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Marine Weather and Tides
Version 3.4 |
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 7:05AM | Sunset 8:00PM | Friday August 23, 2019 8:04 AM CDT (13:04 UTC) | Moonrise 12:00AM | Moonset 1:00PM | Illumination 45% |  |
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- 355 Am Cdt Fri Aug 23 2019
Today..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay building to a moderate chop in the afternoon. Scattered showers and Thunderstorms.
Tonight..Southeast winds 10 to 15 knots becoming south 5 to 10 knots after midnight. A moderate chop on the bay subsiding to a light chop after midnight. Isolated showers and Thunderstorms.
Saturday..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay building to a moderate chop in the afternoon. Scattered showers and Thunderstorms.
Saturday night..Southeast winds 10 to 15 knots becoming south 5 to 10 knots after midnight. A moderate chop on the bay subsiding to a light chop after midnight.
Sunday..South winds 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. A light chop on the bay building to a moderate chop in the afternoon. Slight chance of showers and Thunderstorms.
Sunday night..South winds 10 to 15 knots. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
Monday..South winds 10 to 15 knots becoming southeast 15 to 20 knots in the afternoon. A moderate chop on the bay building to choppy in the afternoon. Slight chance of showers and Thunderstorms.
Monday night..Southeast winds 15 to 20 knots becoming south 10 to 15 knots after midnight. Choppy on the bay subsiding to a moderate chop after midnight.
Tuesday..Southeast winds 10 to 15 knots. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
Tuesday 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.
Today..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay building to a moderate chop in the afternoon. Scattered showers and Thunderstorms.
Tonight..Southeast winds 10 to 15 knots becoming south 5 to 10 knots after midnight. A moderate chop on the bay subsiding to a light chop after midnight. Isolated showers and Thunderstorms.
Saturday..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. A light chop on the bay building to a moderate chop in the afternoon. Scattered showers and Thunderstorms.
Saturday night..Southeast winds 10 to 15 knots becoming south 5 to 10 knots after midnight. A moderate chop on the bay subsiding to a light chop after midnight.
Sunday..South winds 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. A light chop on the bay building to a moderate chop in the afternoon. Slight chance of showers and Thunderstorms.
Sunday night..South winds 10 to 15 knots. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
Monday..South winds 10 to 15 knots becoming southeast 15 to 20 knots in the afternoon. A moderate chop on the bay building to choppy in the afternoon. Slight chance of showers and Thunderstorms.
Monday night..Southeast winds 15 to 20 knots becoming south 10 to 15 knots after midnight. Choppy on the bay subsiding to a moderate chop after midnight.
Tuesday..Southeast winds 10 to 15 knots. A moderate chop on the bay. Slight chance of showers and Thunderstorms.
Tuesday 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.
GMZ100 Synopsis For Baffin Bay To Rio Grande Out 60 Nm- 355 Am Cdt Fri Aug 23 2019
Synopsis..A surface trough over the northwestern gulf of mexico will maintain a weak pressure gradient, generally resulting in light-to-moderate southeast winds through tonight. Seas should remain relatively low at 2 to 4 feet. This trough will also produce periods of showers and Thunderstorms, peaking over the weekend. Southeasterly winds gradually increase through the weekend as well with thermal troughing to the west reasserting itself. Seas consequently build to moderate. A frontal boundary stalling over the southern plains should maintain the modest pressure gradient into early next week.
Synopsis..A surface trough over the northwestern gulf of mexico will maintain a weak pressure gradient, generally resulting in light-to-moderate southeast winds through tonight. Seas should remain relatively low at 2 to 4 feet. This trough will also produce periods of showers and Thunderstorms, peaking over the weekend. Southeasterly winds gradually increase through the weekend as well with thermal troughing to the west reasserting itself. Seas consequently build to moderate. A frontal boundary stalling over the southern plains should maintain the modest pressure gradient into early next week.
