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.

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.

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 ...

The next week the Youngstown area can expect temperate and dry weather. This is all thanks to a weather pattern known as the Omega block.

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 ...