Five formed from a tropical wave that
emerged from the west coast of Africa on 11 July. The wave moved westward across the tropical
Atlantic, and finally began to show consistent evidence of a cloud system center.
Dvorak intensity estimates
began on 16 July. Deep convection associated with the wave became
concentrated on satellite images on 17 July, and it is estimated that the disturbance
became Tropical Depression Five around 0600 UTC on this day while centered about
475 nautical miles east of Barbados. Dvorak estimates from both
TAFB and SAB
were T1.5 at this time. The post-analysis "best track"
is shown in Table 1 and in
Figure 1 (18K GIF).
The tropical depression moved west-northwestward between 10 and 15 knots. The
first aircraft reconnaissance flight investigated the depression from a flight level near
1500 feet around 2100 UTC on 17 July and found 36 knot peak winds both
north and south of the center. Although satellite intensity estimates never exceeded 30 knots
from the SAB, TAFB or AFGWC,
the fact that 36 knot winds were measured by the
aircraft at a low level to the south of the center suggests that Tropical Depression Five
might have been a minimal tropical storm earlier.
The depression soon lost its organization in satellite imagery, and an aircraft
reconnaissance flight on the afternoon of 18 July had difficulty in finding a center.
Satellite analysts declared the system too weak to classify at 0600 UTC on the 18th,
at which time the depression is considered to have degenerated into a tropical wave.
However, the system continued to show some signs of organization in satellite imagery,
and another reconnaissance flight found a very weak circulation center at 1200 UTC
on 19 July in the northeastern Caribbean Sea. Convection associated with the wave
moved over portions of the Lesser Antilles, Puerto Rico, the Bahamas and the Florida
Straits. The tropical wave finally lost its identity over the eastern Gulf of Mexico on