Tropical Storm Prapiroon formed in west Pacific

tropical-storm-prapiroon

Tropical Depression 22W become Tropical Storm Prapiroon on October 7 and now is located approximately 640 nm southeast of Kadena AB, Okinawa, Japan. The system is moving westward at 06 knots (11 km/h) over the past six hours. Maximum sustained winds are about 5o knots (93 km/h) with gusts up to 65 knots (120 km/h).

Upper-level analysis continues to show Prapiroon has near-radial outflow in an area of low (05-10 knot) vertical wind shear. Due to warm ocean waters and low wind shear over the region, Prapiroon is expected to continue strengthening and should become a typhoon by midweek.

As the trough currently located over eastern Japan propagates eastward, the subtropical ridge is forecast to re-build
briefly, allowing Prapiroon to continue tracking westward.

For now it looks like Prapiroon could target Japan next week.

The majority of the dynamic models indicate increased east-northeasterly winds (gale-force) over Okinawa by the end of the week due to an enhanced gradient between Prapiroon and an east-west oriented frontal system.

Satellite Animations

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