The ‘blob’ is back — except this time it stretches across the entire North Pacific

A record-breaking and astonishingly expansive marine heat wave is underway in the Pacific Ocean, stretching from the water around Japan to the US West Coast. The abnormally warm “blob” of ocean water ...

Fall’s first freeze isn’t arriving on schedule for most of the US. Here’s why

The seasons are changing, but not as they normally do. Fall is getting warmer and that’s pushing back the date of the average first freeze and decreasing autumn snowfall for much of the United States.

Tropical Storm Gabrielle has run into an atmospheric road block, but it’s still forecast to strengthen

Tropical Storm Gabrielle has formed in the central Atlantic Ocean, putting an end to an unusual nearly three-week stretch with no storms during the peak of hurricane season.

No, Mount St. Helens isn’t erupting again. It’s just stirring up leftover ash 45 years after ‘the big one’

For a moment, it seemed like a blast from the past: a plume over Mount St. Helens on Tuesday looked like the volcano might be ...

When signs of winter typically arrive where you live and how they’re changing

Hand in hand with brilliant foliage, fall delivers the first signs of winter to much of the United States — but the seasons are changing, and not as they normally do.