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Area forecast discussion 
National Weather Service Brownsville Texas 
904 am CST Sat Nov 21 2009 


Discussion...a cooler and drier west-northwest surface flow continues 
across deep south Texas with a marine SC deck persisting just along 
and offshore of Padre Island. The plentiful sunshine today should 
allow the daytime high temperatures to rebound somewhat today despite the 
cold air advection with the Mercury approaching the 80 degree mark later this 
afternoon. This is well reflected in the current zone forecast product wording and 
do no expect any major changes this morning. 
&& 


Aviation...the 3 local taf sites are reporting clear skies with a 
light west northwest wind this morning. The low broken to overcast cloud cover 
that was near the coast and across bro earlier this morning continues 
to erode away toward the east. Expect clear conditions to prevail today 
with a light to moderate northwest to north wind as high pressure 
noses in from the northwest. Light winds will veer east tonight into 
Sun morning with sky clear conditions prevailing. 
&& 


Marine...the 8 am observation from buoy020 indicates winds were 
west northwest around 16 kts gusting to around 21 kts and seas were 
around 7 feet with an 8 second period. A Small Craft Advisory continues 
for the near and offshore waters until 16z. Winds have diminished 
below criteria...but seas continue to remain around 7 feet offshore. 
Will likely let the advisory expire on time as further improvements 
are expected with time. A transition to scec conditions through midday 
into the afternoon hours today can be expected. High pressure will continue to 
build in from the northwest allowing for northwest winds to diminish 
over time. Seas are anticipated to gradually subside through this afternoon. 
High pressure maintains control through sun into Monday. A light to 
moderate northeast to east wind is expected through that time. Return 
flow from the southeast sets up later Monday as high pressure slides 
eastward. 
&& 


Preliminary point temps/pops... 
Bayview/Port Isabel 76 57 77 64 / 0 0 0 10 
Brownsville 79 56 79 61 / 0 0 0 10 
Harlingen 78 53 80 61 / 0 0 0 10 
McAllen 80 57 79 63 / 0 0 0 10 
Rio Grande City 80 57 78 64 / 0 0 0 10 
South Padre Island 75 60 73 67 / 0 0 0 10 
&& 


Bro watches/warnings/advisories...Small Craft Advisory until 10 
am CST this morning for gmz150-155-170-175. 


&& 


$$ 


This product is also available on the web at: 
http://www.Weather.Gov/Brownsville 


The graphicast product is also available on the web at: 
http://www.Weather.Gov/Brownsville/graphicast.Htm 


Synoptic/grids...60 
marine/aviation...57 
meso/graphicast...Vega