After forming over Raton Mesa in southern Colorado, and over 3 hours churning north-northeastward, a supercell with intense midlevel mesocyclone still was alive and forging over an increasingly deep pool of outflow air, with a deck of stratified low clouds overhead and surface temperatures in the upper 50s. The near-side cloud feature was an arcus cloud riding outflow from the rain-filled … [Read more...]
Milk River Rampage
A heavy-precipitation (HP) supercell just had been overtaken by the southern portion of a squall line, but retained its strong midlevel rotation, keeping it a line-embedded supercell fronted by an accelerating wall of wind and hail. The resulting storm rampaged southeastward down the Milk River Valley of northern Montana at highway speeds of 60 mph or more. Though even a brief stop would allow … [Read more...]
Dusty Supercell with “Ring of Saturn”
Beauty, or ugliness, is in the eye of the beholder, especially when it comes to cloud forms. In this case, I'd call it both, rendering a weird and somewhat otherworldly sky unlike any I've seen in a very long time. The supercell started out high-based, its outflow strong enough to loft countless thousands of tons of openly exposed, west Texas topsoil, its inflow slowly growing intense enough to … [Read more...]
Icy Variety
This was a wondrous assortment of freshly fallen hail in one place, the only addition being the knobby, nearly 2-inch-diameter piece from merely a couple feet to the right of the view. Sizes ranged from less than pea sized to hailstones about half an inch larger than the measured specimen, based on a few others I noticed later. It's fascinating to contemplate the multitude of processes, … [Read more...]
Montana Prairie Sentinel
Outflow from the storm in the distant background rushed across the rolling Montana prairies, whipping the wildflowers to and fro, and offering us a cool breeze within which to enjoy the scenery. The same outflow also acted as a source for lift, supporting development of this vigorous (but elevated) cluster of towering cumulus and cumulus congestus clouds. We casually enjoyed this splendid view, … [Read more...]
Blue Sky Window
Expectations of rampaging storms, marching across the Kansas High Plains in an armada of unseasonable September severity, drew us a few hundred miles northwestward. One magical sunset and some splendid nocturnal lightning kept us there. The storms developed about where and when I had expected, but stayed very small—so small in fact that several lined up in a row along the dryline. Their narrow … [Read more...]
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