We have all heard the phrase, "the heavens opened up." Well, that happened to the City of Marble Falls on the night of June 26, 2007, and the following morning. Torrential rains of 17 to 19 inches flooded parts of Burnet County, including the City of Marble Falls.
 
On June 26, a combination of a low pressure trough across most of Texas, and a southerly wind bringing very moist air north from the Gulf, produced an unstable atmosphere over central Texas. By 10 pm, the unstable weather stalled over Burnet County, causing the same storms to move repeatedly over the same area, in a condition referred to by meteorologists as "training."
 
Around 2 am, an LCRA rain gauge located six miles east-northeast of Marble Falls measured nearly two inches of rain every fifteen minutes. The City of Austin's Drainage Control Manual shows that this intensity of rainfall exceeded the 500-year return frequency for central Texas -- in other words a phenomenal rain event. The rain storm began to subside around 2 am and most of the rain ended about 5 am.

(The balance of this article may be found by clicking on this link )