Former Tropical Storm Pilar weakened on Sunday. At 10:00 p.m. EST on Sunday the center of former Tropical Storm Pilar was located at latitude 10.7°N and longitude 114.8°W which put it about 900 miles (1450 km) south-southwest of Baja California. Pilar was moving toward the west-northwest at 8 m.p.h. (13 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.
An upper level trough west of Baja California produced strong southwesterly winds that blew across the top of former Tropical Storm Pilar. Those winds caused strong vertical wind shear and they blew the upper and middle portions of Pilar’s circulation northeast of the circulation in the lower levels. Although there was still a well defined circulation in the lower levels of the atmosphere, the circulation of former Tropical Storm Pilar consisted of showers and lower clouds. The wind shear blew the tops off of any clouds that rose higher into the atmosphere.
Former Tropical Storm Pilar will move through an environment that will be unfavorable for intensification during the next several days. Pilar will move over water where the Sea Surface Temperatures are near 29°C. However, the upper level trough west of Baja California will continue to cause strong vertical wind shear. The strong wind shear will prevent inhibit intensification. The lower level circulation of former Tropical Storm Pilar will spin down gradually during the next several days.
Former Tropical Storm Pilar will move around the southern part of a high pressure system over the Eastern North Pacific Ocean. The high pressure system will steer Pilar toward the west-northwest during the next several days. On its anticipated track, former Tropical Storm Pilar will remain far to the southwest of Baja California.