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From: Dan Richter (1:317/3)
To: All
Date: Mon, 12.04.21 13:00
ES Picture of the Day 12 2021
EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes
and phenomena which shape our planet and our lives. EPOD will collect and
archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.

Backyard Avalanche

April 12, 2021

Pre-Avalanche (1)

Photographer: George Seielstad
Summary Authors: George Seielstad; Jim Foster
Seldom does an avalanche occur on your outside deck, but conditions
in February of 2021 created one at my home in western Montana. A snowy
start to the month was followed by continuously cold weather through
mid-February when only on one day did the thermometer reach freezing
(32 F or 0 C).

Shown above is a glass-topped table with rounded edges having a slight
tilt. After snow piled up on the table, a meltwater lens allowed the
load to gradually slide slowly off the downhill edge. Notice how
the curved edge is rounded on the underside of the table. This
demonstrates snow's substantial tensile strength. Photos taken on
February 19, 2021.
* Missoula, Montana Coordinates: 46.872, -113.9940

Related EPODs

Backyard Avalanche Frost Pattern on Cold Window Snowflakes
and Symmetry Cracks in the Ice on Utah Lake Archive - A Day at
the Beach Archive - Ice Coring on Lake Placid

Cryosphere Links

* Guide to Frost
* What is the Cryosphere?
* Bentley Snow Crystals
* Glaciers of the World
* Ice, Snow, and Glaciers: The Water Cycle
* The National Snow and Ice Data Center Google Earth Images
* Snow and Ice Crystals

Earth Science Picture of the Day is a service of the Universities
Space Research Association.

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