Friday, December15, 2017

Marine Weather and Tides
Aransas Pass, 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 7:12AMSunset 5:37PM Friday December 15, 2017 8:02 AM CST (14:02 UTC) Moonrise 4:48AMMoonset 4:05PM Illumination 8% Phase: Waning Crescent; Moon at 27 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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GMZ235 Bays And Waterways From Port Aransas To Port O'connor- 335 Am Cst Fri Dec 15 2017
.small craft advisory in effect until noon cst today...
Today..North wind around 20 knots becoming northeast 10 to 15 knots late. Bays choppy to occasionally rough. Showers likely in the morning, then a chance of showers in the afternoon.
Tonight..North wind 5 to 10 knots. Bays smooth to slightly choppy. A slight chance of showers in the evening.
Saturday..Northeast wind 10 to 15 knots. Bays slightly choppy to occasionally choppy. A chance of showers in the morning, then showers likely and a slight chance of Thunderstorms in the afternoon.
Saturday night..North wind 10 to 15 knots becoming northwest 5 to 10 knots after midnight. Bays slightly choppy to occasionally choppy. Showers in the evening. A slight chance of Thunderstorms. A chance of showers after midnight.
Sunday..North wind around 5 knots shifting northeast in the afternoon. Bays smooth. A slight chance of showers in the morning.
Sunday night..East wind up to 5 knots. Bays smooth. A chance of showers.
Monday..South wind around 5 knots shifting west in the afternoon. Bays smooth. A chance of showers and a slight chance of Thunderstorms.
Monday night..North wind 5 to 10 knots. Bays smooth to slightly choppy. A chance of showers and a slight chance of Thunderstorms.
Tuesday..North wind 5 to 10 knots. Bays smooth to slightly choppy. A chance of showers and a slight chance of Thunderstorms.
Tuesday night..Northeast wind 5 to 10 knots. Bays smooth to slightly choppy. A slight chance of showers.
GMZ200 335 Am Cst Fri Dec 15 2017
Synopsis for the middle texas coastal waters.. Strong offshore flow will persist in wake of a strong cold front pushing offshore this morning. Wind speeds will gradually weaken to a moderate to strong flow during the afternoon. Numerous to widespread showers will move across the waters today, decreasing in coverage this evening as drier air moves into the region behind the front. An upper disturbance and coastal trough will bring an additional higher chances of showers and Thunderstorms Saturday, and especially Saturday night. Winds will become elevated Saturday night due to the disturbance deepening the surface low. The disturbance will move east by Sunday, resulting in diminishing rain chances, with a relatively weak offshore flow developing as the surface trough moves toward the northern gulf states. Onshore flow resumes briefly on Monday before another frontal boundary and disturbance impact the waters on Tuesday and brings another chance for showers and possible Thunderstorms.

7 Day Forecast for Marine Location Near Aransas Pass, TX
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location: 27.94, -97.07     debug

Area Discussion for - Corpus Christi, TX
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Fxus64 kcrp 151201
area forecast discussion
national weather service corpus christi tx
601 am cst Fri dec 15 2017

See aviation below for 12z TAF update.

Light rain and showers will continue moving across over area
terminals this morning, diminishing in coverage through the
afternoon. A brief lowering of CIGS to MVFR levels may occur this
morning, butVFR will generally prevail through the period.

Moderate winds will be from the north this morning, becoming light
during the evening and overnight.

Previous discussion issued 438 am cst Fri dec 15 2017
short term (today through Saturday)...

cold and rainy conditions are the focus to the end of the week
forecast. Mid to upper level moisture continues to stream across
northern mexico and over south texas and the middle texas coastal
waters this morning, with a deep upper level low positioned over
the baja peninsula. These conditions along with a favorably
located jet streak are helping to produce numerous to widespread
showers across much of the region early this morning. A strong
cold front moved offshore late last night early this morning. As
drier air filters towards the coast today, rain chances will
taper down from north to south this afternoon and evening. In wake
of the cold front today, temperatures will remain much cooler,
with highs staying in the 50s. Mostly cloudy to overcast skies
will persist through the end of the week. Saturday, the upper
level low will move further east, closer to the region, while an
inverted trough develops. Deeper moisture will return, and
anticipate more widespread showers to overrun most of the area. An
isolated thunderstorm may be able to develop in the afternoon as
well as the upper disturbance lifts northeast. As grey and rainy
conditions continue through the day on Saturday, temperatures will
not warm much, with highs staying in the 50s once again.


strong north winds and elevated seas are developing in wake of a
strong cold front this morning, and a small craft advisory is in
effect through today. An occasional, short-lived gust to gale
force will be possible across the open waters early this morning.

Winds will gradually diminish across the bays by the late
morning early afternoon, with winds and seas dropping across the
coastal waters through the afternoon.

Long term (Saturday night through Thursday)...

looks to be fairly active with perhaps a day here and there where
no rainfall is expected mainly in the middle of the week near the
end of this package (so much for la nina). Looks like the rain
chances for Saturday night will mainly be in the evening before the
trough moves across and the drier air begins to come in. Will have
likely and categorical pops Saturday evening east with just low end
pops farther west, then diminish rain chances a bit overnight
(especially west). Except for a few showers near the coast and over
the gulf waters on Sunday, looks like Sunday will be dry. Moisture
returns Sunday night with the next upper disturbance, and there is
enough instability at least offshore for the mention of thunder (did
also include it in the near coastal areas).

