‘Godzilla’ dust plume will bring technicolor sunsets

A hot desert wind is carrying a massive cloud of Saharan dust into the southern United States this week. Dust plumes from the Sahara routinely blow westward across the Atlantic at this time of year, but this event is a doozy — by some measures, the biggest in decades. And a second plume appears to be forming about a week behind the big one.

Across the southeastern U.S., from the Gulf Coast to the Carolinas and potentially as far north as Indianapolis and Cincinnati, dust effects will likely be visible in the coming days. Trillions of dust grains will reflect sunlight in every direction, creating milky white skies. The dusty haze reflects some sunshine back to space, cooling the surface a bit where the plume is thickest.

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