Severe thunderstorms, sudden rain, and gusty winds are expected to hit northern and central Japan on June 12 [1].
The forecast warns of rapid weather shifts that could disrupt travel and safety across several prefectures. Because these storms are characterized by sudden onset, residents and travelers are urged to remain vigilant against lightning and wind damage.
According to reports from TBS NEWS DIG, based on data from the Japan Meteorological Agency, the instability is caused by upper-level cold air moving over the region [1]. This atmospheric shift creates a volatile environment that increases the risk of electrical storms.
In certain areas of Hokkaido, the Tohoku region, and the Kanto-Koshin area, which includes Tokyo and surrounding prefectures, the probability of lightning is expected to exceed 75% [1]. The agency said that sudden heavy rain and gusts of wind are likely to accompany these storms [1].
This volatility follows a period of calmer weather. On June 11, the rainy season front moved south of Japan, allowing sunshine to reach most of the country [1]. In Tokyo, the maximum temperature for June 11 was forecast at 26°C [1].
TBS NEWS DIG said that because of the high probability of lightning, attention to sudden strong rain, thunderstorms, and gusts is necessary [1].
Local authorities typically advise residents to seek shelter in sturdy buildings during such events. The Kanto-Koshin region is particularly sensitive to these shifts due to its high population density and critical infrastructure in the Tokyo metropolitan area.
“The probability of lightning is expected to exceed 75% in some areas.”
The transition from a clear day to high-probability lightning events within 24 hours highlights the volatility of the Japanese rainy season. The 75% lightning probability marker suggests a high likelihood of localized disruptions to power grids and transportation, particularly in the densely populated Kanto-Koshin corridor.
