Abstract: A portable severe weather shelter for use in connecting to an existing housing structure supported by a ground surface is disclosed. The portable severe whether shelter comprises a shell, a connector and an anchor. The shell defines an interior cavity and an entrance opening in communication with the cavity, the cavity sized and oriented to temporarily accept at least one adult substantially surrounded by the shell. The connector has a release portion and is adapted to connect the shell to the housing structure wherein the release portion is configured to tear under a severe weather event to separate the shell from the housing structure. The anchor device adapted to removably secure the shell to the ground surface.