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Another Forward-Flank Spinup

2024-11-30 By Roger Edwards

Another Forward-Flank Spinup

As of this writing, I’ve only seen about a half dozen forward-flank tornadoes in all my time storm observing, and all but one were with this weird, midday supercell!  While one at right foreground dissipated under a still-rotating, scuddy part of an updraft base (note faint dark dust rightward of lower center), another persisted in the back, to the SW of the dying circulation.  All of these updrafts were riding along or very close to an occluded front, north of the NNE-moving synoptic surface low that (at this time) was not only the anchoring mesocyclone of the supercell, but its main tornado.   The occluded front also marked the forward-flank gust front, ensuring reinforcement of already considerable horizontal vorticity to be stretched by these updrafts.

3 S Long Island KS (20 Jun 11) Looking WNW
39.901, -99.5354

Filed Under: Tornadoes Tagged With: clouds, convection, Great Plains, Kansas, landscapes, Long Island, storms, supercells, thunderstorms, tornado, weather

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About

Welcome to SkyPix, an online photo book of clouds, weather and water by Roger Edwards. As in a printed coffee-table book, every image has its own page with a unique story. After all, meaningful photography is much more than just picture-taking; it is visually rendering a moment in place and time from a perspective like none other. As a scientist and an artist, I hope my deep passion for the power and splendor of our skies and waters shines through in these pages. If you are a cloud and weather aficionado, outdoor enthusiast, outdoor or nature photographer, art lover, or anyone who craves learning, enjoy...

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Further images from this photographer may be found at:
Roger Edwards Image of the Week
Roger Edwards Digital Galleries
Storms Observed Chase BLOG

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