Take a look at a viral, time-lapse video of a supercell spotted in northeast Wyoming near Clareton Sunday by Basehunters Chasers:
"These low precipitation supercells are usually found in the Plains or northern Rockies as they form along a boundary dividing dry air to the west and more moist air to the east," AccuWeather.com Meteorolgist Brian Edwards said. "They generally do not occur east of the Mississippi River."
These storms produce little rainfall but can produce large hail or even a tornado, he said.
Due to the little rainfall, the storm's rotation is viewed more easily.
"The storm is rotating like a normal supercell thunderstorm but because there is little precipitation, you get a much clearer view of the cloud structure," he said, adding in the wide expanse of the Plains, precipitation normally obstructs the view.
The next day, Monday, storm chasers captured yet another low precipitation supercell.
A major severe weather event is set to unfold across the northern U.S. Plains and Canadian Prairies on Monday night with the potential for large and damaging tornadoes.
Drenching downpours, locally gusty thunderstorms and squalls at sea will continue in and around Florida through much of the week.
A heat wave will grip the Northeastern United States during the last week of July with temperatures climbing well into the 90s each afternoon.
Several days of excessive heat and humidity will put many at risk across a large portion of the United States this week.
There is a distinct difference between a watch and a warning, and knowing the difference can save your life.
Firefighters are gaining ground on the Wragg fire, which ignited July 22 off Highway 128 near Lake Berryessa, California.
Charlotte, NC (1979)
Last of 12 straight days on which some rain fell. Total precipitation was 3.74".
Redfield, SD (1990)
A total of 1.76" of rain in 25 minutes during the morning, then a tornado struck in the afternoon.
Hagerstown, MD (1992)
3.50" of rain.