August 12, 2007 Local Mammatus
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These popped out behind a severe line of storms in eastern NE. Anytime you get some real robust convection, I'd be on the lookout for these, once the sun gets low enough. Often you can't even make them out, even if it's clear, until the sun is setting. These were pretty cool in this one small area pictured above. The rest of the sky had them, but not near as much definition to them.
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It's kind of nice that this area I always walk my parent's dogs, now has some gravel on it and has been made into this road. It can certainly be used to lead you into any local mammatus displays.
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I exposed this as far right on the histogram as I could, just to where the clouds would start to blow out. This gives you as much shadow info as possible. Shadows were still way too dark so they had to be opened in post-processing. Normally this is fairly easy to do, even with a treeline needing masked. The problem comes when the sky just above the treeline is almost the same lightness. Making that mask layer can be pretty tricky in these cases. Best way I've found to do that is using the "select color range" in photoshop, but even so, it's hard to do in areas of shots like the above. Being able to adjust the foreground and background independant from one another is soooo helpful to photographs of the sky. If you don't bother then your foreground is going to be darker than reality. The above image is about as representable as I can get the thing(minus the slight blow out area in the mammatus).
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Oh yeah, earlier I intercepted that severe line in town, up at the outdoor cookout thing. It had an ok shelf, but nothing like I was hoping for. Windwise it was fair, likely a bit over 60mph. I froze my butt off once it hit, as I was an idiot wearing a tanktop, shorts and sandals. Only a very small circle of pavement wasn't getting rain blow on it. Next time I'm certainly wearing something warmer. |