Winter Storm Update: Confidence Increasing In Significant Weekend Winter Storm; Fine Details Still Uncertain

Confidence has increased that a significant winter storm may impact the region this weekend, particularly from Saturday through Sunday. While forecast confidence has improved regarding impacts, uncertainty remains high regarding precipitation type, which is typical for Southeast winter storms.

Key Messages

1. Confidence Increasing in a Significant Winter Storm

Confidence has increased today that a significant winter storm will affect the area Saturday through Sunday. This means impactful amounts of snow, sleet, or freezing rain are possible, though the exact precipitation type is still being worked out. The farther north you are, the better the chance this event ends up being primarily snow, while areas farther south may see more mixed or icy precipitation.

2. Preparations Should Begin

Now is the time to begin preparing for the potential of a significant winter weather event starting Saturday morning. Travel disruptions, hazardous road conditions, and possible power outages are all concerns depending on how this system evolves.

3. Impacts May Linger Into Early Next Week

Very cold air will move in behind this system, meaning any snow or ice that accumulates will melt very slowly. Even after precipitation ends, lingering travel and infrastructure impacts may continue into Sunday and Monday.

Forecast Discussion

A Minor System on Friday

Before the main system arrives, a weak disturbance (shortwave) will move through the region on Friday. At the surface, the frontal boundary from Thursday will be slowly sliding south of the area. A weak wave of low pressure may develop along this front, providing enough moisture and lift for light precipitation.

At this time, any precipitation associated with this feature should be light and mainly rain, with a rain/snow mix possible at higher elevations. No significant impacts are expected with this system.

The Main Event: Saturday Through Early Sunday

The primary concern begins Friday night and continues through Saturday into early Sunday (timing likely will need to be adjusted as data becomes more in line).

A northern-stream shortwave will dive into the central United States on Saturday, leading to lowering heights across the eastern U.S. As this system interacts with moisture to the south, a Miller A-type surface low is expected to develop and track south of the area.

As this occurs:

• Moisture and lift increase Friday night into Saturday
• Widespread precipitation develops sometime Saturday, fine timing details to be worked out.
• Precipitation should taper off on Sunday

Model agreement on timing is fairly good for this range, but differences in storm track and cold air depth remain significant and will ultimately determine precipitation type.

Snow vs. Ice: Why Confidence Is Still Medium

Small changes in storm track and temperature profiles will have large impacts on what type of winter weather we see:

• GFS (American model): Farther south track with deeper cold air, favoring mostly snow, especially across North Carolina.
• Canadian model: Farther north track with shallower cold air, favoring more sleet and freezing rain, particularly across NE Georgia and the SC Upstate.
• GEFS Ensemble Mean: A mixed solution, with more snow favored across North Carolina and more sleet/freezing rain farther south.
• Canadian Ensemble Mean: Similar to its operational model but with slightly more snow extending into North Carolina.
• NBM: Indicates roughly a 30% chance of warning-level snow across North Carolina and a 30% chance of warning-level freezing rain across NE Georgia and the Upstate.

Recent ECMWF guidance and its ensemble mean continue to show a north–south split, reinforcing the uncertainty in precipitation type.

Bottom Line

• ✔ Confidence is increasing in a significant winter storm this weekend
• ❌ Confidence remains low on the exact precipitation type and totals
• ⚠ Snow, sleet, freezing rain, or a combination remains possible
• 📊 This is a forecast where trends matter more than exact numbers

We will continue monitoring guidance closely and will provide updates as confidence improves. Changes are likely — this forecast is still evolving.