Monday, November20, 2017 L-36.com


Marine Weather and Tides
Corpus Christi, 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 6:54AMSunset 5:36PM Monday November 20, 2017 11:21 AM CST (17:21 UTC) Moonrise 8:37AMMoonset 7:33PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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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GMZ250 Coastal Waters From Baffin Bay To Port Aransas Out 20 Nm- 927 Am Cst Mon Nov 20 2017
Rest of today..East wind around 10 knots. Seas 2 to 3 feet. A slight chance of showers and Thunderstorms late in the morning.
Tonight..Southeast wind 5 to 10 knots shifting south after midnight. Seas 2 to 3 feet. A slight chance of showers after midnight.
Tuesday..Southwest wind around 5 knots shifting south in the afternoon. Seas 2 feet.
Tuesday night..East wind 5 to 10 knots becoming north 15 to 20 knots after midnight. Seas 2 to 3 feet. A chance of showers.
Wednesday..North wind 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. A slight chance of showers.
Wednesday night..North wind 15 to 20 knots decreasing to 10 to 15 knots after midnight. Seas 4 to 6 feet with occasional seas up to 8 feet.
Thursday..North wind 10 to 15 knots decreasing to 5 to 10 knots in the afternoon. Seas 2 to 4 feet with occasional seas up to 5 feet.
Thursday night..East wind around 5 knots shifting southwest after midnight. Seas 2 to 3 feet.
Friday..Southwest wind around 5 knots shifting south in the afternoon. Seas 2 feet.
Friday night..South wind 10 to 15 knots. Seas 2 to 3 feet.
GMZ200 927 Am Cst Mon Nov 20 2017
Synopsis for the middle texas coastal waters.. A weak to moderate onshore flow is expected today as the surface ridge moves northeast. Isolated to scattered showers and Thunderstorms will be possible today as an upper level disturbance moves across the area. A weak southerly flow is expected tonight and Tuesday. A weak onshore flow is expected into Tuesday evening. A moderate to strong offshore flow will develop late Tuesday night into Wednesday as a cold front and associated surge of surface high pressure moves across the coastal waters. Small craft advisories will be possible late Tuesday night into Wednesday. Additional isolated to scattered showers are anticipated Tuesday night into Wednesday. Offshore flow will weaken on Thursday and become onshore Friday.

7 Day Forecast for Marine Location Near Corpus Christi, TX
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location: 27.52, -97.15     debug


Area Discussion for - Corpus Christi, TX
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Fxus64 kcrp 201340 aab
afdcrp
area forecast discussion... Updated
national weather service corpus christi tx
740 am cst Mon nov 20 2017

Discussion Short wave trough moving through south texas early
this morning. 12z crp sounding showed steep mid level lapse rates
with adequate mid level moisture. Isolated thunderstorms moving
across the southern coastal bend will continue to move east into
the coastal waters this morning. Even had report of small hail
with thunderstorm near orange grove. Updated forecast to include
mention of isolated thunderstorms for the southern coastal bend
and coastal waters this morning. Short wave trough will move east
of the region by this afternoon with only lingering slight chance
of rain over the offshore waters.

Previous discussion issued 537 am cst Mon nov 20 2017
discussion...

some enhanced echoes showing up out to the west with tops around
30 kft. Still looks as if most of this will not reach the ground,
and even if it does we should see no more than trace amounts. In
short, did include sprinkles over inland areas for this morning.

Updated products out.

See .Aviation discussion for 12z tafs.

Aviation...

vfr conditions with light winds. Could have a gust or two this
morning as enhanced reflectivity could bring some higher momentum
winds down. Could also have a sprinkle or two mainly kali and kcrp
but did not include at this time as this will be rather brief.

Winds shift to the SE from west to east today, with light winds
developing this evening and overnight. Some fog possible at kvct
and kali toward morning. For now, just going MVFR and ifr at each
location, respectively.

Previous discussion... Issued 315 am cst Mon nov 20 2017
short term (today through Tuesday)...

water vapor imagery and streamline analysis is showing trough just
east of the big bend region moving slowly eastward. Some mid and
high clouds are showing up on the IR channel, and the evening
sounding showed a rather dry airmass 700mb and below. Model
guidance for rainfall seems once again to be keying on the high
mid and upper level moisture which is expected to decrease later
this afternoon (and maybe earlier) as south texas begins to get on
the back side of the upper trough. In short, will go with a dry
forecast for today (except offshore) as expect any rain which
falls from the mid and upper cloud cover will evaporate before
reaching the ground (could not rule out a drop or two on the
windshield this morning). Looking at the water vapor imagery, it
looks as if the better moisture is already beginning to push east.

Otherwise, return flow resumes today and does not become very strong
through Tuesday, perhaps being a bit ssw on Tuesday ahead of the
next frontal boundary. Moisture does get better by Tuesday afternoon
and there is a pretty potent upper level jet which approaches the
area Tuesday afternoon, but it looks like the better dynamics (and
moisture) may be more east of the inland areas (maybe near the coast
late Tuesday afternoon). In any case, will keep the forecast over
inland areas dry for now. Mid level moisture moisture advection is
not impressive on Tuesday so will hold off on rain except offshore.

