SEATTLE —Autumn leaves changing color is a signal for changing weather ahead, and the National Oceanic and Atmospheric Administration’s Climate Prediction Center forecasts a71% chance for a weak La Niñato develop, which could bring more precipitation than normal for October, November, and December.
La Niñais a weather pattern that occurs when strong trade winds push warmer water on the surface of the ocean from the west coast of South America to Indonesia.
As the warm ocean water shifts west, cold water deeper in the ocean rises to the surface around the South American coast. This pushes the jet stream north and impacts the weather in the Pacific Northwest.
The Pacific Northwest has equal chances of above- or below-normal temperatures between October and December.
There is a 33 to 40 percent chance of above-normal precipitation through the end of the year, according to the National Oceanic and Atmospheric Administration (NOAA).
This includes rain in the lowlands and snow in the mountains.
“Hopefully, we get more rain. I like the rain, it’s refreshing,” Dan Rodriguez, who lives in Issaquah, said.
The most recentdrought mapfrom NOAA shows a severe drought in much of our area, and extreme drought conditions in the north-central Cascades.
NOAA’s January, February, and March outlook shows La Niña is still favored.
Below normal temperatures are expected in the Pacific Northwest. There is an equal chance of above-or below-normal precipitation chances in the region.
트위터 공유: 워싱턴 서부 올해 가을 폭우 예상 71% 확률