[Part 1 of 3] Sample the evolution of a close, rotating wall cloud in a briefly classic supercell evolving back toward LP (low-precipitation) structure. Tiered inflow tail structures give this wall cloud a double-decker appearance. A difluent rain foot from a small forward-flank microburst is visible at lower right, north of the mesocyclone. The chunk of scud in front of the wall cloud (upper … [Read more...]
Line-Embedded Mesocyclone
Shortly before this image, a portion of the line just to the left of this shot, containing the rear-flank downdraft to this circulation, hit the Memphis, TX mesonet site with 114-mph gust. That was the strongest nontornadic wind of an extensive severe-weather event that kept rolling east over most of Oklahoma in the next few hours. This short-lived, moderately rotating, embedded circulation … [Read more...]
Cryptic Current, See?
No convection had appeared in the sky an hour before, yet a fast-developing, fast-moving squall line rushed forth with blasts of lightning, embedded mesocirculations, and even severe hail. The atmosphere can evolve speedily! At the very spot where nearly six years before, I had shot a classically structured, discrete supercell, on this evening I faced a furiously chaotic and growing band of … [Read more...]
Middle Silver Falls
Overshadowed by the nearby "Magpie High Falls", this smaller yet still beautiful cascade, tucked into a densely forested area, likewise tumbles the Magpie River toward Lake Superior. This looks like an inviting area for water play once the stream warms up some more into the Algoma Country summertime. Michipicoten ON (15 Jun 7) Looking NNW 47.94, -84.829 … [Read more...]
Skeleton Forest
Skeleton forests can happen from any cause of mass tree death, the most common being fire and (as here) flood. A large grove of deceased cottonwoods bathed in shallow water, along an arm of western Nebraska's Lake McConaughy. Warm late-spring winds whistled through the upper reaches of the arboreal graveyard, their gentle gusts offering a rhythmic ode to the cycles of life on the water's edge. … [Read more...]
Iridescent Altocumulus Translucidus Undulatus
Right in my front driveway, one chilly morning, the most amazing display of cloud iridescence I've seen breezed by in the mid-troposphere, within a patch of altocumulus translucidus undulatus that was wavy horizontally as well as vertically. I placed my big ol' fist before the sun and deliberately underexposed the surrounding blue sky by a few stops, in order to capture the fullest possible … [Read more...]
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