Why is it colder when it's wet?

13 years 3 weeks ago - 13 years 3 weeks ago #38358 by jennyjohn52
Do we have any amateur weathermen (or weather-persons to be correct) on the site that can answer a simple weather question.

Why is it colder - or at least why does it SEEM colder - at say 45 degrees and raining than at 10 below but dry. I spent years in Colorado at almost 9000' elevation and the temperatures were often way below zero for weeks at a time in the winter.

Now I'm in Southern California at 3500' with temperatures in the 40s and 50s but a lot of rain this winter and I feel like I can't get warm, no matter what I do.


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13 years 3 weeks ago #38365 by Scotty
Wind gets cooled by the water.

When the last candle has been blown out
and the last glass of champagne has been drunk
All that you are left with are the memories and the images-David Cooke.

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13 years 3 weeks ago #38368 by Baydream
When moisture is falling it is pulling the cold air from the upper atmosphere down with the pressure that the drops are falling down at so the heavier the rain the more cold air that will be brought down with it

Therefore the rain (which may start as snow in the clouds) will be colder than the surrounding air and therefore absorbs heat from this surrounding air.

In the higher elevations of Colorado, their is very little moisture to absorb heat from the air, therefor you feel warmer even at colder temps.

In SoCal, the rain is absorbing the heat from the air. In the summer, the rain will prevent the body from releasing heat so the humidity will make you feel warmer.

Whew. I think I have that correct.

Shoot, learn and share. It will make you a better photographer.
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13 years 3 weeks ago #38369 by Scotty

Baydream wrote: When moisture is falling it is pulling the cold air from the upper atmosphere down with the pressure that the drops are falling down at so the heavier the rain the more cold air that will be brought down with it

Therefore the rain (which may start as snow in the clouds) will be colder than the surrounding air and therefore absorbs heat from this surrounding air.

In the higher elevations of Colorado, their is very little moisture to absorb heat from the air, therefor you feel warmer even at colder temps.

In SoCal, the rain is absorbing the heat from the air. In the summer, the rain will prevent the body from releasing heat so the humidity will make you feel warmer.

Whew. I think I have that correct.


Here's tom with the weather! :cheers:

When the last candle has been blown out
and the last glass of champagne has been drunk
All that you are left with are the memories and the images-David Cooke.

Photo Comments
,
13 years 3 weeks ago - 13 years 3 weeks ago #38371 by Baydream

Scotty wrote:

Baydream wrote: When moisture is falling it is pulling the cold air from the upper atmosphere down with the pressure that the drops are falling down at so the heavier the rain the more cold air that will be brought down with it

Therefore the rain (which may start as snow in the clouds) will be colder than the surrounding air and therefore absorbs heat from this surrounding air.

In the higher elevations of Colorado, their is very little moisture to absorb heat from the air, therefor you feel warmer even at colder temps.

In SoCal, the rain is absorbing the heat from the air. In the summer, the rain will prevent the body from releasing heat so the humidity will make you feel warmer.

Whew. I think I have that correct.


Here's tom with the weather! :cheers:

Actually, I studied meteorology way back in 8th grade, before they had real weather. I now volunteer at the local NBC affiliate and get to know the weather team pretty well.


And I remember how cold it is at 14,000 feet atop Pikes Peak where there's little oxygen and constant wind.

Shoot, learn and share. It will make you a better photographer.
fineartamerica.com/profiles/john-g-schickler.html?tab=artwork

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,
13 years 3 weeks ago #38373 by Scotty

Baydream wrote:

Scotty wrote:

Baydream wrote: When moisture is falling it is pulling the cold air from the upper atmosphere down with the pressure that the drops are falling down at so the heavier the rain the more cold air that will be brought down with it

Therefore the rain (which may start as snow in the clouds) will be colder than the surrounding air and therefore absorbs heat from this surrounding air.

In the higher elevations of Colorado, their is very little moisture to absorb heat from the air, therefor you feel warmer even at colder temps.

In SoCal, the rain is absorbing the heat from the air. In the summer, the rain will prevent the body from releasing heat so the humidity will make you feel warmer.

Whew. I think I have that correct.


Here's tom with the weather! :cheers:

Actually, I studied meteorology way back in 8th grade, before they had real weather. I now volunteer at the local NBC affiliate and get to know the weather team pretty well.


And I remember how cold it is at 14,000 feet atop Pikes Peak where there's little oxygen and constant wind.


Do any storm chasing?

When the last candle has been blown out
and the last glass of champagne has been drunk
All that you are left with are the memories and the images-David Cooke.

