Photo/Illutration The projected path of possible Typhoon No. 15 as of noon on Sept. 22 (Captured from the official website of the Japan Meteorological Agency)

Fresh on the heels of powerful Typhoon No. 14, another possible typhoon is forming that could again ruin the three-day holiday weekend across parts of the Japanese archipelago.

The Japan Meteorological Agency is reporting a tropical low-pressure system over the seas south of Japan that is developing and heading northward on Sept. 22.

According to the JMA, it is expected to become a typhoon soon.

At present, it is not expected to become as massive as Typhoon No. 14, which swirled through the Japanese archipelago from south to north the three-day holiday weekend before. The powerful storm caused destruction and flooding, and left at least three people dead and 133 injured in 21 prefectures in its wake.

The latest tropical low-pressure system is, however, expected to bring torrential rain during the three-day holiday weekend starting Sept. 23.

According to the JMA, on Sept. 24, the low-pressure system is expected to approach the main Honshu island and move in an east-northeast direction along the Pacific coast of eastern Japan.

The agency said that the damp air coming from the tropical low-pressure system will make atmospheric conditions from parts of western to northern Japan unstable.

Over the 24 hours until noon on Sept. 23, as much as 150 mm of rain is expected to fall in the Kinki and Tokai regions, and 120 mm in the Kanto-Koshin region, the JMA said

The JMA is urging caution against landslides, lightning strikes and gale-force winds.

As of 9 a.m. on Sept. 22, the tropical low-pressure system was moving in a northwest direction at a speed of around 25 kph.

It had an atmospheric pressure of 1,006 hectopascals at its center at the time with 54 kph maximum wind velocity and 82.8 kph maximum instantaneous wind gusts.

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