Saturated grounds from rain during the day combining with light winds and clearing skies let to the development of dense fog.
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.
Saturated grounds from rain during the day combining with light winds and clearing skies let to the development of dense fog.
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 22, 2:42 PM EST, 3 hours 16 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
5 dense fog. Local standard time, as filed.
HGR reported reduced visibilities of one quarter mile or less.
RSP reported periods of reduced visibilities of one quarter mile or less.
RSP reported reduced visibilities of one quarter mile or less.
BWI and NAK reported periods of reduced visibilities of one quarter mile or less.
MTN reported periods of reduced visibilities of one quarter mile or less.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2015Every state in 2015This day in weather historyWarnings in Maryland, December 2015
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: 610316, 610318, 610317, 610320, 610319.