Residents across the region should prepare for a major winter weather event set to bring heavy snow, strong winds, and frigid temperatures. Higher elevations are forecasted to bear the brunt of the storm beginning late Wednesday and continuing into Thursday. Meanwhile, the Tri-Cities Metro area could see light snow accumulations, and valley regions are expected to experience snow showers.
Low-Pressure System to Intensify, Bringing Severe Conditions
Forecasters are closely monitoring a low-pressure system that is expected to intensify as it moves into the area Wednesday night through Thursday morning, potentially reaching pressures below 990mb. This intensification will generate a powerful wind event, impacting higher elevations and select valley locations. According to current model projections, the storm will develop into a prolonged northwest (NW) flow event lasting up to 24 hours. This flow is anticipated to produce heavy and blowing snow across mountainous areas, while valleys will experience intermittent snow showers.
Dangerous Conditions in the Mountains
The combination of heavy snow, strong winds, and a sharp drop in temperatures is likely to create dangerous conditions, particularly for individuals in mountainous regions. Officials are warning that those without adequate shelter could face life-threatening conditions through Saturday as the storm lingers. The harsh winter weather may also lead to hazardous travel and other disruptions.
Factors That Could Influence Snow Accumulation
Meteorologists caution that a potential limiting factor for snowfall accumulation in some areas is the delayed transition to colder temperatures caused by mountain wave activity. This could slow the change from rain or mixed precipitation to snow, reducing total snowfall amounts for some locations.
Strong Winds and Wind Chill Hazards
Strong gusty winds are expected to accompany the snow, with peak gusts of 50-60 MPH or higher in higher elevation areas. These winds will cause blowing and drifting snow, drastically reducing visibility and making travel treacherous. The combination of strong winds and cold air will also lead to dangerously low wind chill values. Individuals caught outdoors without proper shelter or winter clothing risk exposure to extreme wind chill levels, which could lead to frostbite or hypothermia within minutes.
