Tropical Storm Dolly 2002

Preliminary Report
Tropical Storm Dolly
29 August - 04 September 2002


Tropical Storm Arthur (TS)
Tropical Storm Bertha (TS)
Tropical Storm Cristobal (TS)
Tropical Storm Dolly (TS)
Tropical Storm Edouard (TS)
Tropical Storm Fay (TS)
Hurricane Gustav (1)
Tropical Storm Hanna (TS)
Hurricane Isidore (3)
Tropical Storm Josephine (TS)
Hurricane Kyle (1)
Hurricane Lili (4)

Dolly was the first Atlantic basin tropical cyclone to develop in the deep tropics in 2002.


a. Synoptic History

Dolly developed from a tropical wave that moved off the west coast of Africa on 27 August. As the wave moved westward, ship observations indicated that the wave was accompanied by an area of low pressure and satellite images showed increasing thunderstorm activity. The system moved west and west-southwest and became a tropical depression at 1200 UTC 29 August about 550 nautical miles southwest of the westernmost Cape Verde Islands. The depression quickly became better organized, developing well-defined cyclonically curved convective bands and good outflow in all quadrants. It became a tropical storm by 1800 UTC on the same day and reached its peak intensity of 58 mph and a minimum pressure of 997 mb at 1200 UTC 30 August. Dolly moved toward the west and west-northwest around the periphery of a subtropical ridge for a couple of days. Thereafter, tropical cyclone curved to the northwest and then north ahead of a mid-level trough with a minor fluctuation in intensity at 0000 UTC 3 September when convection decreased. It finally became a remnant low late on 4 September when strong shear removed most of the convection, and ultimately became absorbed by the trough.

b. Meteorological Statistics

Operationally, the maximum winds in Dolly were 63 mph at 1200 UTC 30 August based on a 3.5 Dvorak classification. However, a post-analysis of visible images showed that the low level-center was not embedded completely within the deep convection. This suggested that Dolly was a weaker tropical cyclone and the maximum winds have been adjusted to 58 mph in the best track.

c. Casualty and Damage Statistics

There were no reports of damage or casualties associated with Dolly.

Maximum Intensity For
Tropical Storm Dolly
29 August - 04 September, 2002

Position Pressure
Wind Speed
Lat. (°N) Lon. (°W)
30/1200 10.3 36.3 997 60 Tropical Storm