Rain is forecast across eastern Japan and Tōhoku on Thursday, with thunderstorms and heavy rain expected during the night [1, 2].
The weather shift comes as Typhoon 9 forms in the southern Pacific, potentially altering regional weather patterns and increasing the risk of flooding in northern territories.
Typhoon 9 formed near the Marshall Islands on Thursday morning [1]. The storm is generating rain-bearing weather systems that are moving northward, bringing the current instability to the eastern part of the country [1, 2].
National temperature forecasts for Thursday show a wide range. Maximum temperatures nationwide are expected to be between 25 °C and 30 °C [1]. However, specific regional highs vary significantly across the archipelago.
In the north, Sapporo is expected to reach 25 °C and Aomori 26 °C [1]. Morioka will see a high of 28 °C, while Sendai is forecast at 24 °C [1]. Further south, Niigata and Matsue are both expected to hit 25 °C [1].
Central regions will see temperatures ranging from 27 °C in Nagano to 28 °C in Nagoya [1]. Kanazawa is forecast at 26 °C [1]. Tokyo is expected to be cooler than some neighbors with a high of 23 °C [1].
Western and southern cities will experience higher heat. Osaka and Hiroshima are both forecast at 29 °C [1]. Okayama will reach 30 °C [1]. In the far south, Kochi and Naha are expected to hit 32 °C [1], while Kagoshima reaches 31 °C [1]. Kushiro remains the coolest city with a high of 18 °C [1].
Authorities are monitoring the path of Typhoon 9 as the rain-bearing systems continue to impact the Tōhoku region [2].
“Rain is forecast across eastern Japan and Tōhoku on Thursday, with thunderstorms and heavy rain expected at night.”
The simultaneous formation of Typhoon 9 and the presence of rain-bearing systems in Tōhoku indicate a period of high atmospheric instability. While the typhoon is currently distant, its ability to push moisture-rich systems northward can trigger localized flooding and severe thunderstorms even before the center of the storm reaches Japanese waters.
