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Japan issues critical weather alerts as Typhoon 6 intensifies across Shikoku
Emergency safety orders issued for dozens of households as power outages affect 17,000 residences across the region.
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Event
Line-shaped precipitation band develops in southern Tokushima, raising disaster risk
The Japan Meteorological Agency issued a 'linear rainband imminent prediction' weather disaster warning at 01:13 on June 3, 2026. The warning indicates a high probability of a linear rainband forming within three hours in southern Wakayama, southern Mie, and southern Tokushima prefectures. Concurrently, an 'emergency safety assurance' order was issued for 31 households (63 people) in the Chosei district of Anan, Tokushima, as disaster risk levels increased.
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Background
Why this event matters
The Japan Meteorological Agency (JMA) issued a meteorological disaster warning at 1:21 am on June 3, 2026, for southern Tokushima Prefecture, confirming the formation of a line-shaped precipitation band. This phenomenon, characterised by a line of developing cumulonimbus clouds, has triggered heavy rainfall and heightened risks of landslides and flooding. In response, emergency safety measures were mandated for 63 individuals across 31 households in the Chosei district of Anan. Concurrently, approximately 17,000 households across the four Shikoku prefectures experienced power outages as of 1:00 am on June 3. The event is associated with Typhoon 6, which has also caused transport disruptions, including flight cancellations at Haneda Airport and potential Shinkansen suspensions.
event-brief
Line-shaped precipitation band develops in southern Tokushima, raising disaster risk
The Japan Meteorological Agency (JMA) issued a meteorological disaster warning at 1:21 am on June 3, 2026, for southern Tokushima Prefecture, confirming the formation of a line-shaped precipitation band. This phenomenon, characterised by a line of developing cumulonimbus clouds,
Fact cards
entity brief
Line-shaped precipitation band develops in southern Tokushima, raising disaster risk: key people and institutions
Key entities: Japan Meteorological Agency, Wakayama Prefecture, Mie Prefecture, Tokushima Prefecture, Typhoon 6, Anan.
timeline brief
Line-shaped precipitation band develops in southern Tokushima, raising disaster risk: timeline
2 June 2026: JMA issues "line-shaped precipitation band imminent prediction" for parts of Kochi, northern Tokushima, Wakayama, and Mie. 3 June 2026, 1:00 am: Approximately 17,000 households across Shikoku experience power outages. 3 June 2026, 1:21 am: JMA issues a meteorological
Timeline
2 June 2026
JMA issues "line-shaped precipitation band imminent prediction" for parts of Kochi, northern Tokushima, Wakayama, and Mie.
3 June 2026, 1:00 am
Approximately 17,000 households across Shikoku experience power outages.
3 June 2026, 1:21 am
JMA issues a meteorological disaster warning for southern Tokushima Prefecture, confirming the development of the line-shaped precipitation band.
3 June 2026, post-1:21 am
Emergency safety measures ordered for 63 people in 31 households in the Chosei district of Anan, Tokushima.