Thursday, March30, 2017 L-36.com


Marine Weather and Tides
Rio Hondo, 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 7:21AMSunset 7:48PM Thursday March 30, 2017 11:37 AM CDT (16:37 UTC) Moonrise 8:27AMMoonset 9:46PM Illumination 11% 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- 1028 Am Cdt Thu Mar 30 2017
.small craft advisory for winds in effect until 1 pm cdt this afternoon...
Today..North winds 18 to 23 knots diminishing to 11 to 16 knots early in the afternoon, then becoming northeast 7 to 11 knots late. Rough on the bay subsiding to a moderate chop early in the afternoon, then subsiding to a light chop late.
Tonight..Southeast winds 7 to 12 knots becoming south 11 to 14 knots early in the morning. A light chop on the bay increasing to a moderate chop early in the morning.
Friday..South winds 12 to 16 knots becoming southeast 15 to 20 knots in the afternoon. A moderate chop on the bay increasing to choppy in the afternoon.
Friday night..Southeast winds 14 to 19 knots. Choppy on the bay.
Saturday..Southeast winds 13 to 17 knots. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
Saturday night..Southeast winds 11 to 16 knots. A moderate chop on the bay.
Sunday..South winds 9 to 14 knots. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
Sunday night..North winds 7 to 12 knots. A light chop on the bay. Slight chance of showers and Thunderstorms.
Monday..North winds 7 to 11 knots. A light chop on the bay.
Monday night..Southeast winds 9 to 13 knots. A moderate chop on the bay.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 1028 Am Cdt Thu Mar 30 2017
Synopsis..Strong north winds in the wake of a weak cold front this morning will continue through the early afternoon hours. Surface high pressure will settle across deep south texas this afternoon and this will allow the pressure gradient to weaken across the lower texas coast this afternoon. Winds will veer to the east tonight and then increase out of the south Friday as low pressure develops across west texas and high pressure over the western gulf of mexico moves eastward allowing the pressure gradient to increase across the lower texas coast.

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 301130 aaa
afdbro
area forecast discussion... Updated
national weather service brownsville tx
630 am cdt Thu mar 30 2017

Discussion Updated for latest aviation discussion below.

Aviation Satellite images and surface observations indicate
some low clouds across the coastal sections of the CWA with high
clouds across the rest of the cwa. Ceilings were near 1300ft at
kpil. Visibilities were near 6sm with fog at kpil. ExpectVFR
conditions to prevail across the rio grande valley and northern
ranchlands today as high pressure builds into the area in the wake
of a weak cold front moving through extreme southeast portions of
the CWA this morning.

Prev discussion /issued 404 am cdt Thu mar 30 2017/
short term (today through Friday): a weak cold front will move
through the CWA this morning reinforcing the drier air across the
western portions as well as bring slightly cooler air into the
area as high pressure builds across deep south texas in the wake
of the front. Isolated convection across northeast mexico may
approach the extreme southeast portions of the CWA this morning
before the front moves through but rain chances will be confined
to offshore waters of the lower tx coast this morning.

Temperatures will be near normal this afternoon and tonight before
returning to above normal Friday as the surface ridge moves
eastward and low pressure develops across west tx Friday. Some
patchy fog may develop across the lower rio grande valley late
tonight into early Friday morning.

Long term (Friday night through Wednesday): models remain
consistent with the local effects of the next large h5 trough
sweeping across the us. Models still show that although midlevel
forcing will be considerable, a punch of dry air will wrap into
the region beforehand, quickly strengthening the capping
inversion. There may be just enough moisture in the northern
ranchlands Sunday to spark a few showers, but steering flow would
direct them quickly to the northeast, with minimal accumulation.

Once this trough departs, h5 ridge returns quickly for Monday and
Tuesday, before the next fast-moving trough sweeps out of the
rockies. Highs will remain above normal through the period,
reaching the low to mid 90s each afternoon.

Marine: today through Friday: seas were near 7 feet with east-
southeast winds near 2 knots at buoy020 early this morning. Winds
will shift to the northwest and increase across the coastal waters
this morning as a weak cold front moves offshore the lower tx
coast. Will go ahead and issue a small craft advisory for the
laguna madre this morning through this afternoon and for the
offshore waters this morning through this evening as strong
northwest winds develop this morning in the wake of the front.

Winds and seas will gradually diminish this afternoon as high
pressure settles across deep south texas. This will allow the
pressure gradient to weaken across the lower tx coast this
afternoon. Light to moderate north winds this afternoon will veer
to the east and diminish tonight as the surface ridge moves
eastward across the western gulf of mexico. Winds will veer to the
south and increase Friday as low pressure develops across west tx
and high pressure over the western gulf moves eastward allowing
the pressure gradient to increase across the lower tx coast.

Saturday through Monday: southeast flow will gradually decrease
over the weekend as a weak front drifts into the northwest gulf.

Winds will be generally in the 10 to 15 knots range. Seas will
remain agitated on Saturday, reaching near 7 feet offshore.

