Wednesday, February24, 2021
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Marine Weather and Tides
Laguna Heights, TX

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:56AMSunset 6:30PM Wednesday February 24, 2021 7:35 PM CST (01:35 UTC) Moonrise 3:57PMMoonset 5:09AM Illumination 97% Phase: Waxing Gibbous; Moon at 13 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- 315 Pm Cst Wed Feb 24 2021
Tonight..Southeast winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. A moderate chop on the bay subsiding to a light chop after midnight. Patchy fog in the evening, then areas of fog after midnight.
Thursday..Southeast winds 10 to 15 knots. A moderate chop on the bay. Patchy fog in the morning. Slight chance of showers through the day.
Thursday night..Southeast winds 10 to 15 knots. A moderate chop on the bay. Patchy fog. Slight chance of showers.
Friday..South winds 5 to 10 knots. A light chop on the bay. Areas of fog in the morning.
Friday night..Southeast winds 5 to 10 knots. A light chop on the bay. Areas of fog through the night.
Saturday..Southeast winds 10 to 15 knots. A moderate chop on the bay. Areas of fog in the morning.
Saturday night..Southeast winds 10 to 15 knots. A moderate chop on the bay.
Sunday..Southeast winds 10 to 15 knots. A moderate chop on the bay.
Sunday night..Southeast winds 10 to 15 knots. A moderate chop on the bay.
Monday..Southeast winds 5 to 10 knots. A light chop on the bay. Slight chance of showers.
Monday night..East winds 5 to 10 knots shifting northeast after midnight. A light chop on the bay. Slight chance of showers.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 315 Pm Cst Wed Feb 24 2021
Synopsis..Areas of fog and patchy dense fog will remain possible for the nearshore gulf waters into Thursday morning. High pressure over the eastern gulf of mexico interacting with developing low pressure over the southern plains has increased the pressure gradient and causing breezy southerly winds over the laguna madre and nearshore gulf waters. Winds will relax this evening, with areas of fog and dense fog likely developing again along the coast, including the bay. Persistent southerly flow will then occur through the weekend, leading to building seas especially on the offshore waters.


7 Day Forecast for Marine Location Near Laguna Heights, TX
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location: 26.1, -97.23     debug


Area Discussion for - Brownsville, TX
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FXUS64 KBRO 242315 AAA AFDBRO

Area Forecast Discussion . UPDATED National Weather Service Brownsville TX 515 PM CST Wed Feb 24 2021

DISCUSSION. Updated for latest aviation discussion below.

AVIATION. Current satellite and surface observations are showing VFR conditions over all aerodromes. Later this evening MVFR conditions are expected to develop before IFR ceilings develop overnight. IFR is expected much of the overnight, especially across HRL and BRO, before lifting to MVFR mid morning. BRO will stay in MVFR conditions with low clouds on Thursday while HRL and MFE should return to VFR by midday. Gust winds are beginning to diminish across the area remaining moderate overnight. Thursday afternoon winds will increase again with gusts to 30 kts.

PREV DISCUSSION. /issued 247 PM CST Wed Feb 24 2021/

SHORT TERM (Now through Thursday Night): A pretty stagnant and stable weather pattern is expected in the short-term period. Subtropical ridging over the Caribbean Sea will keep abnormally warm temperatures in place through Thursday night. The biggest two stories will be the breezy surface winds during the daytime on Thursday and the dense fog expected along the coast. A strong pressure gradient will remain in place as low pressure across northeast Mexico interacts will strong high pressure over the eastern Gulf of Mexico. Similar to today, south to southeast winds will increase mid-late morning Thursday, peaking by early afternoon. Although winds will be breezy for the majority of the CWA, strongest winds will occur across Cameron and Willacy Counties, where gusts will rival today's gusts -- around 30 to 35 mph. A slow and nearly stationary, weak cold front will continue to push south from central Texas through the day on Thursday, stalling just north of the CWA by Thursday evening. Though chances are very slight, enough low level convergence may produce a few showers across the northern Ranchlands Thursday night into Friday morning. Expect very warm temperatures over the next couple of days, with lows in the mid-upper 60s tonight and daytime highs in the mid-upper 80s on Thursday afternoon. Lows will be a tad lower, especially for the Northern Ranchlands, on Thursday night as the weak cold front tries to ooze its way south.

A Marine Dense Fog Advisory has been issued for the nearshore Gulf waters through 9 AM Thursday morning. There might be periods where the fog lifts or dissipates this afternoon, but ingredients will remain in place for more fog development this evening and overnight tonight, especially over the nearshore Gulf waters. Patchy dense fog may advect over SPI and the Laguna Madre later on this evening or tonight. A Dense Fog Advisory may be needed for coastal zones of Cameron, Willacy, and Kenedy Counties.

