2004 United States Hurricane Landfalls

2004 United States Hurricane Landfalls

Genesis Parameter (GP) Definition

Genesis Parameter Values (in Standard Deviations)

Atlantic Basin Genesis Parameter Ratios

Upper-Level Wind Parameter (UP) Definition

Upper-Level Wind Parameter Values (in Standard Deviations)

Westward Track Parameter (WP) Definition

United States Tropical Cyclone Landfall Parameter (LP) Definition

United States Landfall Parameter (LP) Values (in Standard Deviations)

United States Landfall Parameter Ratios

Conclusions

• The 2004 hurricane season was very active both in terms of overall tropical cyclone activity and in terms of United States landfalls

• A strong Intertropical Convergence Zone, weaker trade winds, and warm Atlantic sea surface temperatures contributed to the very active season

• A mid-level ridge predominated over the East Coast of the United States with mid-level troughs to the west and east which helped push storms westward into the longitudes of the United States