She has been called 新人お天気おねえさん / Shinjin Otenki Onee-san (Newcomer Weathergirl) and 女子アナさん / Joshi Ana-san (Ms. Female Announcer; ana here being shortened form of "announcer" (アナウンサー)) in the text, hence her name.
She's a newly employed announcer at a so-far unnamed TV network who occasionally serves as a weathergirl.
