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JUNE 2005

ANNUAL

storm at 0600 UTC 9 December and reached its maxi- mum winds of 60 kt and a minimum pressure of 990 mb around 1800 UTC 9 December while located about 700 n mi west-northwest of the Cape Verde Islands. By then, Peter was moving northward ahead of an ap- proaching cold front. This was the same frontal system that had absorbed Tropical Storm Odette a few days earlier. Thereafter, the effects of strong upper-level winds and lower sea surface temperatures caused weak- ening, and by 1200 UTC 10 December, Peter was a tight swirl of low clouds with estimated winds of 30 kt. Peter continued to move toward the north and north-north- east over cooler waters and became an extratropical low by 0600 UTC 11 December. A few hours later, the system was absorbed by a cold front.

Visible satellite imagery and microwave data sug- gested the development of an eye feature that was best defined around 1515 UTC 9 December. In general, the presence of an eye feature on satellite imagery would correspond to a tropical cyclone of hurricane intensity, and the 3-h average objective Dvorak t-number was 4.0 or 65 kt during that period. However, this eye feature was transient and by 1800 UTC it had begun to dissi- pate. It is estimated that Peters highest wind speed was 60 kt.

3. Tropical depressions

Tropical Depression 2 formed from a tropical wave that crossed the west coast of Africa into the Atlantic Ocean on 6 June. Dvorak satellite classifications and visible satellite imagery indicate that the system devel- oped a closed circulation and became a tropical depres- sion around 0000 UTC 11 June. The depression moved westward at a forward speed of about 17 kt, and the systems deep convection almost immediately became displaced to the northeast of the surface center. The depression degenerated into an open wave about 825 n mi east-southeast of Barbados after 1800 UTC that day. Tropical Depression 6 formed from a tropical wave that moved across the coast of Africa on 14 July. Mov- ing westward at 20 kt, the system developed enough organized convection to be classified as a tropical de- pression by 19 July, at a location about 900 n mi east of the Lesser Antilles. The depression moved westward for two days and was approaching the Lesser Antilles on 21 July when data from a U.S. Air Force Reserve reconnaissance aircraft showed that the system did not have a closed low-level circulation. The open tropical wave continued westward across the Caribbean for a few more days. Forecasts issued on 19 and 20 July brought the depression to hurricane intensity in three days, and watches and warnings were issued for several

SUMMARY

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islands in the eastern Caribbean Sea. However, the de- pression weakened to an open wave, bringing only a few showers across the islands.

The tropical wave that produced Tropical Depres- sion 6 over the tropical Atlantic Ocean continued west- ward, while an area of deep convection split off toward the northwest, moved across Hispaniola on 23 July, and approached the southeast coast of Florida on 24 July. Radiosonde data and satellite images suggest that a mid- to lower-tropospheric circulation associated with the convection then moved northward near the east coast of Florida. Satellite images and surface observa- tions indicate that Tropical Depression 7 formed about 50 n mi east of Daytona Beach, Florida, by 1200 UTC 25 July. As it moved north-northwestward over the cooler shelf waters near the northeast Florida and Georgia coasts, its maximum winds did not strengthen beyond 30 kt. The cyclone made landfall along the cen- tral Georgia coast about 35 n mi south of Savannah around 0600 UTC 26 July, and dissipated over Georgia about a day later. Rainfall totals ranging up to 75 mm were reported over portions of Georgia and South Carolina.

Short-lived Tropical Depression 9 developed from a strong tropical wave that moved across the west coast of Africa on 14 August and moved westward across the tropical Atlantic Ocean for several days. The shower activity gradually increased as the wave approached the Lesser Antilles. The cloud pattern became better orga- nized over the eastern Caribbean Sea and, based on a west wind reported by a ship, it is estimated that a tropical depression formed at 1800 UTC 21 August. Initially, the upper-level environment appeared to be favorable for strengthening. However, strong upper- level southwesterly winds became established over the depression and weakening began. Data from an Air Force reconnaissance plane at 1800 UTC 22 August indicated that the depression had lost its closed circu- lation just south of Hispaniola.

Tropical Depression 14 developed from a tropical wave that crossed the west coast of Africa on 6 Sep- tember. The wave was associated with a broad surface circulation almost immediately, and by 8 September, the system possessed enough organized convection to be considered a tropical depression about 250 n mi southeast of the southernmost Cape Verde Islands. The cyclone moved slowly to the west-southwest initially, but an upper-level low dropped southward to the west of the depression and caused it to accelerate to the north-northwest on 9 September. Under southerly shear, the convection became separated from the cir- culation center and the circulation began to elongate.

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