SUMMARY OF 2010 ATLANTIC TROPICAL CYCLONE ACTIVITY AND VERIFICATION OF AUTHOR’S SEASONAL AND TWO-WEEK FORECASTS The 2010 hurricane season had activity at well above-average levels. Our seasonal predictions were quite successful. The United States was very fortunate to have not experienced any landfalling hurricanes this year. By Philip J. Klotzbach1 and William M. Gray2 This forecast as well as past forecasts and verifications are available via the World Wide Web at http://hurricane.atmos.colostate.edu Emily Wilmsen, Colorado State University Media Representative, (970-491-6432) is available to answer various questions about this verification. Department of Atmospheric Science Colorado State University Fort Collins, CO 80523 Email:
[email protected] As of 10 November 2010* *Climatologically, about two percent of Net Tropical Cyclone activity occurs after this date 1 Research Scientist 2 Professor Emeritus of Atmospheric Science 1 ATLANTIC BASIN SEASONAL HURRICANE FORECASTS FOR 2010 Forecast Parameter and 1950-2000 Climatology 9 Dec 2009 Update Update Update Observed (in parentheses) 7 April 2010 2 June 2010 4 Aug 2010 2010 Total Named Storms (NS) (9.6) 11-16 15 18 18 19 Named Storm Days (NSD) (49.1) 51-75 75 90 90 88.25 Hurricanes (H) (5.9) 6-8 8 10 10 12 Hurricane Days (HD) (24.5) 24-39 35 40 40 37.50 Major Hurricanes (MH) (2.3) 3-5 4 5 5 5 Major Hurricane Days (MHD) (5.0) 6-12 10 13 13 11 Accumulated Cyclone Energy (ACE) (96.2) 100-162 150 185 185 163 Net Tropical Cyclone Activity (NTC) (100%) 108-172 160 195 195 195 Note: Any storms forming after November 10 will be discussed with the December forecast for 2011 Atlantic basin seasonal hurricane activity.