A tropical depression south of Japan is expected to develop into Typhoon 24 on Tuesday [1].

This development threatens to bring severe weather to the region, potentially disrupting travel and safety as the system moves toward the mainland.

Meteorologists said warm sea surface temperatures are providing the energy necessary for the tropical depression to strengthen into a typhoon [1, 2]. While some reports placed the system near Wake Island [2, 3], others identified the observation point as the waters south of Japan [1].

Forecasters said the system may trigger warning-level heavy rain around Sept. 4 [1]. Other projections suggest maximum wind speeds could reach 18 m/s [2].

Simultaneously, Japan continues to struggle with extreme late-summer heat. In Nara, the maximum temperature reached 37.2°C [1]. In contrast, central Tokyo recorded a lower high of 28.6°C [1].

Tokyo's recent weather patterns have been unusual. The city has seen temperatures remain below 30°C for three consecutive days [1]. This specific cooling trend is the first time such a pattern has occurred in four years [1].

Weather officials said the combination of lingering heat and an approaching typhoon creates a volatile atmospheric environment. Residents are advised to monitor updates from the Japan Meteorological Agency as the storm develops.

A tropical depression south of Japan is expected to develop into Typhoon 24 on Tuesday.

The transition from a severe heatwave to a potential typhoon highlights the volatility of Japan's late-summer weather. The arrival of Typhoon 24 could provide relief from the extreme temperatures seen in Nara, but the risk of warning-level rainfall introduces new hazards, including potential flooding, and landslides in vulnerable areas.