Snow, combined with moist, warm air were the main causes for the thick fog that blanketed Fort St. John, Thursday.

Environment Canada Meteorologist Doug Lundquist says that while thick fog is often present during this time of year, the length of time it lingered was unique.

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Lundquist added that because there was little wind at ground level the fog did not dissipate like it normally does.

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Lundquist says that while there will probably be more instances of fog in the area over the coming weeks, it is highly unlikely that it will blanket the city for such a long length of time.