
Harlingen, Rio Grande Valley International Airport, TX22 mi28 minE 510.00 miFair59°F53°F81%1019.8 hPa

Link to 5 minute data for KPIL

Wind History from PIL (wind in knots)
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Last 24hrNE7NE8NE7NE7NE6NE7NE7NE7NE7NE8NE6NE5NE5NE10NE12NE11NE12NE9NE10E9E11E9E7E6
1 day agoS5SE6S5W3S4CalmCalmSE3S4CalmS3CalmNW5N6NW6N9N9N8N8NE10NE9NE10E6NE9
2 days agoSE16SE18
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Tide / Current Tables for Port Isabel, Texas
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Port Isabel
Click for Map
Fri -- 07:11 AM CST     Moonrise
Fri -- 07:15 AM CST     Sunrise
Fri -- 09:05 AM CST     -0.63 feet Low Tide
Fri -- 03:44 PM CST     New Moon
Fri -- 06:03 PM CST     Moonset
Fri -- 06:05 PM CST     Sunset
Fri -- 07:04 PM CST     1.22 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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110.80.70.40.2-0.1-0.4-0.6-0.6-0.6-0.4-0.20.10.50.711.11.21.21.21.21.11.1

Tide / Current Tables for Port Isabel, Texas (2)
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Port Isabel
Click for Map
Fri -- 02:13 AM CST     0.86 feet High Tide
Fri -- 07:11 AM CST     Moonrise
Fri -- 07:15 AM CST     Sunrise
Fri -- 09:10 AM CST     -0.79 feet Low Tide
Fri -- 03:44 PM CST     New Moon
Fri -- 06:03 PM CST     Moonset
Fri -- 06:05 PM CST     Sunset
Fri -- 07:19 PM CST     0.93 feet High Tide
Fri -- 10:07 PM CST     0.79 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.90.90.80.70.40-0.4-0.7-0.8-0.8-0.7-0.5-0.20.10.30.60.80.90.90.90.80.80.8

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 Brownsville, TX (20,4,5,8)
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Ground Weather Radar Station Brownsville, 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 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.