Updated 130pm CDT Tuesday / 10 July 2012
…. A Continued Unstable Air Mass and Better Rain Chances through Mid Week ….
…. Beneficial Rains for Parts of Our Area with An Additional 1 to 2 Inches Possible ….
On this Tuesday… a surface high pressure area is located over the southeastern USA and the northeastern Gulf of Mexico. A cold front extends southwestward from western Tennessee southwestward to northwestern Louisiana and over south central Texas. Texas. As a result of this pressure pattern, a variable.. mostly southerly.. surface wind is prevailing across our area.
In the upper levels of the atmosphere, the upper high pressure ridge, acting like a lid on the atmosphere, continues broadly to the north of the area with upper level low pressure area from the lower Mississippi Valley westward into east Texas. As a result of the upper air wind flow, the upper level winds are light northerly over our area.
A moist tropical and unstable air mass continues across the area. I will continue the good rain chances through tomorrow as the weak cold front washes out overhead. This continues to increase the atmospheric lift in the moist tropical unstable air mass.
Computer guidance has consistent in the forecast rainfall amounts for this event with beneficial rainfall possible. Official NWS forecast rainfall amounts are in the 1 to 2 inch range for south central Texas between now and Friday.
Partial clearing.. lower rain chances and warmer temperatures are expected once again by late week through the weekend.
For Austin and south central Texas… tonight will see a cloudy sky with scattered to numerous rain showers and thunderstorms with lows in the 70s. Southerly wind. For tomorrow, mostly cloudy with scattered to numerous rain showers and thunderstorms with highs in the 80s to near 90. Southerly wind.
Have a good Tuesday night and Wednesday…
Meteorologist Troy Kimmel