Photo Comments
,
13 years 3 weeks ago - 13 years 3 weeks ago #38374 by Baydream

Scotty wrote:

Baydream wrote:

Scotty wrote:

Baydream wrote: When moisture is falling it is pulling the cold air from the upper atmosphere down with the pressure that the drops are falling down at so the heavier the rain the more cold air that will be brought down with it

Therefore the rain (which may start as snow in the clouds) will be colder than the surrounding air and therefore absorbs heat from this surrounding air.

In the higher elevations of Colorado, their is very little moisture to absorb heat from the air, therefor you feel warmer even at colder temps.

In SoCal, the rain is absorbing the heat from the air. In the summer, the rain will prevent the body from releasing heat so the humidity will make you feel warmer.

Whew. I think I have that correct.


Here's tom with the weather! :cheers:

Actually, I studied meteorology way back in 8th grade, before they had real weather. I now volunteer at the local NBC affiliate and get to know the weather team pretty well.


And I remember how cold it is at 14,000 feet atop Pikes Peak where there's little oxygen and constant wind.


Do any storm chasing?

Not since we were caught in a waterspout in the Chesapeake Bay, had a hurricane hit, and then a tornado touched down in our yard, all in the same year summer. Last fall, we weathered a hurricane in out little cottage on the bay in Canada. On the Bay of Fundy, the storms come to us, no chasing necessary.

Extreme High tide with a storm. That's out cottage .


Shoot, learn and share. It will make you a better photographer.
fineartamerica.com/profiles/john-g-schickler.html?tab=artwork

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13 years 3 weeks ago #38375 by Scotty

Baydream wrote:

Scotty wrote:

Baydream wrote:

Scotty wrote:

Baydream wrote: When moisture is falling it is pulling the cold air from the upper atmosphere down with the pressure that the drops are falling down at so the heavier the rain the more cold air that will be brought down with it

Therefore the rain (which may start as snow in the clouds) will be colder than the surrounding air and therefore absorbs heat from this surrounding air.

In the higher elevations of Colorado, their is very little moisture to absorb heat from the air, therefor you feel warmer even at colder temps.

In SoCal, the rain is absorbing the heat from the air. In the summer, the rain will prevent the body from releasing heat so the humidity will make you feel warmer.

Whew. I think I have that correct.


Here's tom with the weather! :cheers:

Actually, I studied meteorology way back in 8th grade, before they had real weather. I now volunteer at the local NBC affiliate and get to know the weather team pretty well.


And I remember how cold it is at 14,000 feet atop Pikes Peak where there's little oxygen and constant wind.


Do any storm chasing?

Not since we were caught in a waterspout in the Chesapeake Bay, had a hurricane hit, and then a tornado touched down in our yard, all in the same year summer. Last fall, we weathered a hurricane in out little cottage on the bay in Canada. On the Bay of Fundy, the storms come to us, no chasing necessary.

Extreme High tide with a storm. That's out cottage .


I love extreme weather. I don't like the injuries, loss of life, damage. I just like the power of the storm.

When the last candle has been blown out
and the last glass of champagne has been drunk
All that you are left with are the memories and the images-David Cooke.

Photo Comments
,
13 years 3 weeks ago #38377 by Baydream

Scotty wrote: I love extreme weather. I don't like the injuries, loss of life, damage. I just like the power of the storm.

My wife used to love it until the tornado hit. Hurricanes she can stand, a tornado is a different beast. Greenish, sideways winds, and a terrifying roar. Seen it twice (the waterspout and the tornado) and that's enough.

Shoot, learn and share. It will make you a better photographer.
fineartamerica.com/profiles/john-g-schickler.html?tab=artwork

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13 years 3 weeks ago - 13 years 3 weeks ago #38442 by chasrich
"Why is it colder - or at least why does it SEEM colder - at say 45 degrees and raining than at 10 below but dry."

It has a lot to do with physics. A person will suffer hypothermia in cold water much faster than a person in cold air of the same temperature. The conductivity of the heat away from the body is much faster. This holds true for wind chill and also explains why blocking this thermal transfer with insulated clothing and blankets works so well. Damp, dense, high humidity air conducts heat better than dry air. It's why we sweat so much in Florida during the summer and why you are colder in your moist cold air environment.

I forgot... the higher altitude is a factor as well. Vacuums do not conduct heat well at all.

“Amateurs worry about equipment, professionals worry about money, masters worry about light, I just make pictures… ” ~ Vernon Trent
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13 years 3 weeks ago #38467 by Baydream

chasrich wrote: Vacuums do not conduct heat well at all.

We have a Oreck vacuum, does that matter? :toocrazy:

Shoot, learn and share. It will make you a better photographer.
fineartamerica.com/profiles/john-g-schickler.html?tab=artwork

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13 years 3 weeks ago #38476 by chasrich
:rofl: I can always count on you, John, for a punch line...

“Amateurs worry about equipment, professionals worry about money, masters worry about light, I just make pictures… ” ~ Vernon Trent
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