NASA has released a satellite map of the continental United States and Canada showing how the countrys major cities are affected by severe weather.
The satellite map, released today (July 1), shows that the continental U.S. is at its worst with severe storms, hail and damaging winds of 70mph (112km/h) and rain of up to 40 inches (100cm).
It also shows that Canadian cities such as Toronto, Montreal and Vancouver have the worst weather.
It is not yet clear how widespread the effects of severe weather will be.
The United States, Canada and Mexico have experienced several large tornadoes and flash floods in recent days, and are all on the front lines of the ongoing storm system.