Another rather weak front on Tuesday, then the models diverge a bit
with the GFS and canadian bringing the shortwave trough across on
Tuesday but the ECMWF keeping the trough to the west at least 12
hours slower. Will keep in a slight mention of rain for Tuesday
night (lean more toward the GFS canadian though). Will go with a dry
forecast on Wednesday with zonal flow then another trough moves
toward the area on Thursday. At this time it looks as if there will
be enough dynamics by Thursday night to mention a chance for rain.

Thus, pattern remains somewhat active with mild days and nights but
no real cold air over the next several days.

Preliminary point temps pops
Corpus christi 54 45 59 49 66 70 20 70 70 10
victoria 57 42 58 47 68 30 10 80 90 10
laredo 55 44 51 44 65 60 20 80 20 10
alice 54 44 56 45 68 70 20 80 60 10
rockport 57 45 60 50 65 70 10 70 80 10
cotulla 58 43 52 42 66 30 10 80 30 10
kingsville 54 44 56 46 68 80 20 70 60 10
navy corpus 57 48 61 54 67 80 20 60 70 10

Crp watches warnings advisories
Tx... None.

Gm... Small craft advisory until 6 pm cst this evening for the
following zones: coastal waters from baffin bay to port
aransas out 20 nm... Coastal waters from port aransas to
matagorda ship channel out 20 nm... Waters from baffin bay
to port aransas from 20 to 60 nm... Waters from port aransas
to matagorda ship channel from 20 to 60 nm.

Small craft advisory until noon cst today for the following
zones: bays and waterways from baffin bay to port aransas...

bays and waterways from port aransas to port o'connor.

Lb 84... Aviation

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANPT2 7 mi45 min NW 20 G 23 52°F 63°F1022 hPa
RTAT2 - 8775237 - Port Aransas, TX 7 mi45 min N 14 G 19 51°F 64°F1022.9 hPa
TAQT2 - 8775296 - Texas State Aquarium, TX 19 mi45 min 50°F 58°F1022.5 hPa
NUET2 23 mi45 min N 19 G 23 56°F1023.6 hPa
PACT2 - 8775792 - Packery Channel, TX 23 mi45 min N 19 G 28 52°F 58°F1022.9 hPa
AWRT2 25 mi45 min N 14 G 19 49°F 56°F1022.7 hPa
MQTT2 - 8775870 - Malaquite Beach (Corpus Christi), TX 26 mi45 min NNW 19 G 25 52°F 62°F1022.6 hPa
IRDT2 34 mi45 min N 21 G 25 53°F 56°F1023 hPa
SDRT2 - 8773037 - Seadrift, TX 37 mi45 min NNW 8.9 G 12 48°F 57°F1023.3 hPa
BABT2 - 8776604 - Baffin Bay; Point of Rocks, TX 48 mi45 min NNW 18 G 21 50°F 56°F1023.3 hPa
KMZG 49 mi28 min ESE 27 G 36 55°F 45°F

Wind History for Rockport, TX
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mc Campbell, TX8 mi68 minN 1210.00 miLight Drizzle50°F41°F73%1022.7 hPa
Rockport Aransas County Airport, TX10 mi70 minN 17 G 2310.00 miLight Rain49°F39°F71%1022.5 hPa
Corpus Christi, Corpus Christi Naval Air Station/Truax Field, TX21 mi67 minN 26 G 3210.00 miLight Rain and Windy52°F41°F66%1021.9 hPa

Wind History from TFP (wind in knots)
Last 24hrN4N5NE3NE4E6E6NE6E6NE5E9E8NE4N7N6N6N8N8N6N11
1 day ago--------SW7SW7S4S4SE4CalmE3SE3SE3S4CalmSW3S4S5CalmCalmCalmNE3N4NE4
2 days ago------------------------------------------------

Tide / Current Tables for Rockport, Aransas Bay, Texas
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Fri -- 12:36 AM CST     0.24 feet High Tide
Fri -- 04:47 AM CST     Moonrise
Fri -- 07:12 AM CST     Sunrise
Fri -- 10:37 AM CST     -0.07 feet Low Tide
Fri -- 04:05 PM CST     Moonset
Fri -- 05:34 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Aransas Pass, Texas Current
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Aransas Pass
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Fri -- 12:15 AM CST     -0.00 knots Slack
Fri -- 04:47 AM CST     Moonrise
Fri -- 06:29 AM CST     -1.42 knots Max Ebb
Fri -- 07:11 AM CST     Sunrise
Fri -- 11:08 AM CST     0.00 knots Slack
Fri -- 03:19 PM CST     1.43 knots Max Flood
Fri -- 04:05 PM CST     Moonset
Fri -- 05:35 PM CST     Sunset
Fri -- 11:43 PM CST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of SouthCentralPlains    EDIT

Wind Forecast for Corpus Christi, TX (9,2,3,4)
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Ground Weather Radar Station Corpus Christi, TX
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weather_mapweather_map weather_map

Gulf Stream Current

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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 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 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.