00:00Federal flood forecasters are raising alarms for millions of Americans in the Ohio Valley
00:05and southern Appalachians this weekend.
00:07The Weather Prediction Center says precipitable water values are running 2 to 2.5 standard deviations above normal,
00:15meaning the atmosphere is saturated with moisture ready to drop as extreme rainfall.
00:20In northern Kentucky and southern Ohio, the ground is already soaked from recent rain,
00:25pushing flash flood guidance thresholds down to just 1 to 1.5 inches.
00:30That amount could fall in a single storm.
00:33Streams and rivers in these regions can rise with terrifying speed.
00:37Officials are warning residents, do not drive into flooded roads.
00:41Just 6 inches of water can sweep a vehicle off the road.
00:44If you are near a creek or low-lying area in these states this weekend, have an evacuation plan ready.
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