A not-so-typical weather pattern is happening right now above our heads. It's called an Omega Block Pattern because the upper-level jet stream resembles the Greek letter Omega (Ω).

This pattern typically results in ongoing chances for clouds and rain on the East and West Coast while the central part of the country remains dry and quiet thanks to high pressure.

An omega block pattern will bring threats of flooding rain to the Plains and Northeast, and some weird temperature maps across the country during the first full week of May. What Is An Omega Block ...

The sweeping pattern that's now influencing much of the USA's weather is called an omega block because of its resemblance to the Greek letter.

The current pattern has the high pressure area of the omega block over the Upper Mississippi Valley, including Western Wisconsin. The two low pressures are to our southeast and well to our southwest.

Discover how Ohio's omega block impacts weather with slow-moving low pressure, rain, and cooler temperatures until the pattern breaks through next week.

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