The CH-53E Super Stallion helicopter was "reported overdue" to Marine Corps Air Station Miramar Tuesday night. The helicopter departed from Creech Air Force Base near Las Vegas and was en route to Miramar, in the San Diego area.
The Marines asked for help from the San Diego County Sheriff’s Department and Civil Air Patrol.
The sheriff's department said it received a call at 1:50 a.m. and sent its own helicopter to search, but the helicopter wasn't able to reach the area due to the atmospheric river storm hitting the region. The sheriff's department said it then sent off-road vehicles to navigate the rough terrain.
The Marines said the helicopter was discovered at 9:08 a.m. Wednesday.
Rescue efforts are ongoing.