The National Weather Service has issued a Winter Storm Watch for Tuesday for a wide area of Maryland including Montgomery County.

NWS says five inches or more of snow is possible, though it called for 2-4 inches earlier Monday morning:

…WINTER STORM WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING…

THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WINTER STORM WATCH…WHICH IS IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING.

* PRECIPITATION TYPE…SNOW

* ACCUMULATIONS…POTENTIAL FOR FIVE INCHES OR MORE.

* TIMING…TUESDAY THROUGH TUESDAY EVENING. THE HEAVIEST SNOW WILL BE LATE TUESDAY MORNING THROUGH TUESDAY AFTERNOON.

* TEMPERATURES…DROPPING INTO THE TEENS.

* WINDS…BECOMING NORTH 10 TO 15 MPH WITH GUSTS AROUND 25 MPH TUESDAY AFTERNOON AND EVENING.

* IMPACTS…ROADS WILL BE SNOW COVERED AND SLIPPERY. THE COMBINATION OF SNOW AND BLOWING SNOW WILL REDUCE VISIBILITY TO BELOW ONE-HALF MILE AT TIMES. TRAVELLING MAY BE DANGEROUS TUESDAY. THE MORNING AND EVENING COMMUTE MAY BE IMPACTED BY THE SNOW.