Hurricane Sara is likely to form by lateweek, become a major hurricane early next week, then it's got Florida in the crosshairs. Only one thing could throw it off track.

CHAOS TO CLARITY: In this video series, AccuWeather's Chief Video Meteorologist Bernie Rayno dives into the chaos of meteorology and computer model predictions for upcoming storms, sorting through the data to develop accurate forecasts. First up: This weekend's storm.

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