(CNN) The Caribbean island of Dominica has been "devastated" by Hurricane Maria, the country's Prime Minister tells CNN. The powerful storm, which made landfall Monday night, has since been downgraded to a Category 4 with sustained winds of 155 mph. After it passes over Dominica it is on course to score a direct hit on the US territory of Puerto Rico -- the first hurricane of its strength to do so in 85 years. "We're just waiting for daybreak to do an assessment of the damage," Dominica Prime Minister Roosevelt Skerrit told CNN's Rosemary Church. "Our first order of business will be search and rescue to ensure we can account for every single citizen and residents who were on the island during this really devastating hurricane."Dominica PM says "my roof is gone"After Dominica, the storm is expected to hit Puerto Rico
_ made landfall on Dominica late Monday, coming ashore at 9:15 p.m. Hours before _'s expected landfall on Dominica -- and just over week after the island was brushed by Irma -- Skerrit urged residents to take any belongings that could become dangerous projectiles indoors. Rosselló ordered evacuations ahead of deteriorating conditions, telling CNN that extensive preparations had been made to mitigate _'s potential impact.