Updated Oct. 20, 2019 5:03 AM
Areas of Japan hit hard by rounds of heavy rain over the past week should expect more tropical downpours with yet another tropical system in the coming days.
Neoguri strengthened into a typhoon late in the day on Friday over the open waters of the Philippine Sea. The storm is known as Perla in the Philippines.
Typhoon Neoguri is not bringing any major impacts to land at this time as it is located several hundred miles away from Manila in the Philippines and southern Japan.
The storm has already started to turn to the northeast and will continue in this direction on Sunday as it begins to move into a harsher environment.
Increased wind shear will help to weaken the storm as it brings heavy rain to the Ryukyu Islands to end the weekend.
The center of Neoguri looks to pass just east of the Ryukyu Islands on Sunday and into the beginning of the week but will be close enough to the islands to bring occasional tropical-storm-force winds.
By Monday, heavier rain will begin to spread across Kyushu, Shikoku and southern Kansai as the storm approaches southern Japan, likely as a tropical storm. The heaviest rain is expected to fall on coastal areas.
Downpours will continue to spread to the east through the middle of the week as the storm continues to track near the coast of southern Japan. Chubu, Kanto and into southern parts of Tohoku can expect most of the heavier bouts of rain.
The weakened state of this system means winds are expected to bring only minor impacts.
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However, rainfall totals of 25 to 50 mm (1 to 2 inches) are expected across southern Japan with an AccuWeather Local StormMax™ of 100 mm (4 inches).
Normally, only minor impacts would be expected with these rainfall amounts, but many of these areas are still recovering from the devastating impacts from former Typhoon Hagibis as well as another round of heavy rain during the past week.
Impacts from Neoguri include flash flooding, mudslides and travel disruptions. Some coastal flooding is possible, especially along southern- and eastern-facing shores as the storm moves nearby.
The saturated nature of the soil will make it easier for gusty winds to knock over trees, which can lead to power outages and additional transportation delays.
Neoguri is expected to transition into a tropical rainstorm by the middle of the week with heavy rain spreading into eastern parts of Tohoku at this time
The storm is expected to race off to the east through the latter part of the week as drier conditions arrive over Japan.
Meanwhile, Tropical Storm Bualoi has developed several hundred miles to the southeast of Guam. Residents of eastern Asia, including Japan, should monitor this system as it is forecast to strengthen into a typhoon over the next several days. Bualoi may track near Japan as early as next weekend.
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