A Tropical Storm warning is in effect for the southern coast of Mexico from Manzanillo northward to El Roblito, including the Islas Marias and Puerto Vallarta.
Tropical Storm Pilar has formed near the southern coast of Mexico and it is expected to bring up to 3 to 6 inches of rainfall with the possible isolated maximum of 15 inches over the western portions of the Mexican states of Michoacan, Colima, western Jalisco and Nayarit through Monday.
This rainfall may cause life-threatening flash floods and mudslides.
On the forecast track, Pilar will move over or very near the coast of Jalisco on Sunday. Maximum sustained winds have increased to near 40 mph (65 km/h) with higher gusts.
Some additional strengthening is likely tonight and on Sunday before Pilar nears the coast.