Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Port Isabel, TX

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:22AMSunset 7:46PM Tuesday March 28, 2017 11:00 AM CDT (16:00 UTC) Moonrise 6:56AMMoonset 7:36PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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- 1025 Am Cdt Tue Mar 28 2017
.small craft advisory for winds in effect through Wednesday morning...
Rest of today..Southeast winds 17 to 21 knots. Choppy on the bay.
Tonight..Southeast winds 18 to 22 knots becoming south 21 to 26 knots with gusts to around 30 knots in the late evening and overnight. Rough on the bay.
Wednesday..South winds 15 to 20 knots diminishing to 11 to 16 knots late in the morning, then shifting southeast 10 to 15 knots in the afternoon. Choppy on the bay subsiding to a moderate chop in the late morning and afternoon.
Wednesday night..Southeast winds 9 to 14 knots becoming southwest 7 to 10 knots early in the morning. A moderate chop on the bay subsiding to a light chop early in the morning. Slight chance of showers and Thunderstorms after midnight.
Thursday..Northwest winds 13 to 18 knots becoming north 9 to 14 knots. Choppy on the bay subsiding to a moderate chop. Slight chance of showers and Thunderstorms.
Thursday night..North winds 7 to 10 knots shifting south 7 to 9 knots early in the morning. A light chop on the bay.
Friday..South winds 12 to 17 knots. A moderate chop on the bay.
Friday night..Southeast winds 14 to 17 knots. Choppy on the bay.
Saturday..Southeast winds 15 to 19 knots. Choppy on the bay.
Saturday night..Southeast winds 13 to 17 knots. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 1025 Am Cdt Tue Mar 28 2017
Synopsis..The interaction between high pressure and low pressure will produce small craft advisory conditions along the lower texas coast today through tomorrow. Improved winds and seas will then occur for the second half of this week...with a return to more adverse marine conditions during the weekend.

7 Day Forecast for Marine Location Near Port Isabel, TX
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location: 26.06, -97.22     debug


Area Discussion for - Brownsville, TX
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Fxus64 kbro 281135
afdbro
area forecast discussion... Updated
national weather service brownsville tx
635 am cdt Tue mar 28 2017

Discussion Updated for latest aviation discussion below.

Aviation Only minor adjustments made to the previous set of
tafs, mainly for cloud coverage and height. FullVFR will develop
and prevail after sunrise this morning with breezy surface winds
with windy gusts. A slight reduction in wind speeds is expected
for tonight, but breezy winds will continue as surface high
pressure over the gulf of mexico interacts with low pressure in
the central plains. MVFR ceilings are forecast for tonight in
tandem with the breezy onshore flow.

Prev discussion /issued 347 am cdt Tue mar 28 2017/
short term (today through Wednesday): closed 500 mb low pressure and
a surface low pressure system will move in tandem out of the desert
southwest and into northern texas during the forecast period. A weak
cold front extending from the surface low pressure system will move
from west to east through deep south texas and the rio grande valley
during the pre-dawn hours of Wednesday before becoming stationary
along the lower texas coast late Wednesday afternoon. Despite the
frontal passage, no precipitation is anticipated, and temperatures
will prevail at well above normal levels. Surface winds will near
wind advisory criteria today due to an enhanced pressure gradient,
but no advisory is anticipated to be needed.

Long term (Wednesday night through Monday): 500mb low/trough
across texas panhandle/west tx Wednesday will provide strong
convection across portions of east tx and bring a weak cold front
across the CWA Wed night/thurs morning providing a slight chance
of showers and thunderstorms across the area. Subsidence will
increase across south tx Thursday from west to east as the upper
level trough across the state moves eastward. A 500mb ridge across
the southern plains Friday will continue to provide subsidence
across the area before a 500mb low/trough moves into the southwest
united states/northern mexico Saturday. Moisture will increase
across portions of the state Sat night into Sunday and this will
provide a better chance of showers and thunderstorms for the cwa... Mainly
across west and southwest tx Sunday and portions of south and
east tx Sun night into Monday... As the upper level low/trough
moves eastward across southwest tx Monday.

