国家气象局对阿拉斯加州多地发布四项冬季风暴观察：汤普森山口等地或降雪6至12英寸，惠蒂尔一带阵风可达70英里/时
美国国家气象局（NWS）阿拉斯加州各办公室 11 月 8 日发布四项冬季风暴观察（Winter Storm Watch）。气象局表示，一个强系统预计于周日晚间至周一移入该州部分地区，部分地点的风暴天气将持续至周二。
据气象局的观察通报，其中两项观察所列降雪最重区域包括汤普森山口（Thompson Pass）、海恩斯（Haines）、史凯威（Skagway）与白山口（White Pass）一带，或有 6 至 12 英寸的大雪。通报描述，周一上午先有一轮小到中雪，周一下午短暂减弱，周一晚间至周二上午再迎一轮较强降雪。
第三项观察覆盖通西纳（Tonsina）与 46 英里一带，预报降雪量为 3 至 12 英寸。第四项观察自周一上午生效至周二下午，覆盖惠蒂尔（Whittier）、穆斯帕斯（Moose Pass）、苏厄德（Seward）、格德伍德（Girdwood）、特纳根山口（Turnagain Pass）、波蒂奇（Portage）、霍普（Hope）、萨米特湖（Summit Lake）与切内加（Chenega）等地。
风力方面，气象局预计惠蒂尔与特纳根湾东侧一带的东风在周二下午减弱前，峰值可达约 60 至 70 英里/时。气象局的观察还提及部分地区有显著积冰的可能，强降雪、强风与积冰组合将使周日至周二的出行条件变得危险。冬季风暴观察为气象局在风暴达到警告标准前发布的预报产品，具体警报以该局后续公告为准。
National Weather Service Issues Four Winter Storm Watches Across Alaska: 6 to 12 Inches of Snow Possible at Thompson Pass; Gusts to 70 MPH Near Whittier
The National Weather Service offices in Alaska issued four Winter Storm Watches on November 8. The agency said a strong system is expected to move through parts of the state Sunday night into Monday, with storm conditions continuing in some areas into Tuesday.
Two of the watches describe the heaviest snow for the Thompson Pass, Haines, Skagway and White Pass areas, where between six and 12 inches of heavy snow is possible. The Weather Service described a band of light to moderate snow Monday morning, tapering off Monday afternoon, followed by a second, heavier round Monday evening through Tuesday morning.
A third watch forecasts between three and 12 inches of snow for the Tonsina and 46 Mile areas. A fourth watch, in effect from Monday morning through Tuesday afternoon, covers Whittier, Moose Pass, Seward, Girdwood, Turnagain Pass, Portage, Hope, Summit Lake and Chenega.
For wind, the Weather Service said easterly winds through Whittier and eastern Turnagain Arm may peak around 60 to 70 mph before diminishing Tuesday afternoon. The watches also cite the potential for significant ice accumulation in places, with the combination of heavy snow, powerful winds and ice creating dangerous conditions from Sunday through Tuesday. A Winter Storm Watch is issued in advance of possible warning-level conditions; specific warnings are carried in the agency's subsequent statements.
来源：美国国家气象局冬季风暴观察（经 Men's Journal 转述 NWS 阿拉斯加办公室通报） https://www.mensjournal.com/news/new-winter-storm-forecast-up-to-12-inches-of-snow-70-mph-winds-approach ；国家气象局天气预报中心冬季天气讨论（官方） http://www.wpc.ncep.noaa.gov/discussions/hpcdiscussions.php?disc=qpfhsd
来源：美国国家气象局
发布：GSM·美国（发布链接）
图片来源：图：汤普森山口附近的阿拉斯加输油管线。David Wipf 摄，CC BY 2.0，经 Wikimedia Commons。 / Photo: The Trans-Alaska Pipeline near Thompson Pass. Photo by David Wipf, CC BY 2.0, via Wikimedia Commons.
GSM Global · 本篇英文版 English edition of this story
