Tuesday, December10, 2019
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Marine Weather and Tides
Laguna Heights, TX

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:04AMSunset 5:40PM Tuesday December 10, 2019 9:29 AM CST (15:29 UTC) Moonrise 4:43PMMoonset 5:28AM Illumination 98% Phase: Waxing Gibbous; Moon at 14 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- 406 Am Cst Tue Dec 10 2019
.gale warning in effect from 10 am cst this morning through late tonight...
Today..West winds 15 to 25 knots shifting north 25 to 30 knots in the afternoon. Rough on the bay. Rain showers likely in the morning, then chance of rain showers in the afternoon.
Tonight..North winds 25 to 30 knots diminishing to around 20 knots after midnight. Rough on the bay. Slight chance of rain showers in the evening.
Wednesday..North winds 15 to 20 knots. Choppy on the bay. Slight chance of rain showers.
Wednesday night..North 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.
Thursday..North winds 5 to 10 knots. A light chop on the bay.
Thursday night..North winds 5 to 10 knots. A light chop on the bay.
Friday..Northwest winds 5 to 10 knots becoming north in the afternoon. A light chop on the bay subsiding to smooth in the afternoon.
Friday night..South winds around 5 knots increasing to 5 to 10 knots after midnight. Smooth on the bay building to a light chop after midnight.
Saturday..Southwest winds 5 to 10 knots shifting south in the afternoon. A light chop on the bay.
Saturday night..Southeast winds 5 to 10 knots. A light chop on the bay.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 406 Am Cst Tue Dec 10 2019
Synopsis..The approach and passage of a cold front will create adverse marine conditions through at least Wednesday morning. Gale conditions are expected for all coastal waters leading to dangerous boating conditions. Gradual improvement is expected late Wednesday and early Thursday and favorable marine conditions are expected from late week into the weekend.


7 Day Forecast for Marine Location Near Laguna Heights, TX
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location: 26.1, -97.23     debug


Area Discussion for - Brownsville, TX
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FXUS64 KBRO 101152 AAA AFDBRO

Area Forecast Discussion . UPDATED National Weather Service Brownsville TX 552 AM CST Tue Dec 10 2019

. 12z Aviation Update .

DISCUSSION. Updated for latest aviation discussion below.

AVIATION. MVFR conditions will likely give way to IFR later this morning as a strong cold front moves through. Low stratus due to moisture pooling will give way to MVFR again later this evening. MFE may rebound a bit faster than the coastal terminals. Outside of the lower clouds deck, winds behind the front will be gusty with some gusts perhaps reaching 35 knots at times for HRL and BRO. Winds drop off later tonight. Only other entity to note is the llws added to BRO this AM. The 2kft winds are around 30kts with surface winds nearly calm. This will quickly diminish as the front nears later this morning.

PREV DISCUSSION. /issued 409 AM CST Tue Dec 10 2019/

SHORT TERM (Today through Wednesday): A cold front was currently situated across south Texas just north of our CWFA at the time of this discussion. Ahead of the front moisture pooling is helping reduce visibilities with low stratus/fog from Zapata to Kingsville. The front will begin to move into our north/northwest by around sunrise or maybe even a little before. As the front slides through the region this morning, temperatures will be dropping and surface winds will be increasing. Will need a Wind Advisory for coastal sections at the very least. Though looking at 925mb winds later today, an axis of very strong winds will set up right along the coast and perhaps a tier or two of counties inland. This axis looks to gradually slide eastward and may help increase winds for a second time behind the initial frontal push. Greatest potential at the moment will again be right along the coast where SSTs will help moderate low levels allowing for better downward transport.

Some shower activity will be possible right along or behind the front where isentropic upglide will help initiate some lighter rainfall generally closer to the coast. Unfortunately, inland locations may only get a few sprinkles at best from this front. Winds will gradually begin to subside tonight, however, will remain gusty as some signs of a weak coastal trough begins to develop. With the cloud cover closer to the coast, think temperatures will likely stay closer to the 50 degree mark, however, inland locations that do have a few breaks will drop into the 40s.

Wednesday looks pretty gloomy right on the coast with frictional convergence and subtle isentropic upglide due to the aforementioned coastal trough. Out west, clouds will continue to decrease through the day. With the stronger CAA weakening, expect these locations to warm into the middle 60s vs upper 50s and lower 60s along the gloomy coastline. Most of the rainfall will remain offshore through the 2nd half of the period, but can't rule out pockets of drizzle near the mouth of the Rio Grande.

LONG TERM (Wednesday Night through Monday):500mb trough will be crossing Texas and the Central Plains Thursday through Friday followed by flat ridging over the weekend with the mid-level flow then transitioning southwest, over Texas, as another trough digs into the 4-corners region early next week. Main change in the model trends has been the ECMWFs farther northern track of the 500mb shortwave trough now crossing Northern Texas, Thu and Friday, instead of taking a southern track over Northern Mexico. The last two runs of the ECMWF has shown this change and is now in line with the GFS and other ensemble models which provides more confidence for this forecast package.

