Updated 130pm CDT Monday / 23 July 2012
…. Isolated to Widely Scattered rain Showers and Thunderstorms Next Day or So ….
…. An Otherwise Dry Weather Pattern ….
…. A Tropical Air Mass Continues Across the Area ….
On this Monday… a surface high pressure area is located over the southeastern USA and the lower Mississippi Valley. A weak trough.. or line.. of low pressure extends southward from Eastern Colorado southward into eastern New Mexico. Another surface high pressure area is over western Colorado and northwestern New Mexico. As a result of this surface pattern, a 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 over the US central plains east southeastward into the Mississippi Valley. As a result of the upper air wind flow, the upper level winds are light to moderate southeasterly over our area.
A moist tropical air mass continues across the area and, for the most part, the large upper level high pressure area to the north is keeping our atmosphere stable. However, a weak disturbance is moving westward over the northwest Gulf of Mexico is resulting in isolated to widely scattered rain showers to our south and southeast and will likely do so for the next day or so.
Other than the isolated rain chances over the next day or so, it looks like a dry forecast for the next seven days. Afternoon high temperatures will continue to be at or above seasonal averages through the seven day forecast period.
For Austin and south central Texas… tonight will see a partly cloudy sky with lows in the 70s. Southerly wind. For tomorrow, partly cloudy with isolated to widely scattered rain showers and thunderstorms with highs in the 90s with a southerly wind.
Have a good Monday night and Tuesday…
Meteorologist Troy Kimmel