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Sendai Forecasted for High Rainfall on September 15
An automatic alert from wweather1.com forecasts high precipitation for Sendai, Japan, on September 15, 2026. Expected rainfall of 48.6 mm exceeds the system's high-severity threshold.
According to forecast data from wweather1.com, a high-severity rain event is scheduled to affect Sendai, Japan, starting at 00:00:00 UTC on September 15, 2026.
The system issued an automatic alert after the predicted precipitation reached 48.6 mm. This projected value crosses the established monitoring threshold of 30 mm for rain intensity.
The event details are based entirely on automated processing of wweather1.com forecast data for the region.
Why it is dangerous and what to do
⚠️ Safety
• Monitor local weather updates and official announcements for changing conditions.
• Exercise caution on roads and avoid poorly drained or low-lying areas during heavy rain.
• Ensure waterproof gear or umbrellas are accessible if going outdoors.
📊 The numbers, from wweather1 data
Sendai: now +16°, Mostly clear.
That is 3° above the October climate norm.
The record for this date is +24° (1990).
Three-day forecast: 13 October: +22°/+16° · 14 October: +21°/+14° · 15 October: +22°/+12°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates. 🌍 Weather in nearby cities
Tokyo
now
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+19°
Yokohama
now
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+21°
Osaka
now
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+22°
Nagoya
now
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+20°
Sapporo
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+17°
Kawasaki
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+21°
📰 Data source: wweather1. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.