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 Pattern.

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 ...

The cloudy, rainy and cooler pattern Derby weekend can be explained in two words... omega block! Blocking patterns occurs when centers of high pressure and/or low pressure set up over a region in such ...

A stubborn mid-October heat wave across Texas has been fueled by a weather pattern that has trapped warm air from the Gulf Coast far northward into Canada in a setup more typical of midsummer than ...

GRAND RAPIDS, Mich. (WOOD — It has been a rainy start to May, with Grand Rapids already accumulating 1.22 inches. This week will kick off with more rain chances due to a blocking pattern across the ...

Add Yahoo as a preferred source to see more of our stories on Google. This map shows how temperatures across North America have compared to average since mid-September. Orange and red areas represent ...

Summer is synonymous with high pressure and heat domes, but do you know the three common types of blocking patterns that produce these heat waves in the Ozarks? Blocking patterns disrupt the normal ...

SIOUX FALLS, S.D. (KELO) — It has been a quiet day in KELOLAND with temperatures continuing to stay warm. Meteorologist Jaelyn Borresen has more details on the pattern bringing us this type of weather ...

It may only be Tuesday, but we can already say this week is pretty slow and sluggish (at least as far as the weather forecast is concerned). You can thank two rounds of a weather pattern known as a ...

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 letter ...