Japan's meteorological agency raised the volcanic alert level for Mount Fuji to two on May 20. The level indicates increased seismic activity and possible minor eruptions. All four main trails remain open but require additional safety equipment.
Prefectural governments now mandate helmets for every climber above the 2,500-meter mark. Rangers will conduct random checks at trailheads starting July 1. Violators face fines up to 50,000 yen and possible trail closure orders.
Seismic sensors recorded 47 small earthquakes in April, the highest monthly total since 2023. Ash fall models show potential impact on nearby towns within a 10-kilometer radius. Officials have pre-positioned evacuation shelters along the Yoshida trail.
Foreign climbers must register online at least 48 hours before their hike. Registration includes emergency contact details and insurance proof. English-language weather briefings are issued twice daily via the official app.
Guided tour operators report a 15 percent drop in bookings since the alert was raised. Several companies added extra guides and satellite communication devices. Insurance premiums for Fuji climbs increased by 30 percent this season.
Local hospitals in Fujiyoshida have added 20 beds for potential altitude or volcanic-related cases. Rescue teams conduct weekly drills through September. Climbers are advised to descend immediately if they feel tremors or notice sulfur odors.
The alert level will be reviewed every two weeks through the end of September. Officials expect the mountain to remain accessible unless activity escalates further. Travellers should monitor the Japan Meteorological Agency website for real-time updates before planning ascents.