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Area Forecast Discussion
Issued by NWS Brownsville, TX
Issued by NWS Brownsville, TX
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314 FXUS64 KBRO 010516 AAA AFDBRO Area Forecast Discussion...UPDATED National Weather Service Brownsville TX 1216 AM CDT Mon Jul 1 2024 ...New AVIATION... .SHORT TERM... (Tonight through Monday night) Issued at 218 PM CDT Sun Jun 30 2024 A tropical disturbance in the southern Bay of Campeche could become a Tropical Cyclone before making landfall in Mexico. The NHC has an 80% chance for tropical cyclone development in the next 48 hours. However, the system is far enough south that no additional impacts are expected for Deep South Texas. The dominant feature for the short term period will be an upper- level ridge over North Texas, that will slowly shift east through the period. As the deep tropical moisture moves out of the area tonight and is replaced with drier mid level flow, rain chances are expected to diminish and remain near zero through the remainder of the period. Hot temperatures are expected to continue through the period, with high temperatures in the mid to upper 90s Monday afternoon. Heat indices are expected to peak around 109 Monday afternoon, likely remaining just below criteria for a Heat Advisory, though a Special Weather Statement may be needed. Temperatures tonight are expected to fall into the upper 70s to low 80s. Overnight lows Monday night are expected to range from the mid to upper 70s. && .LONG TERM... (Tuesday through next Sunday) Issued at 218 PM CDT Sun Jun 30 2024 The mid-level ridge that is centered over the ArkLaTx region will continue to produce subsidence over Deep South Texas and the Rio Grande Valley through the majority of the long term forecast period. As such mostly rain free conditions and above normal temperatures are expected. Meanwhile, the southeasterly flow is expected to also continue through the long term period, which will transport more warm and moist air into the area as well. As for the temperatures, starting with the high temperatures for the long term forecast period, the range is expected to be mostly in the 90s, but a few places could get into the triple digits. The heat indices are not expected to meet Heat Advisory criteria during the period, but Special Weather Statements could still be issued as the range of the heat indices will be 105 to 109. As for the low temperatures, they are expected to stay mostly in the 70s, however a few places could get into the low 80s. Finally, Hurricane Beryl, currently a category 4 major hurricane is approaching the Windward Islands and is forecasted to reach the Yucatan Peninsula towards the end of the work week. Beryl is then expected to enter the Gulf of Mexico by next weekend. At this point the track is too uncertain to say where Beryl will be heading, but interests along the Lower Texas Coast should continue to monitor the progress of this system. && .AVIATION... (06Z TAFS) Issued at 1212 AM CDT Mon Jul 1 2024 Convection is ending across Deep South Texas and the Rio Grande Valley, and MVFR to VFR will prevail through the overnight hours. On Monday, VFR will prevail with light winds. Convection cannot be ruled out, but it is forecast to be too isolated to warrant inclusion in the TAFs at this time. && .MARINE... Issued at 218 PM CDT Sun Jun 30 2024 Tonight through Monday night...High pressure is expected to remain in place over the Northern Gulf through the period, allowing conditions to improve over the Coastal Gulf waters. Elevated seas tonight are expected to subside by Monday morning, with light to moderate seas continuing for the remainder of the period. A Small Craft Advisory remains in place for the Gulf waters tonight The NHC has an 80% chance for tropical cyclone development in the next 48 hours over the Bay of Campeche, however the system is far enough south that no impacts are expected for the Lower Texas Coast. Tuesday through Next Sunday...With the high pressure in control over the Gulf of Mexico, favorable conditions are expected through next Sunday. Light to moderate southeasterly winds and low to moderate seas are expected through the period. Current model guidance indicates that Beryl will be entering the Gulf of Mexico sometime next weekend. All interests along the Lower Texas Coast should monitor the progress of this system. && .PRELIMINARY POINT TEMPS/POPS... BROWNSVILLE 79 95 80 95 / 0 10 0 10 HARLINGEN 75 97 76 96 / 0 0 0 10 MCALLEN 78 99 79 98 / 0 0 0 0 RIO GRANDE CITY 76 98 78 98 / 0 0 0 0 SOUTH PADRE ISLAND 82 88 83 88 / 0 0 0 10 BAYVIEW/PORT ISABEL 77 92 79 93 / 0 0 0 10 && .BRO WATCHES/WARNINGS/ADVISORIES... TX...High Rip Current Risk until 7 AM CDT this morning for TXZ451-454- 455. GM...Small Craft Advisory until 7 AM CDT this morning for GMZ150-155- 170-175. && $$