Freezing Rain Redeveloping this Evening along Interstate 95

Here are the Latest Snowfall Reports (a bust with mainly sleet in Metro DC) from the NWS Database

As has been the trend this winter, the far northwest suburbs received a bit more snow but sleet even ruined the party for these areas as well with 7.2″ so far being the unofficial winner near Martinsburg, WV.

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Latest Guidance Significantly Increasing Ice Amounts in DC Metro

The latest trend in this evening’s forecast model guidance from both the American and European models have increased the amount of ice accumulation across the DC Metro Area Saturday afternoon through the overnight.  If these trends hold, the Winter Weather Advisories currently in place across parts of the DC Metropolitan Area may be upgraded to Ice Storm Warnings!

Ice Storm Warnings are issued when ice accretion (accumulation) from freezing rain is at least a quarter-inch which is capable of causing tree damage and scattered to widespread power outages.

Winter Weather Advisories are issued when ice accretion from freezing rain is expected to remain under a quarter-inch.

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Models Trending Colder Today: Nasty PM Rush Hour N&W of DC; Updated Snow Map through 5 PM Today

The forecast models are trending a bit faster with the change over to snow and sleet this afternoon across the interstate 95 corridor Don’t be surprised to see Winter Weather Advisories extended south and east to cover more of the immediate Metropolitan Area for the afternoon hours given the 1″ at rush hour rule

Updated Snow Map for Accumulations of Snow and Sleet through 5PM today:

While the main roadways will likely be wet, your secondary neighborhood streets may begin to become slush covered as the sun begins to lower in the atmosphere as we approach the beginning of the afternoon commute.  Today is one of those days where if too many people try to leave DC at once, we are looking at an exceptionally nasty rush hour.

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