Victoria Nelson with her children Autum Nelson, 2, Shawn Nelson, 7, and Asia Nelson, 6, line up to board a bus to evacuate Lake Charles, La., Wednesday, Aug. 26, 2020, ahead of Hurricane Laura.
Laura strengthened Wednesday into a menacing Category 4 hurricane, raising fears of a 20-foot storm surge that forecasters said would be "unsurvivable and capable of sinking entire communities.
Authorities implored coastal residents of Texas and Louisiana to evacuate and worried that not enough had fled.
Storm surge warnings were in effect from Freeport, Texas, to the mouth of the Mississippi River.
Forecasters said storm surge topped by waves could submerge entire towns.