Weather Alert in Alaska
Winter Weather Advisory issued February 24 at 2:07PM AKST until February 26 at 6:00AM AKST by NWS Juneau AK
AREAS AFFECTED: City and Borough of Juneau
DESCRIPTION: ...PERIODS OF SNOW THROUGH MID WEEK... .Light snow continuing in various inland areas this afternoon with around 2 to 4 inches already accumulated in Juneau and Petersburg. There should be a brief break in the snow tonight before more snow showers move in from the West Wednesday into Wednesday night. Snow accumulations will be highly variable Wednesday into Wednesday night with W to SW oriented slopes favored for higher snow totals. * WHAT...Snow. Additional snow accumulations of 4 to 10 inches. * WHERE...City and Borough of Juneau. * WHEN...Until 6 AM AKST Thursday. * IMPACTS...Travel could be very difficult and is discouraged. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Snow Tuesday afternoon and evening is expected to diminish Tuesday night, but will ramp back up Wednesday morning into Wednesday night. Snow accumulations will be highly variable with localized locations having a chance of seeing accumulations a few inches higher or lower then the above range.
INSTRUCTION: Slow down and use caution while traveling. People are urged to prepare their property before the onset of winter weather. For the latest road conditions, where available, call 5 1 1 or visit 511.alaska.gov.
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
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