In patients undergoing transcatheter aortic valve replacement (TAVR), high‑grade atrioventricular blocks occurring during and after the procedure had distinct mechanisms and predictors. Both ...

Ever wondered how leopards wear perfect dots or zebra's stripes? Scientists now know that patterns are not random at all. They are guided by nature’s chemistry, mathematics and tiny skin cells. These ...

The U.S. is experiencing an “omega block," which locks in unsettled conditions in some areas while others have extended dry and warm conditions. Trump pulls surgeon general nominee Janette Nesheiwat ...

The start of what is, on average, San Antonio’s wettest month of the year brought lackluster rainfall totals, despite a promising forecast last week. However, the next few days are shaping up to be ...

FAYETTEVILLE, Ark. (KNWA/KFTA)— 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 ...

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 ...

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 ...

A common upper-air pattern seems to be coming a few weeks early. It could be the sign this particular weather pattern will be worked off by the end of May. Right now we have what we meteorologists ...

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? If ...

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 ...