Surface high pressure caused mainly clear skies and light winds during the night of the 4th into the early morning of the 5th. There was enough low-level moisture available for areas of dense fog to develop during this time.
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.
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 LWX wrote it up.
Surface high pressure caused mainly clear skies and light winds during the night of the 4th into the early morning of the 5th. There was enough low-level moisture available for areas of dense fog to develop during this time.
The national radar mosaic for the moment the first event began.
5 dense fog. Local standard time, as filed.
Visibility was estimated to be around one quarter mile based on observations nearby.
Visibility was reported to be around one quarter mile at Patuxent River.
Visibility was around one quarter mile at Annapolis.
Visibility was around one quarter mile at Martin State Airport.
Visibility was estimated to be around one quarter mile based on observations nearby.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2011Every state in 2011This day in weather historyWarnings in Maryland, December 2011
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: 355625, 355626, 355622, 355623, 355624.