Hurricane Javier - September 18-21, 2004

Javier originated from a tropical wave that crossed the west coast of Africa 29 August. The wave
was devoid of deep convection for several days during its westward trek across the tropical
 Atlantic. It then interacted with an upper-low near the Lesser Antilles, and both systems moved
 westward across the Caribbean Sea.  The upper-low weakened and the wave continued westward,
 and it crossed Central America on 9 September with an increase in convective activity. Once the
 wave entered the eastern Pacific, the cloud pattern became better organized with deep convection
 but limited upper-level outflow. Satellite imagery suggested a tropical depression formed around
 noon on 10 September about 300 n mi south-southeast of Salina Cruz, Mexico.  A central dense
overcast developed over the circulation center, and intensity estimates based on this cloud pattern
 indicate that the cyclone became a tropical storm early in the morning of 11 September.

Under light wind shear, Javier continued to strengthen and reached hurricane status around noon
 12 September. It then moved slowly between the west-northwest and northwest around the
 periphery of a subtropical ridge centered over Mexico. Thereafter, Javier intensified at a rapid
 rate as indicated by the quick development of a distinct eye. The hurricane reached its estimated
 peak intensity of 130 knots and a minimum pressure of 930 mb at 0000 UTC 14 September,
when the cyclone was located about 270 n mi south-southwest of Manzanillo, Mexico. Microwave
 data showed the formation of concentric eyewalls and Javier weakened, but it maintained
 category 3 intensity on the Saffir/Simpson Hurricane Scale for the next three days. Javier moved
 northwestward toward cool waters, and this along with strong southwesterly shear resulted in
weakening.  Javier then turned northward and north-northeastward, and as a weakening tropical
 depression crossed Baja California between Cabo San Lazaro and Punta Abreojos early on the
morning of 19 September. The depression continued toward the north-northeast over the Sea
of Cortes and weakened to a remnant low around noon on 19 September. The low moved
inland near Guaymas, Mexico, and dissipated over the high terrain of the state of Sonora.
 Mid-level moisture from Javier spread northeastward over northern Mexico and the
southwestern United States, producing moderate to heavy rainfall.  Below is
 a track of the cyclone provided by the National Hurricane Center.

Hurricane Javier (2004) track

The storm total rainfall maps below were constructed using data from data provided from NWS River
Forecast Centers, from additional data archived at the National Climatic Data Center in Asheville,
North Carolina, and also from data gathered during the North American Monsoon Experiment.

Javier (2004) rainfall Javier (2004) Filled Contour Rainfall
Javier (2004) Filled Contour Rainfall on White Background

Below are the calendar for Daily Precipitation Maps.  Note that the 24-hour periods end
at 12z that morning.

Sun Mon Tue Wed Thu Fri Sat