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#4659765 - 02/08/18 07:58 AM What temperature does water freeze at?
supton Offline


Registered: 11/09/08
Posts: 11986
Loc: NH
14F when I got up, not much warmer when I drove to work, yet the roads were wet, with puddles in spots.

I know there is a guy on here from California who says their water freezes at 50F; I guess NH water is a bit more hardy...

Yeepers, our salt budget must be huge.
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#4659767 - 02/08/18 07:59 AM Re: What temperature does water freeze at? [Re: supton]
Quattro Pete Offline


Registered: 10/30/02
Posts: 35885
Loc: Great Lakes
Originally Posted By: supton
I know there is a guy on here from California who says their water freezes at 50F;

LOL

Yeah, that California water is weak sauce.

Water over here is hardened with lead.


On a serious note, you have to consider road/surface temp as well. For example, air ambient temp might be 34F, but if the road temp is 30F (after a cold night maybe), water may still partially freeze.
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#4659775 - 02/08/18 08:10 AM Re: What temperature does water freeze at? [Re: supton]
supton Offline


Registered: 11/09/08
Posts: 11986
Loc: NH
Yeah, I know, although it was kinda early & it hadn't been that warm last night or yesterday -- we got 8 or so inches of snow. Maybe it was warmer yesterday than I remember, and the roads kept that heat overnight?

They did a bit of tandem plowing on my drive, so, after doing a few miles at 10-15mph one's mind tends to wander. This line of thinking popped in my head, so I just had to post when I got to work.
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#4659778 - 02/08/18 08:13 AM Re: What temperature does water freeze at? [Re: supton]
MNgopher Offline


Registered: 09/17/02
Posts: 4043
Loc: Lakeville, MN
I was going to mention the same thing - the air temperature isn't as important sometimes as the road surface temperature. And now that we are in February, the sun has a lot more power than it did in December and January (at least around here smile ), and some sun on a dark surface like a blacktop road can melt some serious snow and ice - salt or no salt. Odds are that salt did have some to do with it though smile

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#4659784 - 02/08/18 08:17 AM Re: What temperature does water freeze at? [Re: supton]
andyd Offline


Registered: 09/25/04
Posts: 7158
Loc: Marshfield , MA
Were the roads salted?
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#4659862 - 02/08/18 09:50 AM Re: What temperature does water freeze at? [Re: Quattro Pete]
Papa Bear Offline


Registered: 08/11/05
Posts: 7053
Loc: Leamington, ON, Canada ..... r...
Originally Posted By: Quattro Pete
LOL
Yeah, that California water is weak sauce.
Water over here is hardened with lead.


The Cuyahoga River has an octane rating !!
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#4659879 - 02/08/18 10:11 AM Re: What temperature does water freeze at? [Re: supton]
javacontour Offline


Registered: 06/26/03
Posts: 10306
Loc: Illinois
I know the boiling point depends on pressure. You can get water to "boil" at room temperature if you drop the pressure enough....
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#4659923 - 02/08/18 10:54 AM Re: What temperature does water freeze at? [Re: supton]
Nick1994 Offline


Registered: 02/19/13
Posts: 10123
Loc: Phoenix, AZ
I get ice on the roof of my car and frozen windshield when it gets down to 37 at night.

Then I spray washer fluid on and it freezes to the windshield!

Here’s a picture of frozen water droplets on my car at above freezing temps

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#4659926 - 02/08/18 10:56 AM Re: What temperature does water freeze at? [Re: Nick1994]
Quattro Pete Offline


Registered: 10/30/02
Posts: 35885
Loc: Great Lakes
Originally Posted By: Nick1994
I get ice on the roof of my car and frozen windshield when it gets down to 37 at night.

Then I spray washer fluid on and it freezes to the windshield!

You need better washer fluid. smile
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#4659928 - 02/08/18 10:57 AM Re: What temperature does water freeze at? [Re: Quattro Pete]
Nick1994 Offline


Registered: 02/19/13
Posts: 10123
Loc: Phoenix, AZ
Originally Posted By: Quattro Pete
Originally Posted By: Nick1994
I get ice on the roof of my car and frozen windshield when it gets down to 37 at night.

Then I spray washer fluid on and it freezes to the windshield!

You need better washer fluid. smile
Supertech crackmeup
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#4659943 - 02/08/18 11:14 AM Re: What temperature does water freeze at? [Re: supton]
KrisZ Offline


Registered: 12/23/06
Posts: 7473
Loc: Toronto, Canada
The answer is salt.
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#4659947 - 02/08/18 11:18 AM Re: What temperature does water freeze at? [Re: Nick1994]
Trav Offline


Registered: 11/20/06
Posts: 18900
Loc: MA, Mittelfranken.de
Originally Posted By: Nick1994
I get ice on the roof of my car and frozen windshield when it gets down to 37 at night.

Then I spray washer fluid on and it freezes to the windshield!

Here’s a picture of frozen water droplets on my car at above freezing temps



You need a new thermometer or the one in the car is way off. Water does not freeze at 37f, really.
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#4659970 - 02/08/18 12:03 PM Re: What temperature does water freeze at? [Re: Trav]
IndyIan Offline


Registered: 09/23/08
Posts: 9092
Loc: Ontario, Canada
Originally Posted By: Nick1994
I get ice on the roof of my car and frozen windshield when it gets down to 37 at night.

Air temperature doesn't always equal water temperature though.
Clear dry air at night can allow ice to form in water with higher than freezing air temps.
http://www.fieldstudyoftheworld.com/persian-ice-house-how-make-ice-desert/

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#4659997 - 02/08/18 12:56 PM Re: What temperature does water freeze at? [Re: IndyIan]
kschachn Offline


Registered: 12/26/05
Posts: 9418
Loc: Upper Midwest
Originally Posted By: IndyIan
Originally Posted By: Nick1994
I get ice on the roof of my car and frozen windshield when it gets down to 37 at night.

Air temperature doesn't always equal water temperature though.
Clear dry air at night can allow ice to form in water with higher than freezing air temps.
http://www.fieldstudyoftheworld.com/persian-ice-house-how-make-ice-desert/

Yep that's a good one, the night sky is a black body with a fairly low temperature. But you'd have to stay away since you radiate something like 1000 watts (not all in the same direction of course).
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#4660057 - 02/08/18 02:32 PM Re: What temperature does water freeze at? [Re: supton]
Cujet Offline


Registered: 02/15/03
Posts: 7164
Loc: Jupiter, Florida
I live in South Florida and I regularly make the claim that skim ice forms on Florida lakes at 50 degrees F.

Of course, it's an absolutely absurd statement that's simply meant to indicate that many of us in South Florida think 50 degrees is cold.
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