7 Day Forecast for Marine Location Near Laguna Heights, TX
Hourly EDIT Helplocation: 26.1, -97.23 debug
Area Discussion for - Brownsville, TX
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus64 kbro 231129 aab afdbro area forecast discussion... Updated national weather service brownsville tx 629 am cdt Fri aug 23 2019 12z aviation update... Discussion Updated for latest aviation discussion below. Aviation Vfr conditions should prevail through this TAF cycle. Can't rule out a brief reduction to the upper limits of MVFR this morning, generally before 15z. Any low clouds should mix out fairly quickly and any reduction will be very brief. That said, sea breeze shower storm activity is also possible during the late morning through the afternoon hours, however, given low confidence and the spotty nature, only used vcs for only the coastal terminals. Breezy conditions during the daylight hours will again be possible today with some gusts into the 20kt range. Prev discussion issued 421 am cdt Fri aug 23 2019 short term (today through Saturday): today should be very similar to yesterday. Hot and somewhat breezy conditions expected once again. Similar to yesterday, diurnal convection can be expected along the sea breeze from late morning through the afternoon hours, generally along and east of i69c highway 281. Cams, especially the arw show this very well. Offshore and along the coastal counties there may be a streamer shower or two between now and sunrise. Not expecting much rainfall with this activity. The big picture shows a mid level vort and surface trough across the western gulf. This will keep pops relatively high offshore through much of the short term period. We'll need to watch areas across the upper valley western tier counties toward the end of the short term period. There appears to be a slightly higher QPF signal in rather close proximity. An upper level vort develops across northern mexico coupled with some subtle surface troughing. This will likely produce convection, however, whether or not this drifts into deep south tx is still up in the air. With the slightly lower winds and increasing humidity values, fire weather concerns continue to decrease. Long term (Saturday night through Thursday): the long term period begins with the tropical wave mid-level trough pushing into the northwestern gulf and mid level riding overhead, keeping conditions hot and humid for deep south texas through the weekend. On Sunday, the ECMWF has a shortwave trough moving through the southern plains with a 500 mb low pinching off the base of this trough and eventually nudging into deep south texas by evening. This feature |
also brings a 500 mb vorticity MAX and precipitable water values around 2 inches to our cwa, therefore increasing our rain chances. In contrast, the GFS has a weaker shortwave trough and keeps its axis offshore. Have gone with a blend of these two solutions with a slight bias towards the wetter GFS solution for now, making Sunday our best chance for showers and thunderstorms for the long term period. On Monday afternoon, models agree that a 500 mb high centered over the desert southwest region begins to slide in behind the shortwave trough. Ridging aloft will help to keep conditions hot and mostly dry. However, with residual moisture overhead, have gone with a slight chance of showers and thunderstorms each day to account for possible sea breeze development. In summary, not much has changed from the previous package, except for the slight increase of pops on Sunday. Marine (today through Saturday): mariners can expect generally the same conditions as the last several days, except maybe a little less wind. Light to moderate winds are expected for the gulf waters, which will produce seas of 3 to 4 feet. For the laguna, during the daylight hours expect winds of around 15 knots with locally higher gusts, so we may need cautionary headlines in the coastal waters product(s) at some point. That said, only minimal scec is currently anticipated as winds remain rather light with the closer proximity of the surface trough just offshore. Showers tstorm chances remain across the gulf waters, especially beyond 20 nautical miles. With the aforementioned surface trough, diurnally driven pockets of convection are expected to develop, especially where moisture quality is