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Snowfall rates exceeding 2 inches per hour fell along a narrow area. Radar imagery indicates slow moving snow showers that 'trained', or moved across the same area through the overnight hours. This event was more typical of summertime thunderstorms, just without the lightning (since it is winter!). How was this event similar to summertime thunderstorms?....The snow showers were about the same scale, or size, of a thunderstorm. A weak disturbance interacted with a surface boundary to initiate the snow showers, much the same as happens in the summer with thunderstorm initiation. The atmosphere contained instability, which allowed the initiated showers to intensify and produce heavy snow. In the summer, when thunderstorms 'train', or move across the same area again and again, flash flooding can occur. In this case, snow showers moving across the same area again and again produced heavy snow.
Preliminary Snowfall Totals (with radar esimate)
Preliminary 48 Hour Snowfall Totals (Public Information Statement)
Radar Loop 1 (531 PM - 1134 PM Wednesday)
Radar Loop 2 (1143 PM Wednesday to 435 AM Thursday)
Radar Loop 3 (440 AM - 1212 PM Thursday)