ALERT Continues For Hazardous Conditions Into Wednesday Morning With Unseasonable Cold and Slick Roads ( Patchy snow on main roads, widespread snow on secondary roads )
Former Alert
ALERT For Hazardous Road Conditions Late Monday Into Tuesday Morning, Especially On Secondary Roads At Middle To Upper Elevations
Much colder air will pour into the mountain area Monday afternoon into Tuesday, with bitter wind chills and a prolonged period of below freezing air temperatures expected ( Monday into Thursday ) at middle to upper elevations.
Rain showers will change to snow showers-flurries Monday afternoon, with accumulating snow levels dropping from upper elevations into middle-lower elevations by late Monday into Monday night.
*A Snow Squall potential will exist by later Tuesday into Tuesday evening, with bursts of intense snow becoming possible. An alert for hazardous travel conditions may be needed.
*A prolonged rime formation event is expected at upper elevations across the High Knob Massif starting Monday afternoon and extending into the predawn to morning hours of Wednesday ( November 28 ).
*Strong & gusty SW-WSW winds are expected at mid-upper elevations late Thursday into Friday as milder air pushes into the mountain area ( sensible warming will be offset by increased wind chills ).
Mountain Area Forecast Details
Overnight Into Monday Morning
Windy with rain showers. A period of downpours possible. Winds S-SW at 10-20 mph, with higher gusts, at elevations below 3000 feet. S-SW winds 15-30 mph, with higher gusts, on mountain ridges above 3000 feet. Widespread temps in the 40s, with 30s at high elevations toward morning. Dense fog ( orographic clouds ) at upper elevations. Wind chills dropping into the 20s & 30s ( coldest highest elevations ) into morning. Light winds in sheltered valleys will give way to strong wind gusts into morning.
Mid-Morning Monday Through The Afternoon
Windy. Turning much colder. Rain showers changing to snow showers & flurries. Low clouds. Riming developing at upper elevations. Winds WSW to WNW at 10-25 mph, with higher gusts. Temperatures falling through the 30s at low-middle elevations and through the 20s at upper elevations. Wind chills dropping into the 20s & 10s, except single digits to near 0 degrees at high elevations by late.
Monday Night Into Tuesday Morning
Snow showers & flurries. Windy & unseasonably cold. Winds W-NW at 5-15 mph, with higher gusts, below 2700 feet. W-NW winds 10-20 mph, with higher gusts, above 2700 feet. Temperatures dropping into the mid 10s to the middle 20s ( coldest at highest elevations ). Wind chills in 10s, except single digits above and below zero at the upper elevations. Riming at upper elevations.
Tuesday Afternoon-Evening
Cloudy with a chance of snow showers-flurries. Local snow squalls becoming possible ( bursts of intense snow ). Winds W-WNW at 10-20 mph, with higher gusts. Temperatures in the 20s to near 30 degrees at lower-middle elevations along and north of the High Knob Massif-Tennessee Valley Divide and in the 10s to lower 20s at upper elevations. Wind chills in the 10s to lower 20s, except single digits to low 10s at the upper elevations. Riming at high elevations.
Overnight Into Wednesday Morning
Snow showers-flurries and light snow. Unseasonably cold. WNW-NW winds 5-15 mph with some higher gusts. Temps varying from single digits at high elevations to the 10s to near 20 degrees. Wind chills in single digits to low 10s at lower-middle elevations and 0 to -15 below zero at upper elevations ( coldest in gusts at highest elevations ).
Mid-Morning Wednesday Through The Afternoon
Flurries ending. Becoming partly to mostly sunny. Cold. Some increase in high clouds possible by late. W to WNW winds at 5-10 mph with some higher gusts. Temperatures varying from lower 20s to the lower 30s ( coldest at the highest elevations ). Wind chills varying from the 20s at low-middle elevations to the 10s ( single digits in gusts on highest peaks ).