Thursday, February22, 2018 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 6:58AMSunset 6:29PM Thursday February 22, 2018 4:50 PM CST (22:50 UTC) Moonrise 11:32AMMoonset 12:01AM Illumination 52% Phase: First Quarter Moon; Moon at 8 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- 356 Pm Cst Thu Feb 22 2018
Tonight..Northeast winds 5 to 10 knots shifting southeast after midnight. A light chop on the bay. Areas of fog. Isolated rain showers.
Friday..Southeast winds 10 to 15 knots. A moderate chop on the bay. Areas of fog in the morning.
Friday night..Southeast winds 10 to 15 knots. A moderate chop on the bay.
Saturday..South winds 15 to 20 knots. Choppy on the bay.
Saturday night..South 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. Chance of showers and Thunderstorms.
Sunday..East winds 5 to 10 knots shifting northeast in the afternoon. A light chop on the bay. Chance of showers and slight chance of Thunderstorms.
Sunday night..North winds 5 to 10 knots. A light chop on the bay. Chance of showers.
Monday..Northeast winds 10 to 15 knots. A moderate chop on the bay. Chance of showers.
Monday night..East winds 5 to 10 knots. A light chop on the bay. Chance of showers.
Tuesday..Southeast winds 10 to 15 knots. A moderate chop on the bay. Slight chance of showers.
Tuesday night..Southeast winds 10 to 15 knots. A moderate chop on the bay.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 356 Pm Cst Thu Feb 22 2018
Synopsis..A warm front is expected to move north across deep south texas tonight with southeast winds increasing through Saturday. Winds may become strong enough to warrant a small craft advisory for all or portions of the coastal waters Saturday. Another weak front is expected for later Sunday or early Monday.

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 222137
afdbro
area forecast discussion
national weather service brownsville tx
337 pm cst Thu feb 22 2018
.Short term (tonight through Friday night): cold front which pushed all
the way through the CWA overnight has now pulled up stationary about
40 miles offshore, oriented roughly ssw-nne. Model consensus now
gradually veers the n-nw surface flow to the west of the front back
around to onshore as the night GOES on and weak coastal troughing
ejects toward the ne. NAM (which continues as the primary basis for
the first 24 hours of the forecast) is somewhat slower than the gfs
to do so, but the end result will be that temperatures and dewpoints
will creep up overnight, except over the northern western ranchlands
where temps will hold more steady. Will once again have to watch
convection moving off the higher terrain in mexico in the SW flow
aloft and moving across the rio grande, with potential impacts for
roughly the area east of hwy. 281 i-69c. 12z GFS was pretty bullish
on convection in this area, with a 0.5" precip bullseye over zapata
county driven by a weak wave aloft. Hrrr has been trending weaker
with the convection in this area this evening, and forecast
soundings do not suggest a very favorable environment. But after
the past two nights, will respect the recent trend and maintain
scattered showers and isolated thunder for mainly the western three
counties.

Also will see areas of fog along the coast, with patchy fog forming
further inland with the more soupy airmass returning with the light
onshore flow. Could become dense in spots but won't try to pin down
locations just yet.

Temperatures warm up to back up above normal Friday afternoon as se
flow becomes breezy with a tightened pressure gradient in place.

Most areas will see 80s again during the afternoon, depending on
inland penetration of the warm front. Column rh wanes so basically
nil rain chances during the day. Models indicating another
disturbance may initiate convection over the sierra madre again
Friday night. Most of this activity is progged to pass north, but
could clip zapata county again so will introduce isolated showers in
this timeframe.

.Long term (Saturday through Thursday): a series of deep 500 mb
troughs will dig across the southwestern and south central plains
states this weekend. This will push through another pretty mild
fropa on sun. Surface convergence from the FROPA in addition to
better moisture advection occurring ahead of the front will
increase the conv potential for this upcoming weekend. Longer
range MUCAPE values ahead of the front remain pretty unstable for
both Sat and Sun so will maintain the mention of thunder for both
days. The overall moisture levels after the FROPA never decrease
that much due to pretty limited dry air advection occurring early
next week.

Another deep 500 mb trough will dig down south along the west
coast on Mon and tues which will rebuild the mid level ridging
over the gulf of mex. This will push the old cold front back
northwards as a warm front during the first half of next week with
the better moisture values shifting steadily north away from the
rgv decreasing the conv potential later in the forecast period.

This west coast 500 mb closed low will then open up and will shift
east into the south central plains states late Wed early thurs
which will push another fairly mild cold front through the rgv.

Moisture advection ahead of this next FROPA will be more limited
than the FROPA this weekend and will maintain only some slgt chc
pops towards the end of next week.

