Let It
|
A "Blanket" of Snow?
YES! Snow is a great insulator! The air
trapped between the individual flakes makes a natural barrier to
block heat transfer. Igloos constructed from snow blocks are
actually cozy when heated on the inside. Ten inches of fresh snow
with a density of 0.07 inches, seven percent water, is
approximately equal to a six-inch-layer of fiberglass insulation
with an insulation R-value of R-18.
"Thundersnow"?
If you've never experienced this
phenomenon, you've missed a really neat event! Growing up in
Buffalo, NY, Cheryl's seen it frequently. Strong low pressure
systems with rapid upward development will produce lightning and
heavy snow together. Snow may fall at the rate of up to 5"
per hour!
Not too warm... Not too cold...
but "Just Right"
Many people believe that the temperature
needs to be at or below freezing for it to snow - not so!
Although the snow may melt when it hits the surface, snow may be
seen falling from clouds when the temperature is as high as 35 or
36 degrees Fahrenheit. As for the idea that "it's too cold
to snow" - not necessarily! As long as a weather system can
find a source of moisture, snow is possible even in very cold
temperatures. Often, though, these cold temperatures rob the air
of the moisture source needed to produce precipitation.
A word about Jack Frost ...
The mythical Jack shows up
in many Western cultures, and is credited with leaving beautiful
artworks on windowpanes and autumn leaves as the year nears the
end. In Norse mythology, he's known as "Jokul" (icicle)
or "Frosti" (Frost) - hence, "Jokul Frosti"
or Jack (Jock) Frost. Russian folklore personifies the same
character as "Father Frost", a smith who binds earth
and water together in chains. German folklore adds a different
twist with the tradition of an old woman who causes snow to fall
by shaking out her featherbed!
Average December Snowfall (in inches) for Some US Cities
Kodiak, Alaska | 13.6" |
Flagstaff, Arizona | 15.9" |
Chicago, Illinois | 8.3" |
Des Moines, Iowa | 6.7" |
St. Louis, Missouri | 3.8" |
Buffalo, New York | 23.2" |
Nashville, Tennessee | 1.4" |
Seattle, Washington (Sea-Tac) | 2.4" |
Green Bay, Wisconsin | 10.8" |
Lubbock, Texas | 1.8" |
Burlington, Vermont | 18.4" |
Richmond, Virginia | 2.0" |
Erie, Pennsylvania | 22.7" |
Don't see your city? Visit the National Climatic Data Center for an extensive list.
A Myth Exploded!
Based on National Weather Service records
for 1961 through 1990, Rochester, New York averages 94 inches of
snow annually and is the snowiest large city in the United
States. Its annual municipal snow-removal budget in 1995 was $3.7
million. Contrary to popular belief, Buffalo, New York, is only a
close runner-up. A 39-inch snowfall in 24 hours in early December
1995 cost the city nearly $5 million for snow removal!
Open another present or go back home
"Let It Snow!"