Virginia, 2020

Dense Fog in Virginia, June 23, 2020

June 23, 2020 · NWS LWX · 21 events in 21 counties and zones

Light winds and ample moisture at low levels thanks to storms the previous day resulted in the formation of dense fog across much of the central Virginia Piedmont, Shenandoah Valley and portions of northern Virginia.

Where it happened

Every event with a place to put it; 20 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

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
21

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.

Light winds and ample moisture at low levels thanks to storms the previous day resulted in the formation of dense fog across much of the central Virginia Piedmont, Shenandoah Valley and portions of northern Virginia.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before the first event at Jun 23, 3:01 AM EST, 1 hour 7 minutes earlier.

Area forecast discussion, Jun 23, 3:01 AM EST, 1 hour 7 minutes before
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Hazardous weather outlook, Jun 23, 2:09 AM EST, 1 hour 59 minutes before
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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

21 dense fog. Local standard time, as filed.

Dense Fog, Rockingham

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Rockingham forecast zone
Reported by
AWOS
Coordinates
38.481, -78.872 (the zone’s center; the record gives no point)

Dense Fog, Shenandoah

When
June 23, 4:08 AM EST to 8:00 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, Page

When
June 23, 4:08 AM EST to 8:00 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
June 23, 4:08 AM EST to 8:00 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, Madison

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Madison forecast zone
Reported by
AWOS
Coordinates
38.414, -78.279 (the zone’s center; the record gives no point)

Dense Fog, Rappahannock

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Rappahannock forecast zone
Reported by
AWOS
Coordinates
38.685, -78.159 (the zone’s center; the record gives no point)

Dense Fog, Culpeper

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Culpeper forecast zone
Reported by
AWOS
Coordinates
38.486, -77.956 (the zone’s center; the record gives no point)

Dense Fog, Prince William

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Prince William forecast zone
Reported by
AWOS

Dense Fog, Stafford

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Stafford forecast zone
Reported by
AWOS
Coordinates
38.421, -77.457 (the zone’s center; the record gives no point)

Dense Fog, Spotsylvania

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Spotsylvania forecast zone
Reported by
AWOS
Coordinates
38.244, -77.558 (the zone’s center; the record gives no point)

Dense Fog, Northern Fauquier

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Northern Fauquier forecast zone
Reported by
AWOS
Coordinates
38.739, -77.809 (the zone’s center; the record gives no point)

Dense Fog, Southern Fauquier

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Southern Fauquier forecast zone
Reported by
AWOS
Coordinates
38.739, -77.809 (the zone’s center; the record gives no point)

Dense Fog, Northern Virginia Blue Ridge

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Northern Virginia Blue Ridge forecast zone
Reported by
AWOS
Coordinates
38.573, -78.412 (the zone’s center; the record gives no point)

Dense Fog, Orange

When
June 23, 4:08 AM EST to 8:00 AM EST
Where
Orange forecast zone
Reported by
AWOS
Coordinates
38.246, -78.013 (the zone’s center; the record gives no point)

Dense Fog, Nelson

When
June 23, 6:15 AM EST to 8:00 AM EST
Where
Nelson forecast zone
Reported by
ASOS
Coordinates
37.787, -78.887 (the zone’s center; the record gives no point)

Dense Fog, Albemarle

When
June 23, 6:15 AM EST to 8:00 AM EST
Where
Albemarle forecast zone
Reported by
ASOS
Coordinates
38.029, -78.477 (the zone’s center; the record gives no point)

Dense Fog, Greene

When
June 23, 6:15 AM EST to 8:00 AM EST
Where
Greene forecast zone
Reported by
AWOS
Coordinates
38.298, -78.467 (the zone’s center; the record gives no point)

Dense Fog, Frederick

When
June 23, 7:20 AM EST to 8:00 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, Clarke

When
June 23, 7:20 AM EST to 8:00 AM EST
Where
Clarke forecast zone
Reported by
AWOS
Coordinates
39.112, -77.997 (the zone’s center; the record gives no point)

Dense Fog, Western Loudoun

When
June 23, 7:20 AM EST to 8:00 AM EST
Where
Western Loudoun forecast zone
Reported by
AWOS
Coordinates
39.091, -77.636 (the zone’s center; the record gives no point)

Dense Fog, Eastern Loudoun

When
June 23, 7:20 AM EST to 8:00 AM EST
Where
Eastern Loudoun forecast zone
Reported by
ASOS
Coordinates
39.091, -77.636 (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

More

Every storm in Virginia in 2020Every state in 2020This day in weather historyWarnings in Virginia, June 2020

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 2026-09-24. Each event’s entry at NCEI: 905826, 905827, 905828, 905829, 905830, 905831, 905832, 905833, 905834, 905835, 905836, 905837, 905838, 905846, 905843, 905844, 905845, 905839, 905840, 905841, 905842.