As cleanup continues from last week's storms, more severe weather is in the forecast for this week, with the greatest threat on Wednesday.

The Ocean Observatories Initiative is a network of more than 900 ocean sensors built at a cost of $386 million. Over the last decade it has tracked ocean circulation, marine ecosystems, climate change and extreme weather.

The National Weather Service will be surveying damage from multiple reported tornadoes that touched down Thursday, while recovery efforts continue from the derecho that walloped Chicago on Wednesday.

The National Weather Service is tracking two rounds of severe weather Thursday.

Chicagoans should prepare for multiple rounds rounds of thunderstorms and uncomfortably hot and humid conditions on Wednesday and Thursday.

WTTW News Explains on the common myths around tornadoes and how the weather events can hit Chicago.

Since March, multiple rounds of severe storms have caused flooding, plus hail damage and even tornadoes. A warmer atmosphere can hold more moisture, and that moisture can turn into rainfall.

Thunderstorms dumped 2.43 inches of rain at O'Hare Airport, Chicago's official weather station.

Chicagoans should prepare for anything weather-wise on Tuesday as meteorologists track storms potentially developing to the west.

The Chicago White Sox home opener scheduled for Thursday was postponed due to weather. Thunderstorms are in the forecast for most of Thursday afternoon.

March weather madness continued Monday with record-setting warmth followed by thunderstorms, and a cool down on the way.

Intense thunderstorms spawned at least four tornadoes across northern Illinois and northwest Indiana on Tuesday, with at least two killed in Indiana as damage assessments continue.

Severe thunderstorms are expected throughout northeast Illinois late Tuesday afternoon into the evening, bringing with them the threat for damaging hail and winds, flash flooding and possible tornadoes south of the I-80 corridor.

Winter in Chicago recorded far less snow than normal, and temperatures for the season were close to normal despite January’s deep freeze.

Vehicles across the city were coated in dirt Wednesday thanks to a perfect storm of events.

The National Weather Service is predicting highs in the 50s for the Chicago region through early next.