Egypt has sent a military delegation to Libya to offer what a spokesperson described as "support and solidarity with the brotherly Libyan people", BBC Monitoring reports.
Headed by Egypt's army chief of staff Lt Gen Osama Askar, the group will operate an airlift, starting with three aircraft carrying medical aid and foodstuff as well as rescue teams. Another aircraft will help transport people killed or injured in the storm.
The spokesman posted pictures on Facebook showing the delegation being welcomed by several Libyan military commanders, including Khalifa Haftar, commander of the east-based Libyan National Army.
In another statement, the military spokesman said Egyptian President Abdul Fattah al-Sisi had directed his armed forces to "offer all types of humanitarian support including medical teams, rescue equipment and makeshift camps".