878 
fxus64 kbro 231530 
afdbro 


Area forecast discussion 
National Weather Service Brownsville Texas 
930 am CST Monday Nov 23 2009 


Discussion...made slight adjustments to high temperatures for today 
and removed mention of fog now that skies have cleared. Cold front 
still expected to pass through deep south Texas tomorrow morning... 
producing showers and thunderstorms and temperatures falling during 
the late morning and afternoon hours of Tuesday. Storm Prediction 
Center bearish on strong to severe thunderstorms with frontal passage 
..so no rough weather expected this time tomorrow. Another cold 
front may pass through at the very end of this month. For now... 
updated zone forecast issued a short time ago. 
&& 


Marine...buoy020 reports light east southeast winds and seas around 
1 foot this morning. Southeast winds will increase to moderate today 
due to pressure falls upstream. Exercise caution conditions will be 
possible this afternoon. Winds will increase to around 15 knots near 
the coast and on the Laguna Madre...and to between 15 and 20 knots 
farther offshore. 


A cold front will sweep through the coastal waters beginning around 
noon Tuesday...with north winds of 25 to 30 knots and higher gusts. 
Small Craft Advisory conditions expected. Seas will build up to 9 
feet in the Gulf Tuesday evening. The front will be accompanied by 
squall line showers and thunderstorms. Winds will decrease to 
moderate on Wednesday...but another surge of high pressure on 
Thursday could cause marine winds to increase to around 20 knots 
through Thursday night. Winds will decrease and veer next Friday as 
high pressure overhead shifts east and low pressure develops 
upstream. 
&& 


Aviation...VFR conditions are expected much of today...but 
increasing cloud cover will develop this evening and tonight ahead 
of an approaching cold front. Higher dewpoints will set up a fog 
scenario overnight as winds drop off. Isolated showers moving ashore 
will also be possible overnight...increasing Tuesday a... 
area thunderstorms possible Tuesday afternoon. 
&& 


Preliminary point temps/pops... 
Bayview/Port Isabel 79 68 75 59 / 0 50 70 30 
Brownsville 80 67 76 57 / 0 50 70 30 
Harlingen 80 66 75 57 / 0 40 70 30 
McAllen 82 66 75 54 / 0 30 60 30 
Rio Grande City 81 63 70 51 / 0 20 60 10 
South Padre Island 75 66 75 60 / 0 50 70 10 
&& 


Bro watches/warnings/advisories...none. 
&& 


$$ 


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


Synoptic/grids...tomaselli-66 
marine/aviation...Miller-54 
mesoscale...Vega