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Monday, March 26, 2012

San Diego Sky Turning To Storm

Yesterday we had a bit of rain. I made the mistake of not getting my camera set up until the sky had already clouded over, so I missed all the drama of it going from blue to grey*, but I still managed to get the transition of grey to dark grey. Here's 3 hours of sky in 3 minutes. Enjoy!


* - Is it gray or grey?

5 comments:

  1. That's amazing!! I think it's grey.

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  2. I particularly like the bit near the beginning, where the puffy clouds are clearly moving in a different direction from the others.

    And regardless of whether you spell it "gray" or "grey", it's pronounced "throat-warbler mangrove".

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  3. Thanks, computer Master!

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  4. Tim, I'm always surprised by that. Why are there orthogonal currents in the air? When they talk about high and low pressure systems, the pressure centers must be altitude-dependent.

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  5. It might be related to the Ekman spiral effect. Basically, fast high-altitude winds are bent more by the Coriolis effect than slower, near-surface winds, so as you go up the wind direction often shifts pretty markedly. Particularly when the wind speeds are very high.

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