Tropical Depression One-E formed over the Eastern North Pacific Ocean south of Mexico on Wednesday afternoon. At 5:00 p.m. EDT on Wednesday the center of the area of Tropical Depression One-E was located at latitude 11.9°N and longitude 109.7°W which put the center about 465 miles (745 km) south of Manzanillo, Mexico. Tropical Depression One-E was moving toward the northwest at 9 m.p.h. (15 km/h). The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h). The minimum surface pressure was 1006 mb.
A low pressure system over the Eastern North Pacific Ocean south of Mexico strengthened on Wednesday and the U.S. National Hurricane Center designated the system as Tropical Depression One-E. A distinct low level center of circulation developed in the middle of a larger low pressure system south of Mexico. More thunderstorms formed near the center of circulation. Bands of thunderstorms also developed. Those bands of storms began to revolve around the center of Tropical Depression One-E. Storms near the center of circulation started to generate upper level divergence that pumped mass away from the tropical depression.
Tropical Depression One-E will move through an environment favorable for intensification during the next 24 hours. The tropical depression will move over water where where the Sea Surface Temperatures are near 29°C. It will move under the western part of an upper level ridge that is south of Mexico. The upper level ridge will produce southerly winds that will blow toward the top of the tropical depression. Those winds will cause some vertical wind shear, but the wind shear will not be enough to prevent intensification. Tropical Depression One will intensify to a tropical storm during the next 24 hours.
Tropical Depression One-E will move around the southwestern part of a high pressure system over Mexico. The high pressure system will steer the tropical depression toward the northwest during the next 24 hours. On its anticipated track, Tropical Depression One-E will move parallel to the west coast of Mexico.