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Owing to the rain shadow of the coastal mountains, south-central Alaska does not get nearly as much rain as the southeast of Alaska, though it does get more snow with up to 300 inches (7.62 m) at Valdez and much more in the mountains. On average, Anchorage receives 16 inches (410 mm) of precipitation a year, with around 75 inches (1.91 m) of snow.
This map shows rainfall from Helene and in the days preceding the storm that combined to create disastrous flooding.
Average daytime summer temperatures range from approximately 55 to 78 °F (12.8 to 25.6 °C); [4] average daytime winter temperatures are about 5 to 30 °F (−15.0 to −1.1 °C). [4] Anchorage has a frost-free growing season that averages slightly over one hundred days.
South central Alaska does not get nearly as much rain as the southeast of Alaska, though it does get more snow. On average, Anchorage receives 16 inches (406 mm) of precipitation a year, with around 75 inches (1,905 mm) of snow. The northern coast of the Gulf of Alaska receives up to 150 inches (3,800 mm) of precipitation annually. [7]
Record-breaking rain that month led to a devastating flood. The rainiest Jan. 23 was in 1996 with 1.57 inches of rain. By contrast, the NWS recorded 0.45 inches of rain Tuesday , and 0 inches ...
Nov. 7—A major winter storm is forecast to bring snow, strong winds and rain to a large swath of Southcentral Alaska from Tuesday night into Thursday. Light snow was expected to begin in the ...
Rainfall rates downwind of cities are increased between 48% and 116%. Partly as a result of this warming, monthly rainfall is about 28% greater between 20 miles (32 km) to 40 miles (64 km) downwind of cities, compared with upwind. [66] Some cities show a total precipitation increase of 51%. [67]
A pair of storms pummeling the Pacific Northwest are expected to dump more rain in two days than some areas have seen the entire month so far, threatening avalanches in mountain areas and flooding ...