Weather Alert in Washington
Winter Weather Advisory issued February 16 at 8:50AM PST until February 17 at 12:00PM PST by NWS Seattle WA
AREAS AFFECTED: Willapa and Black Hills; Southern Hood Canal; Lake Crescent Area Including US 101; Foothills of the Western and Southern Olympic Peninsula; Lower Chehalis River Valley
DESCRIPTION: * WHAT...Snow showers expected. Total snow accumulations of 1 to 3 inches. * WHERE...Foothills of the Western and Southern Olympic Peninsula, Lake Crescent Area Including US 101, Lower Chehalis River Valley, Southern Hood Canal, and Willapa and Black Hills. * WHEN...Until noon PST Tuesday. The snow potential will gradually shift southward from the northern Olympic Peninsula today south toward Grays Harbor and the Hood Canal tonight. * IMPACTS...Roads, and especially bridges and overpasses, may become slick and hazardous. Plan on wintry road conditions. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. * ADDITIONAL DETAILS...As of 845 am, snow was being observed along U.S. Highway 101 west of Lake Crescent. Precipitation will come in the form of hit and miss showers while temperatures generally hover in the low to mid 30s. However, quick accumulations will be possible in heavy showers creating rapidly deteriorating road conditions.
INSTRUCTION: Slow down and use caution while traveling. Prepare for possible power outages. Be prepared for wintry road conditions. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury.
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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
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