Updated 845am CDT Thursday / 14 March 2013
Little Change For Now ….
Our Next Cold Front Due Monday Night into Early Tuesday Morning ….
The Seven Day Forecast is Rain Free ….
On this Thursday… a surface high pressure area is over western Tennessee and northern Mississippi with a deepening surface trough.. or line.. of low pressure from southeastern Colorado and northwest Oklahoma and Texas southwestward to far west Texas around El Paso. Given this surface pressure pattern, surface winds are southerly across our area of Texas.
In the upper levels of the atmosphere, a broad upper air trough.. or line.. is located over the eastern half of the country with a building upper level ridge.. or line.. of upper air high pressure over the western USA. As a result of this upper air wind flow, our upper level winds are light northwesterly with winds over Austin at about 18,500 feet blowing about 20 to 25 mph.
The surface high.. now well east of the area.. will continue to move eastward into the southeastern USA. South southeasterly surface winds have returned to the area and will continue through the week and the weekend into early next week. Low level moisture will begin the return to the area with attendant late night and early morning low cloud cover by as early as the next couple of nights. This will continue.. with increased cloud cover and humidity.. through the weekend and into early next week.
Another cold front… still rather weak in nature.. is forecast to drift southward into our area by late Monday night into the predawn hours Tuesday morning. The upper air conditions do not appear favorable to push this front much further south than the Texas coast with the front lifting back northward as a warm front by Tuesday night into Wednesday. At this point, limited moisture.. instability and atmospheric lift will preclude any rain chances with this frontal passage through the local area.
Have a good Thursday night and Friday…
Meteorologist Troy Kimmel