Tuesday, January 16, 2018 10 AM Weather Forecast Office Peachtree City, GA Disclaimer: The Information Contained within this Briefing is Time Sensitive, and Could Affect its Validity as the Date/Time Moves Away from the Briefing Creation Date/Time.
Highlights DANGEROUSLY COLD WIND CHILLS TONIGHT WEDNESDAY Light snow expected across much of north/central GA beginning around midday across far NW Georgia expanding south and east through afternoon and evening hours Up to inch generall e pected across the area Locally higher amounts in the mountains of north GA Will have to monitor potentially higher amounts TONIGHT along I-85 south of ATL Impacts: Bitterly cold wind chills (sub-zero values possible along & north/west of I-85) Icy roads due to snow & initial melting tonight into Wed AM Prolonged Cold sub-freezing temperatures expected through Thurs AM
Current Conditions 930 AM Tuesday Temps falling rapidly with the precip Teens/ s Precip almost exclusively snow Little melting with the precip noted in AL/MS
Expected Snow Accumulation
Winter Weather Advisory 12 PM Tue- 7 AM Wed Amounts: Up to 1 with locally higher amounts. Rest of Area: 5 PM Tue- 7 AM Wed Impacts: Hazardous travel conditions from snow(ice) on roads and blowing snow as well as dangerously cold wind chills.
Timing Tuesday *subject to change
Timing Tuesday Evening *subject to change
Timing Tuesday Overnight *subject to change
Timing Wednesday Morning *subject to change
Lows Tonight/Wed AM Arctic cold behind the front Single digits in far north Teens for rest of north & west central Gusty NW winds will result in dangerous wind chills
Dangerous Wind Chills Wed. AM Min Wind Chill Strong NW winds behind front generally 15 mph gusting 20 mph Wind Chill Advisory Values: As cold as -10 in mountains 0-5 rest of north GA/west central Advisory Timing: Most Areas: 9 PM tonight 1 PM Wed. Far Northeast: 9 PM tonight 8 AM Thurs.
High Temps Wednesday Little to no melting expected (esp true for north Georgia) Black ice potential Wednesday night (depending on accums)
Forecast Notes and Uncertainties Will we get enhancement to the south? How much does downsloping reduce precip I-85 corridor/ne GA Model A Model B Additional support comes in from southwest To re-establish the band of snow
Forecast Notes and Uncertainties Will we get enhancement to the south? How much does downsloping reduce precip I-85 corridor/ne GA Model C very short term model runs through 1AM Can see some enhancement toward the end of this loop across AL Could allow for totals to increase South
Hours Below Freezing 48 hour period 1PM Tue 1PM Thu With very cold temps expected the next 48 hours including low wind chills: Potential for pipes freezing/bursting increases Any precipitation on roads may remain
Summary DANGEROUSLY COLD WIND CHILLS TONIGHT WEDNESDAY Light snow expected across much of north/central GA beginning around midday across far NW Georgia expanding south and east through afternoon and evening hours Up to inch generall e pected across the area Locally higher amounts in the mountains of north GA Will have to monitor potentially higher amounts TONIGHT along I-85 south of ATL Impacts: Bitterly cold wind chills (sub-zero values possible along & north/west of I-85) Icy roads due to snow & initial melting tonight into Wed AM Prolonged Cold sub-freezing temperatures expected through Thurs AM
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