The precipitation will begin as snow, and then transition over to all rain by Monday night. Start time of the precipitation will be critical as to how much snow we'll receive. As of now, 3PM Monday looks to be a general start time for the Easton area. If it starts earlier, expect more in the way of snow. A later start would mean less snow, and a quicker transition to rain.
Snow accumulations should be an inch or two, mainly on non-treated surfaces, but an earlier start time may be mean more snow. If the snow intensity increases, accumulations could impact travel on all roads, and any changeover to sleet or freezing rain could make travel difficult, especially from Interstate 78 northwards to the Poconos.
Liquid totals from this storm could be in the one inch range, so expect ponding on roads, and possible impacts to creeks and streams. As of now, flooding of the area rivers is not expected.
Here is the Hazardous Weather Outlook for Northampton and Warren counties from the NWS:
SNOW IS EXPECTED TO DEVELOP BETWEEN 11 AM AND 4 PM MONDAY AND ACCUMULATE AN INCH OR TWO BEFORE CHANGING TO SLEET AND FREEZING RAIN EARLY MONDAY EVENING AND THEN TO NON FREEZING RAIN SOMETIME DURING MONDAY NIGHT. TIMING OF THE TEMPERATURE WARMING ABOVE 32 DEGREES MONDAY NIGHT IS UNCERTAIN. THERE IS A SMALL CHANCE THAT ELEVATIONS SEE FREEZING RAIN LINGER TIL 6AM TUESDAY.
A GLAZE OF UP TO A TENTH OR TWO TENTHS OF AN INCH IS POSSIBLE MONDAY NIGHT.