We had a localized but vigorous storm yesterday. I was in town. Ann was here, unsuspecting, and almost got caught outside when it suddenly swept over. A very close lightning strike kicked my surge protector and knocked off (but not out) my MacPro. Other than that, some wind and rain, it was no big event. It did provide some nice atmospheric evidence of unusual conditions by way of this nice bevy of mammatocumulus clouds–or just mammatus clouds. I took this shot yesterday around 6 …

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