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High Rainfall Forecasted for Miami on September 21, 2026
An automated alert from wweather1.com forecasts high rainfall for Miami, United States, on September 21, 2026. The predicted precipitation of 88.05 mm exceeds the system threshold of 30 mm.
According to forecast data from wweather1.com, Miami is projected to experience a high-severity rainfall event on September 21, 2026, starting at 00:00:00 UTC.
The automated tracking system issued an alert after the forecast metric recorded an expected precipitation total of 88.05 mm. This measurement crosses the established threshold of 30 mm for rain notifications.
The high-severity rain alert was generated automatically by wweather1.com based on its internal forecast models.
Why it is dangerous and what to do
⚠️ Safety
• Avoid driving through flooded roads or areas with standing water.
• Stay indoors during heavy downpours when possible.
• Monitor local weather reports for updated conditions.
📊 The numbers, from wweather1 data
Miami: now +27°, Mostly clear.
That is 1° below the September climate norm.
The record for this date is +32° (1989).
Three-day forecast: 21 September: +28°/+24° · 22 September: +28°/+24° · 23 September: +28°/+24°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates. 🌍 Weather in nearby cities
Havana
now
☀️
+28°
Jacksonville
now
⛅
+26°
Miami
now
🌤️
+27°
Tampa
now
☀️
+26°
Orlando
now
☀️
+27°
Nassau
now
☁️
+27°
📰 Data source: wweather1. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.