Friday, August23, 2019 L-36.com


Marine Weather and Tides
Laguna Heights, TX

Version 3.4
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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:05AMSunset 8:00PM Friday August 23, 2019 8:04 AM CDT (13:04 UTC) Moonrise 12:00AMMoonset 1:00PM Illumination 45% 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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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- 355 Am Cdt Fri Aug 23 2019
Today..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay building to a moderate chop in the afternoon. Scattered showers and Thunderstorms.
Tonight..Southeast winds 10 to 15 knots becoming south 5 to 10 knots after midnight. A moderate chop on the bay subsiding to a light chop after midnight. Isolated showers and Thunderstorms.
Saturday..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay building to a moderate chop in the afternoon. Scattered showers and Thunderstorms.
Saturday night..Southeast winds 10 to 15 knots becoming south 5 to 10 knots after midnight. A moderate chop on the bay subsiding to a light chop after midnight.
Sunday..South winds 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. A light chop on the bay building to a moderate chop in the afternoon. Slight chance of showers and Thunderstorms.
Sunday night..South winds 10 to 15 knots. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
Monday..South winds 10 to 15 knots becoming southeast 15 to 20 knots in the afternoon. A moderate chop on the bay building to choppy in the afternoon. Slight chance of showers and Thunderstorms.
Monday night..Southeast winds 15 to 20 knots becoming south 10 to 15 knots after midnight. Choppy on the bay subsiding to a moderate chop after midnight.
Tuesday..Southeast winds 10 to 15 knots. A moderate chop on the bay. Slight 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.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 355 Am Cdt Fri Aug 23 2019
Synopsis..A surface trough over the northwestern gulf of mexico will maintain a weak pressure gradient, generally resulting in light-to-moderate southeast winds through tonight. Seas should remain relatively low at 2 to 4 feet. This trough will also produce periods of showers and Thunderstorms, peaking over the weekend. Southeasterly winds gradually increase through the weekend as well with thermal troughing to the west reasserting itself. Seas consequently build to moderate. A frontal boundary stalling over the southern plains should maintain the modest pressure gradient into early next week.


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 231129 aab
afdbro
area forecast discussion... Updated
national weather service brownsville tx
629 am cdt Fri aug 23 2019

12z aviation update...

Discussion Updated for latest aviation discussion below.

Aviation Vfr conditions should prevail through this TAF cycle.

Can't rule out a brief reduction to the upper limits of MVFR this
morning, generally before 15z. Any low clouds should mix out
fairly quickly and any reduction will be very brief. That said,
sea breeze shower storm activity is also possible during the late
morning through the afternoon hours, however, given low confidence
and the spotty nature, only used vcs for only the coastal
terminals. Breezy conditions during the daylight hours will again
be possible today with some gusts into the 20kt range.

Prev discussion issued 421 am cdt Fri aug 23 2019
short term (today through Saturday): today should be very similar
to yesterday. Hot and somewhat breezy conditions expected once
again. Similar to yesterday, diurnal convection can be expected
along the sea breeze from late morning through the afternoon hours,
generally along and east of i69c highway 281. Cams, especially the
arw show this very well. Offshore and along the coastal counties
there may be a streamer shower or two between now and sunrise. Not
expecting much rainfall with this activity.

The big picture shows a mid level vort and surface trough across the
western gulf. This will keep pops relatively high offshore through
much of the short term period. We'll need to watch areas across the
upper valley western tier counties toward the end of the short term
period. There appears to be a slightly higher QPF signal in rather
close proximity. An upper level vort develops across northern mexico
coupled with some subtle surface troughing.

This will likely produce convection, however, whether or not this
drifts into deep south tx is still up in the air. With the slightly
lower winds and increasing humidity values, fire weather concerns
continue to decrease.

Long term (Saturday night through Thursday): the long term period
begins with the tropical wave mid-level trough pushing into the
northwestern gulf and mid level riding overhead, keeping conditions
hot and humid for deep south texas through the weekend. On Sunday,
the ECMWF has a shortwave trough moving through the southern plains
with a 500 mb low pinching off the base of this trough and
eventually nudging into deep south texas by evening. This feature
also brings a 500 mb vorticity MAX and precipitable water values
around 2 inches to our cwa, therefore increasing our rain chances.

