Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Port Isabel, 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 7:18AMSunset 7:24PM Sunday September 24, 2017 5:55 PM CDT (22:55 UTC) Moonrise 10:14AMMoonset 9:36PM Illumination 19% Phase: Waxing Crescent; Moon at 4 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- 358 Pm Cdt Sun Sep 24 2017
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.
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 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.
Tuesday..Southeast winds 10 to 15 knots. A moderate chop on the bay. Chance of showers and slight chance of Thunderstorms.
Tuesday night..Southeast winds 10 to 15 knots. A moderate chop on the bay. 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 slight chance of 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 slight chance of Thunderstorms.
Thursday..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 slight chance of Thunderstorms.
Thursday night..East winds 10 to 15 knots becoming northeast 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.
Friday..Northeast winds 5 to 10 knots. A light chop on the bay. Slight chance of showers and Thunderstorms.
Friday night..Northeast winds 5 to 10 knots. A light chop on the bay. Slight chance of showers and Thunderstorms.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 358 Pm Cdt Sun Sep 24 2017
Synopsis..The light wind and low sea regime to remain in tact through Tuesday. Winds begin to turn more east Wednesday and Thursday and shifting northeast Friday as a cold front approaches and eventually moves into the coastal waters. Winds although not expected to strong a more moderate breeze is possible. Isolated to scattered showers and Thunderstorms each day may produce locally higher winds and seas.

7 Day Forecast for Marine Location Near Port Isabel, TX
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location: 26.06, -97.22     debug


Area Discussion for - Brownsville, TX
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Fxus64 kbro 241946
afdbro
area forecast discussion
national weather service brownsville tx
246 pm cdt Sun sep 24 2017
.Short term (now through Monday night): the region will remain
trapped in an area of weakness aloft, as a mid upper level trough
deepens across the western half of the us and a weak area of low
pressure over the northern gulf of mexico and the gulf coast states
slowly drifts westward. The combination of the weakness aloft, along
with daytime heating, and the sea breeze has allowed for isolated to
locally scattered showers and thunderstorms to develop thus far this
afternoon across primarily the coastal counties. This activity
should spread further westward, diminishing into the evening hours
as daytime heating subsides. The diurnal streamer activity over the
gulf waters will pick back up by early morning, with a shower or two
possibly making it inland. As the western trough builds eastward
Monday and Monday night, deep layer moisture will be on the
increase, with the dry pocket between 500 and 700 mb effectively
eliminated. Expect better rain chances tomorrow (30 to 40%),
especially across the western three counties, where the best
moisture will reside. Made only minor adjustments to the inherited
temperatures to adjust for increased cloudiness and pops. Highs
Monday may be a bit too high across zapata and starr counties, but
will be highly dependent upon exactly when and where convective
activity fires up.

.Long term (Tuesday through Sunday): a mid level trough will hover
over the southwest united states with a cut off low forming at its
base. Meanwhile, a low over the north central gulf will pack it up
and shift toward florida as a weak ridge forms over coastal texas,
the northwest gulf, and the lower mississippi valley. A persistent
weak background of surface high pressure will continue over the
north gulf. Plains high pressure will receive reinforcement from a
canadian air mass mid to late week, pushing a weak front into the
area. The models bring slight backing wind shifts into the picture
from Thursday morning on, and high pressure will slowly filter into
the area as the upstream high spreads south and east, but a sharp
frontal passage will be difficult to pin down. Relatively high pwat,
above two inches Tuesday through Wednesday night, will support more
widespread rain chances, but forecast QPF values are look less than
extraordinary, so did not go for heavy rain wording at this stage.

Rain chances look better over the far west, with perhaps some
destabilizing influence over north central mexico from the upstream
cut off. Retained the inherited forecast with minor changes, and
used a model blend as the background.

.Marine:
now through Monday night: surface high pressure remains in place
over the southeastern united states through the period. This will
maintain favorable marine conditions as light to moderate
southeast winds and low seas prevail. Rain chances continue
through the period with isolated to scattered showers and
thunderstorms possible.

