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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