South, East brace for big storm, significant snowfall

If the storm tracks a little farther south, it would mean more snowfall for more of the area.

You can find our latest forecast thinking on snowfall amounts for Jonas at this link.

In Baltimore, at least 18.0 inches of snow will have to fall to rank in the top 10 biggest storms. Winter storm warnings are also in effect for far north Georgia.

Predictions of icy roads and freezing temperatures prompted school closings and emergency preparations in several states in the U.S. South on Wednesday, ahead of a major storm expected to blast snow across the Northeast later this week. Upper 20s to lower 30s across southern Maryland.

Given that the system is now over a region that has more upper air and surface weather observations for computer forecast models to ingest, this may in turn lead to an even more confident forecast in the next 24 hours.

More information can be gathered on the storm as it moves east, which will improve forecasts, he said.

The chances of snow persist through Saturday. But, if the track changes much more to the south, we may only get grazed by the storm for a shorter period of time.

By this point, strong winds are expected from the Midwest down to the Southeast and into the Mid-Atlantic.

Prepare for the possibility of power outages during snowy and cold conditions.

But this much is clear: Full-moon tides will coincide with the arrival of the storm.

An unidentified man pushes a auto out of the snow January 7, 1996 in Washington, D.C. Philadelphia, Washington and Baltimore are all inches behind an average season and Boston is more than a foot below the 30-year average. This point of the timeline is critical since the storm’s location and speed will be the difference between a light snowfall and a heavy one.

We’re not saying Jonas will bring those extreme snowfall totals to Washington, D.C.