1200 tornadoes recorded over 4 months in the U.S.

27.05.11.Amerikanskie scientists explain: tornado — small-scale yavlenie.V outback they remain nezamechennymi.V been actively colonized the previously uninhabited areas.

In addition, this year has been very mature La Niña, so that winter was snowy and holodnaya.Ego result was a cold and snowy zima.Vesna identified significant contrasts in temperature, which contributed to a large number of vortices in a relatively short period.

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