Sunday, September 30, 2012

Tropical Storm Jelawat Update #22

Tropical Storm Jelawat is now exiting into the North Pacific after moving across Honshu last night. The storm was last located approximately 280km southeast of Sapporo in Hokkaido. Maximum sustained winds are down to 85kph with gusts of up to 120kph. Jelawat is moving northeastward at a whopping speed of 75kph!

IR Image from NRLMRY

Latest satellite image shows that much of Jelawat is still intact with convective activity still surrounding the northern half of the circulation. The system, however, is becoming more embedded with the baroclinic zone in this region and the sheared appearance and the really fast movement is indicative of the strong westerly winds in this part of the Pacific. We expect Jelawat to complete extra-tropical transition later tonight.

Radar Image from JMA

Despite the weakening, convection associated with Jelawat is still bringing widespread rains across much of Hokkaido and even into the Kuril Islands (Chishima Islands). Some areas can still get as much as 50mm in the next 3-6 hours. Much of the rain should taper off later this afternoon since Jelawat is moving really fast. For more radar images, warnings, and forecasts for Japan, please click HERE

Jelawat moved across Honshu last night bringing gusty winds across Chubu and Kanto Regions. Even Tokyo area reported strong winds and occasional heavy rains. Many stations have reported receiving rainfall amounts between 200 and 400mm in the past 24 hours with some stations exceeding 500mm. Thankfully, the weather across Japan should be improving throughout today.

We'll have another update later this afternoon.
Issued (2230 UTC) 630am PhT 100112

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