![]() More than once, shear cleared away most of the clouds above John and nearly caused it to weaken to a tropical depression. Intensity fluctuated considerably, however, as shear levels varied. Ī strong ridge of high pressure over the northeastern Pacific Ocean forced John westward, where upper level wind shear kept John a tropical storm. Quickly developing banding features and well-defined outflow, it was upgraded to a tropical storm and named John later that day. The system was at this time moving westwards and located around 345 miles (555 km) to the south-southeast of Acapulco, Mexico. Upon entering the Eastern Pacific the wave gradually developed, before the NHC initiated advisories on the system and designated it as Tropical Depression Ten-E on August 11. The wave subsequently moved across the Atlantic Ocean and Caribbean without distinction, before it crossed Central America and moved into the Eastern Pacific Ocean on or around August 8. ![]() The origins of Hurricane John were thought by the United States National Hurricane Center (NHC) to be from a tropical wave that moved off the coast of Africa on July 25, 1994. Its remnants later affected Alaska.Įxtratropical cyclone / Remnant low / Tropical disturbance / Monsoon depression Despite lasting for a full month, John barely affected land at all, bringing only minimal effects to the Hawaiian Islands and the United States military base on Johnston Atoll. Because it existed in both the eastern and western Pacific, John was one of a small number of tropical cyclones to be designated as both a hurricane and a typhoon. Over the course of its existence, John followed a 7,165-mile (13,280-km) path from the eastern Pacific to the western Pacific and back to the central Pacific, lasting 31 days in total. John formed during the 1994 Pacific hurricane season, which had above-average activity due to the El Niño of 1994–1995, and peaked as a Category 5 hurricane on the Saffir–Simpson scale, the highest categorization for hurricanes. Hurricane John, also known as Typhoon John, was both the longest-lasting and the farthest-traveling tropical cyclone ever observed. Part of the 1994 Pacific hurricane and typhoon seasons Hawaiian Islands, Johnston Atoll, Aleutian Islands, Alaska Hurricane John near peak intensity to the south of Hawaii on August 23
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