High Voltage

August 24, 2006


Provided and copyright by: Ulrich Beinert
Summary authors & editors: Jim Foster; Ulrich Beinert

The above image composite showing a vivid lightning display over Phoenix, Arizona was captured on July 23, 2006. It's actually a digital composite of a selection of twelve out of approximately one hundred 10-second exposures, and it represents the lightning activity over a period of nearly 20 minutes. Mid to late July is the expected time for the arrival of the southwest monsoon in Arizona. This year its onset was particularly noteworthy -- it arrived with a vengeance.

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