Active rain clouds associated with Typhoon No. 6 are moving toward Shikoku tonight and will head toward the Kanto region tomorrow [1], [2].
The weather system poses a significant risk to millions of residents as the typhoon may intensify and make landfall, potentially causing widespread flooding and infrastructure damage.
Meteorologists said the rain clouds are intensifying north of the typhoon's center and along a stationary seasonal rain front [2], [3]. This interaction has already led to extreme precipitation in some areas. In Tano, Miyazaki City, 24-hour rainfall exceeded 300 millimeters [4].
The storm is expected to make its closest approach to Yamaguchi Prefecture on the night of June 2, 2026 [3]. From there, the system is projected to move east, bringing heavy rain to the Pacific side of Shikoku, and the Tokai region before reaching Kanto on June 3, 2026 [2], [5].
Forecasters said the combination of the typhoon's northward movement and the stagnant rain front is creating a volatile environment. The movement of these clouds is expected to be rapid, shifting the primary impact zones from the western regions to the eastern coast within a 24-hour window [2], [5].
Local authorities are monitoring the potential for the storm to develop further as it traverses the archipelago. The risk of landslides and urban flooding remains high in the projected path of the rain clouds [1], [2].
“Typhoon No. 6 may intensify and make landfall.”
The synchronization of Typhoon No. 6 with a stationary rain front creates a 'synergistic' weather event, where the typhoon acts as a pump, feeding moisture into the front. This often results in rainfall totals that far exceed what a typhoon would produce alone, increasing the risk of flash floods in the densely populated Kanto region.
