Wednesday, February20, 2019 L-36.com


Marine Weather and Tides
Rio Hondo, 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 7:01AMSunset 6:27PM Wednesday February 20, 2019 1:58 AM CST (07:58 UTC) Moonrise 7:52PMMoonset 7:58AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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- 909 Pm Cst Tue Feb 19 2019
.small craft should exercise caution late tonight...
Rest of tonight..North winds 10 to 15 knots increasing to 15 to 20 knots after midnight. A moderate chop on the bay building to choppy after midnight. Areas of fog through the night. Scattered rain showers after midnight.
Wednesday..North winds 15 to 20 knots diminishing to 10 to 15 knots in the afternoon. Choppy on the bay subsiding to a moderate chop in the afternoon. Scattered rain showers in the morning.
Wednesday night..Northeast 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. Scattered rain showers after midnight.
Thursday..North winds 5 to 10 knots. A light chop on the bay. Chance of rain showers.
Thursday night..Northeast winds 5 to 10 knots shifting southeast after midnight. A light chop on the bay. Slight chance of showers.
Friday..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. Slight chance of showers in the afternoon.
Friday night..Southeast winds 10 to 15 knots. A moderate chop on the bay.
Saturday..Southwest winds 10 to 15 knots becoming northwest 5 to 10 knots in the afternoon. A moderate chop on the bay subsiding to a light chop in the afternoon. Slight chance of showers.
Saturday night..Northeast winds 5 to 10 knots. A light chop on the bay. Slight chance of showers.
Sunday..Northeast winds 5 to 10 knots. A light chop on the bay. Slight chance of showers.
Sunday night..East winds 5 to 10 knots. A light chop on the bay. Chance of showers.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 909 Pm Cst Tue Feb 19 2019
Synopsis..Elevated seas will continue across the gulf through this evening as a coastal low moves north across the lower texas gulf waters. Moderate north to northeast winds and continued elevated seas will be possible through late tonight into Wednesday as a weak front pushes through. Stronger southeast to south winds and moderate seas will develop Friday night into Saturday ahead of a cold front this weekend.


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 200453 aab
afdbro
area forecast discussion... Updated
national weather service brownsville tx
1053 pm cst Tue feb 19 2019

Discussion Updated for latest aviation discussion below.

Aviation Satellite images and surface observations indicate low
clouds with light rain and mist across the CWA late tonight.

Ceilings were near 300ft at most local aerodromes to near 1300ft
at kbks. Visibilities were near 3sm with light rain mist at most local
aerodromes to near 6sm with light rain mist at kbro. Expect ifr to
lifr conditions across the rio grande valley the rest of tonight
through Wed morning before drier air filters into the area
tomorrow in the wake of a weak cold front moving through deep
south texas late tonight. Expect ceilings visibilities to improve
late Wed morning as drier air filters into the cwa.

Prev discussion issued 535 pm cst Tue feb 19 2019
discussion... Updated for latest aviation discussion below.

Aviation... Satellite images and surface observations indicate low
clouds and mist across the CWA early this evening. Ceilings were
near 300ft at kpil and khbv to near 1200ft at kbks. Visibilities
were near 1sm with mist at khbv to near 5sm with mist at kebg and
kapy. Expect ifr to lifr conditions across the rio grande valley
tonight into early Wed morning as the coastal low across the
northwest gulf of mexico moves northward and a weak cold front
moves across the CWA tonight. Ceilings and visibilities will
improve late Wed morning into early Wed afternoon as drier air
filters into the area.

Prev discussion... Issued 256 pm cst Tue feb 19 2019
short term (tonight through Wednesday night): a low pressure area
will move north along the lower texas coast through this evening,
with a surge of high pressure moving south into the back side of
the low as a cold front over land, which will push offshore after
midnight tonight. Low clouds with light rain and or drizzle with
fog will develop overnight and into Wednesday morning, especially
near the coast, but drier air will move in by Wednesday afternoon,
clearing the area out from west to east, except possibly for the
southeast corner of the cwa, the lower valley, with a temporary
end to rain chances over land. However, by Wednesday night this
latest front will itself turn into a coastal trough and start to
move back up the coast, with increasing clouds Wednesday night,
and a chance of light coastal rain. Lows will be in the 50s
tonight and tomorrow night. High temperatures east will be
suppressed on Wednesday due to the delayed partial clearing, but
high temperatures out west could reach around 70 degrees with
light north winds.

Long term (Thursday through Tuesday): long term forecast is
dominated by broad trough across the western us and modest ridge
just off the east coast. This keeps south texas in a general
southwest flow pattern aloft, bringing impulses through the
region, mainly just increasing cloud cover at times. With the main
storm patter away from texas, the remainder of the week will see
the dissipation of the coastal trough and return of southeast flow
at the surface. This will prompt a warming trend, with highs
gradually returning to the 80s. The only larger system expected
looks to be on Saturday, as a larger piece of the trough sweeps
across the us, bringing a considerable pacific front through.

