On Monday, October 1, 2018, NOAA's Central Pacific Hurricane Center or CPHC noted that a Hurricane Warning is in effect for Johnston Atoll. The storm is moving west near 16 mph and is expected to continue in that direction through the evening with a decrease in forward speed; maximum sustained winds are near 60 mph, with higher gusts.
Hurricane Walaka becomes a category 5 hurricane. It is expected to hit the Johnston Atoll.