Thursday, May23, 2019 L-36.com


Marine Weather and Tides
South Padre Island, TX

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:39AMSunset 8:14PM Thursday May 23, 2019 12:37 AM CDT (05:37 UTC) Moonrise 11:40PMMoonset 9:45AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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- 950 Pm Cdt Wed May 22 2019
.small craft advisory for winds in effect until 7 am cdt Thursday...
Rest of tonight..Southeast winds around 20 knots. Rough on the bay.
Thursday..Southeast winds 15 to 20 knots increasing to 20 to 25 knots in the afternoon. Rough on the bay.
Thursday night..Southeast winds 15 to 20 knots. Choppy on the bay.
Friday..Southeast winds 15 to 20 knots. Choppy on the bay.
Friday night..Southeast winds 15 to 20 knots. Choppy on the bay.
Saturday..Southeast winds 15 to 20 knots. Choppy on the bay.
Saturday night..Southeast winds 15 to 20 knots. Choppy on the bay.
Sunday..Southeast winds 15 to 20 knots. Choppy on the bay.
Sunday night..Southeast winds 15 to 20 knots. Choppy on the bay.
Monday..Southeast winds 15 to 20 knots. Choppy on the bay.
Monday night..Southeast winds 15 to 20 knots. Choppy on the bay.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 950 Pm Cdt Wed May 22 2019
Synopsis..Moderate to strong southeast winds and moderate to high seas will persist through the forecast. Surface high pressure anchored over the gulf of mexico will continue to combine with low pressure across the southern plains to support a tight pressure gradient and the related higher winds and seas.


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 230015 aaa
afdbro
area forecast discussion... Updated
national weather service brownsville tx
715 pm cdt Wed may 22 2019

Discussion A few minor changes to the forecast grids include
adjusting cloud cover tonight and tomorrow for a quicker east to
west spread of the marine stratus layer and raise high
temperatures for Thursday a few degrees, which mainly affect the
coastal strip and the lower and mid rgv. Heat remains the main
forecast issue with heat indices expected to once again exceed 100
degrees once again Thursday afternoon.

Discussion Updated for latest aviation discussion below.

Aviation MVFR CIGS to prevail this evening and overnight with
the marine stratus layer advancing westward rather quickly. The
lower CIGS continue into Thursday morning before mixing out with a
mix of higher end MVFR to lower end ofVFR Thursday afternoon.

Pressure gradient remains moderate to strong with southeast flow
15-20 knots tonight and 20-30 knots Thursday.

Prev discussion issued 259 pm cdt Wed may 22 2019
short term (now through Thursday night): the main forecast issue in
the short term will be heat, with mid 70s to near 80 degrees at
night, and 90s to near the century mark on Thursday. Heat index
values will stay in the 80s to lower 90s until late in the
evening, while values on Thursday afternoon will reach the 102 to
107 degree range for a few hours in the afternoon for portions of
deep south texas and the rgv. The elevated heat index values will
be supported by dew points well into the 70s for most of the area.

On the large scale, stable mid level ridging over the lower
southeast united states extends west into portions of east texas.

High pressure over the gulf will provide continued moist, low
level southeast flow, along with moderate to breezy southeast
winds. If anything, downstream mid level ridging will build
slightly farther west to over the north central gulf in the short
term. The stable conditions will favor haze, as particulate matter
from burning in mexico continues to move north on the prevailing
winds. A mix of clouds and Sun will prevail on Thursday, though
the extra morning cloudiness will scatter out to some extent by
afternoon. Rain chances will remain muted in the short term.

Long term (Friday through Wednesday): hot and breezy conditions
will be the story in the long term as we finish off the week and
head into the weekend. In the midst of an amplified upper-level
flow, high pressure will broaden across the southeastern u.S.,
extending westward into the western gulf and across deep south
texas. Models are in fair agreement through much of the long term
period, therefore, few changes were needed in this forecast
update. Daily high temperatures will be a few degrees above normal
with elevated dew points, maintaining heat index values of 105 or
greater at times. Model time-heights show very shallow moisture
with rh values below 25% above 850mb. The only notable chance of a
shower or storms is on Friday with a bit deeper moisture
available near the coast. Breezy conditions along the coastal
counties may hinder seabreeze development, so have kept silent 10%
pop for now.

Marine (now through Thursday night): moderate to strong
southeast winds and moderate to high seas will persist through the
forecast. A broad and strong surface high pressure area will
remain anchored in place over the gulf of mexico, supporting a
tighter pressure gradient and the related higher winds and seas.

Small craft advisory conditions will persist in the short term,
with wave heights in addition to winds meeting criteria on the
gulf, and choppy to rough conditions on the bay.

Friday through Wednesday: adverse marine conditions will be
possible each day as a series of surface lows develop and move
through the central plains, tightening the pressure gradient
across the western gulf. Periodic small craft advisories will
likely be needed for at least hazardous seas. The gradient should
relax a bit early next week, though small craft exercise caution
conditions can be expected.

Bro watches warnings advisories
Tx... None.

Gm... Small craft advisory for winds until 7 am cdt Thursday for
gmz130-132-135.

Small craft advisory until 7 am cdt Thursday for gmz150-155-170-
175.

This product is also available on the web at:
http: weather.Gov rgv
59 61


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BZST2 3 mi37 min SE 14 G 16 79°F 80°F1010.1 hPa (+2.4)
PCGT2 - 8779748 - South Padre Island CGS, TX 3 mi43 min SE 13 G 15 80°F 1011.1 hPa
PTIT2 - 8779770 - Port Isabel, TX 4 mi37 min SE 15 G 17 81°F 82°F1010.8 hPa (+2.2)
42044 - PS-1126 TABS J 8 mi97 min 1009.9 hPa
RLIT2 12 mi37 min SE 18 G 23 84°F 85°F1010.7 hPa (+2.4)
PMNT2 34 mi37 min 83°F 83°F1010.7 hPa (+2.3)
42045 - PI-745 TABS K 36 mi97 min SE 19 G 25 79°F 80°F1010.5 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, TX10 mi44 minSE 16 G 247.00 miOvercast83°F75°F79%1010.1 hPa
Brownsville, Brownsville / South Padre Island International Airport, TX20 mi44 minSE 13 G 2310.00 miOvercast84°F79°F85%1009.9 hPa

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 Padre Island (South), Texas (2)
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Padre Island (South)
Click for Map
Thu -- 06:38 AM CDT     Sunrise
Thu -- 10:11 AM CDT     1.51 feet High Tide
Thu -- 10:45 AM CDT     Moonset
Thu -- 08:12 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-00.10.30.50.711.21.41.51.51.51.41.41.41.31.31.21.21.10.90.70.40.2

Tide / Current Tables for Matamoros, Tamaulipas, Mexico
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Matamoros
Click for Map
Thu -- 12:34 AM CDT     -0.40 feet Low Tide
Thu -- 06:40 AM CDT     Sunrise
Thu -- 10:47 AM CDT     Moonset
Thu -- 10:49 AM CDT     1.25 feet High Tide
Thu -- 08:13 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.4-0.3-0.10.10.40.60.91.11.21.21.31.21.21.11.1110.90.70.60.40.1-0

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 (1,6,7,8)
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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.