John Homenuk

Zone 2/8 (LI/CT) Update: Heavy snow continues today

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Bands of heavy snow will continue moving into the region late this morning and into this afternoon, as a low pressure system develops and continues to strengthen offshore. This low pressure will shift from a position off the New Jersey coast towards a position south of Southern New England as the day goes on today — strengthening quite significantly as it does so.

In the mid and upper levels of the atmosphere, dynamics will continue to become more impressive this afternoon. This will be most notable in the mid levels, where temperature and wind gradients will enhance a phenomenon known as “Frontogenesis”. This occurs when temperature and wind gradients create enhanced lift — leading to very heavy precipitation.

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Miguel Pierre

AM All Zones Update: Major Snowstorm Underway for Much of the Region

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An area of snow, sleet and rain overspread the region overnight. Precipitation started as some sleet and rain in some areas, because temperatures at the surface and aloft were warmer. But as low pressure strengthens near the Delmarva coast, the airmass will be turning colder with increasing northerly winds this morning. This cause precipitation will changeover to snow in all areas by 8am. It has already changed over to all snow from C NJ and north as of 7am.

Then snow will be moderate to heavy at times for rest of this morning through the region. Temperatures will be dropping into the 20s. So this snow will begin accumulate more rapidly on roadways this morning and reducing visibilities.

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John Homenuk

2/8 Afternoon Zones: Significant snow likely Thursday

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Significant snow is expected on Thursday, as a low pressure system moves from the Mid Atlantic to a position east of the New Jersey coast. The low pressure system will deepen rapidly, as a result of increasingly favorable dynamics in the atmosphere’s mid and upper levels. As the storm moves off the coast of New Jersey, bands of very heavy precipitation are expected to rotate inland, resulting in widespread heavy snow.

The event will begin as mixed precipitation, especially in Southeastern New Jersey and along the area coasts. Elsewhere, the mixed precipitation should transition fairly rapidly to snow, which will quickly become steady and eventually very heavy. Dynamic cooling will change rain and mixed precipitation to snow gradually in all areas, slowest over portions of Southern New Jersey on Thursday morning.

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Miguel Pierre

AM All Zones Update: Significant Snowfall Expected Late Tonight into Thursday

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A warm front will likely make little progress northward this morning, before a cold front moves through during the midday hours today. Drier northwest winds behind this front, will cause low clouds and fog to clear for more sunshine later this morning and afternoon. Temperatures will still rise into the 50s and some even lower 60s this afternoon, with a downslope flow. Then a colder airmass will begin moving into the region tonight.

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