Heavy rain and strong storms possible Friday

Weather Blog
  • Periods of heavy rain likely Friday and Friday evening
  • A few strong to severe storms capable of damaging winds, hail and frequent lightning are possible
  • Flash flooding is possible Friday afternoon and evening

Peoria, Ill. – Less than a week after a storm system brought one to three inches of rain to Central Illinois, another slow-moving cold front is set to bring another round of heavy rain and strong storms to the region.

Severe Weather Threat

The Storm Prediction Center has placed much of Central Illinois within a slight risk for severe storms on Friday. While storms will be likely in the morning, the main risk of severe weather will come with the storms that develop in the afternoon and evening, mainly between 5 pm and midnight.

The primary threats will be damaging wind, hail, frequent lightning and heavy rain. While the risk is low, an isolated tornado or two will be possible west of the Illinois River.

Rainfall Forecast – Multiple Rounds of Rain Expected Friday

Round 1
The first push of rain will move in Friday morning with widely scattered shower and storms. These storms will not be severe but they may produce heavy rain.

Round 2
After a brief break early in the afternoon, showers and storms will redevelop late in the afternoon and continue throughout the evening. Some of these storms may be strong to severe with damaging winds, hail and frequent lightning. The risk of thunder and lightning will wane overnight but periods of moderate rain will continue.

Widespread rainfall amounts of 1-3 inches are expected across Central Illinois with the highest amounts along and west of the Illinois River.

Rainfall forecast through Saturday
  • Peoria: 1.0″ – 3.0″
  • Bloomington/Normal: 0.5″ – 1.50″
  • Galesburg: 2.0″ – 3.0″
  • Pontiac: 0.50″ – 1.50″
  • Peru/La Salle: 1.0″ – 3.0″
  • Lacon: 1.0″ – 3.0″
  • Canton: 1.0″ – 3.0″

While rainfall amounts are expected to be similar to what we experienced last weekend, locally higher amounts are possible. Unlike last week, the ground will not be able to absorb more than an inch or two of rain in a three hour period. This could lead to flash flooding in parts of Central Illinois by Friday evening, particularly where strong storms develop.

Additional showers and storms are possible Saturday and Sunday but these storms will be a little more hit and miss with lighter rainfall amounts.

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