A storm system will move across Iowa from Wednesday into Thursday, bringing widespread heavy rainfall and scattered thunderstorms to the region.
Storms could develop late Wednesday morning, with another round possible on Thursday. Some of these storms may become severe.
Recent Rainfall Adds to Flood Risk
This system follows recent rainfall across the area. In Mount Pleasant, 0.61 inches of rain has already fallen over the past 24 hours. That additional moisture is leaving the ground saturated and increasing the risk for runoff and localized flooding.
Main Concerns
- Localized flooding, especially Wednesday night into Thursday morning
- Heavy rainfall rates exceeding 0.25” per hour at times
- Ponding on roads and in parking lots
- Reduced visibility and hazardous driving conditions
- Rising water in creeks, streams, and low-lying areas
Rainfall Timing
- Rain becomes widespread overnight Wednesday
- Heaviest rainfall expected 1 a.m. to 10 a.m. Thursday
- Rain fills in from south to north overnight
Expected Rainfall Totals
- 1 to 2 inches across much of the area
- Localized totals over 3 inches possible
Flood Threat Overview
- Downpours: Slowed travel
- Heavy rainfall: Ponding on roads and parking lots
- Torrential rainfall: Flooding of roads, fields, and basements; rapid rises in creeks and streams
- Higher-end threat: Potential for impassable roads and dangerous flooding conditions
Safety Tips
- Never drive or walk through flooded roadways
- Be alert for water-covered roads during the Thursday morning commute
- Monitor conditions if you live near creeks or low-lying areas
- Check river levels and forecasts at: water.noaa.gov
Looking Ahead
Another storm system is expected Friday, bringing more heavy rain and the potential for severe weather, with all hazards possible.