Overall model agreement between the GFS and the ECMWF is pretty
reasonable through day 7 in the overall timing of the 500 mb
trough progressions. The biggest disagreement shows up with the
timing and the position of the last trough axis that tracks over
the south central states. The GFS shows the trough tracking much
farther north versus the ecmwf. So overall confidence in the
longer range forecast wording is above average through Wed and
then drops to average for thurs.

.Marine: (now through Friday night): marine weather statement for
visibilities of 1-3 nm in fog remains in effect for the laguna
madre and nearshore gulf waters through midnight tonight. If
conditions worsen this evening, it may be upgraded to a dense fog
advisory. Otherwise, winds will veer onshore tonight as the old
front moves back NW as a warm front. Moderate SE winds kick in
behind the warm front for Friday, possibly increasing to scec
levels Friday night as the pressure gradient continues to tighten.

Seas build to near 6 ft. As well in the 20-60nm gulf waters, with
4-5 ft. Predominating until then.

Saturday through Tuesday night: the pgf ahead of the next fropa
this weekend will increase enough on Sat to possibly push the bay
and gulf conditions up close to SCA levels due to the stronger
s-se low level flow. Once the cold front moves through the region
on Sun the pgf will then weaken somewhat with the post frontal
winds allowing for fairly benign marine conditions to prevail into
mon and tues.

Preliminary point temps pops
Bayview port isabel 61 80 70 83 20 10 10 10
brownsville 61 81 71 85 20 10 10 10
harlingen 61 82 70 87 20 10 10 10
mcallen 59 83 71 90 30 10 10 10
rio grande city 59 78 70 91 30 20 10 10
south padre island 62 76 68 74 20 10 10 10

Bro watches warnings advisories
Tx... None.

Gm... None.

This product is also available on the web at:
http: weather.Gov rgv
short term aviation... 53
long term... 60
graphicast upper air... 65


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RLIT2 13 mi50 min N 8.9 G 11 60°F 70°F1019.7 hPa (-1.9)
PMNT2 21 mi50 min 61°F 71°F1019.7 hPa (-2.1)
PTIT2 - 8779770 - Port Isabel, TX 22 mi50 min N 7 G 9.9 61°F 67°F1019.5 hPa (-1.8)
PCGT2 - 8779748 - South Padre Island CGS, TX 23 mi50 min N 7 G 9.9 59°F 1019.9 hPa (-1.8)
BZST2 24 mi50 min N 11 G 12 58°F 62°F1018.4 hPa (-1.9)
RSJT2 - 8777812 - Rincon del San Jose; Potrero Lopeno SW, TX 38 mi50 min N 8.9 G 9.9 58°F 72°F1019.5 hPa (-2.1)

Wind History for Port Isabel, TX
(wind in knots)    EDIT      (on/off)   Help
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SE9
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SE12
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E3
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SE14
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Harlingen, Rio Grande Valley International Airport, TX8 mi58 minN 510.00 miOvercast62°F57°F86%1019.3 hPa
Port Isabel, Port Isabel-Cameron County Airport, TX12 mi57 minN 87.00 miOvercast64°F57°F81%1019.3 hPa
Weslaco, Mid Valley Airport, TX24 mi55 minNNE 45.00 miFog/Mist57°F54°F90%1020 hPa

Wind History from HRL (wind in knots)
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Last 24hrS16SE16SE10SE9SE10SE9NW12N10NW16N13NW11NW11NW13NW12NW11NW10NW11NW9NW9NW9NW8NW7N6N5
1 day agoS17S15SE15
G23
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S15S9S6E5E8SE9SE11SE12SE12SE8SE9SE10SE11S12
G20
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2 days agoS23
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G26
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G27

Tide / Current Tables for Port Isabel, Texas
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Port Isabel
Click for Map
Thu -- 01:43 AM CST     -0.05 feet Low Tide
Thu -- 06:58 AM CST     Sunrise
Thu -- 11:25 AM CST     0.96 feet High Tide
Thu -- 11:31 AM CST     Moonrise
Thu -- 06:26 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.1-0-000.10.30.50.60.80.90.9110.90.90.90.90.90.90.80.80.60.50.3

Tide / Current Tables for Queen Isabella Causeway (west end), Texas
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Queen Isabella Causeway (west end)
Click for Map
Thu -- 01:44 AM CST     -0.07 feet Low Tide
Thu -- 06:58 AM CST     Sunrise
Thu -- 10:57 AM CST     0.82 feet High Tide
Thu -- 11:30 AM CST     Moonrise
Thu -- 03:46 PM CST     0.57 feet Low Tide
Thu -- 05:00 PM CST     0.73 feet High Tide
Thu -- 06:26 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0-0-0.1-00.10.20.40.50.70.80.80.80.80.70.60.60.60.70.70.70.60.50.40.2

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 (17,4,5,8)
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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.