If I've learned anything doing this weather blog, it's how much the forecasts from Sterling change from hour to hour.

So it shouldn't surprise me that Sterling has taken another look at the forecast. They've folded in new data and computer projections and concluded that conditions tomorrow may be ripe for snow, sleet, freezing rain and a nasty cold rain, but they say now that it won't be as troublesome as they feared this morning.

At least, that is, if you live south of the Mason-Dixon Line. That's where Sterling's turf ends, and forecasters north of the line - in Philly and State College - are always on their own wavelength on these forecasts. 

The PA folks still have Winter Storm Watches posted across much of the state - north of the MD Line. They're looking at enough snow and sleet, changing the rain and freezing rain to cause "significant" problems.

But south of the old boundary (and north and west of Baltimore), we may see similar conditions, but less of it, with mere "travel difficulties". So we get only a Winter Weather Advisory.

Baltimore and the southern portion of Baltimore County have also been removed from the advisory zone. No freezing rain there, they say now (or for points south and east), just rain and sleet, changing to all-rain later in the day Tuesday. Piece of cake.

But still Sterling is hedging its bets. "IF LATER MODELS COME IN COLDER THERE IS STILL TIME TO UP THIS TO A WARNING," they said. Here's how AccuWeather.com sorts it all out.

Here's the radar loop. Headed for New York? Looks like conditions will be better along I-95 than on the western route on I-83 and I-81 through Pennsylvania to I-78 or I-80.

All this, of course, could change as the hours tick by.