The Connecticut River long has been painted, drawn and photographed along various parts of its length down west-central New England, but seldom has been depicted quite like this. The midday sparkle of the water, through heavy timber cladding the 1911 Mt. Orne Covered Bridge, let light into the mid-structure, but only in narrow, regularly spaced slits. On the right was Vermont, on the left, New … [Read more...]
Killeen Storm Mustache
Al Moller often said, "Beware storms with mustaches!", not because they necessarily would become tornadic, but because they generally are supercells, and something hazardous was about to happen. This storm dropped severe hail around several cyclic mesocyclones in a long trek across the Hill Country and off the Balcones Escarpment. Here, over Killeen, it exhibited a long, ragged wall cloud with … [Read more...]
Cirrus over Mt. Washington Observatory
Cirrus fibratus grades to a street of cirrostratus, with a fading old contrail mixed in for good measure. This all wafted over an iconic and legendary meteorological spot: the Mount Washington Observatory. An unusually calm, splendid day belies the thoroughly wretched and dangerous conditions that often blast this place in the cool season. With no barrier to low-level jets blowing from any … [Read more...]
Ominous, Nearby Wall Cloud
[Part 3 of 3] Less than a mile to the NW, the wall cloud had a very low base for an LP storm and was furiously rotating. The scalloped "humps" on the right (NE) side of the wall cloud raced rapidly up and around its side, spiraling in a frantic dervish of helicity. The four chasers on the scene, all hardened storm veterans (me, Bobby Prentice, Gene Moore and Jeff Passner) were thinking aloud … [Read more...]
More Rotan LP
[Part 2 of 3] Cyclonically curved bands are visible in the ambient cloud base, especially in front of the wall cloud (upper center). These bands spiraled from left to right; while scud formed near the tip of the rear tail cloud and moved right to left. This is textbook, mesocyclonic wall cloud structure. A downburst at right had dissipated, leaving only a thin, translucent remnant core … [Read more...]
Rotan Wall Cloud
[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 microburst is visible at lower right, north of the mesocyclone. The chunk of scud in front of the wall cloud (upper foreground) … [Read more...]
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