Storm forecast: Another 2 to 5 inches of snow expected Tuesday

Forecasters say a couple more inches are possible by Tuesday, following close on the heels of Sunday's blanket of 4 inches of snow across Lancaster County.

Millersville University meteorologist Eric Horst said he expects between 2 and 5 inches across Lancaster County.

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The snow is expected to begin just before rush hour Tuesday morning, and be heaviest between 7 and 10 a.m. The quick-moving storm is expected to impact the area for about six hours before ending at about 1 p.m.

The National Weather Service has issued a winter weather advisory for snow. The advisory is in effect from 3 a.m. through 4 p.m. Tuesday.

The weather service is calling for 2 to 5 inches of snow beginning before sunrise and tapering off in the late morning and early afternoon. It is warning of poor visibility and snow-covered roads during the morning commute.

Temperatures will be in the upper 20s, so the snow will accumulate quickly.

'The storm for Tuesday is a quick-hitter. It's really being driven by a very powerful jet stream disturbance that's going to lift up across the mid-Atlantic region and move into the western Atlantic,' Horst said in a live discussion Monday with reporter Dan Nephin.

'(There's) plenty of cold air available for this storm. It's going to be all snow this time around. No ice like we had (Sunday,) but because it's quick hitting, that's really limits what you can get out of it.

'Right now, I think 2-5 inches is the most likely outcome. One wildcard is, these jet stream disturbances can often create a very small bulls-eye of heavy snow, so I suspect that somebody - maybe in northern Virginia, Maryland, or maybe south-central Pennsylvania - could even pick up a quick 6 or 7 (inches.)

'But I think that's the exception, not the rule. I think 2-5 (inches) is more likely,' Horst said.

AccuWeather has called for 3 to 6 inches in this area.

'Snow is expected to start on Monday night in the mountains of Tennessee, then quickly spread across the mid-Atlantic and New England throughout Tuesday,' AccuWeather meteorologist Brian Lada wrote today. 'Most locations will pick up 1 to 3 inches of snow from this storm.

'However, the worst of the snow looks to fall across the I-95 corridor with 3 to 6 inches of snow in the forecast for cities such as New York, Philadelphia, Washington, D.C., Boston and Baltimore.'