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The NLC season has started in Washington state!
I have a fascination with these rare, very high-altitude noctilucent or night shining clouds (NLC) hanging at the edge of space with an electric blue glow, can’t be mistaken when these beautiful luminous blue-white tendrils are spreading across the sky in sunset afterglow over the Salish Sea (as seen here).

They’re composed of very small water ice crystals formed on minute particles of dust, possibly of cosmic origin from micrometeors. They are visible in the northern hemisphere at latitudes between 45˚and 65˚north, and occur after sunset or before sunrise from mid June to the end of July here at our latitude (47°).

Edmonds, WA
June 07, 2025 - around 11PM

Edited 30d ago

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