INDIANA — A heavy rain discussion has been issued from the Weather Prediction Center, with no surprise given the setup, covering the entire Miami Valley. Widely scattered areas of flash flooding will be possible from eastern Illinois into central Indiana and western and central Ohio over the next three to five hours. Slow movement of heavy rain will support hourly rainfall of 1 to 2 or more inches, with potential for 2 to 4 or more inches of total rainfall through 2 p.m.
Slow-Moving Rain Axis Stretches Across Three States
The axis of heavy rain is expected to align roughly west to east, stretching from eastern Illinois through central Indiana and into western and central Ohio. This band remains somewhat transient, meaning the exact location of the heaviest rain could shift slightly as the system moves through.
Embedded areas of vorticity maxima are visible within the broader rain shield, indicating pockets where rotation and lift could enhance rainfall rates even further within the highlighted zone.
Flash Flood Threat Remains Isolated to Widely Scattered
Because the heavy rain axis remains somewhat transient, the flash flood threat appears likely to stay isolated to widely scattered in nature rather than widespread. However, some locations within the highlighted threat area have lower flash flood guidance of about 2 inches in three hours, meaning those spots could flood more easily than surrounding areas.
Peak Rainfall Totals Expected to Reach 2 to 4 Inches Through 2 PM
Through 2 p.m., peak total rainfall across the highlighted zone is expected to range from 2 to 4 inches, though forecasters caution that locally higher totals cannot be completely ruled out. Residents across the Miami Valley and surrounding areas of Illinois, Indiana and Ohio should monitor conditions closely as this slow-moving heavy rain continues through the overnight hours. Stay with NapervilleLocal.com for the latest weather updates and local forecast coverage.…