Tropical Storm Edouard 2002

Preliminary Report
Tropical Storm Edouard
01 - 06 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)

Edouard made landfall on the northeast coast of Florida as a minimal tropical storm.


a. Synoptic History

Edouard formed from a disturbance of non-tropical origin. Cloudiness and isolated showers developed several hundred miles east-southeast of Bermuda on 25 August, likely in association with a low-level disturbance that had formed along a dying frontal zone. The system moved southwestward for several days, and when the disturbance was located near the southwest end of an upper-level trough a few hundred miles north of Puerto Rico, deep convection associated with the system increased. The area of disturbed weather moved slowly westward over the next couple of days, and on the 31st, when the system was located just to the east of the northern Bahamas, it began to become better organized. On 1 September deep convection became persistent, and surface and reconnaissance aircraft data indicate the system became a tropical depression around 1800 UTC that day, centered about 120 n mi east of Daytona Beach, Florida.

In the early stage of the tropical cyclone, the environment was characterized by modest west-northwesterly shear, and the system strengthened into Tropical Storm Edouard by 0600 UTC 2 September. Later that day and early on the 3rd, the environment appeared to become more hostile. Water vapor imagery suggested that dry mid- to upper-tropospheric air was overspreading the center, and radiosonde data indicated 35 to 46 mph winds affecting the storm at the 200 mb level. Despite this, Edouard was able to intensify further, and it reached its peak strength of 63 mph around 1200 UTC 3 September. However, very soon thereafter, the storm soon began to succumb to the influence of strong shear and dry air aloft and a weakening trend was underway. By midday on the 3rd, the associated deep convection had decreased, and the low-cloud circulation center was clearly exposed.

Soon after Edouard's genesis, steering currents weakened. From 2-3 September, the cyclone moved in a clockwise loop. Then, as a weak and narrow mid-tropospheric ridge developed to its north, Edouard headed erratically westward and west-southwestward toward the northeast coast of Florida. Strong shear continued to impact the system, and although occasional bursts of deep convection occurred near the center, the cyclone was barely of tropical storm strength when the center crossed the coastline in the vicinity of Ormond Beach, Florida around 0045 UTC 5 September. Edouard weakened to a depression almost immediately after landfall, and crossed north-central Florida. The weak depression emerged into the Gulf of Mexico near Crystal River, Florida around 1400 UTC on the 5th. Strong northwesterly shear, associated with the upper-tropospheric outflow from developing Tropical Storm Fay located over the western Gulf, precluded any redevelopment of Edouard. On the 6th, Tropical Depression Edouard moved westward over the northeastern Gulf, and by 1200 UTC on that day, it was a rather insignificant-looking low cloud swirl with minimal deep convection. The system dissipated shortly thereafter, as it became absorbed into the larger circulation of Tropical Storm Fay.

b. Meteorological Statistics

The peak intensity of Edouard, 63 mph, is based on a reconnaissance aircraft wind measurement of 82 mph at a flight level of about 1000 ft at 1159 UTC 3 September.

There were no reports of sustained tropical storm force winds over land associated with Edouard. On 4 September, Patrick Air Force Base reported a peak wind gust of 39 mph at 2127 UTC , and the St. Augustine C-MAN station reported a peak gust of 38 mph at 1900 UTC.

1. Rainfall Data

Reliable rainfall estimates from the Melbourne radar indicated maxima of 4 to 5 inches near the Seminole/Orange County line, just northeast of Union Park (Orange County) Florida.

c. Casualty and Damage Statistics

There were no reports of casualties due to Edouard. Some flooding occurred in Brevard, Seminole, and Orange counties in Florida. This appears to have been mainly roadway flooding and damages, if any, appeared to be minor. No dollar amounts are available.

Maximum Intensity For Tropical Storm Edouard
01 - 06 September, 2002

Position Pressure
Wind Speed
Lat. (°N) Lon. (°W)
03/1200 30.4 78.4 1002 65 Tropical Storm

Landfall for Tropical Storm Edouard
01 - 06 September, 2002
Wind Speed
Stage Landfall
05/0200 1008 40 Tropical Storm Ormond Beach,