In contrast, the GFS has a weaker shortwave trough and keeps its
axis offshore. Have gone with a blend of these two solutions with
a slight bias towards the wetter GFS solution for now, making
Sunday our best chance for showers and thunderstorms for the long
term period.

On Monday afternoon, models agree that a 500 mb high centered over
the desert southwest region begins to slide in behind the shortwave
trough. Ridging aloft will help to keep conditions hot and mostly
dry. However, with residual moisture overhead, have gone with a
slight chance of showers and thunderstorms each day to account for
possible sea breeze development.

In summary, not much has changed from the previous package, except
for the slight increase of pops on Sunday.

Marine (today through Saturday): mariners can expect generally the
same conditions as the last several days, except maybe a little less
wind. Light to moderate winds are expected for the gulf waters,
which will produce seas of 3 to 4 feet. For the laguna, during the
daylight hours expect winds of around 15 knots with locally higher
gusts, so we may need cautionary headlines in the coastal waters
product(s) at some point. That said, only minimal scec is
currently anticipated as winds remain rather light with the
closer proximity of the surface trough just offshore.

Showers tstorm chances remain across the gulf waters, especially
beyond 20 nautical miles. With the aforementioned surface trough,
diurnally driven pockets of convection are expected to develop,
especially where moisture quality is maximized.

Saturday night through Thursday... In general, a weak to moderate
surface pressure gradient will lead to moderate south southeasterly
flow and moderate seas through the period. Small craft exercise
caution conditions may be needed across the bay each
afternoon evening, possibly across the near-shore waters, as well.

Showers and thunderstorms continue to be possible each day with
ample environmental moisture over the western gulf waters.

Bro watches warnings advisories
Tx... None.

Gm... None.

This product is also available on the web at:
http: weather.Gov rgv
aviation update... Frye-55


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PTIT2 - 8779770 - Port Isabel, TX 3 mi53 min SSE 5.1 G 6 82°F 83°F1011.5 hPa
PCGT2 - 8779748 - South Padre Island CGS, TX 4 mi53 min SSE 2.9 G 4.1 81°F 1011.8 hPa
BZST2 5 mi53 min SSE 4.1 G 5.1 81°F 78°F1010.9 hPa
RLIT2 12 mi53 min SSE 8 G 8.9 84°F 84°F1010.9 hPa
PMNT2 33 mi53 min 82°F 88°F1011.7 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, TX7 mi72 minSSE 37.00 miA Few Clouds80°F75°F87%1011.1 hPa
Brownsville, Brownsville / South Padre Island International Airport, TX17 mi72 minSE 610.00 miFair81°F79°F94%1010.9 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
Fri -- 12:29 AM CDT     Moonrise
Fri -- 01:06 AM CDT     1.12 feet High Tide
Fri -- 07:05 AM CDT     Sunrise
Fri -- 09:58 AM CDT     Last Quarter
Fri -- 01:59 PM CDT     Moonset
Fri -- 03:51 PM CDT     0.18 feet Low Tide
Fri -- 07:57 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.11.11.11.11.11.11.11.110.90.80.60.40.30.20.20.20.30.50.70.811.1

Tide / Current Tables for Matamoros, Tamaulipas, Mexico
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Matamoros
Click for Map
Fri -- 12:00 AM CDT     1.56 feet High Tide
Fri -- 12:30 AM CDT     Moonrise
Fri -- 02:56 AM CDT     1.54 feet Low Tide
Fri -- 06:33 AM CDT     1.57 feet High Tide
Fri -- 07:06 AM CDT     Sunrise
Fri -- 09:58 AM CDT     Last Quarter
Fri -- 02:00 PM CDT     Moonset
Fri -- 03:41 PM CDT     0.62 feet Low Tide
Fri -- 07:58 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.61.51.51.51.61.61.61.51.51.41.210.90.70.60.60.70.80.91.11.31.51.6

Weather Map and Satellite Images
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wmap_A
GOES 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 (9,2,3,4)
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Ground Weather Radar Station Brownsville, TX
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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.