Norwich benefits from East Anglia's dry climate, one of the lowest-rainfall regions in the UK, giving it more clear nights than most British cities. Bortle 5–6 in the city drops to Bortle 3–4 quickly heading into rural Norfolk, and the north Norfolk coast offers dark skies with an open sea horizon to the north — useful for aurora during stronger storms. The flat fenland terrain provides excellent low horizons in all directions, ideal for catching rising planets and low-declination objects.