Pacific storm Nolo switched from hurricane to typhoon after crossing the international date line, a basin naming change that left the system strong but still far from land.
Nolo crossed the agreed line in the Pacific that separates one calendar day from the next and immediately took on a new label on the western side of the ocean.
The system had been tracked as a hurricane east of the line. Once it moved west, weather agencies treated it as a typhoon under the naming rules that govern that basin.
The change is bureaucratic, not meteorological. The storm did not gain or lose power because of the name. The label simply follows long-standing regional conventions for the same kind of spinning tropical system.
Sunday morning Hawaii time, Nolo still carried Category 3 hurricane status, with maximum sustained winds of 115 mph.
By Monday morning Japan time, the Associated Press reported, the Japan Meteorological Agency listed Typhoon Nolo at 100 mph sustained winds and a westward motion of 19 mph.
Forecasters expected the system to keep heading west and gradually weaken over open water.
John Cangialosi, a senior hurricane specialist with the U.S. National Hurricane Center in Miami, put the practical risk in plain terms.
"The good news is there’s a large, vast ocean, so even though it is still going to be strong, it’s not near any land,"
That distance matters more than the title on the advisory map.
Tropical cyclones with winds over 74 mph are called hurricanes in the northern Atlantic and in the central and eastern Pacific.
West of the international date line in the North Pacific, the same threshold storm is called a typhoon.
In the South Pacific and the Indian Ocean, the generic term tropical cyclone is the common label.
The wind, rain, and surge physics do not change at the line. The vocabulary does. Mariners, emergency managers, and the public hear the local term used by the agency responsible for that stretch of ocean.
A week before the date-line crossing, Nolo skirted Hawaii as a hurricane and brought heavy rain while staying offshore.
After that pass, the system lost some punch and dropped to tropical storm strength.
By Friday it had regained hurricane force, setting up the Category 3 reading on the eastern side of the line before the Monday typhoon designation farther west.
Satellite imagery on Sunday showed Nolo in the Pacific alongside a second system, Hurricane Rachel, off Mexico. The imagery came from the National Oceanic and Atmospheric Administration.
While Nolo stayed far from land, Hurricane Rachel continued on a westward path away from Mexico.
The National Hurricane Center still warned that Rachel was sending dangerous waves and swells back toward the coast of west-central Mexico and the Baja California Peninsula.
Coastal hazards can linger even when the storm center itself is moving out to sea. That is the nearer-term concern for shoreline communities, separate from Nolo’s open-ocean track.
No detailed injury, damage, or warning-list tally for either system appeared in the available readout beyond those swell warnings and the earlier heavy rain near Hawaii.
Nolo’s story is mostly a map-and-language lesson with a reassuring punch line: a strong storm over a wide empty ocean, renamed by geography, still nowhere near a coastline that needs to board up.
