“This rainfall could lead to flash flooding and landslides in areas of rugged terrain, the Miami-based National Hurricane Center said.
As of 2 p.m. ET Sunday, Roslyn was centered about 90 kilometers (55 miles) south-southeast of Durango, Mexico, the hurricane center said. It was moving north-northeast at 31 kilometers per hour (20 mph).
“Swells generated by Roslyn will affect portions of the coast of southwestern Mexico, west-central Mexico, and the southern portion of the Baja California peninsula through tonight,” the hurricane center said.
“These swells are likely to cause life-threatening surf and rip current conditions.”
Roslyn made landfall around 7:20 a.m. ET near Santa Cruz in northern Nayarit state, whipping maximum sustained winds of 120 mph, the hurricane center said.
A “major hurricane” is one with maximum sustained winds of at least 111 mph.
“Maximum sustained winds have decreased to near 70 mph (110 km/h) with higher gusts,” the hurricane center said Sunday afternoon.
“Rapid weakening is expected to continue, and Roslyn is forecast to become a tropical depression by this evening and dissipate tonight or early Monday.”
Roslyn formed off the western coast of Mexico and its sustained wind speed increased by 60 mph in a 24-hour period from Friday to Saturday morning – a rapid intensification.
The hurricane has been tracking similarly to Hurricane Orlene, which made landfall October 3 just north of the Nayarit-Sinaloa border.
CNN’s Haley Brink and Derek Van Dam contributed to this report.