Ice Jams and Flooding on Chicago-Area Rivers: What You Need to Know
Risk of Ice Jams and Flooding on the Rise
Forecasters are warning of the possibility of ice jams and flooding on multiple Chicago-area rivers due to a prolonged string of cold weather. According to a “Hydrologic Outlook” released by the National Weather Service, the risk of ice jams and flooding is rising on the Rock, Fox, Des Plaines, and Kankakee rivers, and that risk will continue to increase for several days.
The Prolonged Cold Spell
The National Weather Service blames the prolonged cold in the Chicago area in recent weeks, with temperatures failing to rise above the freezing mark for most of the month of January. This cold spell has been even more pronounced in recent days, with highs in the teens and low temperatures in the single digits each night, resulting in rapid ice formation on the rivers.
Minor Ice Jams Already Reported
Minor ice jams have already been reported on several rivers, but those jams could become more numerous and more serious in coming days, leading to an increased risk of associated flooding behind the jams as water has more difficulty flowing on the waterways.
Weather Forecast
While warmer temperatures are in the forecast for Thursday and Friday, with highs in the upper-30s and low-40s across the area, the weather likely won’t be warm enough to sufficiently melt ice and mitigate the risk of ice jams, forecasters say. Those temperatures are also expected to plummet again beginning Sunday, with highs in the single digits on Monday and Tuesday, according to longer-range forecast models. Overnight lows could also plunge below zero, allowing for rapid forming of ice.
Flash Flooding Possible
Forecasters warn that the rapid formation of ice can cause river levels to change quickly, leading to flash flooding in vulnerable areas. Residents in flood-prone areas are urged to check forecasts frequently and to be ready to take mitigation or evacuation measures when necessary.
Conclusion
It’s essential for residents in the Chicago area to stay informed about the weather forecast and to take necessary precautions to ensure their safety. If you live in a flood-prone area, make sure to check the latest forecasts and be prepared to take action if necessary.
FAQs
Q: What are ice jams?
A: Ice jams occur when a blockage forms in a river due to ice, causing the water level to rise and potentially leading to flooding.
Q: What causes ice jams?
A: Ice jams are caused by a combination of factors, including prolonged cold weather, rapid ice formation, and changes in river flow.
Q: What are the risks associated with ice jams?
A: The risks associated with ice jams include flooding, property damage, and potential harm to people and wildlife.
Q: What can I do to prepare for ice jams?
A: To prepare for ice jams, make sure to stay informed about the weather forecast, check the latest river levels, and be ready to take mitigation or evacuation measures if necessary.