Timing still expected early Saturday morning, but lack of llvl
moisture and better midlevel energy remaining further north, the
front will have a hard time sparking shower activity. Have kept
some modest chances for later Saturday, but trends have been
downward recently, so confidence is not high. The southwest flow
aloft will stall the tail end of the front offshore Sunday,
transitioning to yet another coastal trough, continuing the mostly
cloudy pattern, and bringing a better chance for light rain and
drizzle on Monday. After this, models completely diverge, with one
bringing in another front Tuesday, while another has no front in
the entire state.

Marine:
now through Wednesday night: swells wave heights are slowly coming
down this afternoon as a low pressure area slash warm front moves
back north along the coast. Marine fog may be an issue near the
coast until north winds pick up late tonight. High pressure will
build south tonight with north winds increasing after midnight,
along with building seas. Low end small craft advisory conditions
will be possible Wednesday into Wednesday evening. Winds will veer
to east and weaken Wednesday night as a coastal trough sets up
again along the northeast mexican coast and juts north into the
lower texas coastal waters.

Thursday through Sunday: weak coastal trough just off the
coastline Thursday keeps winds generally light and variable. The
trough finally dissipates, allowing modest southeast flow to
resume for the day Friday. Saturday the next cold front sweeps
into the northwest gulf, with a gradual shift to northwest winds.

Airmass behind this front is not a cold airmass, so winds behind
the front remain modest. Winds gradually shift northeasterly on
Sunday as the next coastal trough begins to wrap up to the
southeast.

Bro watches warnings advisories
Tx... None.

Gm... None.

This product is also available on the web at:
http: weather.Gov rgv
61 55


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RLIT2 13 mi58 min NNW 18 G 21 55°F 63°F1010.7 hPa (+1.0)
PMNT2 21 mi58 min 52°F 67°F1011 hPa (+0.9)
PTIT2 - 8779770 - Port Isabel, TX 22 mi58 min NNW 15 G 19 55°F 62°F1010 hPa (+0.6)
PCGT2 - 8779748 - South Padre Island CGS, TX 23 mi58 min N 9.9 G 19 56°F 1010.3 hPa (+0.6)
BZST2 24 mi58 min N 20 G 24 56°F 61°F1009.2 hPa (+0.6)
RSJT2 - 8777812 - Rincon del San Jose; Potrero Lopeno SW, TX 38 mi58 min N 15 G 19 51°F 60°F1011.2 hPa (+1.2)

Wind History for Port Isabel, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Harlingen, Rio Grande Valley International Airport, TX8 mi66 minN 144.00 miLight Rain Fog/Mist51°F48°F92%1010.9 hPa
Port Isabel, Port Isabel-Cameron County Airport, TX12 mi65 minN 146.00 miFog/Mist54°F52°F93%1010.2 hPa

Wind History from HRL (wind in knots)
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Last 24hrN9N10N10N9N8N9NW9NW10NW10N12NW9NW11N11N9N6N6N8N7N6N3NE5N9N10N14
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2 days agoS11SE9S9SE6SE6E4E5SE3N5N7N15NE17N14NE16N17NE16NE11
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Tide / Current Tables for Port Isabel, Texas
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Port Isabel
Click for Map
Wed -- 01:46 AM CST     1.02 feet High Tide
Wed -- 07:00 AM CST     Sunrise
Wed -- 07:55 AM CST     Moonset
Wed -- 10:10 AM CST     -0.38 feet Low Tide
Wed -- 05:52 PM CST     0.97 feet High Tide
Wed -- 06:25 PM CST     Sunset
Wed -- 07:51 PM CST     Moonrise
Wed -- 10:34 PM CST     0.72 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11110.90.70.40.2-0.1-0.3-0.4-0.3-0.20.10.30.60.80.910.90.90.80.70.7

Tide / Current Tables for Port Isabel, Texas (2)
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Port Isabel
Click for Map
Wed -- 04:22 AM CST     1.02 feet High Tide
Wed -- 07:00 AM CST     Sunrise
Wed -- 07:55 AM CST     Moonset
Wed -- 09:55 AM CST     -0.59 feet Low Tide
Wed -- 06:25 PM CST     Sunset
Wed -- 06:54 PM CST     0.93 feet High Tide
Wed -- 07:51 PM CST     Moonrise
Wed -- 10:14 PM CST     0.41 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.80.91110.70.3-0.1-0.5-0.6-0.5-0.4-0.20.10.30.60.80.90.90.80.60.40.4

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.
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Wind Forecast for Brownsville, TX (2,6,7,8)
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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.