Marine Weather and Tides
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.
|Sunrise 5:18AM||Sunset 6:06PM||Monday June 21, 2021 12:28 AM CST (06:28 UTC)||Moonrise 3:58PM||Moonset 3:02AM||Illumination 86%|
7 Day Forecast for Marine Location Near South Point, TXHourly EDIT Help
Area Discussion for - Brownsville, TX  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS64 KBRO 210543 AAB AFDBRO
Area Forecast Discussion . UPDATED National Weather Service Brownsville TX 1243 AM CDT Mon Jun 21 2021
DISCUSSION. Updated for latest aviation discussion below.
AVIATION. Satellite loops continue to show lower clouds increasing across the area with MVFR cigs expected to be the predominate flight category overnight. Some occasional breaks in the ceilings is possible. Visibility may also be reduce to MVFR with some light haze in and around the air terminals. Skies to break up west to east mid to late morning with some lingering cigs in the vicinity of KHRL and KBRO until later in the afternoon. A few coastal showers are possible with one or two working their way near KBRO but not enought coverage to mention in the TAF at this time. Breezy conditions continue overnight with stronger wind gusts during the day for all three airports with frequent gusts to 25 knots and occasional higher.
PREV DISCUSSION. /issued 624 PM CDT Sun Jun 20 2021/
DISCUSSION . Updated for latest aviation discussion below.
AVIATION . Scattered lower level clouds generally between 2500-3000ft will continue for the next few hours before low level cloud cover increases overnight, resulting in MVFR ceilings that will persist through around midday Monday. Ceilings will then scatter out Monday afternoon leading to VFR conditions. South- southeasterly winds will remain moderate to breezy overnight, with little change in wind speed and direction through the TAF period.
PREV DISCUSSION . /issued 240 PM CDT Sun Jun 20 2021/
SHORT TERM (Now through Monday Night): Upper level moisture courtesy of of Tropical Depression Dolores and a 500 mb trough will continue to provide a chance of showers and thunderstorms across central and eastern portions of deep south Texas this evening. The 500 mb trough that is draped across east Texas will begin to shift eastward tonight into Monday and slightly drier air will begin to filter in. Temperatures on Monday will be hot, especially across western portions of the CWA with highs expected to reach 100 to 106 degrees Mon afternoon. The warm temperatures coupled with high dewpoints will result in heat index values reaching 111 degrees across much of the region and heat index values above 115 degrees across western and southern portions of the CWA. Heat Advisories are likely for all but the coastal areas tomorrow with an Excessive Heat Warning for portions of Hidalgo, Starr and Zapata counties in effect tomorrow as well. Monday night, a cold front will move into central Texas, but remain well north of the CWA. This boundary along with ample moisture still in place and midlevel energy will allow for a chance of showers and thunderstorms to develop. Overnight conditions tonight and Monday will remain sultry with lows generally in the low 80s.
LONG TERM (Tuesday through Sunday): A weak cold front will push into Central Texas by Monday night or Tuesday morning. Supported by a pinched off mid level energy parcel, convection will develop over the Sierra Madre Orientals Monday night, with activity over the Upper Valley also possible. Lingering unsettled weather will continue on Tuesday as the front retreats north and mid level energy to the south gets absorbed. Wednesday day will see improvement, with sea breeze conditions likely. Mid level ridging centered over West Texas and New Mexico will build more confidently over Texas late in the week. A mid level trough will dig south over the Plains late in the week, setting up a relatively brief Rex looking block over the West on Saturday and Sunday as mid level high heights shift to the Southeast United States. Despite this interesting mid level dance, local weather will reflect fairly typical summer conditions, with near to slightly warmer than normal temperatures. Best rain chances after Tuesday will be along the coast. Heat index values will peak at 103 to 108 degrees through the end of the week, except 105 to 110 degrees on Wednesday afternoon.
MARINE: Now through Monday Night: A relatively tight pressure gradient along the lower Texas coast will continue to to increase winds and seas today and tonight. Small Craft Advisories are in effect on Laguna Madre into this evening and on the Gulf waters through tonight with SCA/SCEC conditions expected into Monday. Monday night, the pressure gradient begins to weaken, though SCEC conditions will still be possible, especially on the Gulf waters. Isolated to scattered showers and thunderstorms will also be possible through the period.
Tuesday through Friday Night: Light to moderate southeast winds and moderate seas will prevail through the long term. Isolated to scattered showers and thunderstorms will be possible from time to time. Low pressure troughing will exist initially, extending north along the North Mexican coast. As the week evolves, however, high pressure will become dominant, solidifying the southeast flow.
PRELIMINARY POINT TEMPS/POPS. BAYVIEW/PORT ISABEL 81 90 78 91 / 20 60 40 20 BROWNSVILLE 82 93 80 93 / 10 60 40 30 HARLINGEN 81 93 77 93 / 20 60 40 30 MCALLEN 81 93 77 94 / 20 60 40 30 RIO GRANDE CITY 80 96 77 97 / 20 60 40 20 SOUTH PADRE ISLAND 83 87 82 87 / 10 50 40 20
BRO WATCHES/WARNINGS/ADVISORIES. TX . Excessive Heat Warning from 1 PM this afternoon to 7 PM CDT this evening for TXZ248-252-253.
GM . Small Craft Advisory until 7 AM CDT this morning for GMZ150-155- 170-175.
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