313
FXUS64 KBRO 200908
AFDBRO

Area Forecast Discussion
National Weather Service Brownsville TX
408 AM CDT Thu Jun 20 2024

...New SHORT TERM, LONG TERM, MARINE...

.SHORT TERM...
(Today through Friday)
Issued at 359 AM CDT Thu Jun 20 2024

Tropical Storm Alberto will continue to be a factor for the short
term period. As the system makes landfall it will begin to
weaken, allowing winds to subside slightly. Showers and
thunderstorms are expected to continue into the day, as the last
of the rain bands move onshore. Seas are expected to remain
elevated through the period, and will likely continue to produce
coastal hazards in the form of coastal flooding, high risk of rip
currents, and high surf.

Some lingering tropical moisture looks to keep rain chances
elevated through the remainder of the period. The additional
rainfall could continue to support a threat for flash flooding
through the period. The WPC has a slight risk of excessive
rainfall across Deep South Texas today, and a marginal risk
Friday.

&&

.LONG TERM...
(Friday night through Wednesday)
Issued at 359 AM CDT Thu Jun 20 2024

Upper-level high pressure over the southern US will continue to
funnel additional tropical moisture towards Deep South Texas.
Model guidance is continuing to suggest another tropical system
developing over the Southern Gulf this weekend, and the NHC has a
50% chance for tropical cyclone development within the next 7
days. If this system does end up developing, we could see
additional rainfall by early next week. Conditions look to finally
dry out by the end of the period, with heat taking back over,
potentially warranting heat advisories.

&&

.AVIATION...
(06Z TAFS)
Issued at 1232 AM CDT Thu Jun 20 2024

Showers and thunderstorms will continue to produce intermittent
MVFR to IFR conditions as the outer bands of Tropical Storm
Alberto continue to move through the area. Some improvement is
expected through the day as the Tropical Storm moves inland and
likely weakens. Heavy rain produced by these bands may briefly
lower visibilities. Finally, a Tropical Storm Warning is still in
place for BRO and HRL, and both sites may continue to see Tropical
Storm-Force wind gusts.

&&

.MARINE...
Issued at 359 AM CDT Thu Jun 20 2024

Hazardous marine conditions will continue today. As Tropical Storm
Alberto moves onshore, winds are expected to continue to decrease
through the day, allowing seas to begin subsiding. Light to
moderate winds and moderate seas are expected to return by the end
of the weekend and remain through the period. However, there is
some potential for another tropical system to develop in the
Southern Gulf this weekend, which could drastically change the
forecast. The NHC has a 50% chance for tropical cyclone formation
in the next 7-days.

&&

.PRELIMINARY POINT TEMPS/POPS...
BROWNSVILLE             89  80  91  78 /  90  80  90  90
HARLINGEN               89  77  91  74 /  80  80  90  80
MCALLEN                 89  78  91  77 /  90  80  90  70
RIO GRANDE CITY         86  77  89  75 /  90  80  90  70
SOUTH PADRE ISLAND      87  83  86  82 /  70  90  90  90
BAYVIEW/PORT ISABEL     89  79  89  78 /  70  80  90  80

&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...Flood Watch until 1 PM CDT this afternoon for TXZ248>255-351-
     353>355-451-454-455.

     Coastal Flood Warning until 7 PM CDT this evening for TXZ351-354-
     355-451-454-455.

     Wind Advisory until noon CDT today for TXZ351-354-355-451-454-
     455.

     High Rip Current Risk through Friday evening for TXZ451-454-455.

     High Surf Warning until 7 PM CDT this evening for TXZ451-454-455.

GM...Small Craft Advisory until 7 AM CDT Friday for GMZ130-132-135-
     150-155-170-175.

&&

$$

SHORT TERM...60-BE
LONG TERM....60-BE
AVIATION...60