Hurricanes Dean and Felix made landfall at Category 5 intensity, causing severe damage in parts of Mexico and Central America, respectively.

[nb 1] Philip J. Klotzbach, William M. Gray, and their associates at Colorado State University issue forecasts of hurricane activity each year, separately from NOAA.

[2] On December 8, 2006, Klotzbach's team issued its first extended-range forecast for the 2007 season, predicting above-average activity (14 named storms, seven hurricanes, three of Category 3 or higher).

[4] On June 19 the UK Met Office (UKMO) issued a forecast of 10 tropical storms in the July to November period with a 70 percent chance that the number would be in the range of 7 to 13.

Sea surface temperature anomalies were cooler, and several Saharan Air Layer events had suppressed development of tropical cyclones.

[13] By May 9 the previously extratropical cyclone had transformed into Subtropical Storm Andrea while located about 140 miles (225 km) southeast of Savannah, Georgia.

Though it produced intermittent bursts of convection, Andrea's chance of regeneration was extinguished when an advancing cold front pushed it northward and eventually absorbed the system.

[15][16] In Florida, the rainfall resulted in slick roads, which caused two traffic-related deaths, and a woman was killed after being injured by rough surf.

[17] Chantal moved over the Avalon Peninsula of Newfoundland where flooding was observed,[17] where about 4 inches (100 mm) of rain caused the postponement of the annual Royal St. John's Regatta.

It weakened to a tropical depression as it made landfall near Lamar, Texas, on August 16,[33] and the NHC issued its last advisory on the system shortly thereafter as it moved inland.

Tracking generally westward, it rapidly intensified to Category 5, and after fluctuating in strength, made landfall on Nicaragua with 160 mph (260 km/h) winds.

[38] Felix made landfall just south of the border between Nicaragua and Honduras, in a region historically known as the Mosquito Coast, as a Category 5 hurricane with 160 mph (260 km/h) winds on September 4.

[40] On September 8, the center of circulation became sufficiently organized to be declared Subtropical Storm Gabrielle, about 360 nautical miles (670 km) southeast of Cape Hatteras.

[42] In advance of the storm, tropical cyclone watches and warnings were issued for coastal areas,[40] while rescue teams and the U.S. Coast Guard were put on standby.

[44] The wind shear slowly weakened, and early on September 12 Tropical Depression Eight developed about 1125 miles (1815 km) east of the Lesser Antilles.

The system moved west-northwestward due to a ridge to its north, and with continued wind shear, it remained a tropical depression for 24 hours before convection increased further.

[44] On September 12, an area of thunderstorm activity in the Gulf of Mexico organized into Tropical Depression Nine, about 60 mi (97 km) southeast of Matagorda, Texas.

[49] A subtropical depression formed on September 21 in the northeastern Gulf of Mexico from the interaction of a tropical wave, the tail end of a cold front, and an upper-level low.

Initially containing a poorly defined circulation and intermittent thunderstorm activity, the system transitioned into a tropical depression after convection increased over the center.

Tracking northwestward, the depression moved ashore near Fort Walton Beach early on September 22, and shortly thereafter it dissipated over southeastern Alabama.

[57] Early on September 23, both satellite estimates and QuikScat data determined that the depression had strengthened into Subtropical Storm Jerry, despite the lack of a well-defined inner core.

[64] However, strengthening was short-lived because a sharp upper-level trough to the west of Karen increased the amount of vertical wind shear over the hurricane.

[69] Under weak steering currents, the depression drifted south and southwest, executing a small cyclonic loop into the Bay of Campeche.

Upper-level winds gave way to an anticyclone above the depression, and the system became Tropical Storm Lorenzo on September 27 about 130 nautical miles (240 km) east of Tuxpan.

Lorenzo reached its peak intensity on September 28, then weakened slightly before making landfall near Tecolutla, Mexico as a minimal hurricane.

Following a convective increase and better-defined outflow, it developed into Tropical Depression Fourteen about 115 miles (185 km) west-southwest of the southernmost Cape Verde Islands early on September 28.

[71] Westerly wind shear prevented significant development,[73] but following an increase in convection, the depression intensified into Tropical Storm Melissa early on September 29.

[71] An area of disturbed weather extended from the northwestern Caribbean to the western Atlantic Ocean on October 4,[79] possibly related to the remnants of Hurricane Karen.

It slowly acquired tropical characteristics, and late on December 10, the National Hurricane Center declared it Subtropical Storm Olga while just north of Puerto Rico.

According to the National Hurricane Center's Tropical Cyclone Report on Olga, at least 22 occurred due to the release of floodgates at a dam in Santiago Province.