Tuesday through Friday night: the pressure field will remain rather
broad and flat through the long term, supporting continued light to
moderate winds and low to moderate seas. However, winds will back
from southeast to east Wednesday and Thursday as a new air mass
works into the area, and subsequent reinforcement will further back
winds to northeast Thursday night to Friday night. Ample moisture
pooling ahead of the associated weak front identified to arrive
Thursday to Thursday night will keep at least a slight chance of
showers and thunderstorms in the forecast for the marine areas.

Preliminary point temps pops
Bayview port isabel 79 90 80 90 20 30 20 30
brownsville 78 92 79 91 20 30 20 30
harlingen 77 94 78 92 20 30 20 30
mcallen 78 96 79 93 10 30 20 40
rio grande city 77 97 78 94 10 40 30 50
south padre island 80 88 80 88 20 30 20 20

Bro watches warnings advisories
Tx... None.

Gm... None.

This product is also available on the web at:
http: weather.Gov rgv
58 54


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PTIT2 - 8779770 - Port Isabel, TX 0 mi37 min E 15 G 19 84°F 85°F1008 hPa
PCGT2 - 8779748 - South Padre Island CGS, TX 3 mi37 min SE 14 G 16 84°F 1008.5 hPa
BZST2 3 mi37 min ESE 14 G 17
RLIT2 14 mi37 min ESE 14 G 18 85°F 84°F1007.9 hPa
PMNT2 36 mi37 min 84°F 85°F1007.9 hPa
42045 - PI-745 TABS K 40 mi115 min S 9.7 G 12 85°F1008.3 hPa

Wind History for Port Isabel, TX
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Isabel, Port Isabel-Cameron County Airport, TX9 mi62 minESE 14 G 2110.00 miFair89°F77°F68%1007.6 hPa
Brownsville, Brownsville / South Padre Island International Airport, TX16 mi62 minSE 1310.00 miPartly Cloudy88°F75°F66%1007.5 hPa

Wind History from SPL (wind in knots)
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Last 24hrSE7S7S10S8S8S9S8W5SW11S14SW13SW8SW6N4E3NE7NE6E4E5E6E4E3E4Calm
1 day agoS8S7S4SW5NW3N3N3N6E4NE4E5E13SE16NW8S4S7S5CalmCalmSE6SE6SE5SE6SE5
2 days agoSE7SE7SE8SE3S5S6S6SW5NW3NW4SW8SW11S20SW16
G21
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G18
S15S18S15S14S10SW9SW8S9S7

Tide / Current Tables for Port Isabel, Texas
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Port Isabel
Click for Map
Sun -- 01:54 AM CDT     1.23 feet Low Tide
Sun -- 04:54 AM CDT     1.27 feet High Tide
Sun -- 07:18 AM CDT     Sunrise
Sun -- 11:13 AM CDT     Moonrise
Sun -- 12:31 PM CDT     0.51 feet Low Tide
Sun -- 07:22 PM CDT     Sunset
Sun -- 09:18 PM CDT     1.51 feet High Tide
Sun -- 10:36 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.21.21.21.31.31.21.21.10.90.70.60.50.50.60.70.91.11.31.41.51.51.51.5

Tide / Current Tables for Matamoros, Tamaulipas, Mexico
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Matamoros
Click for Map
Sun -- 01:10 AM CDT     1.59 feet Low Tide
Sun -- 04:49 AM CDT     1.67 feet High Tide
Sun -- 07:19 AM CDT     Sunrise
Sun -- 11:14 AM CDT     Moonrise
Sun -- 12:22 PM CDT     0.82 feet Low Tide
Sun -- 07:23 PM CDT     Sunset
Sun -- 09:00 PM CDT     1.89 feet High Tide
Sun -- 10:37 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.61.61.61.71.71.61.51.41.210.90.80.80.91.11.31.51.61.81.91.91.91.8

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 (18,4,5,8)
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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.