El Nino is gradually disappearing in the equatorial Pacific Ocean. It occurs about once ever four to five years and is located in the tropical waters of the Pacific Ocean. El Nino occurs as normal trade winds diminish for a short period of time. It allows ocean temperatures to warm well above normal. The condition typically lasts for about several months before finally losing its punch. El Nino causes chilly and wet weather across the South and that is certainly what happened in eastern North Carolina during the past winter. It also tends to limit the number of tropical storms and hurricanes during the late summer and fall. The latest Pacific water profile show water temperatures returning to near normal. Current forecasts suggest that La Nina will likely develop by late summer and that could mean an increase in tropical activity this year. La Nina occurs when the Pacific Ocean equatorial waters are cooler than normal.