As Japan braces for a significant weather event, the peak of rainfall is anticipated on the morning of Saturday, May 10, 2025. According to a weather forecast map, a low-pressure system is situated in the Sea of Japan, with a front extending from it. This setup is expected to concentrate wet air, leading to heavy rain as it moves northward, particularly in the morning hours.
The forecast predicts substantial rainfall amounts by the evening of Saturday, with areas in the western and central regions expecting up to 120mm of rain, while the eastern part may see around 100mm. In the Izu region, the rainfall could reach as high as 150mm. Such heavy precipitation raises concerns about potential flooding, especially in underpasses and other low-lying areas.
Weather experts warn that the intensity of the rainfall could lead to dangerous conditions. "During periods of heavy rain, flooding is likely to occur, especially in urban areas where water tends to accumulate," a meteorologist noted. "It's advisable to avoid driving through underpasses during the morning hours of May 10, as water may accumulate rapidly there." This warning emphasizes the need for caution as residents prepare for the deluge.
Looking ahead, rain is also forecasted for Sunday, May 11, 2025. The weather is expected to improve in the afternoon of May 10, with clouds clearing and sunny spells breaking through. However, the weather will start to deteriorate again from Sunday evening. Therefore, it is recommended that individuals carry umbrellas when venturing out on May 11, as rain could return.
In terms of temperatures, May 11 is expected to be warmer, with highs potentially exceeding 25 degrees Celsius. This rise in temperature, coupled with the incoming warm air from the front, could lead to a muggy atmosphere. Residents are advised to stay hydrated and prepare for a shift in the weather.
The weekly weather forecast indicates that the rain will cover a broad area this weekend, with sunny weather and warmer summer-like conditions anticipated around the middle of the upcoming week. This is a welcome change after the heavy rains expected over the weekend.
On Sunday, May 11, rain is likely to persist due to the influence of fronts and low pressure. The front near the south coast of Honshu is moving northward, causing cloud cover to spread across western and eastern Japan. Rain is particularly likely in the afternoon, especially on the Pacific side, making it prudent for residents to carry umbrellas even if the morning starts off dry.
In Okinawa, the situation is particularly concerning as the front is projected to stagnate until May 11, leading to the possibility of extremely heavy rain, with rates exceeding 50mm per hour in some localized areas. This raises alarms for potential road flooding and river overflow, prompting officials to issue warnings for residents to be vigilant.
As the week progresses, the weather is expected to gradually recover starting Monday, May 12, 2025. However, forecasters caution that conditions may decline again towards the end of the week, leading to further instability in the weather pattern.
In summary, as Japan prepares for a weekend of heavy rain, officials and meteorologists are urging residents to take necessary precautions. With significant rainfall amounts predicted and the potential for flooding, it is crucial for individuals to stay informed and prepared. The weather is expected to improve mid-week, offering a brief respite before the potential return of adverse conditions.
