Fall 2013 Thread — Northern Hemisphere (totals, Denver, snowing, hot)

[Mac15]

It doesn't snow when the dew point is above 0c.

I know because I have had as low as 0.3c and rain before.

[Mac15]

If you look in the video you can see alot of white just above here; well that is snow.


Weather - YouTube

That is what I would expect with a dew point of 3c. You can kind of see a bit above my house that it is snowing. The temperature that day was 1c.

[MeteoMan]

Another blurry video showing sweet FA. Let's face it you wish you lived somewhere 300+m above sea level where we actually get snow... and not "On a hill be hind the house".

[Full Overcast]

Originally Posted by Mac15

If you look in the video you can see alot of white just above here; well that is snow.


Weather - YouTube

That is what I would expect with a dew point of 3c. You can kind of see a bit above my house that it is snowing. The temperature that day was 1c.

Did you record that with an expired parsnip?

[Patricius Maximus]

Originally Posted by nei

I wonder if altitude has an effect?

I don't doubt the reports, but if the >0C dew point is just in a shallow layer of air close to the surface the snow falling could make it through . In Philadelphia last March it snowed for about 30 minutes when the dew point was 33F. So, it appears that a dew point >0C normally precludes snow, but it can snow at that dew point under certain rare conditions. I've also seen it rain lightly when the dew point was as low as 30F.

[chicagogeorge]

Mid September snow at 60N

[Mac15]

Originally Posted by Patricius Maximus

I don't doubt the reports, but if the >0C dew point is just in a shallow layer of air close to the surface the snow falling could make it through . In Philadelphia last March it snowed for about 30 minutes when the dew point was 33F. So, it appears that a dew point >0C normally precludes snow, but it can snow at that dew point under certain rare conditions. I've also seen it rain lightly when the dew point was as low as 30F.

Well I have never seen it snow with a dew point above 0c.

[Cambium]

Originally Posted by Mac15

The dew point is 3c though so thats impossible

Originally Posted by Mac15

It doesn't snow when the dew point is above 0c.

Originally Posted by Mac15

Well I have never seen it snow with a dew point above 0c.

So are you done learning or are you trying to teach us something?

[Dean York]

I had 8 feet of snow when the dew point was 4C.

That's Owens theory out of the window.

[dunno what to put here]

Originally Posted by Mac15

It doesn't snow when the dew point is above 0c.

I know because I have had as low as 0.3c and rain before.

And I've had temps below freezing before with rain. And? It certainly does snow at dew points above freezing, but it won't settle. I recall a snow event in early April 2012 - it was snowing heavily but the dew was above freezing so it didn't settle. When it fell below freezing, it began to settle.