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Next 12 Hours

Forecast data from the National Digital Forecast Database.

5 Day Forecast

• Thursday
• 
• High: 91 °
• Low: 73 °
• Thunderstorm

• Friday
• 
• High: 91 °
• Low: 72 °
• Chance of a Thunderstorm

• Saturday
• 
• High: 91 °
• Low: 72 °
• Chance of a Thunderstorm

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

• Monday
• 
• High: 90 °
• Low: 73 °
• Partly Cloudy

Area forecast discussion 
National Weather Service Houston/Galveston Texas 
1219 PM CDT Thursday may 23 2013 


Discussion... 
see aviation for 18z taf issuance. 


&& 


Aviation... 
still isolated MVFR conditions at some sites this afternoon. Ceilings 
should lift above MVFR to VFR in a couple of hours. NAM and GFS 
dewpoint depressions fields hinting at fog again Friday morning 
as was the case this morning. Should see widespread IFR conditions 
tomorrow morning with LIFR conditions confined to lbx and cxo. 
Winds will then back more easterly tomorrow as surface high 
pressure weakens. 23 


&& 


Previous discussion... /issued 1057 am CDT Thursday may 23 2013/ 


Discussion... 
decided to increase probability of precipitation a bit for the update...mainly just for 
inland portions of southeast Texas for the afternoon/early evening hours. Isolated 
precipitation yesterday evening along with the breakable caps (depicted from 
local 12z soundings) and short term models all playing into the 
changes for the afternoon grids. 41 


Previous discussion... /issued 340 am CDT Thursday may 23 2013/ 


A weak trough of low pressure over eastern New Mexico and high 
pressure over the northern Gulf Coast will maintain onshore winds 
through the weekend. Hi res models all show isolated to scattered 
rain showers/thunderstorms and rain developing with daytime heating and forecast soundings show 
a breakable cap so added slight chance probability of precipitation for today and again 
Friday. Upper level ridging begins to amplify over East Texas but 
the strength of the ridge just doesn't look strong enough to 
produce strong capping to limit convection. A subtle weakness at 
500 mb will slowly move across the state on Sat/sun. This feature 
will likely produce some scattered convection mainly over the 
northern and western half of the area on Sunday. A deep upper 
level trough will develop off the West Coast early next week and 
move slowly to the east. As the trough deepens...an upper level 
ridge over Texas will amplify. This should keep things subsident 
and relatively dry over southeast Texas. Mex numbers look a little cool 
considering the position of the upper level ridge so went a few 
degrees warmer than mex guidance. 43 


&& 


Preliminary point temps/pops... 
College Station (cll) 72 90 70 90 69 / 20 20 10 20 10 
Houston (iah) 72 90 71 89 71 / 20 20 10 20 10 
Galveston (gls) 74 83 73 84 74 / 10 10 10 10 10 


&& 


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


$$ 


Discussion...41 
aviation/marine...23