A potential winter storm remains on the table for this weekend across much of Maryland and Northern Virginia, but exactly what that looks like is still very much up in the air.
For several days, forecast models have been hinting at a storm system moving through the region this coming weekend. The bigger question is not just whether the storm arrives, but what type of precipitation comes with it. Depending on how the system evolves, outcomes could range from accumulating snow, to a messy wintry mix, to mostly rain. Because of those uncertainties, the National Weather Service has placed most of the region in a limited threat risk for snow and sleet on Sunday.
In plain terms, the atmosphere is setting up like a tug-of-war between cold air to the north and a strong storm system coming in from the south and west. High above the ground, there are multiple large weather systems spinning over eastern Canada and near New England. These systems can interact with each other, sometimes wobbling or shifting position in ways that are hard to predict. Where they end up matters because they can either help lock cold air in place or allow warmer air to push northward.
At the same time, another powerful system is developing in the southern part of the country. This system is expected to move eastward from the southern Plains on Saturday and toward the Carolinas by Sunday. As it does, it will try to pull warmer, wetter air northward into our area.
The key factor is timing. Cold air near the surface is expected to be retreating as the storm approaches. If that cold air hangs on long enough, parts of the region could see snow or sleet, especially at the start of the event. If warmer air moves in faster, precipitation would change to rain. There is also a middle-ground scenario where temperatures hover near freezing, leading to a mix of snow, sleet, and rain.
Another wildcard is the storm’s strength. A stronger system can cool the air as precipitation intensifies, which can briefly flip rain back to snow even if temperatures are marginal. That is one reason snow remains on the table despite recent warmer trends.
At this range, forecast models are still scattered, which is meteorologist-speak for not agreeing with each other. Some show a snowier outcome, others lean toward rain, and a few keep most of the heavier precipitation south of the area altogether.
For now, the takeaway is that a storm is possible this weekend, impacts are uncertain, and small shifts in the storm track or temperature profile could make a big difference locally. More clarity should emerge as the week goes on and the storm moves closer.
