A blocking pattern will make for slow-moving weather this week. From a flood threat to upside down temperatures: here’s what we’re watching.

Add Yahoo as a preferred source to see more of our stories on Google. FAYETTEVILLE, Ark. (KNWA/KFTA)— A not-so-typical weather pattern is happening right now above our heads. It’s called an Omega ...

An Omega High is a blocking pattern combined of two cutoff lows with a high squeezed between them. The size of the pattern can make the weather system stick around.

This pattern disrupts typical west-to-east jet stream flow, causing stagnant weather conditions, including cool, showery weather in the East and West, and mild, clear conditions in the north-central U ...