Marine Weather Net

Bay and Waterways from Port Aransas to Port O'Connor Marine Forecast


TODAY

N
WINDS
10 - 15
KNOTS

TONIGHT

N
WINDS
15 - 20
KNOTS

FRIDAY

N
WINDS
15 - 20
KNOTS

FRIDAY NIGHT

NE
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
GMZ235 Forecast Issued: 304 AM CST Thu Nov 14 2019

SMALL CRAFT EXERCISE CAUTION
Today...North Wind 10 To 15 Knots Increasing To 15 To 20 Knots In The Afternoon. Bays Choppy To Occasionally Rough. Showers Likely In The Morning, Then A Chance Of Showers In The Afternoon.
Tonight...North Wind 15 To 20 Knots Decreasing To 10 To 15 Knots After Midnight. Bays Choppy To Occasionally Rough. A Slight Chance Of Showers In The Evening.
Friday...North Wind 15 To 20 Knots Decreasing To 10 To 15 Knots In The Afternoon. Bays Choppy To Occasionally Rough.
Friday Night...Northeast Wind 5 To 10 Knots. Bays Smooth To Slightly Choppy.
Saturday...Northeast Wind 5 To 10 Knots Shifting East In The Afternoon. Bays Smooth.
Saturday Night...Southeast Wind 5 To 10 Knots. Bays Smooth.
Sunday...Southeast Wind 5 To 10 Knots. Bays Smooth. A Slight Chance Of Showers.
Sunday Night...East Wind 5 To 10 Knots Shifting North After Midnight. Bays Smooth To Slightly Choppy. A Slight Chance Of Showers.
Monday...North Wind 10 To 15 Knots Decreasing To 5 To 10 Knots In The Afternoon. Bays Slightly Choppy To Occasionally Choppy.
Monday Night...Northwest Wind 5 To 10 Knots Shifting West After Midnight. Bays Smooth.
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Synopsis for Middle Texas coastal waters from Baffin Bay to Matagorda ship channel - GMZ200
304 AM CST Thu Nov 14 2019

Scattered to numerous showers will continue as an upper level low moves across south Texas. A cold front will bring moderate to strong north winds this afternoon through Friday morning with Small Craft Advisory conditions for the Gulf waters. Rain chances will diminish tonight as the upper level disturbance moves to the east. A weak onshore flow will develop Saturday and persist through Sunday as low pressure develops in the Texas Panhandle. A weak cold front will move off the Coast Sunday Night resulting in a moderate offshore flow. Isolated showers will be possible along the front. SCA's are not anticipated. Offshore winds will become weak Monday Night and Tuesday.
Area Forecast Discussion
National Weather Service Corpus Christi TX
501am CST Thu Nov 14 2019

Short Term - Today Through Friday
An upper level low over eastern Mexico will open up as it moves across South Texas today. Expect scattered showers to continue through the afternoon before drier air moves in this evening. Overnight Probability of Precipitation will be limited to the islands and coastal waters. Temperatures will be about 10 degrees warmer than yesterday, in the low to mid 50s. A weak cold front will move through this afternoon shifting winds to the north. As the trough moves off to the east, upper level ridging and surface high pressure will build in on Friday. This will help temperatures to continue to warm to the the low 60s for Friday afternoon.

Tide levels have been about 0.8 feet above expected. This may lead to tide levels just above 2 feet MSL as P-ETSS/ETSS shows. A Coastal Flood Advisory is in effect from 4pm to 10pm tonight.

LONG TERM (Friday Night through Wednesday Night)... In summary, a gradual warming trend can be expected through the weekend and into the middle of next week as the cold Canadian airmass dissipates. A couple of weak systems will bring a slight chance for precipitation Sunday/Sunday Night and again Wednesday/Wednesday Night.

Period begins Friday Night with cool surface high pressure settled into South Texas with light NE winds. This will be the last day with 30 degree temperatures for a while. Weak return flow develops on Saturday as next trough moves into the Central Rockies and low pressure develops in the Texas Panhandle. Temperatures will moderate Saturday into the mid to upper 60s with light southeast winds. Mid/Upper level trough and associated cool front will swing through the state on Sunday and off the coast Sunday Night. Isolated showers will be possible ahead of this system along the coast and over the gulf waters. Trended closer to the faster/stronger ECMWF (European Centre for Medium-Range Weather Forecasts) for timing/winds. Mid/upper level ridge then builds over the state Monday/Tuesday resulting in a warm up with max temperatures in the 70s to near 80 degrees. Another disturbance approaches South Texas on Wednesday within the subtropical flow aloft. Expect decent return flow given deepening low in the Texas Panhandle. A few showers will be possible Wednesday aftn/evening within the moist advection pattern aided by the disturbance aloft. Expect highs Wednesday in the upper 70s to lower 80s. Will have to monitor for patchy sea fog if dewpoints climb much above sea surface temperatures.

Marine Discussion
Scattered to numerous showers will continue as an upper level low moves across south Texas. A cold front will bring moderate to strong north winds this afternoon through Friday morning with Small Craft Advisory conditions likely for the Gulf waters. Rain chances will diminish tonight as the upper level disturbance moves to the east.

A weak onshore flow will develop Saturday and persist through Sunday as low pressure develops in the Texas Panhandle. A weak cold front will move off the Coast Sunday Night resulting in a moderate offshore flow. Isolated showers will be possible along the front. SCA's (Small Craft Advisories) are not anticipated. Offshore winds will become weak Monday Night and Tuesday.

NOAA Corpus Christi TX Office: Watches - Warnings - Advisories
TX...Coastal Flood Advisory from 4pm this afternoon to 10pm CST this evening For the following zones: Kleberg Islands... Nueces Islands.

GM...Small Craft Advisory from noon today to noon CST Friday 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.