See Heartbreaking Photos From Hurricane Harvey In Texas

The disastrous path left by Hurricane Harvey in southeast Texas of United States has caused “catastrophic” and historic flooding that has left countless homes and businesses destroyed, at least two people dead and many more stranded as they attempt to escape the dangerous conditions.

Though it was downgraded to a tropical storm Saturday afternoon as it moved inland, the effect of Hurricane Harvey has left about 300,000 people without power as water floods the streets, creating eerie images of highways that now appear more like rivers than roads.

Officials urged caution in anticipation of “catastrophic and life-threatening flooding” in the days to come — particularly in southeast Texas, where the total accumulation of rain could be as high as 50 inches and “exceed any previous Texas rainfall record,” according to the National Weather Service Weather Prediction Center.

“The breadth and intensity of this rainfall are beyond anything experienced before,” the National Weather Service said in a statement Sunday. “Catastrophic flooding is now underway and expected to continue for days.”

Meanwhile, Houston’s sheriff’s office has said its 911 center has been “inundated” with calls as thousands try to flee from disastrous conditions — with some using social media to post their addresses to ask for help.