In late June through mid-July 2018, successive heavy downpours in southwestern Japan resulted in widespread, devastating floods and mudflows.

[4] Approximately 54,000 members of the Japan Self-Defense Forces, police and firefighters searched for the people trapped or injured in landslides and flooding triggered by the heavy rain, while the Japanese government set up a liaison unit at the crisis management center of the prime minister's office to gather information.

[7] The surge of moisture brought north by the typhoon interacted with and enhanced precipitation along the front in Kyushu, Shikoku, and western and central Honshu.

[10] The torrential rain caused landslides and flash flooding, with water levels reaching 5 m (16 ft) in the worst hit areas.

[14] As the rain lessened on July 9, high temperatures reaching 30 °C (86 °F), coupled with some 11,200 households without electricity, raised concerns over heatstroke and unsafe drinking water.

[16] Throughout the affected areas at least 225 people died in various flood-related incidents,[2] primarily due to mudslides, landslides and vehicles being swept away by the flood waters.

At least ten people were buried inside their homes in Higashihiroshima; rescuers were able to confirm seven survived but remained trapped as of 7 July.

[22] Delivery companies Sagawa Express Co. and Yamato Transport Co, with cargo service Japan Freight Railway Co. reported that some of their shipments into and out of the affected areas have been either reduced or suspended.

Regional supermarkets have also been affected, with outlets closed or hosting shortened service hours due to delivery delays and/or product shortages.

[25] Chief Cabinet Secretary Yoshihide Suga, reported that the government had set up a task force which was coupled with 2 billion yen ($18 million) to hasten delivery of supplies and other support items for evacuation centers and residents in the region.

[26] Japanese soldiers patrolled the neighborhoods during the storms and at the end, knocking on doors and inquiring whether residents were safe or in need of aid.

[32] Israel : The Israeli humanitarian aid organization IsraAID sent an emergency response team to Western Japan on 9 July, to distribute urgent relief items, assessing the medical and post-trauma psycho-social needs.