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RE: OT - how cold is it .... - 1/7/2018 8:19:33 PM   
Zorch

 

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quote:

ORIGINAL: wegman58

quote:

ORIGINAL: Colonel Mustard

Made it to 23 (above)up here in Albany today. I think back to zero tonight, and that will be our high on Saturday. Still hitting negatives at night.


Not bad. I remember one year in the late 1970's where it went below zero (F, not C) every day in February. Different year, it never BROKE freezing (from below) in February.

I was living in Troy (right across the river) at the time.

That was the winter of 76-77. The Delaware river froze over.

(in reply to wegman58)
Post #: 31
RE: OT - how cold is it .... - 1/8/2018 2:05:42 PM   
rustysi


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quote:

That was the winter of 76-77.


Spent that one in Korea. Next year though, while in Massachusetts, they set a record for continuous snow cover. Don't know if that still stands.

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(in reply to Zorch)
Post #: 32
RE: OT - how cold is it .... - 1/10/2018 12:17:55 AM   
wegman58

 

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From: Edina, MN (FROM the Bronx)
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quote:

ORIGINAL: Zorch


quote:

ORIGINAL: wegman58

quote:

ORIGINAL: Colonel Mustard

Made it to 23 (above)up here in Albany today. I think back to zero tonight, and that will be our high on Saturday. Still hitting negatives at night.


Not bad. I remember one year in the late 1970's where it went below zero (F, not C) every day in February. Different year, it never BROKE freezing (from below) in February.

I was living in Troy (right across the river) at the time.

That was the winter of 76-77. The Delaware river froze over.


BRUTAL winter - my freshman year in college. The folks from Buffalo came home with pictures (REAL pictures - with that F I L M stuff) of houses with snow drifts up to the eaves.

(in reply to Zorch)
Post #: 33
RE: OT - how cold is it .... - 1/11/2018 5:54:37 PM   
pontiouspilot


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Well for all the wussies on here....minus 40 degrees plus 10 degrees of wind chill this morning. It's so cold the moose are falling outa the trees! In northern Alberta it's business as usual.

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Post #: 34
RE: OT - how cold is it .... - 1/12/2018 4:02:05 AM   
Shark7


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quote:

ORIGINAL: JeffroK

And we are expecting close to 110degF (43degC) for Saturday.

Want to swap.


I'm used to that. It's these single digit temps we're having I can live without. I'll take that 110F any day.

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Post #: 35
RE: OT - how cold is it .... - 1/12/2018 1:54:49 PM   
Lecivius


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.




Attachment (1)

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Post #: 36
RE: OT - how cold is it .... - 1/13/2018 3:21:26 AM   
wdolson

 

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From: Near Portland, OR
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quote:

ORIGINAL: JeffroK

from Wiki

A skate can glide over ice because there is a layer of ice molecules at the surface that are not as tightly bound as the molecules of the mass of ice beneath. These molecules are in a semiliquid state, providing lubrication. The molecules in this "quasi-fluid" or "water-like" layer are less mobile than liquid water, but are much more mobile than the molecules deeper in the ice. At about −250 °F (−157 °C) the slippery layer is one molecule thick; as the temperature increases the slippery layer becomes thicker.

It had long been believed that ice is slippery because the pressure of an object in contact with it causes a thin layer to melt. The hypothesis was that the blade of an ice skate, exerting pressure on the ice, melts a thin layer, providing lubrication between the ice and the blade. This explanation, called "pressure melting", originated in the 19th century. This, however, did not account for skating on ice temperatures lower than −3.5 °C, whereas skaters often skate on lower-temperature ice. In the 20th century, an alternative explanation, called "friction heating", was proposed, whereby friction of the material was causing the ice layer melting. However, this theory also failed to explain skating at low temperature. In fact, neither explanation explained why ice is slippery when standing still even at below-zero temperatures.





Another thing is water has one of the highest surface tensions of any liquid which would work against these theories.

Bill

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Post #: 37
RE: OT - how cold is it .... - 1/13/2018 3:26:08 AM   
wdolson

 

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Back in 2004 we had an extremely cold snowstorm (our first winter in the Portland area). We had a couple of inches of snow followed by an inch of freezing rain, followed by another freeze. When the weather finally cleared enough to get out I ran into a woman in the post office who remembered an even worse storm when she was a kid in the 1930s. The Columbia River froze over and she remembers driving across the river in a Model A.

The river is up to 2 miles across, that's pretty impressive.

Bill

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(in reply to Lecivius)
Post #: 38
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