National Weather Service meteorologist Scott Truett said the heavy "thundersnow" resulted from an unstable air mass, much like a thunderstorm.
BBC: 'Thundersnow' storm in US Midwest blamed for two deaths
"It's a subtropical air mass, " Pedram Javaheri, and can spark thunderstorms as it collides with a cooler front coming over from Texas.
Up to a million people are expected to attend Sunday's open-air mass in Madrid, where two priests and three nuns are to be canonised.
The largest crowd during the Pope's stay is expected on Sunday, when he will say an open-air mass in Blonie, near the centre of Krakow.
Eventually we may even be able to drive the market to offer better solutions that fit our needs, versus what suppliers of air mass transportation offer us today.
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That is due, in part, to the presence of a cool and dry air mass to the north and west of the tropical storm, said CNN meteorologist Sean Morris.
"Thundersnow" accompanied the winter storm in parts of Kansas and Missouri, which National Weather Service meteorologist Scott Truett said is the result of an unstable air mass, much like a thunderstorm.
In front of more than two million people at the open air Mass that formed the centrepiece of the visit, he spoke about new dangers opening up for mankind as technology progressed.
Many in Cuba and around the world listened closely to the pope's homily at the enormous open-air Mass Wednesday to see whether he would expand on -- or be more forceful in -- his apparent criticisms.
Celebrating open-air Mass at the Nationals stadium in Washington DC on Thursday, the Pope spoke of the sexual abuse of children by US Catholic clergy before talking privately to a group of people who had been abused by priests.
Peter Fincham, ITV's director of television, called the figures a testament to "the enduring popularity of high-quality television content broadcast free-to-air to mass audiences".
British Overseas Air Corporation was a precursor to BA, concentrating on long-haul routes in the early years of mass air travel.
Once the jet engine allowed mass air travel, pampering and soothing stopped and the whiff of romance became an advertising copywriter's fiction.
Oxley and in the various labs, being briefed on exactly how these researchers work to make air travel and mass transit safer and thwart terrorist use of explosives.
The same goes for the mass air flow sensor, which calculates the amount of air coming into the car and determining yhow much fuel to shoot into the engine.
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Officials elected to hold the Mass in the open air to avoid the risk of injury from falling debris.
In a warm front, a mass of relatively warm air pushes against a block of cooler air and is forced to flow up over it.
They are unlikely to confront us conventionally with mass armor formations, air superiority forces, and deep-water naval fleets of their own, all areas of overwhelming U.S. strength today.
Mold in homes hasn't been tracked historically, but certain building practices like making homes more airtight, installing air-conditioning units and using materials like drywall and oriented strand board, an engineered wood product have made homes more conducive to mold growth than they were in the past, says Jeffrey May, principal scientist at May Indoor Air Investigations based in Tyngsborough, Mass.
They are also some 80% quieter because the mass of slower-moving air shrouds the noisy hot gases coming from the rear of the jet.
Personally, I will bemoan the beach and park closings, the shorter library hours, the cuts in water, air, and soil conservation, and mass transit funding.
The designers of the plant at Chena, however, managed to slash their capital outlay by substituting mass-produced parts from air-conditioners for the bespoke components of most geothermal plants.
ECONOMIST: Geologists are getting more juice out of the ground
The party most likely to be harmed from such a move would be Israel, which would lose its ability to bomb Syrian weapons of mass destruction sites from the air.
Air is pumped in and then compressed by the mass of water above it.
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The same physics apply to vehicles immersed in air and water, allowing for different values of mass and viscosity.
Before The Queen departs, she will be treated to a mass flypast of aircraft representing the Royal Air Force's past and present.
But last Friday, with the threat of mass Muslim riots hanging thickly in the air, the House of Lords announced that it was cancelling the event.
On average they gain 32.6%, 40.9% and 46.8% additional dry weight mass, respectively, when grown in air containing an extra 300, 600, and 900 parts per million of CO2.
From a virus's perspective, there will be a single mass of humans, tightly connected by air travel, with plenty of susceptible people to fuel the fire of new plagues, whether natural, accidental or deliberate.
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