Chicago experiences flash floods following Tuesday storms. Here's how to commute safely
Here's what we know.
Flash flooding in Chicago
A stationary thunderstorm produced localized flash flooding in west-central Chicago on the evening of July 8. The worst of the flooding occurred west of I-90 and along I-290, where 2-6 inches of local rain fell in 1-2 hours.
There were numerous reports of flooded viaducts and water rescues, and a few reports of flooded basements.
Chicago rainfall
A gauge west of the United Center measured 5.12 inches of rainfall in just 90 minutes – a staggering amount.
Meanwhile, other gauges in various locations tracked the following rainfall over the course of three hours:
2 E Garfield Park: 5.45 inches
Ukrainian Village: 2.78 inches
2 W Chicago Loop: 3.81 inches
Lower West Side: 2.78 inches
Others are reading: Illinois to experience localized flooding Friday and Saturday. Here's how to stay safe
Flash flooding safety tips
The most important thing to remember in areas where there is flooding is: "Turn around, don't drown," according to the NWS.
It is crucial that you turn around if you see standing or flowing water, as it only takes 12 inches of water to sweep your car away. If your vehicle stalls, abandon it immediately and seek higher ground.
The NWS advises commuters to never drive around barriers blocking flooded areas and to follow signage that advises you to turn around. It is possible for roads to collapse underwater, making them impossible for drivers to see.
Flood waters can also hide rocks, trees, trash and other debris that can be dangerous to someone in their path.
Additional flood safety tips include:
Staying away from flood-prone areas such as stream beds, drainage ditches, and culverts during periods of heavy rain
Moving to higher ground if flooding threatens your area
Remaining alert during periods of heavy rain if you live or work in flood-prone areas
Being extra cautious at night when the dark makes it harder to recognize flood danger
Flood terminology explained
If flooding is possible or expected, you should know the difference between a watch, advisory and warning, according to the NWS.
Flood watch: A flood watch is issued when conditions are favorable for flooding. It does not mean flooding will occur, but it is possible.
Flood advisory: A flood advisory is issued when flooding is not expected to be bad enough to issue a warning. However, it may cause significant inconvenience, and if caution is not exercised, it could lead to situations that may threaten life and/or property.
Flood warning: A flood warning is issued when flooding is imminent or occurring.
Flash flood warning: A flash flood warning is issued when a flash flood is imminent or occurring. If you are in a flood-prone area, move immediately to high ground.
Flooding in Illinois
The NWS offers an interactive map on its website that teaches the types of flooding most commonly experienced by states and how you can stay safe in flooded areas.
On the Illinois page, the service warns of flash flooding, river flooding, ice/debris jams and more. It also includes links to the websites for the Central Illinois and Chicago NWS offices.
Central Illinois weather radar
Chicago weather radar
This article originally appeared on Journal Star: Flash flooding in Chicago. How to stay safe in flooded areas
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