Snow is looking to be likely on St. Patrick's Day, but whether it does much accumulating remains a tricky call.
Here is what forecasters are saying about the event, expected to start late Sunday and last into Monday:
The National Weather Service's Baltimore/Washington office isn't yet suggesting any possible accumulation totals, but suggests cold air is likely to move in overnight turning a mix of rain and sleet into snow.
AccuWeather.com suggests a narrow band of 4-8 inches of snow running along the Mason-Dixon Line, with snowfall possible across West Virginia, northern Virginia, Pennsylvania and New Jersey.
Foot's Forecast is calling for as much as three-quarters of an inch of liquid precipitation, which could translate to a significant snowfall if temperatures are cold enough, though rain mixing in would limit any accumulation. Forecasters acknowledged "problematic" factors including an intensifying March sun angle, warm ground and iffy timing of when snow might fall.
Former TV meteorologist Justin Berk writes on his Facebook page that Marylanders shouldn't expect everything that falls to stick, and holds off on making any accumulation predictions until 48 hours out.
"We are looking at a rare - but not unheard of - winter storm for Sunday night and Monday," writes local meteorologist "Eric the Red". He suggests 3-8 inches of snow are possible, though totals could go higher if the storm's track is more northerly.