Weather Alert in Alaska
Winter Storm Watch issued March 2 at 8:57AM AKST until March 4 at 3:00AM AKST by NWS Juneau AK
AREAS AFFECTED: City and Borough of Sitka; Western Kupreanof and Kuiu Island
DESCRIPTION: ...MULTIPLE ROUNDS OF SNOWFALL EXPECTED THROUGH EARLY WEEK... Snow continues for the central inner channels from Wrangell and Kake northward though rates are starting to diminish. Expect the snow to continue to diminish through the day as the system moves off to the east. Another system will bring more accumulating snow to the panhandle Monday night into Tuesday night. The track of this follow up feature could lead to significant swings in snow accumulations from Frederick Sound northward to the Icy Strait corridor. * WHAT...Heavy snow possible. Total snow accumulations of 4 to 12 inches possible. Winds could gust as high as 35 mph. * WHERE...City and Borough of Sitka and Western Kupreanof Island and Kuiu Island. * WHEN...For the Winter Weather Advisory, until 9 AM AKST Monday. For the Winter Storm Watch, from late Monday night through late Tuesday night. * IMPACTS...Travel could be very difficult and is discouraged. The hazardous conditions could impact the morning or evening commute.
INSTRUCTION: Monitor the latest forecasts for updates on this situation.
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Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
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