Hurricane Rosa is forecast to strengthen rapidly and become a major hurricane today and will likely cause life-threatening surf and rip current conditions of the coast of Mexico and the southern Baja California Peninsula over the weekend.
Hurricane Rosa is currently located about 630 miles west-southwest of Puerto Vallarta, Mexico and about 485 miles southwest of the southern tip of Baja California.
The soon-to-be major hurricane is moving westward at a speed of 12mph.
Maximum sustained winds are near 85mph making Rosa a Category 1 hurricane but the weather system is expected to strengthen today with 111mph winds or higher.
When Hurricane Rosa reaches these wind levels, it will be classified as a Category 3 major hurricane on the Saffir-Simpsons Hurricane Wind Scale and can cause devastating damage if it makes landfall.
Major damage to well-built framed homes and removal of roof decking and gable ends can be expected and trees can be snapped or uprooted.
Electricity and water will also be unavailable for several days to weeks after the storm passes.
However, Rosa is likely to stay far offshore and currently, there are no coastal watches or warnings in effect.
But according to the National Hurricane Centre (NHC) swells generated by Rosa would affect portions of the coast of southwestern Mexico and the southern Baja California Peninsula in Mexico later this week into the weekend.
The NHC urged people in these areas to consult products from their local weather office.
Hurricane-force winds extend outward up to 30 miles from the centre and tropical-storm-force winds extend outward up to 105 miles.
The NHC’s latest report told both atmospheric and oceanic conditions are ‘favourable’ for intensification with the possibility of rapid strengthening within the next 12 to 24 hours.
Beyond three days, Rosa should be over cooler waters and by the time it reaches the northern Baja California peninsula, the cyclone should have weakened to a tropical storm.
This comes just a short time after Hurricane Florence smashed into the US East Coast.
The Carolina states are still feeling the impact of the deadly storm and right now record flooding is forecast on the South Carolina coast as a result of Florence.
The NHC said a broad area of low pressure about 300 miles south of Cape Hatteras, North Carolina, was producing showers and thunderstorms on its north side.
The devastating hurricane made landfall on September 14 as a Category 1 hurricane and killed at least 47 people.
Moody's Analytics estimated that the storm has cost the US around $44 billion (£33.5 billion.)
Behind Hurricane Harvey, Florence is the wettest storm in more than half a century.
The massive storm smashed into the US East Coast with four day’s worth of rainfall and up to three feet of rain.
The National Weather Service categorised the heavy rainfall as a "one in a thousand year rainfall event”.