Current DC Snow Snapshot & Stats

Well there’s lots of snow in DC! Reports say this will surpass total snowfall of any storm in the past decade, and we may have to look even farther back than that. Right now (9:30 AM ET) there is about 10 inches or so, and it’s still coming down fast and fluffy. Woohoo!

To put this in perspective, let’s look at some average monthly snowfalls for the Washington, DC area vs the rest of the United States. Data is from the National Oceanic and Atmospheric Administration (NOAA) National Climatic Data Center (NCDC) and represents the past 40 years of data for DC and (on average) 52 years for the rest of the United States. Total stations is 276, many from the weather stations at regional/national airports. Here is the raw data set (before I cleaned it up for visualization).

To note, the total average annual snowfall for Washington, DC is about 19.5 inches, while the total average annual snowfall for the rest of the United States is about 32.2 inches. This does, however, include some extreme values from Alaska (and Puerto Rico for some zeros too). The maximum annual snowfall was at Valdez, Alaska with 326.0 inches. If I was to do this comparison again, I might trim some extremes from both sides of the data set, but now it’s time to go play in the snow.


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