Valley fog persists during autumn mornings across the Appalachian Plateau and Cumberland River regions. Low cloud cover is observed tracing the intricate network of valley branches within these areas. This phenomenon typically dissipates as the day progresses, yielding to clearer skies. The burning off process occurs predominantly by midday hours. Sightseers have reported that this localized weather pattern creates a striking visual effect throughout the morning.
Original reporting
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This PlaneNews briefing summarizes reporting originally published by www.nasa.gov.
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