Plans to launch a Navy communications satellite aboard an Atlas 5 rocket early Monday have been interrupted by Tropical Storm Erika, an unpredictable cyclone with its sights on Florida.

Three days after launching from Cape Canaveral, SpaceX’s Dragon cargo craft has arrived at the International Space Station with around 5,600 pounds of supplies and experiments. The automated, unpiloted supply ship was snared by the station’s robotic arm at 7:21 a.m. EST (1221 GMT) Saturday.

A Russian cosmonaut, his Canadian co-pilot and a NASA flight engineer boarded their Soyuz spacecraft, undocked from the International Space Station and plunged back to Earth Monday evening, landing on the balmy steppe of Kazakhstan to close out an action-packed 204-day mission.