188 
FXUS64 KBRO 191123 AAA
AFDBRO

Area Forecast Discussion...UPDATED
National Weather Service Brownsville TX
623 AM CDT Tue Oct 19 2021

.DISCUSSION...Updated for latest aviation discussion below.

&&

.AVIATION...Light to variable southeasterly winds with partly
cloudy skies will continue today. VFR conditions are expected to 
prevail through the period.

&&

.PREV DISCUSSION... /issued 455 AM CDT Tue Oct 19 2021/ 

SHORT TERM (Today through Wednesday): As high pressure moves 
eastward out of eastern Texas, zonal flow replaces it. This will 
keep our weather quiet and rain-free through the short term period. 
Due to light winds and increasing dewpoints, patchy fog was kept for 
the Northern Ranchlands area for the early morning hours for Tuesday 
with a slight modification to how far south the fog would go. 
Currently, confidence is low for the air mass to be saturated enough 
for fog formation in the mid/lower Valley area. Since Tuesday night 
will be similar to Monday night, patchy fog over the Northern 
Ranchlands may be needed again. Southeasterly light to moderate 
winds will remain over the next couple of days with dewpoints 
steadily climbing back towards normal. Because of the increasing 
dewpoints and temperatures, Tuesday and Wednesday will start to feel 
warm and muggy again with highs in the upper 80s and dewpoints in 
the upper 60s.

LONG TERM (Wednesday Night through Monday): A mainly zonal flow
in the middle layers of the atmosphere will prevail through a 
majority of the period, with retrograding 500 mb high pressure 
developing over the Gulf of Mexico towards the end of the period.
This pattern will result in dry weather for a vast majority of the
BRO CWFA. Gradually warming temperatures are also anticipated,
with values running at well above normal levels throughout the
forecast period. 

MARINE (Today through Wednesday): Light southeasterly flow and low 
seas at 2 to 3 feet will prevail through the period. Mariners can 
expect favorable marine conditions through Wednesday.

Wednesday Night through Monday: Light to moderate winds and
generally moderate seas are expected through the period with 
Small Craft Exercise Caution and Small Craft Advisory not likely.

&&

.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL  85  71  87  71 /   0   0   0   0 
BROWNSVILLE          87  72  89  72 /   0   0  10   0 
HARLINGEN            88  69  90  70 /   0   0   0   0 
MCALLEN              90  70  92  71 /   0   0   0   0 
RIO GRANDE CITY      91  69  94  69 /   0   0   0   0 
SOUTH PADRE ISLAND   82  77  83  78 /   0   0  10   0 

&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...None.
GM...None.
&&

$$

This product is also available on the web at:
https://weather.gov/rgv

65-Soria/Aviation