Hundreds of Long Island schools and organizations announced they're closing Monday, or delaying their opening, after a record weekend snowstorm that left up to 27 inches of snow on the ground.

Schoolkids by the thousands got an additional day to expand snow forts, build a higher snowman and engage in snowball fights.

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Many of their parents weren't so lucky, however. Commuters Monday face a potential nightmare of clogged roads and dangerous driving conditions.

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>> DIVERSIONS: Going out? Best sledding spots | Staying in? Top 9 of 2009 lists