Still Expecting a Messy Monday Morning Commute
A mixed bag of precipitation is expected Sunday night and Monday morning. While we’re not expecting a lot of snow/ice, snow and ice-covered roads will likely slow the commute.
Here’s my latest thinking…
Tonight will be dry and cold…no weather-related travel problems at all. Even Sunday should be quiet during the day. Early sunshine, however, will give way to clouds.
Late Sunday evening and early Monday morning is when the problems begin.
Super Microcast Computer Model forecast for 3:30am Monday, Dec 9.
Light snow will develop, initially around midnight and sleet will likely be mixing in with the sleet through the early morning hours of Monday. Some accumulations are possible, but generally 2inches or less (the most in Northern RI). At no point in the storm am I anticipating heavy precipitation. The storm looks like it will be falling apart as it moves through the region.
Snow accumulation forecast for Dec 8th/9th
Lots of snow or not, any bit of snow/ice on the road can be dangerous. The sleet mixing in is an indicator that warmer air moving over us. Eventually, enough warm air will arrive that most of the precipitation in the area will be in the form of sleet or freezing rain.
Super Microcast Computer Model forecast for 6:00am Monday, Dec 9.
In fact, a cold rain will begin working into coastal areas early during the morning commute. However, with some snow/sleet on the ground, roads will be messy even at the coast. By 6am, the Providence area will likely be mainly sleet or freezing rain, but the area of plain rain will be advancing northward through the morning.
Super Microcast Computer Model forecast for 8:15am Monday, Dec 9.
Areas north and west of Route 295 especially won’t see that change over to all rain until later in the morning. The above image is for 8:15am on Monday and the area of remains in the higher elevations of RI into late morning. It won’t be until enough mild air works into the very lowest levels of the atmosphere that we see plain rain. Roads will likely remain messy and dangerous through the morning in communities like West Greenwich, W’rn Coventry, Foster, Glocester, Burrillville, N. Smithfield, Scituate, W’rn Johnston, Woonsocket, Lincoln and Cumberland. School delays are possible in all these areas because of bad roads.
Super Microcast Computer Model forecast for 3:00pm Monday, Dec 9.
By afternoon, rain should be the main precipitation type and the rain should end by evening. Roads, especially untreated roads, could remain slick through the afternoon and into the evening.
Here’s the timeline in a nutshell:
Storm Timeline for the Winter Storm on Dec. 8th/9th
We’ll have updates through the day on Sunday and into Monday morning. Be sure to check back!
–Meteorologist T.J. Del Santo