My Forecast For May 5-7
Unseasonably cold weather, for May, will continue into Friday. Any snow accumulations are expected to be above 4000 to 4500 feet and mainly restricted to highest peaks from the Smokies to Mount Rogers.
*Colder mountain valleys could drop into the 30s the next few nights, with frost possible if skies can become partly to mostly clear and winds light ( Friday AM and/or Saturday AM having better chances for partial clearing than Thursday AM ).
Overnight Into Thursday Morning
Colder. Chance of drizzle or light rain showers ( mixed at highest elevations ). Dense fog becoming freezing fog at highest elevations. WNW-NW winds 5-15 mph, with higher gusts, on mid-upper elevation mountain ridges-plateaus. Temperatures varying from upper 20s to lower 30s at the highest elevations in the High Knob Massif to the upper 30s to lower 40s. Wind chills in the 20s and 30s along mountain ridges, with 10s in gusts on the highest peaks ( some rime formation possible along the highest ridges-peaks ).
Mostly cloudy. Chance of rain showers, especially by late, mixed with snow at highest elevations. Local sleet or small hail possible at lower-middle elevations. Chilly for May. WNW to NW winds at 5 to 15 mph, with higher gusts. Temps varying from 30s across upper elevations to the 40s to around 50 degrees ( milder south toward the Tri-Cities ). Wind chills in the 20s and 30s.
Thursday Night Into Friday Morning
Chance of rain showers in the evening ( possibly mixed with snow on highest peaks ). Partly to mostly cloudy overnight with chance of a shower. WNW-NW winds 5-15 mph, with higher gusts, below 2700 feet. NW to N winds 10-20 mph, with higher gusts, along mountain ridges above 2700 feet. Temperatures varying from low-mid 30s to the low-middle 40s. Wind chills in the 20s and 30s, except 10s in gusts along highest ridges.
Mostly cloudy. Continued chilly. Chance of rain showers. Winds NW-NNW at 10-20 mph, with higher gusts, along middle-upper elevation ridges & plateaus. Temperatures varying from the 40s to mid-upper 50s. Wind chills in the 30s and 40s ( coldest at the highest elevations ). Warmer south toward the Tri-Cities.
Friday Night Into Saturday
Mostly cloudy during the evening. Chance of a showers. Then becoming partly cloudy overnight. WNW-NW winds 5-10 mph, with higher gusts, along mountain ridges and plateaus below 2700 feet. Winds WNW-NW 10-15 mph, with higher gusts, along mountain ridges above 2700 ft. Temperatures in the 40s to around 50 degrees, except dropping into the 30s in colder mountain valleys if skies become partly cloudy.
Showers & thunderstorms will become possible as warmer air returns this weekend, displacing the cold, Canadian air mass moving into the region Thursday.