This forecast isn't a slam-dunk
Every day, the National Weather Service's Baltimore-Washington forecast office in Sterling, Va., posts updated discussions on the forecast. The discussions offer guidance and additional details about the forecast.
As of Monday afternoon, the meteorologists there were unwilling to commit to specific forecasts. Due to exact storm track uncertainty, the National Weather Service did not want to go into too many details.
The computer models were split Monday about the storm's track. Some had the storm pushing just offshore and moving up the coast. Others had the storm forming farther east, sparing the Mid-Atlantic from the majority of heavy precipitation.
Once the storm track is more clear, forecasters will be able to say with more confidence how much precipitation will fall and what type.