Record-setting US astronaut Scott Kelly tweeted words of warning to Mexico—as well as two truly scary photos of Hurricane Patricia—from aboard the International Space Station Friday, WTVR reports. "Hurricane Patricia approaches Mexico," he writes in one tweet. "It's massive. Be careful!" "Hurricane Patricia looks menacing from Space Station," he says in another. "Stay safe below, Mexico." According to the Houston Chronicle, the Category 5 hurricane—the most powerful ever in the Western Hemisphere—was nearing Mexico's west coast Friday afternoon. Kelly is currently at the tail end of spending a year in space. (More Scott Kelly stories.)