Possibility of Continued Typhoon Formation: Following Typhoon 11, a New Tropical Depression may Form; September is Typhoon Season
Typhoon 11 formed east of the Philippines yesterday, September 1 (Sunday) at 9 PM. The southern seas have conditions conducive to the formation of tropical disturbances (typhoons and tropical depressions), and as of the weather map at 9 AM on the 2nd (Monday), there is already a tropical depression present. Currently, this tropical depression is not expected to develop significantly; however, there is a chance that a new tropical disturbance may form and potentially impact Japan.
Typhoon 11 Emerges: Limited Impact on the Archipelago
Typhoon 11 is expected to move north while developing and change its course westward on the 4th (Wednesday) towards the Bashi Channel. While no direct impact on the Japanese archipelago is anticipated, Okinawa may experience high waves and other effects, particularly in the Sakishima Islands, so caution is advised.
Potential for New Tropical Disturbance Formation
As of the weather map at 9 AM on the 2nd (Monday), there is a tropical depression present; however, it is not expected to develop substantially at this time. Nonetheless, there is a possibility that a new tropical disturbance (typhoon or tropical depression) may form and move northward toward the Okinawa region. It may exhibit complex movements into early next week, so ongoing attention to developments is necessary. Depending on its movements, warm, moist air around the tropical disturbance may flow into the Honshu area. Please check the latest weather information and typhoon updates.
September is Still Typhoon Season
In the first half of this year, the number of typhoons decreased, but August saw a succession of typhoons. It is likely that typhoon activity will continue into September. Long-range forecasts also predict a higher occurrence of cumulonimbus clouds over the waters south of Japan in the future. Additionally, the westerlies are expected to tend more to the north than usual. If the westerlies flow north, then when a typhoon approaches the Japanese archipelago, the winds that steer the typhoon may weaken, leading to a slower movement, as seen with Typhoon 10.
As the typhoon season is still ongoing, please ensure that you check your emergency supply bags and hazard maps.
Will Not Become a Cross-Border Typhoon
※ The Japan Meteorological Agency and the American Meteorological Agency have designated areas for monitoring typhoons and tropical depressions in the Pacific. The area to the east of the International Date Line (longitude 180 degrees) and the northwestern Pacific is the responsibility of the Japan Meteorological Agency, while the eastern North Pacific and central Pacific are covered by the United States. When a “hurricane” or “tropical storm” that occurred in the U.S. area crosses the International Date Line into Japan’s area, the monitoring responsibility shifts from the American agency to the Japan Meteorological Agency, and it is then referred to as a “typhoon.”
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