Tropical Storm Hilary formed over the Eastern North Pacific Ocean south of Mexico on Wednesday morning. At 11:00 a.m. EDT on Wednesday the center of Tropical Storm Hilary was located at latitude 12.4°N and longitude 102.6°W which put it about 470 miles (755 km) south-southeast of Manzanillo, Mexico. Hilary was moving toward the west-northwest at 14 m.p.h. (22 km/h). The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h). The minimum surface pressure was 1002 mb.

A low pressure system over the Eastern North Pacific Ocean south of Mexico strengthened on Wednesday morning and the U.S. National Hurricane Center designated the system as Tropical Storm Hilary. The circulation around Tropical Storm Hilary was organizing quickly. Multiple bands of showers and thunderstorms were revolving around the center of Hilary’s circulation. Storms near the center generated upper level divergence that pumped mass away from the tropical storm. Winds to tropical storm force extended out 200 miles (325 km) in the northeastern quadrant of Tropical Storm Hilary. Winds in the other parts of Hilary’s circulation were blowing at less than tropical storm force.

Tropical Storm Hilary will move through an environment very favorable for intensification during the next 24 hours. Hilary will move over water where the Sea Surface Temperatures are near 30°C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Tropical Storm Hilary will intensify during the next 24 hours. Hilary could intensify rapidly at times. Tropical Storm Hilary is likely to strengthen to a hurricane on Thursday.

Tropical Storm Hilary will move around the western part of a high pressure system over Mexico. The high pressure system will steer Hilary toward the west-northwest during the next 24 hours. On its anticipated track Tropical Storm Hilary will move parallel to the west coast of Mexico. Hilary will move more toward the north when it reaches the western end of the high pressure system during the weekend. Hilary could be near Baja California by Sunday.

Elsewhere, Tropical Storm Greg was spinning southeast of Hawaii and former Hurricane Fernanda weakened to a tropical storm. At 11:00 a.m. EDT on Wednesday the center of Tropical Storm Greg was located at latitude 11.8°N and longitude 151.1°W which put it about 605 miles (975 km) south-southeast of Hilo, Hawaii. Greg was moving toward the west at 14 m.p.h. (22 km/h). The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h). The minimum surface pressure was 1000 mb.

At 11:00 a.m. EDT on Wednesday the center of Tropical Storm Fernanda was located at latitude 17.1°N and longitude 126.8°W which put it about 1165 miles (1875 km) west-southwest of the southern tip of Baja California. Fernanda was moving toward the west at 15 m.p.h. (24 km/h). The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h). The minimum surface pressure was 994 mb.