This expansive area of mammatus, which extended overhead and far to the southwest, developed under the collective rear anvil from multiple thunderstorm clusters, after an afternoon of observing an unrelated, isolated supercell attached to the Black Hills. Although clouds to the west and northwest blocked direct sunset light from getting illuminating it, the formation was no less amazing to behold, reminding me of a soft, plush blanket tossed across most of the sky.
7 SSW Cottonwood SD (8 Jun 18) Looking SW
43.8534, -101.9279
Dakota Mammatus: Northeast
This expansive area of mammatus, which extended overhead and far to the southwest, developed under the collective rear anvil from multiple thunderstorm clusters, after an afternoon of observing an unrelated, isolated supercell attached to the Black Hills. Although clouds to the west and northwest blocked direct sunset light from getting illuminating it, the formation was no less amazing to behold, reminding me of a soft, plush blanket tossed across most of the sky.
7 SSW Cottonwood SD (8 Jun 18) Looking SW
43.8534, -101.9279