Saturday, September23, 2017 L-36.com


Marine Weather and Tides
Rio Hondo, 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 7:19AMSunset 7:26PM Saturday September 23, 2017 1:21 PM CDT (18:21 UTC) Moonrise 9:23AMMoonset 8:58PM Illumination 10% Phase: Waxing Crescent; Moon at 3 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- 1032 Am Cdt Sat Sep 23 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.
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.
Sunday..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.
Sunday 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.
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. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
Tuesday..Southeast winds 10 to 15 knots. A moderate chop on the bay. 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. Slight 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.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 1032 Am Cdt Sat Sep 23 2017
Synopsis..Light to moderate southeast winds and low seas of generally 2 to 4 feet over the gulf waters will continue through much of the forecast period as surface high pressure remains over the northeast gulf. Showers and Thunderstorms will also be possible each day as abundant moisture remains 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 Rio Hondo, TX
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location: 26.26, -97.53     debug


Area Discussion for - Brownsville, TX
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Fxus64 kbro 231738 aab
afdbro
area forecast discussion... Updated
national weather service brownsville tx
1238 pm cdt Sat sep 23 2017

Discussion Updated for latest aviation discussion below.

Aviation Radar and satellite imagery indicate showers are
trying to develop, but most of the activity is over the marine
areas currently. Expect scattered showers and possibly a
thunderstorm later today with brief MVFR ceilings if they manage
to pass over the local airports. Otherwise,VFR conditions will
prevail the next 24 hours with a few moderate wind gusts through
sunset. Overnight an isolated shower will be possible with winds
below 10 knots.

Prev discussion issued 644 am cdt Sat sep 23 2017
discussion... Updated for latest aviation discussion below.

Aviation... IR satl imagery early this morning shows only some sct
clds over the rgv with thicker cld cover evident to our west over
northeastern mexico. Kbro radar indicates only some isold marine
conv firing to our east moving northwest. Daytime heating in
combination with the afternoon sea breeze may result in some more
sct conv along with lower ceilings. This may result in some MVFR
ceilings this afternoon and early this evening. However expect
overallVFR conditions to prevail for the rgv TAF sites.

Prev discussion... Issued 417 am cdt Sat sep 23 2017
short term (now through Sunday): the 500 mb ridging currently over
the central and northeastern u.S. Will be eroded by a deep closed
moving in from the western states and a weaker closed low drifting
west over the southeastern states. As the 500 mb ridging gradually
breaks over the rgv... Day time heating will help drive isold sct
conv throughout the weekend. The 00z bro sounding indicates that
overall moisture and instability is a little limited with an mucape
of 1860 j kg and a pwat of 1.94 inches. The GFS mos pops are the
wettest versus the nam ECMWF numbers. Will lean towards the wetter
gfs pops as the rgv has seen pretty decent conv over the last couple
of days. The latest kbro radar imagery also indicates some conv over
the gulf waters trying to edge into the inland areas early this
morning.

Will go close to persistence for temps around the rgv as short term
guidance is in reasonable agreement for highs lows.

Long term (Sunday night through Friday): deep south texas will
continue to be on the western side of a mid-level ridge over the
central gulf and a mid-level trough over the western conus. Surface
high pressure across the southeast united states extending into the
northern gulf of mexico will prevail Sunday night and Monday. A cold
front is expected to move into northern texas on Tuesday and
gradually move south through the week. Deep tropical moisture is
expected to pool ahead and along the frontal boundary. The latest
gfs ECMWF suggests the cold front will move into deep south texas by
late week. Precipitable water values near or above two inches will
support isolated to scattered showers and thunderstorms through most
of the period. Rain chances diminish by Friday night as drier air
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 high dewpoints. Near to slightly below normal temperatures
are expected Friday and Friday night in the wake of the front.

Marine (now through Sunday): broad surface ridging sprawled over
the eastern states will maintain light to moderate winds and seas
across the lower tx coastline. Expect e-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. No SCA conditions
expected through Sunday.

Sunday night through Wednesday night: surface high pressure
across the northeast gulf of mexico will maintain light to
moderate southeast flow and low to moderate seas across the lower
texas coastal waters through midweek. A cold front will approach
deep south texas and the adjacent coastal waters by late in the
week which will result in higher winds and seas. Small craft
exercise cautions conditions likely in the wake of the front.

Isolated to scattered showers and thunderstorms will also be
possible at times through the period.

Bro watches warnings advisories
Tx... None.

Gm... None.

This product is also available on the web at:
http: weather.Gov rgv
65 59


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RLIT2 13 mi51 min E 11 G 12 84°F 84°F1011.2 hPa
PMNT2 21 mi51 min 85°F 85°F1011.3 hPa
PTIT2 - 8779770 - Port Isabel, TX 22 mi51 min ESE 11 G 14 85°F 84°F1011.2 hPa
PCGT2 - 8779748 - South Padre Island CGS, TX 23 mi51 min SE 9.9 G 12 84°F 1011.6 hPa
BZST2 24 mi51 min ESE 11 G 12 83°F 1010.4 hPa
RSJT2 - 8777812 - Rincon del San Jose; Potrero Lopeno SW, TX 38 mi51 min ESE 12 G 15 85°F 84°F1011.2 hPa

Wind History for Port Isabel, TX
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SE16
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Harlingen, Rio Grande Valley International Airport, TX8 mi29 minE 12 G 1710.00 miA Few Clouds95°F69°F44%1010.2 hPa
Weslaco, Mid Valley Airport, TX24 mi26 minSE 710.00 miPartly Cloudy91°F70°F51%1010.2 hPa

Wind History from HRL (wind in knots)
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Last 24hrSE11SE18
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1 day agoSE16
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SE13SE11SE10SE11SE7SE6SE5SE5E6SE9SE10SE5SE10SE14SE12
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2 days agoS12
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G22

Tide / Current Tables for Port Isabel, Texas
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Port Isabel
Click for Map
Sat -- 12:51 AM CDT     1.09 feet Low Tide
Sat -- 05:03 AM CDT     1.25 feet High Tide
Sat -- 07:17 AM CDT     Sunrise
Sat -- 10:21 AM CDT     Moonrise
Sat -- 11:53 AM CDT     0.57 feet Low Tide
Sat -- 07:23 PM CDT     Sunset
Sat -- 07:58 PM CDT     1.50 feet High Tide
Sat -- 09:57 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.11.11.21.21.21.21.110.80.70.60.60.60.70.91.11.31.41.51.51.51.41.3

Tide / Current Tables for Queen Isabella Causeway (west end), Texas
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Queen Isabella Causeway (west end)
Click for Map
Sat -- 12:46 AM CDT     0.80 feet Low Tide
Sat -- 05:08 AM CDT     1.16 feet High Tide
Sat -- 07:17 AM CDT     Sunrise
Sat -- 10:21 AM CDT     Moonrise
Sat -- 11:53 AM CDT     0.40 feet Low Tide
Sat -- 07:23 PM CDT     Sunset
Sat -- 08:13 PM CDT     1.44 feet High Tide
Sat -- 09:56 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.80.911.11.21.110.90.70.60.40.40.40.60.70.91.11.31.41.41.41.31.1

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 (14,3,4,5)
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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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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.