AUSTIN (KXAN) — After a night of what may prove to have been deadly flash flooding, more rain and thunderstorms developed Thursday afternoon and were forecast to expand across the area. More than 7 inches of rain fell near Oak Hill, and as much as 4 inches fell in just one hour early Thursday morning near Mansfield Dam, and downstream over Lake Austin. A total of six inches fell in that area.
The National Weather Service has extended the Flash Flood Watch until 7 a.m. Friday, and expanded it to include all of the KXAN viewing area except Mason and San Saba counties. A 40 percent chance of rain will continue Friday, with lower probabilities forecast this weekend.
Additional rainfall totals of 1-2 inches, with isolated 3-5 inch amounts will be possible. On already saturated ground, it will take less rainfall to trigger flash flooding of low water crossings and other flood-prone areas. Drivers should never attempt to cross flooded roads. Turn Around, Don’t Drown.
The clouds and rain should keep temperatures below normal–mainly in the 80s over the next 5-7 days, however, during periods with little rain and some sunshine, readings could easily top 90 degrees.