Think your last flight into Denver felt extremely bumpy? Experts say that’s no coincidence – Denver International Airport tops the list of the most turbulent airports in the U.S., thanks to a perfect storm of mountainous terrain, unpredictable winds and wild weather patterns. As far as other top airports on the list like Bozeman, Albuquerque and Salt Lake City, pilots describe the descent like riding a mechanical bull.

A slow-moving system means rain could force those planning outdoor activities in the central and southern U.S. this holiday weekend to come up with a Plan B on one or more days.

Millions of beachgoers seeking sun and sand on Sunday will face the risk of rip currents. The highest risk will be for southeastern Florida, including Miami, Fort Lauderdale and West Palm beaches. A moderate risk will extend up much of the Southeast Coast, from Florida to North Carolina, including the Outer Banks. There’s also a moderate risk of rip currents for a large chunk of the Florida Panhandle. Make sure you swim near a lifeguard and pay attention to the beach warning flags. Always know what to do if caught in a rip current. Watch the video to see where the greatest risks are.

Astronaut Anne McClain had the best seat in the house to watch thunderstorms blink across the southern skies recently. She said that some of the lightning flashes were as large as cities. These thunderstorms produced numerous tornadoes from the Ohio Valley into the Southeast.

We are approaching the peak time to see the Milky Way lighting up the night sky, but knowing the right conditions for viewing and where to look are key. Watch this video to see how to spot it during the coming weeks.