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

Dr. Alan Black from SIUE explains how blocking patterns in weather can lead to multiple days of rain or extended dry spells.

Atmospheric rivers are more typical in the West, but this one may bring flooding rainfall and severe storms to the Southeast, ...

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 — ...

Thanks to the current Omega block, the Mississippi Coast will see scattered showers and thunderstorms Thursday, May 8, ...

If you have been keeping an eye on weather forecasts recently, you may have heard meteorologists mention something called an ...

The forecast for May is pointing to a rapid warm up with rains across the drought-stricken Plains, but there's a drier forecast for the heart of the Corn Belt. One meteorologist is concerned about the ...