The largest storm in 3 years will be an all out storm. This will be an all day event with falling temperatures and increasing winds. It may continue a trend of large snow events and will surely break the old records in Baltimore and Washington.
I made one slight adjustment to my initial snowfall map. I’ve expanded the 6”-10”+ plus region south of Annapolis and north of York/Lancaster in PA. I have also added a pink zone to include an 8”-12”+ zone along the MD/PA line and into Philadelphia. This could be much higher, but will be hard to decipher with blowing and drifting snow. Consider the cold temperatures will bring high snow ratios. See more about that here.
Today's Snowfall Records THAT WILL BE BROKEN:
BWI= 2" in 1982
Washington = 3.2" in 1982
Ten Inch Storm Trend
Baltimore has averaged a large storm over 10 inches every 3 to 4 years. This included 3 events in the winter of 2009-2010. It has been 4 years since our last one, so we are due:
2010 Feb 9-10= 19.5”
2010 Feb 5-6 = 25.0”
2009 Dec. 18-19= 18.0”
2006 Feb 11-12 = 13.1
2003 Feb 15-19 = 28.2
2000 Jan 25 = 14.9”
1996 Jan 7-9 = 26.6”
1993 Mar 13-14 = 11.9”
With temperatures falling through the teens and into the single digits, any wind will be a problem. But forecast winds over 20 mph will bring wind chill values between -5F and -15F, so Wind Chill Advisories and Warnings are region-wide late afternoon and into Wednesday.
With close to 10” of snow (plus or minus a few) and winds gusting to 25 mph, the dry powdery snow could easily drift over 2 ft in spots. This will make it difficult to keep roads clear, beyond the cold temperatures and chemical troubles
Kid Weather App
This is a great time to work off the active weather and see the app I made with my son (when he was 6 years old). It won a Parents Choice Award, was listed on Mashable.com's top 10 list of apps to teach kids science, and has been downloaded in 29 countries. We have over 400 items of trivia plus live weather and forecasts for kids. It's available on iTunes and for Android on Google Play and Amazon. See more and links for your device at kidweatherapp.com
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