Thursday, April26, 2018 L-36.com


Marine Weather and Tides
Rio Hondo, TX

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:55AMSunset 8:01PM Thursday April 26, 2018 1:00 AM CDT (06:00 UTC) Moonrise 4:02PMMoonset 3:58AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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- 955 Pm Cdt Wed Apr 25 2018
Rest of tonight..East winds 5 to 10 knots becoming northeast 10 to 15 knots after midnight. A light chop on the bay building to a moderate chop after midnight. Scattered showers early in the evening, then isolated showers and Thunderstorms after midnight.
Thursday..Northeast winds 10 to 15 knots. A moderate chop on the bay. Isolated showers in the morning.
Thursday night..East winds 5 to 10 knots. A light chop on the bay.
Friday..Northeast 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.
Friday night..East winds 10 to 15 knots becoming southeast 5 to 10 knots after midnight. A moderate chop on the bay subsiding to a light chop after midnight.
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. Slight chance of showers and Thunderstorms.
Saturday night..Southeast winds 5 to 10 knots. A light chop on the bay.
Sunday..Southeast winds 10 to 15 knots. A moderate chop on the bay.
Sunday night..Southeast winds 10 to 15 knots. A moderate chop on the bay.
Monday..Southeast winds 10 to 15 knots. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
Monday night..Southeast winds 10 to 15 knots. A moderate chop on the bay.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 955 Pm Cdt Wed Apr 25 2018
Synopsis..A relatively weak cold front will pass across the lower texas coastal waters tonight. Scattered showers and Thunderstorms will continue into early tonight along the front. While winds and seas may become elevated near any Thunderstorms, small craft advisories are not anticipated.

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 260548 aaa
afdbro
area forecast discussion... Updated
national weather service brownsville tx
1248 am cdt Thu apr 26 2018

Discussion Updated for latest aviation discussion below.

Aviation A dying thunderstorm complex continues to move east
and away from the aerodromes.VFR should be left in the wake of
this complex for the remainder of the overnight hours. Tomorrow,
vfr is also anticipated to prevail as surface high pressure moving
off towards the east causes surface winds to veer, with partly to
mostly cloudy skies.

Prev discussion issued 645 pm cdt Wed apr 25 2018
discussion... Updated for latest aviation discussion below.

Aviation...VFR ceilings continue into late this evening as a cold
front moves toward the rio grande valley. Scattered thunderstorms
are developing along the front into northwestern portions of deep
south texas. While conditions aren't as favorable in the valley,
there is an increasing chance of a few thunderstorms approaching
mfe and hrl late this evening into very early tonight, with
showers reaching bro. MVFR ceilings are expected along the front
after midnight through Thursday morning before conditions slowly
improve. Isolated showers may continue across the lower valley
Thursday morning.

Prev discussion... Issued 330 pm cdt Wed apr 25 2018
short term (tonight through Thursday night): the main forecast
challenge is the advancing cold front and strong weather potential
for tonight. SPC places the upper valley under a marginal risk for
severe weather tonight, which translates to a 5% chance within 25
miles of any given point in the zapata, jim hogg, and starr county
area. Moisture, instability, and lift will be present along the
front, with gusty winds and small hail possible in the stronger
storms that may move into the upper valley from the west this
evening and tonight. An isolated severe storm is not out of the
question for the upper valley, and the threat would then be strong,
gusty winds and large hail. The front is on track to push through
the laredo area and into zapata county around 9 or 10 pm, and will
push through the lower valley in the pre-dawn hours of Thursday,
rain and stronger thunderstorm chances are expected to ease as the
front progresses southeast. The best chance for unsettled weather
and a brief heavy downpour for the lower valley will be right along
the front with gusty winds of 30 to 40 mph possible.

Look for clearing skies Thursday with mild, mainly seasonal high
temperatures in the upper 70s to lower 80s with light northeast
winds. Thursday night temperatures will be in the lower to mid 60s
with light east winds under partly cloudy skies.

Long term (Friday through Wednesday): the 500 mb pattern over the
lower 48 states will be dominated by deep troffing closed lows on
the east and west coasts this weekend. This will in turn maintain
pretty decent ridging over the south central plains states through
sun. However, the east coast trough will eventually drift
eastwards early next week while the closed 500 mb low over the
pacific NW will open up and elongate out from SW to NE through
midweek next week. This will shift the 500 mb ridging towards the
east coast with the south central plains states remaining on the
western fringes of ridging. As this broad mid level trough axis
digs to the southeast, a cold front will push into the central and
southern plains states late in the longer range forecast period
possibly setting up for a FROPA late next week. Until then expect
near to below normal temps to prevail for this weekend, with above
normal temps developing next week as the low level waa
strengthens.

