Low pressure intensified off the New England coast while high pressure approached from the Midwest. A strong gradient between these two systems caused windy conditions.
Every event with a place to put it; 4 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.
Low pressure intensified off the New England coast while high pressure approached from the Midwest. A strong gradient between these two systems caused windy conditions. The gusty winds combined with cold air for extremely low wind chills for locations near the Allegheny Front.
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 Jan 11, 6:38 PM EST, 11 hours 22 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
4 extreme cold/wind chill. Local standard time, as filed.
Wind chill values were estimated to be around -20F.
Wind chill values were estimated to be around -20F.
Wind chill values were estimated to be around -20F.
Wind chill values were estimated to be around -20F.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2011Every state in 2011This day in weather historyWarnings in Virginia, January 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 2026-09-24. Each event’s entry at NCEI: 280479, 280482, 280481, 280483.