科罗拉多出现极端天气：周一烤焦，周二下雪？

科罗拉多的秋日迎来极端天气，周一还酷暑难耐，雾霾弥漫，到了周二早上，气温骤降了50多华氏度，居然开始下雪了。 "我们在一天之内就从夏天切换到了冬天，" 博尔德国家气象局高级预报员David Barjenbruch说。

在他的办公室外，周二早上，已经有一英寸左右的积雪。这是预计为期一天的暴风雪的开始，山麓和山区将下降超过12英寸，在丹佛周围下降3到6英寸。

风暴在本周内向北部和西北部撤退后，气温是否会回升，重归炎热、大风和干燥还有待观察。预计到周四丹佛的天空将放晴，周末气温将回升到比较适宜的温度。

On Monday, the region around Denver was sweltering in summer heat, the scorched skies thick with haze. By Tuesday morning, there was snow on the ground, and temperatures had plunged more than 50 degrees Fahrenheit.

“We switched from summer to winter in a day,” said David Barjenbruch, a senior forecaster at the National Weather Service in Boulder.

Outside his office, an inch or so of snow was already sticking to hillsides and tree branches on Tuesday morning, the start of what was expected to be a daylong snowstorm, dropping more than 12 inches in the foothills and mountains and three to six inches around Denver.

It remains to be seen whether conditions will bounce back to hot, windy and dry after the storm retreats to the north and northwest during the week. Skies are expected to clear in Denver by Thursday, with temperatures climbing back into the more seasonable 70s and 80s for the weekend.  source

指尖新闻：高信噪比，一目了然

新冠疫情追踪