The sweeping pattern that's now influencing much of the USA's weather is called an omega block because of its resemblance to ...

A strange atmospheric pattern known as an "omega block" is preventing the usual eastward progression of weather across the ...

A common upper-air pattern seems to be coming a few weeks early. It could be the sign this particular weather pattern will be ...

Omega block weather pattern is forecast this weekend to flip temperatures, bring snow, storms across the country. Here's what ...

An "omega block" in the atmosphere will enhance the chances for stormy weather and big shifts in temperature over parts of ...

It is defined by a powerful high pressure area with an area of low pressure "underneath" or south of the high pressure.

An "Omega block" drawing chilly winds and fog from the North Sea threatens to cloak parts of Britain in a ghostly shroud of ...

"Intense" thunderstorms roll into Texas Friday. An omega block is likely to bring flooding risks and low temperatures over ...

While many Eastern, Southern and Western states have experienced adverse weather due to the omega block, conditions in the north-central U.S. have remained mild and clear due to the location of ...

The large-scale weather pattern that's now influencing much of the USA's weather – known as an omega block because of its resemblance to the Greek letter omega – isn't budging right now.

PORTLAND (WGME )--- Maine has been stuck with some very wet and cool weather. And it's all thanks to a pattern known as an ...