The category one Hurricane Jova was at 0300 GMT packing maximum sustained winds of up to 75 miles per hour (120 kilometers per hour), said the Miami-based National Hurricane Center. Mexican authorities warned of landslides from heavy rain generated by the hurricane of the season, affecting five coastal states along the west coast. The storm was veering steadily towards the central Mexican Pacific coastline, where it could make landfall by Tuesday, meteorologists said. Jova was expected to strengthen in the coming days as it moved eastward. In its 0300 GMT advisory, the NHC said the system was some 405 miles (655 km) west-southwest of the Mexican coastal city of Manzanillo. Tropical storm Irwin, also in the eastern Pacific, meanwhile continued to weaken after losing hurricane status late this week, as it roiled the sea around 885 miles (1425 km) southwest of the southern tip of Baja California. The NHC said Irwin, which posed no threat to land, was expected to weaken further in the coming 24 hours, with current maximum winds around 60 mph (95 kmh). Way out in the mid-Atlantic basin, the hurricane center said post-tropical cyclone Philippe was moving steadily to the northeast, and similarly posed no threat to land. Philippe had on Thursday became the fifth hurricane of the Atlantic season but was too far away to have any impact on coastal areas. It had been the 16th named storm of the 2011 Atlantic season, which has seen four other hurricanes so far, including Irene, a massive system that unleashed deadly floods and storm surges in the eastern United States. The Atlantic hurricane season ends on November 30, according to the NHC.