Improved conditions expected Sunday as the front drifts through,
with winds shifting to the north around 10 knots, allowing seas to
decrease to 4 to 5 feet in the afternoon. Winds will be lighter
and variable on Monday as the southeasterly flow slowly returns to
the region. The lighter winds will reduce the effects of the gulf
waves, which will decrease to 2 to 3 feet.

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

Gm... Small craft advisory for winds until 1 pm cdt this afternoon for
gmz130-132-135.

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

This product is also available on the web at:
http://weather.Gov/rgv
61/64/56


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RLIT2 13 mi50 min NNW 18 G 25 75°F1013.8 hPa
PMNT2 21 mi50 min 69°F 77°F1013.9 hPa
PTIT2 - 8779770 - Port Isabel, TX 22 mi50 min N 19 G 23 69°F 77°F1013.3 hPa
PCGT2 - 8779748 - South Padre Island CGS, TX 23 mi50 min N 21 G 26 68°F 1013.8 hPa
42044 - PS-1126 TABS J 26 mi98 min NNW 21 G 27 68°F 75°F1013.5 hPa (+3.5)56°F
RSJT2 - 8777812 - Rincon del San Jose; Potrero Lopeno SW, TX 38 mi50 min N 19 G 22 66°F 74°F1013.5 hPa

Wind History for Port Isabel, TX
(wind in knots)    EDIT      (on/off)   Help
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Last
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SE8
S6
G10
S7
G10
S6
G11
S3
S3
G6
W2
N2
G7
NE1
G4
NE1
N3
G6
N1
N2
--
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N3
N6
G9
N10
G13
N8
G11
N13
G17
N14
G19
N19
G25
N16
G23
N19
G25
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SE18
G22
SE16
G21
SE18
G22
SE17
G21
SE19
G24
SE19
G25
SE16
G20
SE16
SE18
G24
SE18
G24
SE19
G26
S19
G24
SE20
G27
SE21
G27
SE16
G22
SE20
SE20
G25
SE16
G21
SE17
G24
SE18
G23
S12
G16
S10
G13
S9
G12
S11
G15
2 days
ago
SE12
G15
SE11
G16
SE15
G19
S8
G17
S7
G11
S5
S4
G7
S4
G7
S3
G6
S5
S5
G8
S6
G10
S8
G12
SE10
G13
SE13
G16
SE11
G14
SE10
G13
SE11
SE10
S10
G14
SE12
G15
SE14
G20
SE16
G20
S12
G18

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Harlingen, Rio Grande Valley International Airport, TX8 mi46 minN 1610.00 miFair74°F48°F40%1013.6 hPa
Port Isabel, Port Isabel-Cameron County Airport, TX12 mi45 minNNW 1510.00 miFair74°F48°F41%1013.4 hPa
Weslaco, Mid Valley Airport, TX24 mi43 minN 157.00 miFair73°F45°F37%1013.9 hPa

Wind History from HRL (wind in knots)
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Last 24hrNW5N6NE14NE22
G26
NE22
G29
NE18
G26
NE16NE16NE8NE5E7E7CalmN4CalmNW8N8NW4NW8N15N16NW18
G24
N18
G24
N16
1 day agoSE22
G31
S23
G30
SE22
G30
SE27
G33
SE23
G30
SE20
G28
SE22
G27
SE21
G25
SE17
G23
SE15
G23
S16
G21
S21
G33
S22
G30
S20
G31
S20
G29
SE20
G29
S20
G29
S20
G27
S21
G27
S15SW10SW9SW7SW9
2 days agoS14S14
G21
S10S11
G17
S10SE10SE12E18SE13E9SE8SE9SE9SE11SE12SE10SE10SE11SE11SE12SE8SE11SE21
G27
SE18
G31

Tide / Current Tables for Port Isabel, Texas
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Port Isabel
Click for Map
Thu -- 07:20 AM CDT     1.34 feet High Tide
Thu -- 07:21 AM CDT     Sunrise
Thu -- 09:26 AM CDT     Moonrise
Thu -- 01:26 PM CDT     0.93 feet Low Tide
Thu -- 04:21 PM CDT     0.99 feet High Tide
Thu -- 07:44 PM CDT     Sunset
Thu -- 10:43 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.20.40.70.91.11.31.31.31.31.21.110.90.91110.90.80.60.40.1-0

Tide / Current Tables for Queen Isabella Causeway (west end), Texas
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Queen Isabella Causeway (west end)
Click for Map
Thu -- 07:20 AM CDT     1.14 feet High Tide
Thu -- 07:21 AM CDT     Sunrise
Thu -- 09:26 AM CDT     Moonrise
Thu -- 01:08 PM CDT     0.54 feet Low Tide
Thu -- 04:33 PM CDT     0.76 feet High Tide
Thu -- 07:44 PM CDT     Sunset
Thu -- 10:43 PM CDT     Moonset
Thu -- 11:58 PM CDT     -0.14 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
00.10.30.50.70.91.11.11.110.80.70.60.50.60.70.70.80.70.60.40.20-0.1

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 (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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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.