Sleet May Cut Snow Totals as Precipitation Shifts North Toward Harrisburg

Sleet Threatens to Diminish Snow Accumulation in harrisburg

Harrisburg, Pennsylvania, residents should prepare for a potential shift in the upcoming winter weather, as forecasts now indicate the possibility of sleet impacting snowfall totals. The national Weather Service is closely monitoring a developing system that could bring a mix of precipitation to the region, perhaps reducing the amount of snow that accumulates.

Understanding the Impact of Sleet

Sleet, which forms when snow melts as it falls through a layer of warm air and then refreezes before reaching the ground, is less efficient at accumulating than snow. According to data from the National Oceanic and Atmospheric Administration (NOAA), sleet typically compacts more tightly than snow, resulting in lower measured depths for the same amount of precipitation. NOAA provides thorough resources on winter weather phenomena.

How Sleet Formation Affects Accumulation

The projected movement of warmer air aloft could cause precipitation to begin as snow, but rapidly transition to sleet as it descends. This transition, if it occurs, would significantly lower projected accumulation totals, especially in areas directly along the path of the warmer air.

The duration and intensity of the sleet will be crucial factors. Prolonged periods of sleet can effectively suppress snowfall and even lead to melting of existing snow cover. Areas experiencing a brief period of sleet may still see important snow accumulation,but the overall impact will be lessened.

Regional Forecast Breakdown

Current weather models anticipate the sleet will push northward, potentially impacting areas closest to Harrisburg. While the exact trajectory remains uncertain, residents should remain vigilant as the situation unfolds.The storm is expected to begin late tonight and continue through tomorrow afternoon.

Location	Potential Precipitation Type	Expected Impact
Harrisburg	Snow, transitioning to Sleet	Reduced Snow Accumulation
Areas North of Harrisburg	Primarily Snow	Higher Snow Accumulation Potential
Areas South of harrisburg	Rain and Sleet	Minimal Snow Accumulation

Preparing for Winter Weather

Irrespective of the exact precipitation type, it’s vital for residents to prepare for hazardous winter conditions. The Pennsylvania Department of Transportation (PennDOT) offers guidance on safe winter driving practices and road conditions. This includes ensuring vehicles are equipped with appropriate tires, having a well-stocked emergency kit, and allowing extra travel time.

In addition to transportation concerns, residents should also take precautions to protect themselves from the cold. The Centers for Disease Control and Prevention (CDC) (CDC) recommends dressing in layers, staying dry, and being aware of the signs of hypothermia and frostbite.

Are you prepared for a shift from snow to sleet? What steps will you take to ensure your safety during this winter weather event?

Stay tuned to Archyde.com for the latest updates and safety information as this weather system evolves. Share this article with your friends and family to help them prepare as well!

How will sleet affect snow totals in Harrisburg during the upcoming winter storm?

Sleet May Cut Snow Totals as Precipitation Shifts North Toward Harrisburg

The forecast for the upcoming winter storm impacting the Mid-atlantic region is becoming increasingly complex. While initial predictions pointed towards meaningful snowfall across central Pennsylvania, a developing pattern suggests a shift towards sleet, perhaps reducing overall accumulation, notably closer to Harrisburg. Understanding this change and its implications is crucial for residents preparing for the storm.

Understanding the Atmospheric Setup

The current system is driven by a potent combination of cold air entrenched over the northeast and a developing low-pressure system tracking eastward from the Ohio Valley. The critical factor determining precipitation type – snow versus sleet – lies in the temperature profile of the atmosphere.

* snow: Forms when temperatures remain at or below freezing throughout the atmospheric column.

* Sleet: Develops when a layer of warm air exists aloft,melting snowflakes into rain,which then refreezes as it falls through a shallow layer of cold air near the surface.

Recent model runs indicate a strengthening warm layer, increasing the likelihood of sleet formation, especially in areas south of the higher elevations. This is particularly concerning for areas expecting heavy, fluffy snow, as sleet is denser and packs differently.

Projected Impacts on Snowfall totals

The shift to sleet doesn’t necessarily mean no snow, but it does mean significantly lower accumulation in some areas. Here’s a breakdown of potential scenarios:

1. Harrisburg & Surrounding Areas: Originally forecast for 6-10 inches of snow, current projections suggest a mix of sleet and snow, potentially limiting totals to 3-6 inches. The timing of the changeover to sleet will be key. An earlier transition means less snow.
2. higher Elevations (e.g., near the Blue Mountain): These areas are more likely to remain cold enough for primarily snowfall, potentially still seeing 8-12 inches. however, even at higher elevations, a period of sleet is possible.
3. Southern Pennsylvania (Lancaster, York): A higher probability of a prolonged period of sleet, with snow accumulations likely remaining under 3 inches. Ice accumulation will be a greater concern in these areas.

the Difference Between Sleet and Freezing rain

It’s important to distinguish between sleet and freezing rain, as both involve ice but form differently and present diffrent hazards.

* Sleet: As described above, is rain that refreezes before hitting the ground. It bounces when it lands.

* Freezing Rain: Is rain that falls as liquid and freezes on contact with surfaces. This creates a dangerous glaze of ice.

While sleet can be slippery, freezing rain poses a far greater threat due to the weight of the ice and the potential for power outages. Current forecasts favor sleet over freezing rain for most of the Harrisburg area, but monitoring for changes is vital.

Travel Implications: What to Expect

Regardless of the exact precipitation type, travel conditions will be hazardous.

* Roads: Sleet and snow will make roads slick and dangerous. Bridges and overpasses will freeze first.

* Visibility: Reduced visibility due to falling precipitation.

* Power Outages: While sleet is less likely to cause widespread outages than freezing rain, the weight of accumulating sleet can still bring down tree limbs and power lines.

Practical Tips for Safe Travel:

* Avoid unneeded travel.

* If you must travel, slow down and increase yoru following distance.

* Ensure your vehicle is equipped with winter tires or all-season tires with sufficient tread.

* Carry a winter emergency kit including a flashlight, blankets, snacks, and a phone charger.

Ancient Precedent: The 2016 Mid-Atlantic Sleet storm

The winter of 2016 saw a similar scenario unfold across the Mid-Atlantic.A storm initially predicted to deliver significant snowfall transitioned to a mix of sleet and freezing rain, resulting in lower snow totals but widespread ice accumulation. This event caused numerous traffic accidents and power outages, highlighting the importance of accurate forecasting and preparedness. The National Weather Service documented over 300,000 power outages in Pennsylvania alone during that event, largely due to ice accumulation.

Staying Updated: Resources and Forecast Monitoring

The forecast remains fluid.Stay informed by monitoring these resources:

* National Weather Service (NWS): https://www.weather.gov/ – Provides official forecasts, warnings, and advisories.

* Local News Channels: Local television and radio stations will provide up-to-date coverage of the storm.

* Archyde.com Weather updates: We will continue to provide detailed analysis and updates as the storm evolves.

the key takeaway is that while snow is still possible, the increasing likelihood of sleet means a potential reduction in snowfall totals, particularly near Harrisburg. Preparedness and staying informed are crucial for navigating this evolving winter weather situation.