Marine (now through Wednesday): buoy 42020 reported south-southeast
winds around 14 knots gusting to around 16 knots with seas slightly
under 5 feet with a period of 7 seconds at 03 cdt/08 utc. Small
craft advisories will be in effect for all or portions of the lower
texas coastal waters today through tomorrow due to the interaction
between high pressure over the gulf of mexico and low pressure
moving into the central plains.

Wednesday night through Saturday... Light to moderate southeast to
south winds will prevail across the coastal waters Wed night
before a weak cold front moves offshore the lower texas coast
Thursday morning. Winds will shift to the northwest and increase
in the wake of the front and small craft advisories may be needed
for the offshore waters thurs morning through thurs afternoon.

Moderate to strong northwest winds Thursday will diminish thurs
night and veer to the northeast. Winds will continue to veer to
the southeast and south Friday as surface high pressure across the
western gulf of mexico moves eastward. The pressure gradient is
expected to increase across the lower tx coast Saturday with low
pressure deepening across the tx panhandle. Moderate to strong
southeast will prevail across the coastal waters Saturday and
small craft advisories may be needed for the laguna madre and
offshore waters.

Bro watches/warnings/advisories
Tx... None.

Gm... Small craft advisory for winds from 11 am this morning to 8 am
cdt Wednesday for gmz130-132-135.

Small craft advisory until 7 pm cdt Wednesday for gmz150-155-170-
175.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PTIT2 - 8779770 - Port Isabel, TX 0 mi43 min SSE 16 G 22 77°F 76°F1009.3 hPa
PCGT2 - 8779748 - South Padre Island CGS, TX 3 mi43 min SSE 18 G 22 76°F 1009.7 hPa
42044 - PS-1126 TABS J 13 mi151 min SSE 16 G 18 74°F 75°F1009.1 hPa71°F
RLIT2 14 mi43 min SE 20 G 24 75°F1009.3 hPa
PMNT2 36 mi43 min 77°F 77°F1009.1 hPa

Wind History for Port Isabel, TX
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SE11
G15
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G28
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G27
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G17
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G17

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Isabel, Port Isabel-Cameron County Airport, TX9 mi68 minSSE 21 G 259.00 miA Few Clouds and Breezy81°F71°F72%1008.9 hPa
Brownsville, Brownsville / South Padre Island International Airport, TX16 mi68 minSSE 20 G 2810.00 miFair and Breezy80°F71°F74%1009 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 Port Isabel, Texas
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Port Isabel
Click for Map
Tue -- 04:44 AM CDT     1.19 feet High Tide
Tue -- 07:23 AM CDT     Sunrise
Tue -- 07:56 AM CDT     Moonrise
Tue -- 11:15 AM CDT     0.52 feet Low Tide
Tue -- 04:30 PM CDT     0.94 feet High Tide
Tue -- 07:44 PM CDT     Sunset
Tue -- 08:35 PM CDT     Moonset
Tue -- 10:37 PM CDT     0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.80.91.11.21.21.110.90.70.60.50.50.60.70.90.90.90.80.70.50.40.30.3

Tide / Current Tables for Matamoros, Tamaulipas, Mexico
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Matamoros
Click for Map
Tue -- 03:38 AM CST     1.19 feet High Tide
Tue -- 06:25 AM CST     Sunrise
Tue -- 06:57 AM CST     Moonrise
Tue -- 09:46 AM CST     0.38 feet Low Tide
Tue -- 03:35 PM CST     0.94 feet High Tide
Tue -- 06:45 PM CST     Sunset
Tue -- 07:36 PM CST     Moonset
Tue -- 09:32 PM CST     0.16 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.91.11.21.21.10.90.70.50.40.40.40.60.70.80.90.90.80.70.50.30.20.20.3

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 (12,3,4,5)
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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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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.