Last year in March of 1999, the combination of heavy rains and melting snows resulted in a series of floods and landslides as well.
(the combination of heavy rains and melting snows; resulted; in a series of floods and landslides; as well; T:Last year; T:in March of 1999)
the combination of heavy rains and melting snows
resulted
in a series of floods and landslides as well T:Last year T:in March of 1999