Tropical Cyclone Report
Tropical Storm Dolores
6 - 8 July 2003
Richard J. Pasch
National Hurricane Center
18 December 2003
Dolores was a short-lived, minimal tropical storm
that remained over water.
a. Synoptic History
Radiosonde data from the Windward Islands indicate
that a tropical wave entered the eastern Caribbean Sea on 27 June.
It is difficult, however, to trace this wave back to Africa. The
system moved westward and entered the eastern north Pacific Ocean
on 30 June. An area of disturbed weather associated with the wave
received its first Dvorak classification on 3 July at 1800 UTC,
while it was centered about 625 n mi south of Manzanillo, Mexico.
Deep convection associated with the disturbance sputtered for a
couple of days, but became more persistent on 5 July, although a
low-level circulation center was not well defined. Around 0600 UTC
6 July, the convection became organized enough to designate the
system as a tropical depression that was centered about 655 n mi
south-southwest of the southern tip of Baja California. The
tropical cyclone strengthened slightly, and became Tropical Storm
Dolores by 1200 UTC 6 July. At that time, maximum winds were
estimated to be 35 kt, which turned out to be the peak intensity of
the cyclone. East-northeasterly shearing soon had an adverse affect
on Dolores and, later on 6 July, the low-cloud center became
exposed to the northeast of the main area of convection.
A mid-level ridge north and northeast of the system
caused a west-northwestward to northwestward motion throughout the
tropical cyclone's short history. This motion soon took the
tropical cyclone over lower (below 25°C) sea surface
temperatures. Aside from a few brief flare-ups, deep convection
associated with Dolores generally diminished after the system
reached tropical storm strength. Dolores weakened back to a
tropical depression around 0000 UTC 8 July, and diminished to a
remnant low located about 800 n mi west-southwest of the southern
tip of Baja California around 0600 UTC that day. The low dissipated
by 0000 UTC 9 July.
The "best track" chart of the tropical cyclone's path
is given in Figure 1, with the wind and pressure histories shown in
Figure 2 and Figure 3,
respectively. The best track positions and
intensities are listed in Table 1.
b. Meteorological Statistics
Observations in Dolores (Figure 2 and Figure 3) are
satellite-based Dvorak technique intensity estimates from the
Tropical Analysis and Forecast Branch (TAFB), the Satellite
Analysis Branch (SAB) and the U. S. Air Force Weather Agency
No ship reports of winds of tropical storm force
associated with Dolores were received.
c. Casualty and Damage Statistics
Dolores is not known to have caused any damage or
d. Forecast and Warning Critique
Dolores was a tropical cyclone for only a couple of
days, so there were not enough cases for meaningful verification
statistics. Since it was evident that the system was not in a very
favorable environment for strengthening, the official intensity
forecasts never called for significant strengthening. Watches or
warnings were neither required nor issued for Dolores.
Table 1: Best track for Tropical
Storm Dolores, 6-8 July 2003.
| 06 / 0600|| 13.8|| 116.0|| 1007|| 30|| tropical depression
| 06 / 1200|| 14.6|| 117.0|| 1005|| 35|| tropical storm
| 06 / 1800|| 15.5|| 117.9|| 1006|| 35|| "
| 07 / 0000|| 16.0|| 118.6|| 1006|| 30|| tropical depression
| 07 / 0600|| 16.5|| 119.4|| 1006|| 30|| "
| 07 / 1200|| 17.0|| 120.2|| 1007|| 25|| "
| 07 / 1800|| 17.3|| 121.1|| 1007|| 25|| "
| 08 / 0000|| 17.6|| 122.0|| 1007|| 25|| "
| 08 / 0600|| 17.9|| 122.8|| 1008|| 20|| remnant low
| 08 / 1200|| 18.2|| 124.0|| 1009|| 20|| "
| 08 / 1800|| 18.6|| 125.5|| 1010|| 20|| "
| 09 / 0000|| || || || || dissipated
| 06 / 1200|| 14.6|| 117.0|| 1005|| 35|| minimum pressure
Best track positions for Tropical Storm
Dolores, 6-8 July 2003.
Selected wind observations and best track maximum
sustained surface wind speed curve for Tropical Storm Dolores, 6-8
Selected pressure observations and best
track minimum central pressure curve for Tropical Storm Dolores,
6-8 July 2003.