Rozynski's farmstead, Yabba Valley, Queensland

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FOG in the YABBA VALLEY

About 5kms upstream (to left of picture) there is an irrigation dam, Lake Borumba, and it increases the humidity in the valley. Add to that a gentle katabatic air flow that descends from the plateau to the west, and flows down the valley at night. This katabatic flow of air distributes the fog along the main axis of the valley as far as Imbil (11kms), quite often. At Imbil, the valley opens out to a plain, and the fog disperses.

But, there are many times especially in winter, when the whole of the valley can be filled with fog due to temperature inversion, and then the plains beyond Imbil are shrouded in heavy fog.

In this summer photo, there is no fog in the side valleys (foreground, for example) for this is the slow katabatic airflow moving the high humidity from the lake, down the valley axis.

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Comments (6)

jeff_msn123 on December 31, 2012

Very thick fog. Wonderful shot. LIKE

Cheers from Hong Kong, Jeff

Ian Stehbens on January 1, 2013

Greetings for 2013, Jeff.

Yes, the fog is quite thick. Just 4 Kms upstream (to the left) is Lake Borumba which provides the high humidity to form a fog. A very gentle drift of air (katabatic breeze) then moves down the valley following the main axis of the valley. (This breeze happens most nights of the year, fog or no fog.)

Rozynski's farm is in a side or tributary valley of Little Derrier Creek, and hence is not beneath this fog.

I live a further 6 kms downstream, and we love the gentle breeze at nights and enjoy the fogs.

Best wishes,

Ian

bdeh on January 1, 2013

What a very nice picture of this thick fog Ian. LIKE! Greetings Berend

Ian Stehbens on January 1, 2013

Thanks Berend. I know this farm well, having spent weekends there when I was a boy. And as for the fog, I know it well for it slowly flows down the valley as far as Imbil, right past our home.

New Year greetings,

Ian

ebi lutze on January 25, 2013

Hi Ianfrom the Group A1-Unique Australia.What a wonderful capture. I like the fog hanging trapped in the valley L Regards Ebi

Ian Stehbens on January 25, 2013

Thanks Ebi.

About 5kms upstream (to left of picture) there is an irrigation dam, Lake Borumba, and it increases the humidity in the valley. Add to that a gentle katabatic air flow that moves down the valley at night, and this distributes the fog along the main axis of the valley as far as Imbil, quite often.

There are times, especially in winter however, when the whole of the valley can be filled with fog due to winter inversions.

Fogs get me out of bed, and out with the camera, quite often. I love the moods of the landscape.

Ian

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Photo details

  • Uploaded on December 31, 2012
  • © All Rights Reserved
    by Ian Stehbens

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