Today’s the Friday before a three-day weekend, and just about everyone is checked-out until the day after Memorial Day. Since it’s just you and me around these parts, how about we get our nerd on while nobody’s looking? By popular request, here’s an explainer on how to analyze instability a SKEW-T chart by hand.

With temperatures as low as 15°F, it seems unusual that parts of the south saw sleet and freezing rain instead of snow on Monday. Wintry precipitation isn't always determined by the temperature at the ground. Here's an explainer on how sleet and freezing rain can turn a beautiful snowfall into an icy death match.

There's a lot of talk about a potentially major tornado outbreak across parts of the Plains states this weekend, with tornadoes possible from Texas to Nebraska on both Saturday and Sunday. There's a good chance that the hype is just that — hype. But there is also a chance that the hype is warranted.