Overall, Deep South Texas forecast trend will be for a steady warming trend as the Canadian airmass that overspreads the region today modifies. The approach of the mid-level shortwave will maintain quasi-low pressure over the Gulf with broad surface high extending from the Great Lakes into Texas. This should provide a dry (rain free) north to northeast flow across the CWA through Friday. As the mid-level flows backs northwest to west this weekend, surface winds return to from the south which should accelerate the warming trend and may lead to some rain next Monday. Next cold front takes shape over the Rockies Monday working its way towards the RGV next Tuesday.

MARINE:(Today through Wednesday): Marine conditions will decline rapidly through the morning hours as a strong cold front begins to slide through the region. Gale conditions will quickly set up across all coastal waters of Deep South Texas making boating dangerous. Gale conditions will occur on the Laguna Madre through the early evening before decreasing to SCA thresholds. Offshore, Gale conditions can be expected a bit longer, generally through the early morning hours of Wednesday. Beyond this time, SCA thresholds will easily be met through the remainder of the short term marine forecast period. Additionally, a few scattered showers and possibly a rogue thunderstorm or two can't be ruled out this afternoon along or slightly ahead of the front. Lighter stratiform precipitation or pockets of drizzle will remain possible as a weak coastal trough develops.

Wednesday night through Friday . Winds and seas will be on a slow lowering trend through Friday. Small Craft advisories may still be in place Wednesday night for the Gulf waters but should be improving Thursday. North to northeast winds persist through Friday which may result in slower subsiding seas especially over the outer Gulf waters where the presssure gradient between low pressure over the Central Gulf and high pressure across Texas will be the strongest. Exercise caution conditions, may still exist through Thursday before relaxing Friday.

BRO WATCHES/WARNINGS/ADVISORIES. TX . Wind Advisory from 10 AM this morning to 3 AM CST Wednesday for TXZ256-257-351.

Wind Advisory from 10 AM this morning to 9 PM CST this evening for TXZ251-254-255.

GM . Gale Warning from 10 AM this morning to 3 AM CST Wednesday for GMZ130-132-135-150-155-170-175.



This product is also available on the web at: HTTP://WEATHER.GOV/RGV

Short Term/Aviation . Frye-55 Long Term . Bogorad-59 Graphicast/Upper Air/Hazards . Farris-69


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PTIT2 - 8779770 - Port Isabel, TX 3 mi65 min E 2.9 G 2.9 71°F 70°F1013.4 hPa
PCGT2 - 8779748 - South Padre Island CGS, TX 4 mi59 min E 5.1 G 6 71°F 1012.7 hPa
BZST2 5 mi65 min E 5.1 G 5.1 71°F 70°F1011.8 hPa
PMNT2 33 mi65 min 72°F 73°F1013.5 hPa

Wind History for South Padre Island C.G Station, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Port Isabel, Port Isabel-Cameron County Airport, TX7 mi36 minN 07.00 miOvercast75°F71°F88%1013.4 hPa
Brownsville, Brownsville / South Padre Island International Airport, TX17 mi36 minN 010.00 miOvercast74°F70°F88%1013.4 hPa

Link to 5 minute data for KSPL

Wind History from SPL (wind in knots)
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Last 24hrSE7S7S10S8S8S9S8W5SW11S14SW13SW8SW6N4E3NE7NE6E4E5E6E4E3E4Calm
1 day agoS8S7S4SW5NW3N3N3N6E4NE4E5E13SE16NW8S4S7S5CalmCalmSE6SE6SE5SE6SE5
2 days agoSE7SE7SE8SE3S5S6S6SW5NW3NW4SW8SW11S20SW16
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Tide / Current Tables for Port Isabel, Texas
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Port Isabel
Click for Map
Tue -- 05:28 AM CST     Moonset
Tue -- 07:05 AM CST     Sunrise
Tue -- 07:45 AM CST     -0.06 feet Low Tide
Tue -- 04:42 PM CST     Moonrise
Tue -- 05:06 PM CST     1.49 feet High Tide
Tue -- 05:37 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.110.90.70.50.30.1-0-0.100.20.40.711.21.41.51.51.51.41.41.31.21.2

Tide / Current Tables for Matamoros, Tamaulipas, Mexico
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Matamoros
Click for Map
Tue -- 05:29 AM CST     Moonset
Tue -- 07:05 AM CST     Sunrise
Tue -- 07:35 AM CST     -0.25 feet Low Tide
Tue -- 04:35 PM CST     1.35 feet High Tide
Tue -- 04:44 PM CST     Moonrise
Tue -- 05:39 PM CST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.90.80.60.30.1-0.1-0.2-0.2-0.10.10.30.60.91.11.31.31.31.31.21.21.11.11.1

Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Brownsville, TX (10,2,3,4)
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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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