Flooding Threat in Central Illinois: 1-2” Rainfall Per Hour Could Inundate Roads Until Midnight

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Flash flood threat
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Springfield, Illinois – Slow-moving thunderstorms are pounding central Illinois with heavy rainfall Tuesday, prompting a Flood Watch across multiple counties, including Peoria, Springfield, and Macomb.

According to the National Weather Service in Lincoln, a stalled cold front is fueling repeated rounds of thunderstorms capable of dumping 1 to 2 inches of rain per hour through tonight. Flooding is most likely in low-lying areas, urban zones, and locations that have already seen significant rainfall in recent days.

Communities along I-55 and U.S. 136 should prepare for potential street flooding and rising creeks. Counties under the Flood Watch include Tazewell, McLean, Fulton, and parts of Sangamon. Rapid runoff could lead to road closures and hazardous driving after dark.

Residents are urged to clear storm drains, avoid walking or driving through flooded areas, and monitor local alerts. The National Weather Service also warns of potential rises in rivers and streams by early Wednesday.

The Flood Watch remains in effect through late Tuesday night, with additional watches possible if the storms persist into Wednesday morning.


📅 5-Day Central Illinois Weather Outlook:

  • Wednesday: Mostly cloudy, scattered storms. High 81°F. Flooding possible in low-lying areas.
  • Thursday: Partly sunny, cooler. High 77°F.
  • Friday: Dry and warmer. High 84°F.
  • Saturday: Sunny with slight rain chance late. High 87°F.
  • Sunday: Isolated storms. High 86°F, humid.