Authorities say a 52-year-old Florida man was found dead Thursday in his stranded pickup truck along Interstate 10 near Beaumont, which is near Texas’ border with Louisiana. Jefferson County spokeswoman Allison Getz said that although floodwaters seeped into Mark Dukaj’s truck, investigators don’t believe he drowned, though they do believe his death is storm-related. An autopsy will determine the cause.

Hundreds of homes and other buildings in the Houston area have been damaged by the storm, bringing back unpleasant memories of Hurricane Harvey — which dumped more than 50 inches of rain on the area two years ago. Imelda, the first named storm to impact the area since then, has deposited more than 40 inches of rain in some spots as it churned across a region extending east from Houston to the Louisiana border.

Texas Gov. Greg Abbott has already declared a state of disaster for the counties impacted by Imelda  and officials in Harris County, which is home to Houston, were trying to determine if millions of dollars in uninsured losses were enough to trigger a federal disaster declaration.

The heaviest rainfall had ended by Thursday night in Southeast Texas, but forecasters warned that parts of northeast Texas, Arkansas, Oklahoma and Louisiana could see flash flooding as Imelda’s remnants shifted to the north.

Officials say two of the deaths from Imelda happened in the Houston area: an unidentified man in his 40s or 50s who drowned Thursday while driving a van through 8-foot-deep floodwaters and a man whose body was found in a ditch Friday and is believed to have drowned.