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DPChallenge Forums >> Tips, Tricks, and Q&A >> Conditions for fog
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01/21/2005 05:24:28 AM · #1
What do the conditions have to be for fog?
Does anyone know?
Like fog along a river bank or roling across a lake, what do I need to look out for the night before?
01/21/2005 05:25:59 AM · #2
I haveno idea, but get up early in the country and you should see it in the lower hills and above lakes.

Think it has to be cold overnight with abright sun in the morning. I have no idea.

Warmer air rising over cold ground?


Message edited by author 2005-01-21 05:27:13.
01/21/2005 05:28:01 AM · #3
One thing I would say is get up high - fog looks nice low down but doesn't make for a good photograph - I like to be above the fog.

01/21/2005 05:30:45 AM · #4
In the uk the local weather reports are usually pretty good at warning for fog, worth checking maybe?
01/21/2005 05:31:48 AM · #5
A warm day followed by a cold night will usually do it. Clear skies and little or no wind the night before.

As to fog not making for good shots ...

was reasonably successful :-)

E

Message edited by author 2005-01-21 05:32:27.
01/21/2005 05:52:00 AM · #6
Originally posted by UNCLEBRO:

What do the conditions have to be for fog?
Does anyone know?
Like fog along a river bank or roling across a lake, what do I need to look out for the night before?


Anytime you have a cooler then average night in most areas will produce fog.

Sometimes just acool night after a hot day. Depends on many things including dew point and barametric presure. Around water it is the cool air over warmer water that produces fog.

You live in Charleston you should have no problem finding fog most months out of the year if you get up early.
01/21/2005 05:58:46 AM · #7
//www.activeangler.com/articles/safety/articles/lee_parsons/fog.asp
01/21/2005 06:13:43 AM · #8
Originally posted by Beagleboy:

//www.activeangler.com/articles/safety/articles/lee_parsons/fog.asp


Well I guess I was a least half wrong. Maybe. What is the fog I see rising over warm water on cold mornings? Help me out. There is a famous picture I remember of snow monkeys bathing in a hot spring in the dead of winter with fog all around them. National Geographic probably.

Whats that called, steam fog or something?


01/21/2005 06:49:57 AM · #9
Originally posted by UNCLEBRO:

What do the conditions have to be for fog?


You just have to live in San Francisco. :-)
01/21/2005 07:27:18 AM · #10
Originally posted by nsbca7:

Originally posted by Beagleboy:

//www.activeangler.com/articles/safety/articles/lee_parsons/fog.asp


Well I guess I was a least half wrong. Maybe. What is the fog I see rising over warm water on cold mornings? Help me out. There is a famous picture I remember of snow monkeys bathing in a hot spring in the dead of winter with fog all around them. National Geographic probably.

Whats that called, steam fog or something?


mist

01/21/2005 07:39:30 AM · #11
From what I understand conditions are good for fog when the dew point temp is near the actual temp. The closer the two the more dense the fog. I believe.
01/21/2005 07:42:27 AM · #12
Maybe this could help:

//www.weather.com/glossary/f.html

Scroll down the page. "Fog" is about half-way down.

01/21/2005 07:47:43 AM · #13
Originally posted by jonpink:


mist


Mist is similar to fog except it may appear more ragged and forms on rainy days with the air saturated due to the amount of moisture. Mist is more common in mountainous and forest regions


01/21/2005 07:53:43 AM · #14
Originally posted by jonpink:

Originally posted by nsbca7:

Whats that called, steam fog or something?


mist
ARCTIC SEA SMOKE A type of advection fog that forms primarily over water when cold air passes across warmer waters.
Related term: steam fog

STEAM FOG
A type of advection fog that is produced by evaporation when cool air passes over a warm wet surface and the fog rises, giving the appearance of steam. Also called sea smoke when it occurs over the ocean.
Related term: Arctic Sea Smoke

I guess I wasn't wrong.
01/21/2005 08:08:14 AM · #15
the water is warmer than the air, and this causes it to evaporate faster than when the temperatures are more equal.


01/21/2005 08:49:23 AM · #16
If you have a nice 55F day while there is a foot or so of snow on the ground, all that frozen water will sublimate nicely creating a LOT of fog.


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