Rebel attacks on the eastern oil city of Brega, meanwhile, stretched into their fourth day, with reports of pitched battles in the residential areas.
From the capital, bright flashes could be seen on the eastern horizon just after midnight, followed by a steady rumbling that went on for an hour. Planes could be heard crisscrossing the night sky lit up by a near full moon, and into today afternoon as well.
NATO said its forces had hit a military storage facility, along with three radar sites and an anti-aircraft missile launcher east of the capital. The alliance reported it flew a total of 110 sorties and carried out 45 strikes yesterday.
Despite the boost given by the recognition of the rebels and a pledge to transfer Libya's billions in frozen assets to rebel coffers, the struggle against Muammar Gaddafi has settled into a stalemate since the mass uprising broke out in mid-February.
The rebels have set up an interim administration in the eastern city of Benghazi and seized control of the port city of Misrata and much of the western Nafusa mountain range.
Gaddafi controls the rest of Libya from his stronghold in Tripoli.