A rather dramatic turnaround in South Plains weather will begin Wednesday morning, but will be most notable beginning Wednesday evening as a cold north wind brings plummeting temperatures and an increasing chance of light wintry showers.
While this storm will be moderate Wednesday as it moves south into West Texas, it is generating wind-blown heavy snow in the northern Rockies and northern Plains with temperatures that range from 10 degrees to 15 degrees.
Thursday is going to be windy and very cold across the South Plains. There will be a light wintry mix, possibly including freezing rain, sleet, and snow. Hazardous road conditions may develop by Thursday morning. Wind chill readings will likely be in the single digits and Thursday night may drop to near zero. Snow, generally light, is likely Thursday night and Friday morning.
This next cold spell may not be quite as long as the one which began about 12 days ago, but it will be colder. This may be some of our coldest early December weather in decades. We may see high temperatures that run about 30 degrees below the average for the time of year. However, it appears the drop from Tuesday's high to Saturday morning's low may be greater than 60 degrees.
The potential for wintry precipitation is high. Rain, mostly light, may begin Wednesday night. As the cold air deepens and temperatures continue to fall into Thursday, there will be an increasing likelihood of a wintry mix. This will possibly create some icy areas over the northern KCBD viewing area.
Snow is a possibility by late Thursday, with accumulating snow possible Thursday night and Friday morning.
Based on information available late Wednesday morning, it looks like snow amounts of roughly 1 to 2 inches for Lubbock and 2 to 3 inches over the northern viewing area are possible. If snow bands develop, and some are indicated by our in-house Microcast model (which we run in our First Alert Forecast Center four times each day), localized heavier amounts will be possible. The forecast, including these forecast amounts, may change, so watch for the latest forecast and also for weather advisories, watches and updates that may be issued.
There may be accumulating ice before the snow, and very poor road conditions are a growing concern, especially late Thursday through Friday.