Author Topic: Ice Fog Difference???  (Read 258 times)

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Offline Aharon Dayan

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Ice Fog Difference???
« on: January 20, 2017, 05:42:01 AM »
Shalom and greetings all my pals,

What is difference between ice fog and normal fog?  Can any of you please be kind enough to show real photos showing me difference?  I googled for photos and could not tell difference!!

Regards,

Aharon

Offline Brin Brody

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Re: Ice Fog Difference???
« Reply #1 on: January 20, 2017, 06:56:05 AM »
Hi Aharon,

According to the definition of "Ice Fog", it is "fog formed of minute ice crystals." whereas "Normal Fog" is "a thick cloud of tiny water droplets suspended in the atmosphere at or near the earth's surface that obscures or restricts visibility (to a greater extent than mist; strictly, reducing visibility to below 1 km)."

Ice Fog = Fog, but the water droplets that form it are frozen, instead of liquid or gaseous.

I couldn't find any pictures for you either...  Sorry about that.

~Brin
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Offline Aharon Dayan

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Re: Ice Fog Difference???
« Reply #2 on: January 22, 2017, 06:32:38 AM »
Thanks, Brin

Hoping other Alaskan natives here would show photos explaining to me difference.

Regards,

Aharon

Offline Marvin Palmer

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Offline Aharon Dayan

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Re: Ice Fog Difference???
« Reply #4 on: January 26, 2017, 06:23:20 AM »
Marvin

I still cannot see difference   LOL

Regards,

Aharon

Offline Marvin Palmer

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Re: Ice Fog Difference???
« Reply #5 on: January 30, 2017, 06:46:36 PM »
busted out laughing!!

You are correct Aharon...
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Offline Daniel Hawton

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Re: Ice Fog Difference???
« Reply #6 on: February 28, 2017, 08:24:46 PM »
Old thread.. but here is the basic of it regarding weather as there is another in the mix as well.

Mist is a basically fog that obscures visibility below 7SM but above or equal to 5/8SM
Fog is visible water particles, or a cloud, that touches the ground and obscures visibility to below 5/8SM
Freezing Fog (or as you called it "Ice Fog") is listed in the METAR as FZFG when fog is occurring and the temperature is at or below 0C

A cloud is water particles that are visible, but have no contaminants to cling to to fall to earth.  Where a cloud exists is the point where the temperature and dewpoint are equal (temperature being a measurement of how much water the air can hold, dewpoint being how much water the air is holding) and the excess condensates.  Rain, drizzle, snow, etc. is water that has condensated around a particle like dust, smoke, etc. which allows it to fall (keep that in mind next time you open your mouth to let a snowflake fall on your tongue).

FZFG is specifically listed due as icing is VERY likely to be occurring at the surface and that presents an extreme hazard to aviation.  Depending on the freezing level, any possible inversion layers, etc. it could be possible that icing exists at the surface but not aloft.
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Offline Aharon Dayan

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Re: Ice Fog Difference???
« Reply #7 on: March 03, 2017, 06:26:24 AM »
Daniel,

Welcome back to ANARTCC and thanks for explanations but I still need to see difference between normal fog and ice fog via photos or videos to understand.  LOL   ::) ::) ::) ;D ;D ;D ??? ??? ??? ??? :o :o :o :o

Regards,

Aharon

Offline Brin Brody

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Re: Ice Fog Difference???
« Reply #8 on: March 03, 2017, 06:47:32 AM »
Does this help?

Ice Fog:


Normal Fog:


Good luck seeing the difference... That was the best I could do.
Brin Brody (BT)
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Offline Daniel Hawton

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Re: Ice Fog Difference???
« Reply #9 on: March 03, 2017, 10:19:53 AM »
There is no visible difference.  Frozen Fog is only reported as such when there is fog and the temperature is at or below freezing.
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