Sunday, September24, 2017 L-36.com


Marine Weather and Tides
South Padre Island, TX

Version 3.4
What's New / NOTES
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.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:18AMSunset 7:24PM Sunday September 24, 2017 7:20 AM CDT (12:20 UTC) Moonrise 10:14AMMoonset 9:36PM Illumination 15% Phase: Waxing Crescent; Moon at 4 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- 433 Am Cdt Sun Sep 24 2017
Today..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay increasing to a moderate chop in the afternoon. Slight chance of showers and Thunderstorms in the morning, then chance of showers and Thunderstorms in the afternoon.
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. Slight chance of showers and Thunderstorms.
Monday..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay increasing to a moderate chop in the afternoon. Chance of showers and Thunderstorms.
Monday night..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. Slight chance of showers and Thunderstorms.
Tuesday..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay increasing to a moderate chop in the afternoon. Chance of showers and Thunderstorms.
Tuesday night..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. Chance of showers and Thunderstorms.
Wednesday..East winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay increasing to a moderate chop in the afternoon. Chance of showers and Thunderstorms.
Wednesday night..East 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. Chance of showers and Thunderstorms.
Thursday..East winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay increasing to a moderate chop in the afternoon. Chance of showers and Thunderstorms.
Thursday night..East winds 10 to 15 knots becoming northeast 5 to 10 knots after midnight. A moderate chop on the bay subsiding to a light chop after midnight. Slight chance of showers and Thunderstorms.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 433 Am Cdt Sun Sep 24 2017
Synopsis..Light to moderate southeast winds and low gulf seas will continue through much of the forecast period as surface high pressure remains in place over the southeastern united states. Isolated to scattered showers and Thunderstorms will also be possible each day as abundant moisture remains in place across the area. A cold front may approach south texas late next week which could increase winds and rain chances.

7 Day Forecast for Marine Location Near South Padre Island, TX
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location: 26.11, -97.16     debug


Area Discussion for - Brownsville, TX
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Fxus64 kbro 241146 aaa
afdbro
area forecast discussion... Updated
national weather service brownsville tx
646 am cdt Sun sep 24 2017

Discussion Updated for latest aviation discussion below.

Aviation Kbro radar has shown some patchy marine showers
trying to edge in along the coastline from the gulf of mex
throughout the overnight hours. All of these patches of conv have
been dissipating as they reach the coastline and encounter more
stable air. Accordingly will include a mention of vcsh for the
bro and hrl areas for the first few hours of the current TAF set.

Expect daytime heating and the local sea breeze effects to fire
off some isold sct conv during the afternoon and early evening
hours today. This activity will likely be sparse enough to limit
the aviation impacts to the local airports. So will go with
overallVFR conditions of the rgv aiports with some brief
reductions to MVFR levels due to lowered ceilings from any conv
that passes near the rgv airports. However will only mention vcts
during the afternoon hours.

Prev discussion issued 421 am cdt Sun sep 24 2017
short term (now through Monday): kbro radar shows some patchy
marine showers trying to edge in along the coastline from the gulf
of mex. The 00z bro sounding shows that the atms capes and pwat
values over the rgv have not changed much over the previous 24
hours. 500 mb troffing continues to slowly strengthen over the rgv
as a deep closed low digs east from the western states and another
open trough over the gulf coast drifts west towards the tx coast.

This increasing 500 mb troffing will combine with the daytime
heating to help generate some afternoon and early evening conv over
the region. The GFS and ECMWF pops through the short term range
generally in the 20 % range through tomorrow while the NAM comes in
the wettest with conv chcs around 30 %. So will opt for a model
blend of the short term pops. For temps will edge back the highs a
bit today and Monday as the 500 mb troffing increases over the
region.

Long term (Monday night through Saturday): the forecast period
begins with a large scale mid-level trough over the western conus
and a mid-level ridge over the western gulf of mexico. The trough
weakens by mid-week with a cut-off 500mb low becoming centered near
the four corner region on Thursday. Mid-level ridging remains
anchored along the texas coast through the period. Precipitable
water values near or above two inches will support scattered showers
and thunderstorms Tuesday through Thursday. The best rain chances
will remain across the western portions of deep south texas due to
the close proximity to the mid-level low. The GFS remains the most
robust on rain chances for Tuesday through Thursday.

A cold front is expected to move across northern texas on Tuesday
and will gradually move south through the week. Deep tropical
moisture is expected to pool ahead and along the frontal boundary.

