Two updated forecasts for the 2013 Atlantic Hurricane Season slightly reduce the number of named storms expected this year, but there is no change in outlook for another above-average season.

The National Hurricane Center released its August update calling for an above average hurricane season of 13-19 named storms, including 7-9 hurricanes and 3-5 major hurricanes. In May, NHC forecast 13-20 named storms, including 7-11 hurricanes and 3-6 major hurricanes. The weather service says there is a 70 percent probability of each of the ranges of activity.

Factors causing the increased intensity are reduced trade winds over the Caribbean Sea and the tropical North Atlantic through September, which will influence cyclone activity in the Atlantic. Also, forecasters expect Atlantic sea surface temperatures to be slightly above normal.