An Omega block is a stagnant weather pattern named for its resemblance to the Greek letter Ω.

Millions of Americans are bracing for a wave of stagnant weather this week with the potential for soaring temperatures and ...

What’s happening: An Omega block pattern is forming, trapping weather systems and triggering extended severe weather threats across multiple US regions. Where and when: Storm risks span from Texas to ...

Add Yahoo as a preferred source to see more of our stories on Google. FAYETTEVILLE, Ark. (KNWA/KFTA)— A not-so-typical weather pattern is happening right now above our heads. It’s called an Omega ...