International
Updated 30 Jun, 00:00 UTC

Tropical Storm Jangmi brings flood warnings to Tokyo region as evacuations widen

Updated 30 June 2026, 00:00 UTC | TOKYO — Tropical Storm Jangmi brought heavy rain into Japan’s Tokyo region on Wednesday, 3 June, with the Japan Meteorological Agency warning of flooding and AP reporting disruption to roads, flights and trains.

Belgium Impulse Editorial·30 June 2026·2 min read·
Well established· 1 primary source + 1 official document + 2 independent reporting sources
Tokyo — Tokyo
WikimediaWikimedia Commons

In 30 seconds

  • AP reported that Jangmi moved into the Tokyo region on Wednesday, 3 June 2026, bringing heavy rain and flood risk.
  • JMA, cited by AP, said the storm had sustained winds of 90 kph east of Shima city around midmorning.
  • Het Nieuwsblad reported evacuation instructions affecting 370,000 people; The Guardian later cited 1.52 million advised to evacuate.
  • AP reported hundreds of flights cancelled, train services suspended or delayed, and more than 5,000 homes without power.

The subject is

Event

Tropical Storm Jangmi

storm bringing heavy rain and flood risk to Japan's Tokyo region

Why it matters

storm bringing heavy rain and flood risk to Japan's Tokyo region

About

Tropical Storm Jangmi, known in the Philippines as Tropical Storm Seniang, was a weak but deadly tropical cyclone that impacted the south-central Philippines in late December 2014. Jangmi formed as a tropical depression on December 28 east of Mindanao. The system tracked west-northwest and soon became Tropical Storm Jangmi. Jangmi made landfall in Surigao del Sur later that day and traversed the northeastern Mindanao.

, also referred to in Japanese reporting as Typhoon No. 6. According to AP, Jangmi weakened after making landfall in
Place

Wakayama prefecture

place where Jangmi made landfall before weakening

Why it matters

place where Jangmi made landfall before weakening

About

Wakayama Prefecture is a prefecture of Japan located in the Kansai region of Honshu. Wakayama Prefecture has a population of 876,030 and a geographic area of 4,724 square kilometres (1,824 sq mi). Wakayama Prefecture borders Osaka Prefecture to the north, and Mie Prefecture and Nara Prefecture to the northeast.

but still carried sustained winds of 90 kph as it moved toward the
Place

Tokyo

region affected by heavy rain, flooding risk and evacuations

Why it matters

region affected by heavy rain, flooding risk and evacuations

About

Tokyo, officially the Tokyo Metropolis, is the capital and most populous city of Japan. The population of the city proper was over 14 million as of 2023. The Greater Tokyo Area, which includes Tokyo and parts of six neighboring prefectures, is the third-most populous metropolitan area in the world, with 33 million residents as of 2025.

region. The
Place

Japan

country affected by Tropical Storm Jangmi

Why it matters

country affected by Tropical Storm Jangmi

About

Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asian mainland, it is bordered to the west by the Sea of Japan, the Sea of Okhotsk in the north, and the East China Sea in the south. The Japanese archipelago consists of four major islands alongside over 14,000 smaller islands.

Meteorological Agency is the official weather authority for Japan and the regional typhoon centre for the northwest Pacific.

Background

Japan faces regular tropical cyclones from summer into autumn, but AP and The Guardian both reported that Jangmi’s main danger near Tokyo came from rainfall and swollen rivers rather than only wind. The Guardian said Jangmi had earlier produced record June rainfall in

Place

Chiyoda, Tokyo

place where Jangmi produced record June rainfall

Why it matters

place where Jangmi produced record June rainfall

About

Chiyoda , officially known as Chiyoda City in English, is a special ward of Tokyo, Japan. Located in the heart of Tokyo's 23 special wards, Chiyoda consists of the Imperial Palace and a surrounding radius of about a kilometer, and is known as the political and financial center of Japan. As of October 2020, the ward had a population of 66,680, and a population density of 5,709 people per km2, making it by far the least populated of the special wards.

, and damaged homes and infrastructure elsewhere in Japan.

Context & what happens next

What to do

Travellers should avoid non-essential movement during active warnings, keep phones charged, use official Japanese alerts, avoid rivers and underpasses, and confirm flights and trains before leaving for the airport or station.

