Dense Fog, Shenandoah
- When
- December 30, 6:00 AM EST to 9:00 AM EST
- Where
- Shenandoah forecast zone
- Reported by
- AWOS
- Coordinates
- 38.858, -78.571 (the zone’s center; the record gives no point)
Dense Fog in Virginia, December 30, 2019
Moisture underneath a subsidence inversion resulted in areas of dense fog. Visibility was around one-quarter mile.
Where it happened
Every event with a place to put it; 6 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 6
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.
What happened
The episode as NWS LWX wrote it up.
Moisture underneath a subsidence inversion resulted in areas of dense fog. Visibility was around one-quarter mile.
The radar
The national radar mosaic for the moment the first event began.
Event by event
6 dense fog. Local standard time, as filed.
Dense Fog, Shenandoah
- When
- December 30, 6:00 AM EST to 9:00 AM EST
- Where
- Shenandoah forecast zone
- Reported by
- AWOS
- Coordinates
- 38.858, -78.571 (the zone’s center; the record gives no point)
Dense Fog, Frederick
- When
- December 30, 6:00 AM EST to 9:00 AM EST
- Where
- Frederick forecast zone
- Reported by
- AWOS
- Coordinates
- 39.195, -78.213 (the zone’s center; the record gives no point)
Dense Fog, Page
- When
- December 30, 6:00 AM EST to 9:00 AM EST
- Where
- Page forecast zone
- Reported by
- AWOS
- Coordinates
- 38.620, -78.484 (the zone’s center; the record gives no point)
Dense Fog, Warren
- When
- December 30, 6:00 AM EST to 9:00 AM EST
- Where
- Warren forecast zone
- Reported by
- AWOS
- Coordinates
- 38.909, -78.207 (the zone’s center; the record gives no point)
Dense Fog, Clarke
- When
- December 30, 6:00 AM EST to 9:00 AM EST
- Where
- Clarke forecast zone
- Reported by
- AWOS
- Coordinates
- 39.112, -77.997 (the zone’s center; the record gives no point)
What these are
- Dense Fog
- Fog reducing visibility to a quarter mile or less, filed where it caused accidents or disruption.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- High Wind and Strong Wind in California, December 30 to 31, 2019
- Heavy Snow in Wisconsin, December 30 to 31, 2019
- High Wind in Ohio, December 30, 2019
- Flood in Wisconsin, December 30 to 31, 2019
- Strong Wind in New York, December 30, 2019
- Strong Wind in Connecticut, December 30, 2019
- Ice Storm and Hail in Massachusetts, December 30 to 31, 2019
- High Wind in Ohio, December 30, 2019
- Damaging Winds in Tennessee, December 30, 2019
- Winter Storm in Michigan, December 30 to 31, 2019
- Winter Weather in Wisconsin, December 30 to 31, 2019
- High Wind in Montana, December 30 to 31, 2019
More
Every storm in Virginia in 2019Every state in 2019This day in weather historyWarnings in Virginia, December 2019
Sources
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 2026-09-30. Each event’s entry at NCEI: 870043, 870045, 870046, 870047, 870048, 870049.