A strong low pressure system shifted northeast out of the Lower Mississippi Valley with a track crossing the extreme southern end of the Southern Appalachian Mountains in Southeast Tennessee and Southwest North Carolina. The strong southerly flow with this system produced mainly rainfall across the region, but as the low pressure center moved east into the Western Carolinas, orographic snowfall…
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MRX wrote it up.
A strong low pressure system shifted northeast out of the Lower Mississippi Valley with a track crossing the extreme southern end of the Southern Appalachian Mountains in Southeast Tennessee and Southwest North Carolina. The strong southerly flow with this system produced mainly rainfall across the region, but as the low pressure center moved east into the Western Carolinas, orographic snowfall developed as temperatures dropped below freezing in the cold northwesterly flow behind the departing storm system.
The national radar mosaic for the moment the first event began.
2 heavy snow. Local standard time, as filed.
A snowfall depth of 5.8 inches was measured at Newfound Gap.
Four inches of snow was reported at Iron Mountain.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2018Every state in 2018This day in weather historyWarnings in Tennessee, December 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 793000, 793001.