Waves of rain and thunderstorms are expected to continue over portions of the South this week, with forecasters warning of flash flooding alongside other threats that accompany severe weather, especially across Texas, Louisiana and Mississippi. In Texas, a search-and-rescue effort recovered the body of a 10-year-old girl who was swept away by floodwaters on Monday.

Here are the key things to know:

• Heavy rain is expected throughout Tuesday and Wednesday.

• The ground is saturated from recent storms, and additional precipitation may quickly lead to flooding.

Heavy storms hit Texas on Monday.

In Brenham, Texas, a city of about 17,000 residents that is between Austin and Houston, a search-and-rescue effort recovered the body of Devah Woods, a 10-year-old girl, who was last seen on Monday as storms moved through, authorities said on Tuesday.

“The response from everyone was overwhelming,” said Atwood Kenjura, the Brenham mayor, at a news conference, adding his gratitude to the rescue workers.

The city had employed drones, swift water rescue teams and canine units in the rescue effort, according to the Brenham Fire Department.

Thunderstorms were tearing across Texas and Louisiana on Tuesday.

Severe thunderstorms unleashed heavy rain, damaging winds and large hail (some as large as Ping-Pong balls) in Texas and Louisiana on Tuesday.