Some marginal moisture values remain pooled under the 500 mb
ridge axis over NE mexico edging into southern tx. This will
likely interact with the diurnal heating to potentially fire up
some isold conv for much of the longer range period. No widespread
significant rains are expected at this time.

Run to run gfs ECMWF consistency is pretty decent for both the
temp and pop trends. The ECMWF has a a warmer and drier bias
versus the gfs. Will maintain a general model blend for the longer
range outlook.

Marine tonight through Thursday night: light to moderate southeast
winds will turn to northeast tonight after the passage of a cold
front. Light to moderate northeast to east winds will then prevail
through Thursday night. Showers and isolated thunderstorms may
develop over the marine areas tonight as the cold front moves
through, possibly superimposing strong, gusty winds and locally
rough seas on the forecast. Small craft advisory conditions will
not develop on the broader scale, however.

Friday through Monday night: weak to moderate surface ridging will
remain centered over the gulf of mexico which will likely maintain
light to moderate SE low level flow across the lower tx marine
locations throughout the weekend. However, the pgf appears to
strengthen Mon and tues which could push the bay and gulf
conditions up close to SCA levels late in the forecast period.

Bro watches warnings advisories None.

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
RLIT2 13 mi48 min E 18 G 22 74°F 74°F1015.2 hPa
PMNT2 21 mi42 min 73°F 77°F1015.8 hPa
PTIT2 - 8779770 - Port Isabel, TX 22 mi42 min ESE 11 G 13 70°F 77°F1015.4 hPa
PCGT2 - 8779748 - South Padre Island CGS, TX 23 mi42 min ESE 13 G 17 72°F 1015.8 hPa
BZST2 24 mi48 min E 18 G 22 73°F 81°F1014.5 hPa
RSJT2 - 8777812 - Rincon del San Jose; Potrero Lopeno SW, TX 38 mi42 min ESE 13 G 15 72°F 78°F1015.3 hPa

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 mi68 minS 1010.00 miMostly Cloudy67°F64°F93%1015.6 hPa
Port Isabel, Port Isabel-Cameron County Airport, TX12 mi67 minSSE 14 G 2410.00 miLight Rain68°F63°F84%1015.6 hPa
Weslaco, Mid Valley Airport, TX24 mi70 minESE 11 G 1610.00 miMostly Cloudy0°F0°F%1014.6 hPa

Wind History from HRL (wind in knots)
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Last 24hrSE5SE4SE4E6SE7SE5E4SE14SE14SE16S17
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E15E15E12E12NE9S13S10SE9
1 day agoS3CalmCalmSE4E3NE5E7E6E9SE8E11
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2 days agoNE6NE3CalmW3CalmNE5NE4E8E13E14E12E13E9
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Tide / Current Tables for Port Isabel, Texas
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Port Isabel
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Thu -- 01:21 AM CDT     0.98 feet High Tide
Thu -- 04:56 AM CDT     Moonset
Thu -- 06:55 AM CDT     Sunrise
Thu -- 07:44 AM CDT     0.45 feet Low Tide
Thu -- 02:25 PM CDT     1.15 feet High Tide
Thu -- 05:01 PM CDT     Moonrise
Thu -- 07:57 PM CDT     Sunset
Thu -- 08:48 PM CDT     0.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.9110.90.80.70.60.50.50.50.60.811.11.11.11.110.80.70.60.60.70.7

Tide / Current Tables for Queen Isabella Causeway (west end), Texas
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Queen Isabella Causeway (west end)
Click for Map
Thu -- 01:10 AM CDT     0.94 feet High Tide
Thu -- 04:56 AM CDT     Moonset
Thu -- 06:55 AM CDT     Sunrise
Thu -- 07:31 AM CDT     0.28 feet Low Tide
Thu -- 02:38 PM CDT     1.04 feet High Tide
Thu -- 05:01 PM CDT     Moonrise
Thu -- 07:57 PM CDT     Sunset
Thu -- 08:21 PM CDT     0.41 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.90.90.80.70.50.40.30.30.40.50.60.80.91110.80.60.50.40.40.50.6

Weather Map and Satellite Images
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wmap_A
GOES Local Image of SouthCentralPlains    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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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.