https://phys.org/news/2018-10-nasa-tropical-storm-sergio-verge.html

At 11 a.m. EDT, the National Hurricane Center or NHC noted, "Sergio is almost a hurricane. Satellite images indicate that the central convection has been increasing in intensity during the past several hours, but there are still no indications of an eye in that data. Microwave imagery does show an eye feature, however. The outer bands are not particularly well organized, and there are some dry slots beyond the inner core."

The center of Tropical Storm Sergio was located near latitude 11.5 degrees north and longitude 109.5 degrees west. Sergio is far from land, so there are no coastal advisories in effect. It is about 625 miles (1,000 km) southwest of Manzanillo, Mexico. Sergio is moving toward the west near 14 mph (22 kph), and this general motion is forecast to continue through tonight. A turn toward the west-northwest is expected on Tuesday. Maximum sustained winds remain near 70 mph (110 kph) with higher gusts.