The 2004 Pacific hurricane season officially started on May 15, 2004 in the eastern Pacific and June 1, 2004 in the central Pacific, and lasted until November 30, 2004. These dates conventionally limit the portion of the year in which most of the year is in the northeastern Pacific tropical cyclones forming.
This season was the first since the 1990 season that resulted in no deaths.
On May 22nd, a tropical wave combined with a stationary low pressure trough developed into tropical low pressure area Eins-E . At that time, the depression was 925 km south-southeast of Cabo San Lucas , Mexico . The low pressure area moved northwest into an area of only light wind shear. Because of these good conditions, the low pressure area quickly intensified to form tropical storm Agatha , on the same day it was formed. On May 23, Agatha reached a top speed of 95 km / h and thus also her climax. On May 24th, dry air and cooler waters caused Agatha to weaken rapidly, so that the storm degenerated to a residual low on the same day. The remains of Agatha completely dissolved on May 26th.
On June 17th, a tropical wave broke away from the west coast of Africa and reached the eastern Pacific on June 25th. When the system began to circulate on July 2, the National Hurricane Center updated it to Tropical Depression Two-E that same day . At that point it was 1,205 km southwest of Baja California Sur . Because of the cooler waters, the low pressure area could no longer intensify and degenerated to a residual low early on July 4th. The remains dissolved on July 5th.
In early July, there was a cluster of thunderstorms far south of Hawaii . By July 5th, the system was organized enough to be classified as Tropical Depression One-C . This happened 1,100 km south-southeast of Johnston Atoll . During the day, the depression moved west and remained relatively disorganized. This remained so the next day, so that the low pressure area dissolved again. One-C was formed as south as only Storms Ekeka and Hali from 1992 .
On July 1, a tropical wave broke off the west coast of Africa . After traveling west for a week across the Atlantic , the Caribbean and Central America , she reached the Pacific . There it began to organize and convection built up, it was classified as Tropical Depression Three-E on July 11th . At that time it was 540 km southwest of Zihuatanejo . Six hours after formation, the low pressure area intensified into a tropical storm and was named Blas . Although the conditions were very favorable, Blas could not intensify into a hurricane. During the course of July 12th, the storm moved northwest around a high pressure area and reached its peak on July 13th with wind speeds of 100 km / h. Because of cooler waters, Blas weakened first to a tropical low pressure area on July 14, and then to a residual low on July 15. The residual low dissolved west of Baja California on July 19 .
A tropical wave broke off the coast of Africa and reached the eastern Pacific. An area of favorable conditions occurred, so that on July 19 the tropical low pressure area Vier-E formed. The low pressure area quickly reached storm status, whereupon the storm was named Celia . Celia continued to intensify rapidly, reaching hurricane status on July 22nd. The hurricane peaked at 140 km / h before striking an area of cooler water and drier air and weakening. The storm weakened to a tropical depression on July 24, and resolved a day later.
On August 18, the remains of Tropical Storm Earl moved to the Pacific. Over the next few days, the system slowly began to build up convection and was classified as a Tropical Depression Eight-E on August 23, 665 km south of Cabo San Lucas , Baja California . The depression began to intensify rapidly, becoming a tropical storm named Frank just 12 hours after it formed . Frank continued its rapid intensification as it pulled northwest, peaking on August 24th with winds of 140 km / h and a minimum air pressure of 979 hPa as a Category 1 hurricane. Shortly after its peak, the hurricane moved over cooler waters and quickly weakened into a tropical storm. On August 26th, Frank degenerated to a residual low. The remnants moved southwest and disbanded on August 27, 1205 km west of Baja California.
The tropical depression Thirteen-E arose on September 10, south-southeast of the isthmus of Tehuantepec . During the day it slowly moved northwest and on the morning of September 11th intensified into a tropical storm that was named Javier . On the afternoon of September 12th, Javier started a rapid intensification and became a hurricane. Javier reached its peak on the morning of September 14th with sustained wind speeds of 240 km / h and a minimum air pressure of 930 hPa . The following day the first storm warnings for Baja California were issued. Over the course of the next few days, Javier weakened just as quickly as he had strengthened and on September 19, he went ashore south of San Ignacio only as a tropical depression. On the same day, the low pressure area degenerated to a residual low and moved inland. Javier caused moderate damage in northwest Mexico. The remaining low brought heavy rains in the United States .
↑ David P. Roberts and Miles B. Lawrence: Hurricane Frank Tropical Cyclone Report ( English ) National Hurricane Center. November 12, 2004. Retrieved October 16, 2013.
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