All Zones Update 11:00am: Snow continuing near the coast

Regional mesoscale analysis shows a developing storm system, which is continuing to move off the coast of the Mid Atlantic states and strengthen this morning. Bands of light and moderate snow have expanded and intensified over the last hour or two, aided by the development of more favorable frontogenesis and lift in the atmosphere. These dynamics will continue to remain favorable over the next few hours.

Snow will continue to evolve from southwest to northeast throughout all zones through this afternoon. The heaviest and most impactful snow will occur across Southern and Eastern New Jersey, Central and Eastern Long Island, and Eastern Connecticut. Here, upwards of 6″ of snow appears likely. Roads and travel will likely be heavily impacted by the snowfall and conditions will deteriorate as the late morning and early afternoon continue.

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A snowfall gradient will develop just inland from the coast, in much of Central New Jersey, near NYC and Central CT. Amounts will vary over short distances, with higher amounts to the east and lower amounts the further west one goes. Snowfall totals are expected to be closer to 1″ near the Delaware River Valley and near 5-6″ at Newark Airport — as an example of the gradient.

Dynamically, favorable lift and frontogenesis will continue through early afternoon. This will be especially true, as discussed, near the shore. Short term forecast models suggest the development of a band of moderate to heavy snow, particularly along Long Island, during the early to mid afternoon hours. This banding may produce intense snowfall rates and reduced visibilities.

Our local snowfall map has been tweaked and updated to include the latest changes to the going forecast. Additional zone updates are expected through the early afternoon.