The gfs ECMWF continues to suggests the front will move into deep
south texas Thursday night into Friday. Rain chances diminish Friday
night into Saturday as drier air slowly filters into the region in
the wake of the front. Temperatures will to remain above normal
through Thursday night due to abundant cloud cover and increase rain
chances. Near to slightly below normal temperatures are expected
Friday night through the weekend as surface high pressure builds
into the region.

Marine (now through Monday): broad surface ridging sprawled over
the eastern states will maintain low to moderate winds and seas
across the lower tx coastline. Expect SE winds across the region
with gulf seas ranging generally in the 2 to 3 foot range. A light
to moderate chop is expected on the laguna madre through tomorrow.

No SCA conditions expected through Monday.

Monday night through Thursday night... Favorable marine conditions
with light to moderate onshore flow and low to moderate seas will
prevail through late week. Isolated to scattered showers and
thunderstorms are expected at times, especially late night into the
early morning. A cold front is forecast to move through deep south
texas and the adjacent coastal waters Thursday night into Friday.

Small craft exercise caution conditions likely in the wake of the
front due to higher winds and elevated seas.

Bro watches warnings advisories
Tx... None.

Gm... None.

This product is also available on the web at:
http: weather.Gov rgv
short term... 60
long term... 63
graphicast upper air... 62


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BZST2 3 mi51 min SE 12 G 14 83°F 1008.3 hPa
PCGT2 - 8779748 - South Padre Island CGS, TX 3 mi51 min SSE 12 G 14 83°F 1009.4 hPa
PTIT2 - 8779770 - Port Isabel, TX 4 mi51 min SE 9.9 G 11 82°F 84°F1009.2 hPa
RLIT2 12 mi51 min ESE 12 G 14 83°F 83°F1009.1 hPa
PMNT2 34 mi51 min 81°F 85°F1009.2 hPa
42045 - PI-745 TABS K 36 mi141 min S 12 G 14 84°F1009.2 hPa

Wind History for South Padre Island C.G Station, TX
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Isabel, Port Isabel-Cameron County Airport, TX10 mi28 minSSE 49.00 miOvercast80°F77°F90%1009 hPa
Brownsville, Brownsville / South Padre Island International Airport, TX20 mi28 minSE 410.00 miFair76°F75°F97%1009.3 hPa

Wind History from SPL (wind in knots)
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Last 24hrSE7S7S10S8S8S9S8W5SW11S14SW13SW8SW6N4E3NE7NE6E4E5E6E4E3E4Calm
1 day agoS8S7S4SW5NW3N3N3N6E4NE4E5E13SE16NW8S4S7S5CalmCalmSE6SE6SE5SE6SE5
2 days agoSE7SE7SE8SE3S5S6S6SW5NW3NW4SW8SW11S20SW16
G21
SW14
G18
S15S18S15S14S10SW9SW8S9S7

Tide / Current Tables for Queen Isabella Causeway (east end), Texas
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Queen Isabella Causeway (east end)
Click for Map
Sun -- 01:44 AM CDT     1.07 feet Low Tide
Sun -- 04:20 AM CDT     1.27 feet High Tide
Sun -- 07:18 AM CDT     Sunrise
Sun -- 11:13 AM CDT     Moonrise
Sun -- 12:23 PM CDT     0.44 feet Low Tide
Sun -- 07:22 PM CDT     Sunset
Sun -- 09:05 PM CDT     1.55 feet High Tide
Sun -- 10:36 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.11.11.21.31.31.21.110.80.60.50.40.50.50.70.91.11.31.41.51.51.51.5

Tide / Current Tables for Matamoros, Tamaulipas, Mexico
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Matamoros
Click for Map
Sun -- 01:10 AM CDT     1.59 feet Low Tide
Sun -- 04:49 AM CDT     1.67 feet High Tide
Sun -- 07:19 AM CDT     Sunrise
Sun -- 11:14 AM CDT     Moonrise
Sun -- 12:22 PM CDT     0.82 feet Low Tide
Sun -- 07:23 PM CDT     Sunset
Sun -- 09:00 PM CDT     1.89 feet High Tide
Sun -- 10:37 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.61.61.61.71.71.61.51.41.210.90.80.80.91.11.31.51.61.81.91.91.91.8

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Brownsville, TX (8,2,3,4)
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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 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.