The Eastern North Pacific Ocean continues to spin out tropical cyclones. Tropical Storm Paine intensified quickly on Sunday as it moved southwest of Baja California. In 24 hours Paine intensified from a tropical depression to near hurricane strength. At 11:00 p.m. EDT on Sunday the center of Tropical Storm Paine was located at latitude 19.5°N and longitude 113.8°W which put it about 345 miles (555 km/h) southwest of the southern tip of Baja California. Paine was moving toward the northwest at 15 m.p.h. (24 km/h). The maximum sustained wind speed was 70 m.p.h. (110 km/h) and there were wind gusts to 85 m.p.h. (135 km/h). The minimum surface pressure was 992 mb.
Tropical Storm Paine moved through a very favorable environment on Sunday. The Sea Surface Temperature (SST) was near 28°C. The upper level winds were light and there was little vertical wind shear. The favorable environmental conditions allowed a tight inner core to develop rapidly at the center of Tropical Storm Paine. Infrared and microwave satellite imagery suggest that an eye could be forming at the center of Paine. A nearly complete ring of strong thunderstorms surrounds the developing eye. A primary rainband exists in the eastern part of the circulation. Thunderstorms at the core of Tropical Storm Paine are generating upper level divergence which is pumping out mass in all directions.
Tropical Storm Paine will be in a favorable environment for another 12 to 18 hours. It is likely to intensify into a hurricane on Monday. After that time Paine will start to move over cooler SSTs and it should start to weaken. The air over the cooler SSTs is also drier and more stable and Paine could weaken quickly on Tuesday.
Tropical Storm Paine is moving around the western end of a ridge over Mexico which is steering it toward the northwest. When Paine reaches the western end of the ridge axis, it will move more toward the north. On its anticipated track Tropical Storm Paine will pass to the west of the southern end of Baja California during the next several days.