Dense Fog in Maryland, December 13 to 14, 2007

Name: Dense Fog in Maryland, December 13 to 14, 2007
Start: 2007-12-13T21:00
End: 2007-12-14T11:00
Location: Maryland

December 13 to 14, 2007 · NWS LWX · 6 events in 6 counties and zones

Areas of dense fog developed during the late evening hours of December 13th and continued through late morning on December 14th across portions of northern and central Maryland, including the northern and eastern Washington DC suburbs and southern and western Baltimore suburbs. Visibilities were often 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.

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 Dec 13, 8:58 PM EST, 2 minutes earlier.

Area forecast discussion, Dec 13, 8:58 PM EST, 2 minutes before

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Hazardous weather outlook, Dec 13, 3:36 PM EST, 5 hours 24 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
336 PM EST THU DEC 13 2007

ANZ530>537-DCZ001-MDZ003>007-009>011-013-014-016>018-501-502-
VAZ021-025>031-036>042-050>057-WVZ050>055-501>504-141000-
CHESAPEAKE BAY NORTH OF POOLES ISLAND MD-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD-
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD-
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA-
DISTRICT OF COLUMBIA-WASHINGTON-FREDERICK MD-CARROLL-
NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-
PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-
EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-HIGHLAND-
AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-
NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-FAUQUIER-LOUDOUN-
ORANGE-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-
ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-
KING GEORGE-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-PENDLETON-HARDY-
WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL-
336 PM EST THU DEC 13 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MARYLAND WEST OF THE
EASTERN SHORE INCLUDING THE CHESAPEAKE BAY AND EAST OF GARRETT
COUNTY...EASTERN WEST VIRGINIA...NORTHERN AND CENTRAL VIRGINIA...
WASHINGTON DC AND THE TIDAL POTOMAC RIVER.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A SIGNIFICANT WINTER STORM WILL IMPACT THE REGION BEGINNING
SATURDAY AND CONTINUING THROUGH SUNDAY. THE EXACT TIMING...TRACK
AND STRENGTH DETAILS ASSOCIATED WITH THIS STORM REMAIN UNCERTAIN
AT THIS TIME...HOWEVER IT IS LIKELY THAT AT LEAST A PORTION OF
THE REGION WILL EXPERIENCE SIGNIFICANT WINTRY PRECIPITATION.
CLIMATOLOGICALLY FAVORED LOCATIONS FOR WINTRY PRECIPITATION ARE
AREAS WEST OF INTERSTATE 81...WITH A VERY TIGHT GRADIENT OF A
WINTRY MIX OF PRECIPITATION ALONG THE I-95 CORRIDOR ASSOCIATED
WITH THE COASTAL FRONT...AND RAIN CLOSER TO SOUTHERN MARYLAND AND
KING GEORGE COUNTY VIRGINIA. CONFIDENCE ON WHERE THE COASTAL FRONT
SETS UP WILL LIKELY NOT BE HIGHER UNTIL FRIDAY...BUT ALL INTERESTS
IN THE REGION SHOULD BE ON ALERT FOR FUTURE UPDATES ON THIS
WEEKEND WINTER STORM.

GUSTY NORTHWEST WINDS BEHIND THIS WINTER STORM MAY REQUIRE GALE
WARNINGS ACROSS THE MARINE WATERS LATE SATURDAY NIGHT THROUGH
SUNDAY NIGHT AND GUSTS TO 40 MPH WILL BE POSSIBLE OVER THE LAND
AREAS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS EXPECTED THROUGH TONIGHT.

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, Montgomery

When: December 13, 9:00 PM EST to December 14, 11:00 AM EST
Where: Montgomery forecast zone
Reported by: AWOS

Dense Fog, Washington

When: December 13, 9:00 PM EST to December 14, 11:00 AM EST
Where: Washington forecast zone
Reported by: ASOS
Coordinates: 39.604, -77.814 (the zone’s center; the record gives no point)

Dense Fog, Carroll

When: December 13, 10:00 PM EST to December 14, 11:00 AM EST
Where: Carroll forecast zone
Reported by: Mesonet
Coordinates: 39.563, -77.022 (the zone’s center; the record gives no point)

Dense Fog, Frederick

When: December 13, 11:00 PM EST to December 14, 11:00 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, St. Mary'S

When: December 14, 2:00 AM EST to 11:00 AM EST
Where: St. Mary'S forecast zone
Reported by: Other Federal Agency
Coordinates: 38.216, -76.529 (the zone’s center; the record gives no point)

Dense Fog, Anne Arundel

When: December 14, 4:00 AM EST to 11:00 AM EST
Where: Anne Arundel forecast zone
Reported by: ASOS
Coordinates: 38.994, -76.568 (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

Every storm in Maryland in 2007 Every state in 2007 This day in weather history Warnings in Maryland, December 2007

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: 68271, 68273, 68269, 68270, 68272, 68268.