Evidence
Well established · 1 primary source + 1 official document + 2 independent reporting sources
Explore evidence
Het Nieuwsblad
Publication date unavailable
Retrieved by ODIN:
30 Jun 2026
Read original
Associated Press
Published:
3 Jun 2026, 02:00
Retrieved by ODIN:
30 Jun 2026
Read original
The Guardian
Published:
5 Jun 2026, 02:00
Retrieved by ODIN:
30 Jun 2026
Read original
Japan Meteorological Agency
Publication date unavailable
Retrieved by ODIN:
30 Jun 2026
Read original

Voices & reactions

What the main actors are doing

Reported positions, summarised — not direct quotations

Japanese weather and municipal authorities

Their priority is early movement away from rivers, low-lying streets and unstable slopes. JMA warnings, as reported by AP, focused on flood danger in central and eastern Japan and urged residents in exposed areas to move to higher ground.

Transport operators and travellers

Airlines, rail companies and commuters face a different operational pressure: reducing movement while keeping essential routes safe. AP reported hundreds of flight cancellations and delayed or suspended train services as rain disrupted the Tokyo region.

The story, connected

Explore the people, places and ideas in this story

Go beyond the headline. Open a card for sourced context, maps, official links and the other subjects connected to this report.

Concepts

Tropical Storm Jangmi

storm bringing heavy rain and flood risk to Japan's Tokyo region

In this story

storm bringing heavy rain and flood risk to Japan's Tokyo region

Background

Tropical Storm Jangmi, known in the Philippines as Tropical Storm Seniang, was a weak but deadly tropical cyclone that impacted the south-central Philippines in late December 2014. Jangmi formed as a tropical depression on December 28 east of Mindanao. The system tracked west-northwest and soon became Tropical Storm Jangmi. Jangmi made landfall in Surigao del Sur later that day and traversed the northeastern Mindanao.

Places

Tokyo

region affected by heavy rain, flooding risk and evacuations

In this story

region affected by heavy rain, flooding risk and evacuations

Background

Tokyo, officially the Tokyo Metropolis, is the capital and most populous city of Japan. The population of the city proper was over 14 million as of 2023. The Greater Tokyo Area, which includes Tokyo and parts of six neighboring prefectures, is the third-most populous metropolitan area in the world, with 33 million residents as of 2025.

Places

Japan

country affected by Tropical Storm Jangmi

In this story

country affected by Tropical Storm Jangmi

Background

Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asian mainland, it is bordered to the west by the Sea of Japan, the Sea of Okhotsk in the north, and the East China Sea in the south. The Japanese archipelago consists of four major islands alongside over 14,000 smaller islands.

Organisations

AP

reported disruption to roads, flights and trains and details on Jangmi

In this story

reported disruption to roads, flights and trains and details on Jangmi

Background

The Associated Press (AP) is an American not-for-profit news agency headquartered in New York City. Founded in 1846, it operates as a cooperative, unincorporated association, and produces news reports that are distributed to its members, major U.S. daily newspapers and radio and television broadcasters. Since the Pulitzer Prize was established in 1917, the AP has earned 60 of them, including 36 for photography.

Places

Zenpukuji River

river near Tokyo where residents were told to seek shelter

In this story

river near Tokyo where residents were told to seek shelter

Background

Zenpukuji River is a class A river that flows through Tokyo and is a tributary of the Kanda River, which is part of the Arakawa River system.

Organisations

JMA

issued warnings covering rivers and vulnerable low-lying areas

In this story

issued warnings covering rivers and vulnerable low-lying areas

Background

The Japan Meteorological Agency is a division of the Ministry of Land, Infrastructure, Transport and Tourism dedicated to the scientific observation and research of natural phenomena. Headquartered in Minato, Tokyo, the agency collects data on meteorology, hydrology, seismology, volcanology, and other related fields.

Places

Wakayama prefecture

place where Jangmi made landfall before weakening

In this story

place where Jangmi made landfall before weakening

Background

Wakayama Prefecture is a prefecture of Japan located in the Kansai region of Honshu. Wakayama Prefecture has a population of 876,030 and a geographic area of 4,724 square kilometres (1,824 sq mi). Wakayama Prefecture borders Osaka Prefecture to the north, and Mie Prefecture and Nara Prefecture to the northeast.

Places

Chiyoda, Tokyo

place where Jangmi produced record June rainfall

In this story

place where Jangmi produced record June rainfall

Background

Chiyoda , officially known as Chiyoda City in English, is a special ward of Tokyo, Japan. Located in the heart of Tokyo's 23 special wards, Chiyoda consists of the Imperial Palace and a surrounding radius of about a kilometer, and is known as the political and financial center of Japan. As of October 2020, the ward had a population of 66,680, and a population density of 5,709 people per km2, making it by far the least populated of the special wards.

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