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: ± 4.2 (1995-2014)
Named Storm Days: ± 29.2 (1995-2014)
Hurricanes: ± 3.3 (1995-2014)
Hurricane Days: ± 14.9 (1995-2014)
Major Hurricanes: ± 1.7 (1995-2014)
Major Hurricane Days: ± 5.2 (1995-2014)
Net Tropical Cyclone Activity: ± 61.0 (1995-2014)


June Forecast

Named Storms: ± 2.9 (1984-2014)
Named Storm Days: ± 20.7 (1984-2014)
Hurricanes: ± 2.3 (1984-2014)
Hurricane Days: ± 11.8 (1984-2014)
Major Hurricanes: ± 1.4 (1990-2014)
Major Hurricane Days: ± 4.4 (1991-2014)
Net Tropical Cyclone Activity: ± 47.3 (1991-2014)


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

Named Storms: ± 2.4 (1984-2014)
Named Storm Days: ± 17.5 (1984-2014)
Hurricanes: ± 1.9 (1984-2014)
Hurricane Days: ± 10.0 (1984-2014)
Major Hurricanes: ± 1.0 (1990-2014)
Major Hurricane Days: ± 4.0 (1990-2014)
Net Tropical Cyclone Activity: ± 37.9 (1990-2014)