Maryland, 2008

Dense Fog in Maryland, April 9 to 10, 2008

April 9 to 10, 2008 · NWS LWX · 6 events in 6 counties and zones

Areas of dense fog developed during the early morning hours of April 10th across portions of northeastern Maryland, including the Baltimore and Washington DC suburbs, south into lower southern Maryland. Visibilities were reduced to one quarter mile or less.

Where it happened

Every event with a place to put it; 5 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
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.

Areas of dense fog developed during the early morning hours of April 10th across portions of northeastern Maryland, including the Baltimore and Washington DC suburbs, south into lower southern Maryland. Visibilities were reduced to one quarter mile or less.

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 Apr 9, 8:53 PM EST, 2 hours 7 minutes earlier.

Area forecast discussion, Apr 9, 8:53 PM EST, 2 hours 7 minutes before
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Hazardous weather outlook, Apr 9, 9:37 PM EST, 1 hour 23 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

6 dense fog. Local standard time, as filed.

Dense Fog, St. Mary'S

When
April 9, 11:00 PM EST to April 10, 10:00 AM EST
Where
St. Mary'S forecast zone
Reported by
AWOS
Coordinates
38.216, -76.529 (the zone’s center; the record gives no point)

Dense Fog, Prince Georges

When
April 10, 2:00 AM EST to 10:00 AM EST
Where
Prince Georges forecast zone
Reported by
AWOS
Coordinates
38.830, -76.847 (the zone’s center; the record gives no point)

Dense Fog, Anne Arundel

When
April 10, 2:00 AM EST to 10:00 AM EST
Where
Anne Arundel forecast zone
Reported by
AWOS
Coordinates
38.994, -76.568 (the zone’s center; the record gives no point)

Dense Fog, Carroll

When
April 10, 4:00 AM EST to 10:00 AM EST
Where
Carroll forecast zone
Reported by
AWOS
Coordinates
39.563, -77.022 (the zone’s center; the record gives no point)

Dense Fog, Frederick

When
April 10, 5:00 AM EST to 10:00 AM EST
Where
Frederick forecast zone
Reported by
AWOS
Coordinates
39.472, -77.398 (the zone’s center; the record gives no point)

Dense Fog, Montgomery

When
April 10, 5:00 AM EST to 10:00 AM EST
Where
Montgomery forecast zone
Reported by
AWOS

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 Maryland in 2008Every state in 2008This day in weather historyWarnings in Maryland, April 2008

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 2026-10-01. Each event’s entry at NCEI: 93389, 93388, 93390, 93386, 93385, 93387.