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Next 12 Hours

Forecast data from the National Digital Forecast Database.

5 Day Forecast

• Saturday
• 
• High: 84 °
• Low: 68 °
• Chance of T-Storms

• Sunday
• 
• High: 86 °
• Low: 66 °
• Partly Cloudy

• Monday
• 
• High: 88 °
• Low: 70 °
• Partly Cloudy

• Tuesday
• 
• High: 90 °
• Low: 70 °
• Partly Cloudy

• Wednesday
• 
• High: 90 °
• Low: 73 °
• Mostly Cloudy

Area forecast discussion 
National Weather Service Houston/Galveston Texas 
411 am CDT Sat may 25 2013 


Discussion... 
discussion... 
at 08z...a weak surface trough of low pressure was located from 
about Lufkin to Columbus and another boundary was located over East 
Texas from Lufkin to Lafayette. Rain showers/thunderstorms and rain were already developing 
over south central Texas in area with strong 700 mb convergence. 
850 mb moisture still looks rather plentiful today with 850 mb dew 
points between 13-16c. The best 850 convergence is over far West 
Texas. Forecast soundings not looking as unstable as yesterday. 
Capping remains weak and precipitable water values should hover between 1.5 and 
1.7 inches today. The hi-res models initialized poorly this 
morning so not much confidence in their solutions. Both the NAM 
and GFS bring a speed maximum across southeast Texas today with southeast Texas lying in a 
lfq. 300 mb winds also show a split over East Texas. Feel there 
are enough parameters in place to warrant at least chance probability of precipitation 
today despite the benign mass fields of the global models. 


The weakness at 500 mb will begin to scoot east of the area on 
Sunday. Some disagreement between the models on how fast this 
will occur. Feel most of the area will remain dry but will mention 
isolated rain showers/thunderstorms and rain over the north in case the circulation moves 
slower than expected. Upper level ridging will build into the 
region Monday-Tuesday with warm and drier conditions. An upper level 
trough off the Pacific coast will push east on Wed/Thu. The system 
will begin to shear out and southeast Texas looks to remain on the periphery 
of the upper trough. Will maintain slight rain chances on Wednesday/Thursday 
but it looks like most of the area will remain dry. Another upper 
level ridge will build into southeast Texas keeping the area warm and dry 
through next weekend. 43 


&& 


Marine... 
the chances for thunderstorms are better over and near Matagorda Bay 
today and this evening as an upper level disturbance moves across 
the central and eastern portions of the state. Do expect as the 
disturbance moves east of the state...that the thunderstorm chances 
will diminish by Sunday night. Otherwise...the onshore winds are 
expected to increase to caution levels by Tuesday as the surface 
pressure gradient increases across the Upper Texas coastal waters. 


40 


&& 


&& 


Preliminary point temps/pops... 
College Station (cll) 86 71 89 70 89 / 30 30 20 10 10 
Houston (iah) 88 71 88 71 88 / 20 20 10 10 10 
Galveston (gls) 85 74 84 74 85 / 20 20 10 10 10 


&& 


Hgx watches/warnings/advisories... 
Texas...none. 
GM...none. 
&& 


$$