Sentences with phrase «abnormally high air pressure»

In contrast, the positive phase of the Southern Oscillation occurs during La Niña episodes, and refers to the situation when abnormally low air pressure covers Indonesia and the western tropical Pacific and abnormally high air pressure covers the eastern tropical Pacific.

Not exact matches

While western states baked in abnormally warm winter and spring conditions fueled by a stubborn ridge of high pressure over the region, bouts of Arctic air kept the eastern half of the country in a distinct chill.