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.