Arthur strengthens into a hurricane , centered 460 miles off California 's coast . There are no current coastal warnings , as the storm spins north-northwest . It 's the 12th hurricane of the northeastern Pacific season ; the Caribbean has four .
Rachel strengthens into a hurricane , centered 460 miles off Mexico 's coast . There are no current coastal warnings , as the storm spins north-northwest . It 's the 12th hurricane of the northeastern Pacific season ; the Atlantic has 4 .