NOAA’s 2005 Atlantic hurricane season outlook indicates a 70% chance of an above-normal hurricane season, a 20% chance of a near-normal season, and only a 10% chance of a below-normal season. This outlook is produced by scientists at the National Oceanic and Atmospheric Administration's (NOAA) Climate Prediction Center (CPC), Hurricane Research Division (HRD), and National Hurricane Center (NHC). See NOAA’s definitions of above-, near-, and below-normal seasons.

The outlook calls for 12-15 tropical storms, with 7-9 becoming hurricanes, and 3-5 of these becoming major hurricanes. The likely range of ACE index is 120%-190% of the median. This prediction reflects a very likely continuation of above-normal activity that began in 1995.

The predicted 2005 activity reflects 1) an expected continuation of conditions associated with the tropics-wide multi-decadal signal, which has favored above-normal Atlantic hurricane seasons since 1995, and 2) an expected continuation of warmer sea surface temperatures in the tropical Atlantic Ocean than can be accounted for by the multi-decadal signal alone. The outlook also reflects the expectation of ENSO-neutral conditions (no El Niño or La Niña) during August-October, the peak months of the hurricane season. An updated Atlantic hurricane outlook will be issued in early August.