Rain-Weary Japan to Escape Direct Hit From Krovanh

By By Courtney Spamer, Meteorologist
September 21, 2015, 1:32:21 AM EDT

The Western Pacific Ocean remains active as another typhoon emerges. However, this one will miss Japan, helping to avoid even more catastrophic flooding across the country.

Late Tuesday night, local time, then-Tropical Depression 20W strengthened into a tropical storm, with wind speeds gusting to 83 km/h (52 mph). 20W, which eventually was named Krovanh, was about 450 miles northeast of Guam.

On early Thursday local time, Krovanh developed into a typhoon. After reaching the equivalent strength of a Category 2 hurricane, Krovanh has begun to weaken and is now a tropical storm. This weakening trend is expected to continue through the weekend leading to the eventual demise of the storm.


The tropical cyclone will remain away from land as it tracks to the northeast. Helping to divert its track even more, a system crossing Japan will draw in Krovanh's moisture and wisk it away from Japan this weekend.

“The projected path should keep the heaviest rain out of Japan,” AccuWeather Senior Meteorologist Jason Nicholls said on Tuesday.

“This would be good news, considering the recent heavy rain and flooding from Etau,” Nicholls added.

Even though Etau, once a tropical storm, weakened after making landfall and crossing over southern Honshu last week, flooding rainfall continued for days. Persistent and heavy rainfall across central and northern parts of the island brought flooded streets in Joso, Japan, prompting evacuations and air rescues for those stranded on rooftops.

Following more than 250 mm (about 10 inches) of rain in just a few days last week, Tokyo and the suburbs to the north certainly would not welcome any more rain this month.

AccuWeather Japan Weather Radar
Historic Flooding Strikes Japan in Wake of Etau


However, even the low pressure system moving from southwest to northeast across Japan did bringing some showers throughout the end of the week.

Although likely less rain than a direct hit by a tropical storm or typhoon, the city of Ofunato along the eastern coast of Honshu, received 131 mm (5.16 inches) of rain on Friday.

General amounts of 25 to 75 mm (1 to 3 inches) fell in the Tokyo and across the southern coasts of Honshu during the second half of the week. The city of Miyakejima

A shift in Krovanh's path, even just a bit closer to Japan, could have allowed the steering low to absorb the tropical moisture before moving away from the islands. However, the low pressure has crossed the islands quick enough to keep the rain threat from Krovanh off to the east through the weekend.

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