Warmer each period, with the better warm-up on Tuesday with the weak
westerly flow in the boundary layer. Generally went on the warm side
of guidance for highs. For Tuesday morning lows, went near or cooler
than MOS away from the coast but near or on the warm side closer to
the coast.

Marine (today through Tuesday)...

onshore flow returns, and with the upper trough impacting the waters
could not rule out a sprinkle or two. However, patchy rain (to where
it would be significant enough) is a bit over-done and thus will
just mention sprinkles for today. For Tuesday, there could be enough
jet dynamics along with instability for some showers in the
afternoon. Could not rule out thunder, but for now will just keep it
showers. No other marine issues at this time.

Long term (Tuesday night through Sunday)...

models prog another cold front to push through S tx Tuesday night in
response to a long wave trough aloft moving SE across the region.

Sufficient moisture is progged to be in place across the eastern cwa
and over the gulf waters ahead of and along the frontal bdry to
produce iso sct -shras. Am not expecting tsras due to low cape
values and drier airmass above 700mb along with a cap, thus
hindering deep convection. Advisory conditions are anticipated
across the coastal waters late Tue night into Wed behind the front.

Drier and cooler conditions will filter across S tx through Wed with
lows Wed night in the 40s most locations. Thanksgiving day is
expected to be pleasant with abundant sunshine, light winds and
temps in the 70s. Onshore flow resumes Thu with a warming trend
fri Sat ahead of the next cold front. Models have been inconsistent
with next weekends front and now show a very weak front with winds
backing to the east and northeast by late Sat night or Sunday
morning with temps only slightly cooler in its wake. Moisture will
be limited, therefore no significant rainfall is anticipated next
weekend.

Preliminary point temps pops
Corpus christi 72 57 83 56 71 20 0 10 20 10
victoria 71 54 79 54 70 10 0 10 20 10
laredo 71 56 82 54 71 10 0 0 10 0
alice 73 53 84 54 72 20 0 0 10 10
rockport 72 60 78 57 70 20 10 10 20 10
cotulla 72 50 82 51 70 10 0 0 10 0
kingsville 74 55 84 56 72 20 0 10 20 10
navy corpus 72 62 81 61 70 20 10 10 30 20

Crp watches warnings advisories
Tx... None.

Gm... None.

Tmt 89... Short term


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MQTT2 - 8775870 - Malaquite Beach (Corpus Christi), TX 6 mi51 min N 11 G 14 64°F 69°F1021.8 hPa
PACT2 - 8775792 - Packery Channel, TX 9 mi51 min NNE 11 G 14 63°F 64°F1022.4 hPa
IRDT2 10 mi51 min N 13 G 15 63°F 62°F1022.3 hPa
BABT2 - 8776604 - Baffin Bay; Point of Rocks, TX 20 mi51 min N 13 G 15 62°F 64°F1022 hPa
RTAT2 - 8775237 - Port Aransas, TX 22 mi51 min NNE 12 G 17 62°F 68°F1022.1 hPa
PTAT2 - Port Aransas, TX 22 mi81 min N 14 G 14 62°F 70°F1022.1 hPa (+0.5)49°F
ANPT2 23 mi51 min N 15 G 17 62°F 68°F1021.1 hPa
TAQT2 - 8775296 - Texas State Aquarium, TX 24 mi51 min 62°F 66°F1021.3 hPa
NUET2 28 mi51 min ENE 13 G 14 65°F1022.3 hPa

Wind History for Corpus Christi, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Corpus Christi, Corpus Christi Naval Air Station/Truax Field, TX14 mi25 minNE 1310.00 miOvercast67°F50°F55%1021.7 hPa

Wind History from NGP (wind in knots)
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Last 24hrNE17
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NE13NE12NE11E10NE9NE7NE7NE8NE6NE4CalmN5NE10N8NE11NE11NE11N11N12NE12N10NE12NE13
1 day agoS11S7S10SE12SE8SE6SE4N27
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2 days agoS15
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Tide / Current Tables for Corpus Christi, Texas
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Corpus Christi
Click for Map
Mon -- 06:53 AM CST     Sunrise
Mon -- 08:36 AM CST     Moonrise
Mon -- 09:14 AM CST     0.09 feet Low Tide
Mon -- 05:35 PM CST     Sunset
Mon -- 06:16 PM CST     1.99 feet High Tide
Mon -- 07:32 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.51.41.31.10.90.60.30.20.10.10.30.50.81.21.51.81.9221.91.91.81.7

Tide / Current Tables for Aransas Pass, Texas Current
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Aransas Pass
Click for Map
Mon -- 12:56 AM CST     -0.00 knots Slack
Mon -- 06:53 AM CST     Sunrise
Mon -- 08:03 AM CST     -1.56 knots Max Ebb
Mon -- 08:36 AM CST     Moonrise
Mon -- 01:27 PM CST     0.00 knots Slack
Mon -- 05:33 PM CST     Sunset
Mon -- 05:53 PM CST     1.62 knots Max Flood
Mon -- 07:31 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.2-0-0.2-0.4-0.6-0.9-1.2-1.5-1.6-1.5-1.3-1.1-0.7-0.30.30.81.31.51.61.61.41.31.10.8

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 Corpus Christi, TX (12,3,4,5)
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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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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.