Winter Storm Warning: Up to 20 Inches of Snow Expected Above 6,000 Feet in California's Sierra Nevada
In a forecast discussion issued at 10:04 p.m. PST on November 13, the National Weather Service office in Hanford, California, said a Winter Storm Warning remains in effect for the Sierra Nevada through 4 a.m. Tuesday (November 17), with total snowfall of up to 20 inches expected above 6,000 feet and difficult mountain travel.
The current system has already delivered significant precipitation: up to 0.5 inch of rain in parts of the San Joaquin Valley, 0.50 to 1.50 inches in the Sierra and foothills, and gusts near 50 mph in the mountains and desert. A Wind Advisory runs until 7 a.m. Saturday, and a Lake Wind Advisory until 10 a.m. Saturday.
More systems are on the way. The next arrives Sunday night into Monday, and another follows Wednesday into Thursday, when snow levels may drop to about 5,000 feet by Thursday morning, with the Grapevine and Tehachapi passes among the areas to watch.
For Sunday night into Monday, the probability of at least 0.50 inch of rain in the valley is 30 to 40 percent, and of at least 1 inch in the Sierra 40 to 50 percent, rising to 70 to 80 percent around Madera and Mariposa. The Climate Prediction Center's 6-to-10-day outlook also gives the region a 40 to 50 percent chance of above-average precipitation.
The Weather Service advises drivers heading into the mountains to carry tire chains, allow extra time, and check the latest road conditions and forecast updates before setting out.
(Source: National Weather Service)
Source: National Weather Service
Published by GSM · USA (original Chinese edition)
Photo: 图片来源：Wikimedia Commons，Shaggywoody 摄「CA Highway 4 at Bear Valley Jan. 23, 2010」（公共领域），图中为加州 Sierra Nevada 山区 Bear Valley 一带风暴过后的雪景（原图底部时间戳已裁去） Image: Wikimedia Commons, "CA Highway 4 at Bear Valley Jan. 23, 2010" by Shaggywoody (public domain), showing snow near Bear Valley in California's Sierra Nevada after a January storm (timestamp at bottom cropped)
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