A very strong typhoon is quickly developing and moving north over the Pacific. Japanese weather officials warn that fierce winds, high waves, and landslides are expected in the Ogasawara Islands until Saturday. The island chain is located about 1,000 kilometers south of Tokyo.

While Typhoon Lan's path has yet to be plotted, it could approach closer to eastern and western Japan around Tuesday. Officials are calling on people to stay updated.

The Japan Meteorological Agency said as of 6 p.m. on Friday, the typhoon was moving slowly north-northwest, 80 kilometers northeast of Chichijima Island.

The typhoon had a central atmospheric pressure of 940 hectopascals and winds of up to 162 kilometers per hour near its center, with a maximum instantaneous wind speed of 234 kilometers per hour. Its storm zone packed winds of over 90 kilometers per hour within a 130-kilometer radius.

The typhoon is developing at an unexpected speed, with the central atmospheric pressure dropping from 980 to 940 hectopascals in 24 hours until Friday morning.

Chichijima and Hahajima islands of Ogasawara are now in the storm zone. Chichijima Island recorded a maximum instantaneous wind speed of 112 kilometers per hour around half past noon on Friday.

Winds strong enough to knock over houses are expected to batter the islands until early Saturday. Gusts are expected to reach 162 kilometers per hour, accelerating up to 234 kilometers per hour, later on Friday. Winds of up to 108 kilometers per hour, gusting up to 162 kilometers per hour, are possible for Saturday.

The sea around the islands is expected to be very rough through Saturday.

Those conditions could be accompanied by heavy rain. Up to 150 millimeters may drench some areas in the 24 hours through Saturday evening.

Residents are advised to stay home and be on the alert for strong winds, high waves, high tides, landslides, flooding, and rising rivers.

Seas around the Izu Islands, north of the Ogasawara Islands, are also expected to be rough on Saturday. Violent winds on Sunday could churn the waves higher.

Winds with maximum speeds of 90 to 104 kilometers per hour and a maximum instantaneous wind speed of 126 to 162 kilometers per hour are forecast there for Sunday.

Dangerous levels of heavy rain may fall on the Izu Islands on Sunday, depending on the direction of the typhoon.

Weather officials are asking residents to pay particular attention to high waves.

Once the typhoon leaves the Izu Islands, it is forecast to move northwest over the Pacific south of Japan's main island of Honshu. It could approach the area sometime from next Tuesday to Wednesday while maintaining its strength.

Stormy weather could lash eastern and western Japan from Monday, possibly disrupting traffic amid the annual Bon holiday period. Even before the typhoon approaches, waves of up to five meters high are forecast on the coasts of the Kanto region on Saturday. Six-meter waves are also forecast from the Kanto through Kinki regions facing the Pacific.