(CNN) -- A search will continue Thursday in the Black Hills of South Dakota for a Nebraska family that has been missing since March 20.
Officials are concentrating their search for the Schade family in the Black Hills of South Dakota.
Investigators think Matthew Schade of Creighton, Nebraska; his wife, Rowena; and their two children -- a daughter, 11, and a son, 8 -- might have gone camping on U.S. Forest Service property in the Black Hills.
Schade had visited the area in the past, and the family's Ford Taurus was found nearby in Silver City, South Dakota, on Tuesday, March 31, by the Pennington County Sheriff's Office.
"The Forest Service property is a popular camping area, although, you usually don't see people camping out there this time of year," said Maj. Brian Mueller of the sheriff's office.
Two major blizzards have hit western South Dakota in the past two weeks.
"The last blizzard on Monday of this week rolled in real fast," Mueller said.
The family was last seen in Knox County, Nebraska, which includes the family's hometown of Creighton.