SANTA FE, N.M. (AP) — Gov. Susana Martinez has activated the New Mexico Emergency Operations Center in preparation for potential flooding statewide. Rio Arriba, Sierra, Dona Ana and Eddy counties have been hit with heavy rain, which is expected to continue throughout the week. Martinez has directed the New Mexico Department of Public Safety, the Department of Homeland Security and Emergency Management, the Department of Transportation and the New Mexico Department of Health to monitor and assist in response as needed. Carlsbad Caverns National Park closed early Tuesday at 4 p.m.