Tropical Meteorology Real-Time Forecast Accuracy (Average Error based on Real-Time Forecasts)

The years where a particular forecast were issued are in parentheses


December Forecast - No Longer Issued

Named Storms: ± 4.3 (1992-2011)
Named Storm Days: ± 30.2 (1992-2011)
Hurricanes: ± 3.0 (1992-2011)
Hurricane Days: ± 14.9 (1992-2011)
Major Hurricanes: ± 1.7 (1992-2011)
Major Hurricane Days: ± 5.4 (1992-2011)
Net Tropical Cyclone Activity: ± 62.8 (1992-2011)


April Forecast

Named Storms: ± 4.3 (1995-2013)
Named Storm Days: ± 30.7 (1995-2013)
Hurricanes: ± 3.3 (1995-2013)
Hurricane Days: ± 15.4 (1995-2013)
Major Hurricanes: ± 1.7 (1995-2013)
Major Hurricane Days: ± 5.4 (1995-2013)
Net Tropical Cyclone Activity: ± 63.1 (1995-2013)


June Forecast

Named Storms: ± 2.9 (1984-2013)
Named Storm Days: ± 21.3 (1984-2013)
Hurricanes: ± 2.3 (1984-2013)
Hurricane Days: ± 12.1 (1984-2013)
Major Hurricanes: ± 1.5 (1990-2013)
Major Hurricane Days: ± 4.5 (1991-2013)
Net Tropical Cyclone Activity: ± 48.8 (1991-2013)


August Forecast (Only Includes TC Statistics Occurring after 31 July)

Named Storms: ± 2.5 (1984-2013)
Named Storm Days: ± 17.9 (1984-2013)
Hurricanes: ± 1.9 (1984-2013)
Hurricane Days: ± 10.2 (1984-2013)
Major Hurricanes: ± 1.0 (1990-2013)
Major Hurricane Days: ± 4.1 (1990-2013)
Net Tropical Cyclone Activity: ± 38.0 (1990-2013)