Typhoon "Lionrock" about to hit northern Honshu, Japan


Tropical Cyclone "Lionrock," born August 19, is now approaching Japan and is expected to make landfall in northern Honshu around 07:30 UTC on August 30. Its second landfall is expected in extreme southeastern Russia sometime after 18:00 UTC on August 30.

As of 20:00 UTC on August 29, 2016, Typhoon "Lionrock" had maximum wind speed of 129 km/h (80.5 mph) near the center and wind gusts reaching 185 km/h (115 mph), according to the Japan Meteorological Agency. It was moving north at 25 km/h (15.5 mph) with estimated minimum central pressure of 965 hPa. At the time, it was located about 430 km (270 miles) east of Tokyo.

Typhoon "Lionrock" forecast track by JMA at 20:00 UTC on August 29, 2016

JMA's analysis of the typhoon published 20:45 UTC today, calls maximum wind speed near the center of 120 km/h (74.8 mph) at 06:00 UTC, about an hour and a half before northern Honshu landfall.

Lionrock is weakening and at 18:00 UTC on August 30, just before its Russia landfall, JMA expects it to have maximum wind speed near 102 km/h (63 mph).

Animated enhanced infrared satellite imagery depicts rapidly decaying deep central convection that is displaced just east of the low-level circulation center. Upper level analysis indicates Lionrock is south of the ridge axis in an area of low to moderate (10-15 knot) westerly vertical wind shear. Additionally, a trough to the west is causing subsidence along the western semi-circle. There is, however, moderate southeastward outflow, JTWC said.

Typhoon "Lionrock" forecast track by JTWC at 21:00 UTC on August 29, 2016

Typhoon "Lionrock" on August 29, 2016. Credit: NASA/NOAA/DoD Suomi NPP / VIIRS

Lionrock is expected to begin tracking more northwestward over the next 12 hours as steering transitions to the subtropical ridge to the northeast anchored near 45N south of Kamchatka. The system will cross Japan near Sendai and drift across the Sea of Japan before making a final landfall in Russia near Vladivostok. Although vws is expected to relax before Japan, upper-level subsidence, and cooling sea surface temperatures will continue to weaken the system. Afterward, rapid decay is expected as the system tracks across rugged terrain, cooler sea surface temperatures, and high vertical wind shear (greater than 40 knots) in the Sea of Japan. Typhoon "Lionrock" will dissipate before it makes landfall in Russia, according to JTWC's Prognostic Reasoning published 21:00 UTC on August 29.

Featured image: Typhoon "Lionrock" at 18:30 UTC on August 29, 2016. Credit: UW-CIMSS


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