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 ...

Meteorologist Sven Sundgaard analyses the blocking pattern and a surge of warmth — perhaps near 90 degrees on Mother's Day — ...

The U.S. is experiencing an “omega block," which locks in unsettled conditions in some areas while others have extended dry ...

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

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

You have probably noticed that the first few days of May have been soggy for us across Mid-Michigan and there is a reason for ...

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

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 ...

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

An “omega block” weather pattern, so named for its resemblance to the Greek letter, is influencing conditions in Texas and ...

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.