Today brought mainly sunny skies to the area as a high pressure moved through the region, with temperatures similar to those of yesterday. Cloud cover is increasing as the next storm is moving in, but unlike most of this month’s storms, however, this one will produce frozen precipitation north and west of NYC, with the potential for up to 1-2 inches of snow and sleet in Sussex and Orange counties by tomorrow morning. This is not the last of the snow possibilities, however, as yet another storm on Wednesday may bring frozen precipitation to parts of the area.
Tomorrow’s Outlook: Snow, Sleet To Rain
The cold air mass that has been over the area for the last few days is now moving out as a storm affecting the Great Lakes is moving east, expected to move through the Northeast tomorrow and towards Maine tomorrow night. There will be enough cold air ahead of the storm to result in frozen precipitation especially north and west of NYC, and as a result, once precipitation moves in between 3 and 6 AM west of NYC, it will fall in the form of snow for northern NJ and interior SE NY. 850 mb temperatures will also be below freezing for NYC and Long Island when precipitation starts, however due to warm surface temperatures, rain is expected to fall in these areas.
A burst of moderate snow is possible in the northwestern parts of the area tomorrow morning, especially towards Sussex and Orange counties, which will then change over to sleet, followed by a changeover to rain. The storm will be quick to move out, ending west of NYC by noon-2 PM. By the time that the storm ends, at least 1 to 2 inches of snow and sleet are expected in parts of Sussex and Orange counties, and I issued a Light Snow Alert for these areas as a result.
For southern Connecticut, precipitation will begin in the morning hours and intensify by the early afternoon. Despite 850 mb temperatures below freezing when the heaviest precipitation falls, it will do so during the afternoon with warm surface temperatures, and precipitation type by then will most likely be rain. The storm will end by the late afternoon.