Skip Navigation Links   
NOAA logo - Click to go to the NOAA homepage National Weather Service   NWS logo - Click to go to the NWS homepage
National Hurricane Center
Local forecast by
"City, St" or "ZIP"

Alternate Formats
   Text     |   Mobile
   Email   |   RSS XML/RSS logo
   About Alternates
Cyclone Forecasts
   Latest Advisory
   Past Advisories
   About Advisories
Marine Forecasts
   Atlantic & E Pacific
   Gridded Marine
   About Marine
Tools & Data
   Satellite | Radar
   Analysis Tools
   Aircraft Recon
   GIS Datasets
   Data Archive
   Forecast Accuracy
Outreach & Education
   Storm Surge
   About Cyclones
   Cyclone Names
   Wind Scale
   Most Extreme
   Forecast Models
   Glossary | Acronyms
   Frequent Questions
Our Organization
   About NHC
   Mission & Vision
   Staff | Q&A
   Visitors | Virtual Tour
   Library Branch
   NCEP | Newsletter
Contact Us
Follow the National Hurricane Cent
er on Facebook Follow the National Hurricane Center on Twitter is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

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 (AFWA).

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 casualties.

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.
Wind Speed
 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

Figure 1: 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

Figure 2: Selected wind observations and best track maximum sustained surface wind speed curve for Tropical Storm Dolores, 6-8 July 2003.

Selected pressure observations and best track minimum central pressure curve for Tropical Storm Dolores

Figure 3: Selected pressure observations and best track minimum central pressure curve for Tropical Storm Dolores, 6-8 July 2003.

Quick Navigation Links:
Tropical Cyclone Forecasts  -  Tropical Marine Forecasts  -  Data Archive
Outreach  -  Prepare  -  About Cyclones  -  About NHC  -  Contact Us

NOAA/ National Weather Service
National Centers for Environmental Prediction
National Hurricane Center
11691 SW 17th Street
Miami, Florida 33165-2149 USA
Information Quality
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities
Page last modified: Monday, 07-Feb-2005 16:38:05 UTC