The last chase of the 2025 spring season for me ended in early summer as some have, and also as some have, with outflow. At least this time, it was a splendidly layered, photogenic, tiered arcus formation from a band of multicells and weak supercells that developed to the west near Grand Island. By this time, in central Nebraska, the corn is at least "haah as a man's aah," as my East … [Read more...]
Tropical Cave Dripstone
Some cave dripstone assemblies, such as those in Carlsbad Caverns, are mainly round in cross section, with some platy shapes; however, these were almost uniformly flattened. I'm not sure to what extent the climate above regulates their shape, since Carlsbad lies under subtropical semi-desert, whereas northwestern Thailand's Chiang Dao is natively a tropical rainforest. Regardless of those … [Read more...]
Underlain Coloring Layers
A midwinter flight from Chicago to Tokyo, closely following the Great Circle route through subarctic to Arctic lands of North America, offered the chance for some interesting high-latitude viewing before sunset. Here, sunset already was occurring beneath the later of altocumulus translucidus undulatus clouds, reddening both their own undersides and some fuzzy, semi-opaque stratus areas beneath. … [Read more...]
South Plains Tornado
A tornado with a stubby condensation cone stirred up plenty of dust during its 10–15-minutes of fame over the Texas South Plains, northwest of Lubbock. The tornado roamed about the south side of a large low-level mesocyclone, and did not move very much, except generally southward with the drift of the parent supercell. As this is a dusty area above the Caprock, the circulation dutifully raised … [Read more...]
Border-Crossing Left Mover
An expanding, heavy-precip, left-moving supercell was crossing the Rio Grande from Mexico to Texas, and didn't even bother with any green cards nor border crossings. The river and border, just a couple miles off-image to the right, was no impediment for this storm. The supercell, now pushing out a deep, tiered arcus formation, had begun to gust out with severe wind and hail, though its midlevel … [Read more...]
Broken-Funnel Tube
The second and last discrete supercell we intercepted in the Upper Delta event produced two brief, small tornadoes for us in a hazy and very moist environment, before racing across the Mississippi River and into Kentucky, on a track just north of the earlier supercell. This was the first of the second supercell's tornadoes. Note the breaks in condensation. The actual tube of tornadic wind was … [Read more...]
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