http://news.bbc.co.uk/2/hi/americas/6286484.stm

Buenos Aires sees rare snowfall

Buenos Aires residents came out on the streets to see the snow

Argentina's capital, Buenos Aires, has seen snow for the first time in 89 years, as a cold snap continues to grip several South American nations. Temperatures plunged to -22C (-8F) in parts of Argentina's province of Rio Negro, while snow fell on Buenos Aires for several hours on Monday.
Two deaths from exposure were reported in Argentina and one in Chile.
In Bolivia, heavy snowfall blocked the nation's main motorway and forced the closure of several airports.
In Argentina, several provinces in the Andes have been placed under a storm alert, according to the national weather centre.
But thousands of people cheered in the streets of Buenos Aires at the sight of the capital's first snowfall since 1918.
"Despite all my years, this is the first time I've ever seen snow in Buenos Aires," 82-year-old Juana Benitez was quoted as saying by the Associated Press news agency.
Energy strain
In Chile, temperatures dropped to -18C (0F) in parts of Araucania region in the south.



Your snowfall pictures

Meteorologists predict that the cold snap will last for several more days.
Bitterly cold weather in May caused some 20 deaths and forced the Argentine authorities to ration supplies as the country's energy system came under strain.
Monday's snowstorm struck on a national holiday in Argentina. The authorities are watching the demands on the power grid as the country gets back to work on Tuesday.
However, ministers have already appealed to consumers to save energy where they can.
Correspondents say although Argentina's economy has been growing strongly in recent years, there has not been sufficient investment in infrastructure.
Argentine meteorologists are predicting more cold and even freezing weather over the next few days.

Aren't unusual temperature drops like this part of the whole global warming effect?

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Change is difficult.

In the Live Earth thread in this same section I posted an interesting video from BBC that explains this.

One scientist said that global warming ought to create less major and odd storms. That's because dramatic weather conditions are caused by much different world temps coming together. Global warming would create less cold temps and that would mean less storms.

I'm not backing that, but found it interesting.

Yes! If it's really cold, that's global warming. And if it's really warm, that's global warming. If it's neither, we wait for more data under the assumption the globe is warming.

Strange weather happens somewhere every day. If it was easily predictable, weather forecasting wouldn't be the multi-billion dollar industry that it is. Whether you choose to believe it or not, there's certainly enough evidence to support the global warming theory. But single wether events like this nether prove or disprove that theory. I would rather err on the side of caution than subject future generations to a world made wrong by shortsighted human consumption and selfishness.

Isn't it winter in Argentina?

Yup, they're in the Southern Hemisphere, Lat 35S, on the Atlantic coast, so you would expect their weather to be comparable to Cape Hatteras, NC (Lat 35N) in January. Snow is surprising, but not outrageously so.

First snowfall since 1918. It would so that's outrageously so.

Weather and climate are not the same. Global warming is global climate change - the overall average temperature of every location on the globe on a year to year basis is increasing. This doesn't require that every place on the globe have its annual temperature increase by the same amount - or at all. And an increase in the overall annual temperature at a given location doesn't require that the temperature throughout the year always be higher.

Snow in Argentina is weather. Using the example of snowfall in Argentina to try to disprove global warming is just as foolish as using yesterday's hot weather in Philadelphia to try to prove it.... I don't know why people continue to do both.