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.

Omega blocks can persist for several days to over a week, leading to prolonged periods of unusual weather, whether that means heat, dryness, or storms, depending on the location within the pattern.

Depending on the location of the Omega block, Michigan can be under the influence of the high-pressure system that would bring sunshine, quiet, and warm weather.

DAYTON, Ohio (WDTN) — The Miami Valley has seen a stalled low pressure over the area for several days, leading to on-and-off showers. It’s all thanks to something known as an Omega Blocking ...

The current weather set up resembles that Omega symbol with an area of high pressure stuck between two areas of low pressure. The jet stream, as it navigates its way between the highs and lows ...

Blocking patterns can remain in place for several days, resulting in long spans of persistent weather for locations under the block. Let's go through 3 different types of blocks that can often ...

Omega blocks are most common during the spring and fall transition seasons. While the name may sound a bit technical, the result is something we all understand—a weather pattern that requires a ...

A strong, slow-moving system was disrupting weather across the U.S., bringing unusually cool and wet conditions into Arizona. An omega block had settled over much of the country.

Drizzly days bring relatively low rainfall to Maine, despite ‘omega block’ Between Sunday and Tuesday evening, less than 2 inches of rain fell over most of the state, though parts of southern ...

OMAHA, Neb. — Omega block means great weather in Omaha! Sunday was one of the top ten days of the year to get outside. Monday could be one as well!