Weather Alert in Idaho
Avalanche Watch issued February 16 at 6:24AM MST by NWS Pocatello ID
AREAS AFFECTED: Bear River Range
DESCRIPTION: AVAPIH * WHAT...Avalanche watch. Heavy snowfall and strong winds are expected to rapidly increase avalanche danger across northern Utah and southeast Idaho beginning Tuesday and continuing throughout the week. Expect dangerous and complex avalanche conditions to develop on many slopes, with large and natural and human- triggered avalanches likely. * WHERE...The Bear River Range and Wasatch Mountains. * WHEN...6 AM MST Monday through 6 AM MST Tuesday * IMPACTS...Dangerous avalanche conditions are expected to develop on many slopes. Avalanches can be triggered on slopes steeper than 30 degrees. They may also be triggered remotely from a distance or from below.
INSTRUCTION: Avoid traveling on or underneath steep terrain at mid and upper elevations in the backcountry. Carry and know how to use avalanche rescue equipment, including a transceiver, shovel and probe. Find safer riding conditions on slopes less than 30 degrees with no overhead hazard. Consult www.utahavalanchecenter.org or www.avalanche.org for more detailed information. Similar avalanche danger may exist at locations outside the coverage area of this or any avalanche center.
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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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