LONG TERM (Friday through Wednesday): A weak front will make its way south in the short term, stalling at our northern doorstep Thursday night as the supporting short wave trough scoots east, leaving the underlying front behind with little momentum. Still, lowered Friday high temps a skosh below the blend in anticipation of slightly cooler air reaching the ranchlands. The front will start to move back north a day or so later. The upper flow will remain southwest through the weekend with relatively quiet, albeit warming weather as southeast flow becomes more robust. A short wave trough will burrow through the Southwest United States and lift across North Texas on Monday into Monday night. This will bring another weak, underlying front through the region on Monday. High pressure will then spread across the region behind the front with slightly cooler weather through Wednesday under a fairly zonal upper flow.

MARINE: Now through Thursday Night: Conditions for dense sea fog will persist through much of the short-term period. A Dense Fog Advisory is currently in effect for the nearshore Gulf waters through 9 AM CST Thursday. Fog may push into the Laguna madre as early as late afternoon or early this evening. Otherwise, high pressure over the eastern Gulf will maintain light to moderate south- southeasterly flow. Winds will be breeziest during the daytime Thursday as diurnal heating tightens the pressure gradient along the coast. Other than sea fog, relatively favorable marine conditions will continue overnight tonight and through the day on Thursday, with wind speeds around 10 to 15 knots (occasionally higher) and wave heights around 3 to 4 feet.

Friday through Monday Night . Light to moderate southeast to south winds will hold up all the way through Monday. Moderate seas will occasionally trend higher, however, into small craft should exercise caution territory. A front due on Monday will shift winds to moderate northeast which will support moderate to high seas. Sea fog will be possible the next three mornings as the nearshore waters remain cool under higher dew point air.

PRELIMINARY POINT TEMPS/POPS. BAYVIEW/PORT ISABEL 66 79 65 74 / 10 10 10 10 BROWNSVILLE 67 81 67 77 / 10 10 10 10 HARLINGEN 65 82 65 78 / 10 10 10 10 MCALLEN 68 84 66 80 / 10 10 10 10 RIO GRANDE CITY 64 88 62 81 / 0 0 10 10 SOUTH PADRE ISLAND 65 70 66 70 / 10 10 10 10

BRO WATCHES/WARNINGS/ADVISORIES. TX . None. GM . Dense Fog Advisory until 9 AM CST Thursday for GMZ150-155.



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

68-McGinnis/Aviation


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PTIT2 - 8779770 - Port Isabel, TX 3 mi48 min SSE 12 G 14 66°F 60°F1016.6 hPa
PCGT2 - 8779748 - South Padre Island CGS, TX 4 mi84 min SE 9.9 G 12 63°F 60°F1014.1 hPa
BZST2 5 mi48 min SSE 8.9 G 12 62°F 55°F1013.7 hPa
RLIT2 12 mi48 min SSE 14 G 18 68°F 71°F1013.4 hPa
PMNT2 33 mi48 min 70°F 67°F1014.7 hPa
42045 - PI-745 TABS K 40 mi156 min SSE 12 G 16 69°F 70°F1014.7 hPa (-0.9)

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, TX7 mi43 minSSE 1410.00 miFair71°F65°F81%1014.3 hPa
Brownsville, Brownsville / South Padre Island International Airport, TX17 mi43 minSSE 1210.00 miFair71°F65°F81%1014.5 hPa

Link to 5 minute data for KSPL

Wind History from SPL (wind in knots)
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Last 24hrSE7S7S10S8S8S9S8W5SW11S14SW13SW8SW6N4E3NE7NE6E4E5E6E4E3E4Calm
1 day agoS8S7S4SW5NW3N3N3N6E4NE4E5E13SE16NW8S4S7S5CalmCalmSE6SE6SE5SE6SE5
2 days agoSE7SE7SE8SE3S5S6S6SW5NW3NW4SW8SW11S20SW16
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Tide / Current Tables for Port Isabel, Texas
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Port Isabel
Click for Map
Wed -- 05:08 AM CST     Moonset
Wed -- 06:56 AM CST     Sunrise
Wed -- 07:18 AM CST     -0.44 feet Low Tide
Wed -- 03:57 PM CST     Moonrise
Wed -- 05:13 PM CST     1.27 feet High Tide
Wed -- 06:27 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.70.50.30-0.2-0.4-0.4-0.4-0.3-0.10.20.50.811.11.21.31.31.21.21.11.11

Tide / Current Tables for Matamoros, Tamaulipas, Mexico
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Matamoros
Click for Map
Wed -- 05:09 AM CST     Moonset
Wed -- 06:57 AM CST     Sunrise
Wed -- 07:06 AM CST     -0.45 feet Low Tide
Wed -- 03:58 PM CST     Moonrise
Wed -- 04:29 PM CST     1.27 feet High Tide
Wed -- 06:29 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.70.50.30-0.2-0.4-0.5-0.4-0.3-00.30.60.81.11.21.31.31.21.21.11.111

Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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Ground Weather Radar Station



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.