A powerful storm flooded and knocked out power in households in Far East Russias Sakhalin region, authoritiessaid Friday.Video shared on social mediashowed heavy rains and flooding in the regions largest city of Yuzhno-Sakhalinsk.More than 5,000 residents were left without electricity after emergency crews restored power for 13,500 people,according to the Sakhalin regions administration.There were no casualties, the Sakhalin regions emergency situations ministrysaid.Governor Valery Limarenko imposed a city-wide state of emergency and additional crews were dispatched to deal with the flooding.Regional emergency officialsforecast further flooding in parts of Yuzhno-Sakhalinsk into Friday evening.Russia's Far East regions have faced intense storms in recent months, with scientists saying that the onset of El Nino, a climate pattern that warms sea surface temperatures, is likely contributing to more powerful storms.The Primorye region, which had for weeks been under a region-wide state of emergency due to flooding caused by typhoons, was hit particularly hard in September and August.