A strange atmospheric pattern known as an "omega block" is preventing the usual eastward progression of weather across the U.S. — but what is this weird block, and when will it go away?

It’s about to rain for days in eastern states because of an unusual atmospheric phenomenon known as an omega block.

If you have been keeping an eye on weather forecasts recently, you may have heard meteorologists mention something called an “omega block”. A couple of days ago, weather models picked up on one over ...

However, it's not all bad news, as weather experts predict that the record-breaking sunshine could continue for most of the ...

Your current weather may be around awhile. 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 ...

The great weather we're currently enjoying is down to a a blocking area of high pressure sitting just to the north of Ireland ...

Due to the extensive tornado, hail, and wind damage across the central and eastern United States, global insurance and ...

But now that we’re into May, an Omega Block is causing that pattern to shift, and that could bring good news for the drought-stricken Plains. It could also propel planting progress. Michael ...

Warm weather set to give way to more unsettled conditions - but forecasters predict warm summer ahead in Ireland ...

An Omega block with stabilize conditions in Calgary. Jodi Hughes has a look at the five-day forecast from the Sky Watch Weather Centre.