A sharp drop in temperature is on the way in parts of the US. Today, Chicago is still hovering around 25 degrees, but tomorrow temperatures will suddenly plummet to around 5 degrees.

After that, the temperature will shoot back up again, just like on a rollercoaster. By Thursday, the thermometer will be showing around 20 degrees again.

Of course, this sudden drop in temperature won’t come without consequences. Things are set to get pretty rough, particularly in Iowa and northern Illinois: expect severe thunderstorms with heavy rain, hail and gusts of wind, and even the odd supercell.

On Thursday, the cold snap will reach the east coast: temperatures in New York will drop to 8 degrees, whilst in Boston they’ll be as low as a mere 4 degrees.