maximized. Saturday night through Thursday... In general, a weak to moderate surface pressure gradient will lead to moderate south southeasterly flow and moderate seas through the period. Small craft exercise caution conditions may be needed across the bay each afternoon evening, possibly across the near-shore waters, as well. Showers and thunderstorms continue to be possible each day with ample environmental moisture over the western gulf waters. Bro watches warnings advisories Tx... None. Gm... None. This product is also available on the web at: http: weather.Gov rgv aviation update... Frye-55 |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| PTIT2 - 8779770 - Port Isabel, TX | 3 mi | 53 min | SSE 5.1 G 6 | 82°F | 83°F | 1011.5 hPa | ||
| PCGT2 - 8779748 - South Padre Island CGS, TX | 4 mi | 53 min | SSE 2.9 G 4.1 | 81°F | 1011.8 hPa | |||
| BZST2 | 5 mi | 53 min | SSE 4.1 G 5.1 | 81°F | 78°F | 1010.9 hPa | ||
| RLIT2 | 12 mi | 53 min | SSE 8 G 8.9 | 84°F | 84°F | 1010.9 hPa | ||
| PMNT2 | 33 mi | 53 min | 82°F | 88°F | 1011.7 hPa |
Wind History for South Padre Island C.G Station, TX
(wind in knots) EDIT (on/off) Help| 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | |
| Last 24hr | SE | SE | E G7 | E | E | E | SE | E | E | E G17 | E | E | E G11 | E | SE G13 | SE | SE | S | S G15 | S | S | S | SE | SE |
| 1 day ago | SE | SE | SE | SE | SE G11 | SE | E G11 | E G12 | E | E G14 | E G12 | E G11 | E | E G11 | SE G10 | E | SE | SE | SE | SE | SE | S | S | S |
| 2 days ago | SE | SE | SE | SE | E G10 | E | E | SE | SE | SE G12 | E | E G13 | E | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Port Isabel, Port Isabel-Cameron County Airport, TX | 7 mi | 72 min | SSE 3 | 7.00 mi | A Few Clouds | 80°F | 75°F | 87% | 1011.1 hPa |
| Brownsville, Brownsville / South Padre Island International Airport, TX | 17 mi | 72 min | SE 6 | 10.00 mi | Fair | 81°F | 79°F | 94% | 1010.9 hPa |
Link to 5 minute data for KSPL
Wind History from SPL (wind in knots)
| 11 PM | -12 PM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
| Last 24hr | SE | S | S | S | S | S | S | W | SW | S | SW | SW | SW | N | E | NE | NE | E | E | E | E | E | E | Calm |
| 1 day ago | S | S | S | SW | NW | N | N | N | E | NE | E | E | SE | NW | S | S | S | Calm | Calm | SE | SE | SE | SE | SE |
| 2 days ago | SE | SE | SE | SE | S | S | S | SW | NW | NW | SW | SW | S | SW G21 | SW G18 | S | S | S | S | S | SW | SW | S | S |
Tide / Current Tables for Port Isabel, Texas
EDIT Weekend mode (on/off) (on/off) Help One Week of DataPort Isabel
Click for Map
Fri -- 12:29 AM CDT Moonrise
Fri -- 01:06 AM CDT 1.12 feet High Tide
Fri -- 07:05 AM CDT Sunrise
Fri -- 09:58 AM CDT Last Quarter
Fri -- 01:59 PM CDT Moonset
Fri -- 03:51 PM CDT 0.18 feet Low Tide
Fri -- 07:57 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 12:29 AM CDT Moonrise
Fri -- 01:06 AM CDT 1.12 feet High Tide
Fri -- 07:05 AM CDT Sunrise
Fri -- 09:58 AM CDT Last Quarter
Fri -- 01:59 PM CDT Moonset
Fri -- 03:51 PM CDT 0.18 feet Low Tide
Fri -- 07:57 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1 | 0.9 | 0.8 | 0.6 | 0.4 | 0.3 | 0.2 | 0.2 | 0.2 | 0.3 | 0.5 | 0.7 | 0.8 | 1 | 1.1 |
Tide / Current Tables for Matamoros, Tamaulipas, Mexico
EDIT (on/off) Help One Week of DataMatamoros
Click for Map
Fri -- 12:00 AM CDT 1.56 feet High Tide
Fri -- 12:30 AM CDT Moonrise
Fri -- 02:56 AM CDT 1.54 feet Low Tide
Fri -- 06:33 AM CDT 1.57 feet High Tide
Fri -- 07:06 AM CDT Sunrise
Fri -- 09:58 AM CDT Last Quarter
Fri -- 02:00 PM CDT Moonset
Fri -- 03:41 PM CDT 0.62 feet Low Tide
Fri -- 07:58 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 12:00 AM CDT 1.56 feet High Tide
Fri -- 12:30 AM CDT Moonrise
Fri -- 02:56 AM CDT 1.54 feet Low Tide
Fri -- 06:33 AM CDT 1.57 feet High Tide
Fri -- 07:06 AM CDT Sunrise
Fri -- 09:58 AM CDT Last Quarter
Fri -- 02:00 PM CDT Moonset
Fri -- 03:41 PM CDT 0.62 feet Low Tide
Fri -- 07:58 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 1.6 | 1.6 | 1.5 | 1.5 | 1.5 | 1.6 | 1.6 | 1.6 | 1.5 | 1.5 | 1.4 | 1.2 | 1 | 0.9 | 0.7 | 0.6 | 0.6 | 0.7 | 0.8 | 0.9 | 1.1 | 1.3 | 1.5 | 1.6 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES 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 (9,2,3,4)
(on/off) Help
Ground Weather Radar Station Brownsville, TX
(on/off) Help
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. |