The latest storm news from the Japan Meteorological Agency (JMA) on the morning of June 1st said that Typhoon Jangmi is forecast to cause heavy rain in the Pacific coastal areas of western and eastern Japan this week. Some airlines have begun to cancel flights to respond to the developments of the storm.
According to JMA, from Kyushu Island in southwest Japan to Kanto region, where Tokyo is the capital, there may be heavy rain at warning levels from now until June 3. The agency also recommends that people be wary of strong winds, sea level rise due to storms, landslides and rising river water causing flooding.
It is forecasted that Typhoon Jangmi will approach Okinawa Island and the Amami Islands on June 1st and 2nd, before changing direction to the east, reaching western and eastern Japan on June 3rd. At that time, Typhoon Jangmi's intensity is forecast to weaken slightly.
Due to a weather band that is almost standing still north of the storm, some areas may experience rain even before the storm makes landfall or approaches.
Japanese weather forecasters note that the rainfall may be prolonged, causing the total accumulated rainfall to increase very high. Some places are forecast to record rainfall from 200 to 300mm.
Two major Japanese airlines, Japan Airlines and All Nippon Airways, have announced the cancellation of a series of flights to and from Okinawa.
In 24 hours until noon on June 1st, rainfall in Okinawa is forecast to reach about 100mm, while the Amami and southern Kyushu areas may record rainfall of about 80mm. By noon on June 2nd, accumulated rainfall in these areas may reach 300mm.
Forecast, by noon on June 3, the Shikoku and Kansai areas in western Japan are forecast to have rainfall of about 300mm, while the Tokai areas in central Japan and Kanto may record about 200mm.
Japanese media compared the strength of Typhoon Jangmi to Typhoon Mawar, the storm that killed 6 people and left 3 missing in June 2023.
The latest typhoon bulletin on the morning of June 1st from the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said that Typhoon Jangmi (Philippines name Domeng) is slowing down in speed but still maintaining its strength.
The storm's eye is located about 655km east-northeast of Itbayat Island, Batanes province, Philippines. The maximum sustained wind near the storm's eye is 130 km/h, with maximum gusts of 160 km/h. The storm is moving north-northwest at a speed of about 15 km/h.
Philippine typhoon forecasters noted that strong winds from tropical storm level to typhoon level due to the impact of Jangmi are expanding within a radius of about 500km from the storm center.
PAGASA noted that heavy rain and strong winds may still occur in areas outside the official typhoon forecast area. From the morning of June 1, Typhoon Jangmi will turn north before changing to northeast and moving south of Japan. The typhoon is likely to leave the Philippine forecast area in the morning or afternoon of the same day.
In the morning typhoon bulletin on June 1, PAGASA assessed that Jangmi is likely to have reached maximum intensity. The typhoon is forecast to maintain intensity when passing through the Okinawa area, Japan, and then enter a phase of gradual weakening.
