What Makes Air Unstable?

Tools

By By Steve Pool

SEATTLE - Don't you love those days where it'll be sunny for 20 minutes, then you scramble for your umbrella as it pours?

Usually in the days following a good-sized storm, we get a rush of colder air moving into the upper levels of the atmosphere. That makes it easier for clouds and storms to form because when pockets of warm air rise from the ground, it'll keep rising farther since it will stay warmer longer relative to the surrounding cold air.

If the air is really unstable (read: really cold air moving in), it can create storm cells with heavy rain with frequent lightning and/or hail. These storms tend to form in the afternoon and evening after the sunshine has had a chance to warm the ground and get the process started.

Your Photos

YouNews Hawkcited! Hawkcited!
Ten days ago, Douglas Walthers and Sheila Shannon put their creative heads together and wrote a bouncy new song for Seahawks fan "Hawkcited" - which was based on Doug asking Sheila about the Superbowl and saying "So, are you 'Hawk-cited?" Within ten days, not only was a song written and produced with the help of world class Bear Creek Recording Studio, but then Jerry Streeter at Blue Stellar Productions jumped in - and a music video was created! The story of how this video came to be is just another story of how devoted Seattle Seahawk Fans are to their team!
YouNews Seahawks Moon Seahawks Moon
The Seahawks moon is out tonight in the state of Washington. Go Hawks in your pursuit of a back to back super bowl win this weekend.