A storm could be-fall us. Colorful leaves and cooler temperatures aren’t the only thing autumn is potentially bringing. Meteorologists predict that Earth could be blasted by a geomagnetic storm on Wednesday due to its timing with the autumnal equinox. A coronal mass ejection (CME) — when plasma and magnetic particles burst forth from the sun’s surface — occurred on Sunday, the same day as the official start of fall, Space.com reported. It reportedly occurred when a sunspot called AR3835 unexpectedly spouted an M-class solar flare — something scientists hadn’t predicted as said sunspot had appeared stable.