Sentences with phrase «heavy atmospheric river»
It wasn't one or two particularly heavy atmospheric river storms that pulled California out of a drought, increased snowpack and caused flooding.
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That is because atmospheric rivers (see sidebar) often produce heavy, cold season precipitation and flooding when they hit the west coast of North America.
Why It Matters: On average, atmospheric rivers hit the western United States only a few times each winter, but they transport significant amounts of moisture that converges in the mountains producing heavy precipitation.
A relentless series of storms — driven by persistent troughing and an associated active jet stream along the West Coast — brought numerous atmospheric rivers and associated heavy precipitation to much of the state since November.
On January 3 and 4, the first of two back - to - back atmospheric river storms brought heavy rain, mountain snow, and localized flooding to central California.
On January 3 and 4, the first of two back - to - back atmospheric river storms (wide paths of moisture in the atmosphere composed of condensed water vapor), brought heavy rain and mountain snow to central California, ahead of an even more intense round of heavy precipitation brought by a powerful, long - duration atmospheric river storm pulling warm and moist air to California from the subtropical and equatorial region southeast of Hawaii.
The second atmospheric river storm hit late on January 7, causing a prolonged period of heavy rainfall.
Called «atmospheric rivers», such features are relatively common in the North Pacific in the fall and winter, routinely bringing heavy rains and snow to the Pacific Northwest and California.