Reports from Roseville, Calif. (where the two rotaries are assigned), a few days ago, indicated that both rotaries (#209 & #211) were being "tested & steamed up", this past Tuesday, Jan. 10, 2017. Many times the rotaries are "tested & steamed up" for two main reasons: A) preparing for major storm/storms, and B) crew familiarization & training.
Also, for those inquiring minds, the rotaries are no longer "steam powered" (the wheel is driven by multiple locomotive traction motors, with electric power provided by an up-graded EMD F7B Unit highly modernized for the job, semi-permanently coupled at the rear of the rotary). The rotaries are, however equipped with steam generators in order to provide steam for heating and snow melting.