Two other tornadoes were produced by the same supercell thunderstorm
, one first touching down in Wilbraham and the other touching down in North Brimfield.
During the late afternoon and evening of June 16, 2007, a high precipitation supercell thunderstorm
tracked from across northern Montana, just to the north of a warm front.
The same parent supercell thunderstorm
spawned an EF-1 tornado southwest of Echo, Alabama in Dale County at 1948 UTC (1:48 PM CST) and traveled 38 miles to the northeast across Henry County, Alabama, and Clay and Quitman counties in southwest Georgia before it lifted at 2038 UTC (3:38 PM EST).
The supercell thunderstorm
which spawned the tornado developed over southeast Missouri.
Giammanco's paper, "Observations of Hailstone Characteristics in Multi-cell and Supercell Thunderstorms
," details the data collected during hail field research studies IBHS conducted in 2012 and 2013, which show that the hardness property of hailstones can be quantified through in-situ measurements.
TWISTEX has been collecting observations in and near tornadoes associated with supercell thunderstorms
for six years.
Two ingredients are necessary to form the supercell thunderstorms
that spawn tornadoes: A source of buoyant energy, namely warm and moist air near the ground, and a rotational force generated by winds at the surface blowing at a different speed or direction than winds high in the atmosphere.
A highly unstable air mass that developed on April 13 led to a large number of hailstorms in a relatively small region, and several supercell thunderstorms
formed and produced large hailswaths across portions of Illinois, Indiana, Iowa, and Wisconsin during a 30-hour period.
Between May 2 and May 11, 2003, multiple supercell thunderstorms
developed and spawned numerous tornadoes, hailstorms and straight-line windstorms.
Tornadoes are often the byproduct of supercell thunderstorms
, which evolve from a tilted updraft, surface moisture and strong humid winds from the south or southeast, he said.
With over 100 color photos, including awe inspiring images of tornadoes, supercell thunderstorms
, lightning, hail and a riveting chronicle of his journeys, Faidley takes his readers into the wild world of the storm chaser.
On May 22nd, as enhanced winds in the jet stream moved over the cold frontal boundary, conditions became very conducive for the formation of rotating supercell thunderstorms
over the entire region, from Minnesota to Texas.