Weather Alert in Montana
Avalanche Warning issued February 24 at 5:21AM MST by NWS Billings MT
AREAS AFFECTED: Absaroka/Beartooth Mountains
DESCRIPTION: AVWBYZ The following message is transmitted at the request of the Gallatin National Forest Avalanche Center. The Gallatin NF Avalanche Center in Bozeman has issued a BACKCOUNTRY AVALANCHE WARNING for the following areas: NWS Billings MT - MTZ067 (MTZ067) * WHAT...The Gallatin National Forest Avalanche Center has issued an AVALANCHE WARNING for the Cooke City area. Heavy snowfall and strong winds are rapidly loading weak layers in the snowpack, creating very dangerous avalanche conditions. Human-triggered and natural avalanches are likely. Avoid travel on and underneath slopes steeper than 30 degrees. The avalanche danger is HIGH on all slopes. * WHERE...The mountains in and around Cooke City. * WHEN...In effect from Tue 05:00 MST to Wed 05:00 MST. * IMPACTS...Heavy snowfall and strong winds are creating unstable conditions over wide areas. * PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche conditions. Backcountry travelers should stay off and out from under slopes steeper than 30 degrees. Avalanches can be triggered from flat terrain above, below, and to the side of steep slopes. Avalanches will run into lower-angled terrain. Consult http://www.mtavalanche.com 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.
INSTRUCTION: N/A
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Weather Topic: What is Precipitation?
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Precipitation can refer to many different forms of water that
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Weather Topic: What are Shelf Clouds?
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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.
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