- Dangerous flooding has intensified across Texas after days of relentless rain, as forecasters warned locals to 'move to higher ground now.'
More than a foot of rain has drenched parts of West Texas and the Texas Hill Country this week, with most of it falling between Tuesday and Wednesday evening.
The relentless downpours have sent multiple rivers, including the Guadalupe, surging to dangerous levels.
At least one person has been killed in catastrophic flash flooding across south-central Texas, according to Governor Greg Abbott.
The National Weather Service in San Antonio warned that a 'large and deadly flood wave' was barreling down the Guadalupe River.
Several more inches of rain are expected through Thursday night in parts of central Texas before the heaviest rain shifts farther west.
AccuWeather Expert Meteorologist Tyler Roys said: 'Water always finds its way to the river. 'But when a storm produces that much rain across a whole watershed at once, the river doesn't just rise, it surges, almost like a tsunami.'
The emergency is unfolding along the same river that devastated Texas Hill Country last July, when catastrophic flooding killed 25 girls, two teenage counselors and a longtime director at Camp Mystic.
'Motorists should never drive through flooded roads. Water may be deeper than it appears and can cause a vehicle to stall, float or suffer severe electrical damage,' AccuWeather said.
'Rising water can quickly submerge a vehicle, and the road beneath may have been washed away.'
Texas Governor Greg Abbott has issued disaster declarations for dozens of counties.
As of Wednesday evening, just over six million Texas residents in 57 counties were under a National Weather Service flood watch that was scheduled to continue through early Thursday night.
Watches for 34 of those counties were scheduled to expire Friday evening.
Some of the highest rainfall totals so far have been in Uvalde County, which normally gets about 23 inches (58 centimeters)