Bhubaneswar: Light to moderate rain or thundershowers are likely to occur in some parts of Nayagarh, Ganjam, Gajapati, Dhenkanal, Cuttack, Jajpur, Bhadrak, Balasore, Keonjhar, Mayurbhanj, Kandhamal, Malkangiri, Koraput, Rayagada, Angul and Boudh districts in the next three hours, the Meteorological Centre in Bhubaneswar said in a nowcast bulletin issued at 2.20 pm, Tuesday.