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Typhoon Halong Soaks Japan’s Izu Islands, Then Accelerates Into the North Pacific

Forecasters expect an imminent extratropical transition that could influence Pacific weather patterns, with U.S. effects still uncertain.

Overview

  • Japan issued a special heavy rain warning for the Izu island chain as record six- and 12-hour totals hit Hachijōjima, sending hundreds to evacuation centers.
  • Gusts reached about 234 km/h with violent winds reported on Hachijō; police said three fishermen were swept away in Kanagawa, leaving one dead.
  • By Thursday evening local time, Halong was moving east-northeast away from Honshu, with JTWC guidance calling for extratropical transition by October 10.
  • The Japan Coast Guard urged ships to avoid the storm’s path, flights and ferries to the islands were suspended, and emergency crews prepared for outages and blocked roads.
  • Meteorologists say the remnant low could energize the jet stream, driving Bering Sea gales this weekend and possibly early-week rain in Northern California or Sierra snow, though the NWS says some nearby Pacific Northwest storms are unrelated to Halong.