Complex sentence: The Burns' Day Storm occurred on January 25--26,1990, over Northwestern Europe and is one of the strongest storms on record, causing widespread damage and hurricane force winds over a wide area.
Split into simpler sentences: The Burns' Day Storm occurred on January 25--26,1990, over Northwestern Europe and is one of the strongest storms on record. Starting on the birthday of Scotish poet Robert Burns, it caused widespread damage and hurricane force winds over a wide area.