Weather Alert in Idaho
Avalanche Warning issued March 12 at 7:03AM PDT by NWS Spokane WA
AREAS AFFECTED: Bonner, ID; Boundary, ID; Shoshone, ID
DESCRIPTION: AVWOTX BACKCOUNTRY AVALANCHE WARNING IMMEDIATE BROADCAST REQUESTED 07:00 PDT Thu Mar 12 2026 The Idaho Panhandle Avalanche Center in Sandpoint has issued a BACKCOUNTRY AVALANCHE WARNING for the following areas: NWS Missoula MT - MTZ001 (MTZ001) NWS Spokane WA - ID 017 (Bonner County)... ID 021 (Boundary County)...ID 079 (Shoshone County) * WHAT...An Avalanche Warning is in effect from Thursday 7 AM PST to Friday 7 AM PST. Very dangerous avalanche conditions have developed from heavy snowfall and strong to extreme winds and will last through Friday. You can very easily trigger avalanches large enough to bury or kill you, and some will release spontaneously. Avoid travel in avalanche terrain during this period. * WHERE...The West Cabinet Mountains, the East Cabinet Mountains, and the Bitterroot Mountains - Silver Valley above 4,000 feet. * WHEN...In effect from Thu 07:00 PDT to Fri 07:00 PDT. * IMPACTS...An atmospheric river and violent jet stream have joined forces to deliver heavy snowfall and strong to extreme winds. Snowfall is being measured in multiple feet at higher elevations, and the new snow has formed dangerous slabs of snow and will likely cause a widespread cycle of natural avalanches large enough to bury, injure, or kill a person. It will be very easy for backcountry travelers to trigger them during this period. * PRECAUTIONARY / PREPAREDNESS ACTIONS...Travel in and around avalanche terrain is not recommended during this period. Consult http://www.idahopanhandleavalanche.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 Cumulus Clouds?
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Cumulus clouds are fluffy and textured with rounded tops, and
may have flat bottoms. The border of a cumulus cloud
is clearly defined, and can have the appearance of cotton or cauliflower.
Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall,
becoming cumulus congestus and possibly the even taller cumulonimbus clouds.
When cumulus clouds become taller, they have a greater chance of producing precipitation.
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Weather Topic: What is Evaporation?
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Evaporation is the process which returns water from the earth
back to the atmosphere, and is another crucial process in the water cycle.
Evaporation is the transformation of liquid into gas, and it happens because
molecules are excited by the application of energy and turn into vapor.
In order for water to evaporate it has to be on the surface of a body of water.
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