A cold front will move through North Georgia late this evening bringing a slight chance of showers, and then much cooler air for Friday. There is not a lot of available moisture along the front so rain totals will be limited to only a few hundredths of an inch, but what will be impressive is the temperature drop and the increase in winds by Friday.
Look for highs on Friday to remain in the mid to upper 40s with winds out of the northwest at 10-20 mph with gusts to near 30 mph. Saturday will be the best day of the weekend before the next system arrives from the southwest, tapping Gulf moisture and producing a much larger area of rain across the Southeast.
What we have to watch out for is the chance of some of that rain mixing with snow early Monday morning in the mountains as the system comes to an end. Colder air will sink south out of Tennessee, and if it catches up with the remaining moisture it is very likely that a rain/snow mix would develop. Good news is that the precip will be light so no major problems should be expected.
Behind that system we get one day (next Tuesday) to dry out before the next storm arrives once again out of the southwest along an active branch of the southern Jetstream. This one as well will bring a large area of rain to all of the Southeast. Both system have the potential to dump up to an inch of rain.
So all-in-all it looks like a return to the wet pattern that we experienced for much of January and December. The long range prediction from the Climate Prediction Center calls for equal chances here in the Southeast for rain, but my bet would be to count on another wet month in February.
A Winter Weather Advisory is in effect for the north Georgia mountains 4am to 7pm on Monday.
IMPACTS: Light rain will fall across the mountains tonight and may mix with snow at times early Monday morning and possibly early afternoon. A dusting to a half inch could accumulate in the higher elevations and with temperatures dropping to freezing or below Monday evening patches of black ice could develop on roadways. Use caution while driving Monday evening and Tuesday morning in the mountains.
ELSEWHERE: For the rest of north Georgia light to moderate rain showers can be expected through Monday morning with most areas only picking a few hundredths of an inch of rain. Temperatures will remain well above freezing so roadways will be fine. By Monday afternoon windy conditions will arrive with northwest winds of 10-20 mph and gusts at times to near 30.
Rain will arrive Friday with a chance of a wintry mix in the mountains.
ROUND 1: A large storm system will develop along the Gulf Coast and will spread rain north toward Georgia throughout the day Thursday. The rain will arrive in north Georgia by Friday morning and will continue until early on Saturday. At the onset Friday morning there may be a brief period of rain with mixing with snow and sleet in Towns, Union and Rabun County. It will be brief with a transition to all rain will as the morning progresses. No accumulations are expected. The next chance of a wintry mix will occur on the back end of the system Saturday morning. Gilmer, Fannin, Towns, Union, Rabun, Dawson, Lumpkin and White County all could see a light rain/snow mix before it ends. Again no accumulations are expected but watch for slick roads with temperatures near freezing. The rest of Saturday will be dry with sunshine returning by Sunday. Highs over the weekend will be in the upper 40s Saturday and low 50s Sunday.
ROUND 2: A fast moving Alberta Clipper system will approach north Georgia from Tennessee on Monday bringing with it limited moisture, but a slight chance for a few rain or snow showers. Right now it doesn’t look like it will be heavy enough for anything to stick, but temperatures Monday could be cold enough in the mountains for slick spots on the roadways, but the roads should be fine elsewhere. Once this system moves through sunny skies will return by Tuesday and Wednesday.
Sunny and mild weather to last just a few more days before colder air arrives by the end of the week.
TUESDAY & WEDNESDAY: Mostly sunny skies will continue through Wednesday along with above normal temperatures. Look for highs to be in the low 60s both days with overnight lows only dropping into the 40s. Normally our lows drop to near 34 with the normal high being 52. Not bad for mid-January!
THURSDAY & FRIDAY: A cold front will move through on Wednesday with the cooler air behind it reaching us on Thursday. Highs on Thursday and Friday will only climb into the low to mid 50s with overnight lows dropping into the mid to upper 30s.
RAIN CHANCES: Some moisture will return by Friday, but most of the computer models keep the bulk of the moisture to our south. We should get some light rain early on Friday and then again early on Saturday, but right now the amounts look very light. Depending on the timing some areas north of Atlanta could see a brief wintry mix, but right now that is just a slim possibility at best, and would not pose any problem if it did happen.
Showers will return briefly Thursday before the sunshine settles in for the weekend.
RAIN: An upper level disturbance moving out of the Plains will tap Gulf moisture which will lead to a few showers across the Southeast Thursday afternoon. The showers will develop across North Georgia during the afternoon and should be gone by the evening. Not everyone will see the rain and rain totals will be light.
SUNSHINE: Clearing will take place Thursday night as high pressure build in from the west. Sunny skies will return on Friday and will last through the weekend and into the following week. Expect temperatures to warm into the low 50s Friday with reading near 60 on Saturday. Except for a few minor fluctuations the highs will remain in the 50s with lows in the 30s.
Dense fog will remain across North Georgia through the night and into Tuesday morning.
IMPACTS: A Dense Fog Advisory is in effect until midnight, but may be extended into Tuesday morning. Visibility will be reduced to a quarter of a mile or less making travel difficult. In some areas visibility may be reduced to near zero at times. Use low beams when driving and make sure you reduce speed to compensate for others that may be having a hard time seeing in the fog. The fog will be slow to lift, but visibility should improve by 10am Tuesday morning.
RAIN: Light rain and drizzle will also accompany the fog overnight, and will be with us for most of the day on Tuesday. Rain totals will be light with most areas seeing only a few hundredths of an inch.
SUNSHINE: Sunny skies will return, but not until Friday and into the weekend. Along with the sunny skies temperatures will increase into the upper 50s to near 60. This pattern will last into the beginning of the following week.
The coldest air since last January is set to return this week.
TIMING: Arctic air that is right now sliding down out of Canada is poised to make it all the way to the Southeast by Wednesday and will be with us right through Friday. By the weekend slightly milder air will return along with a chance of showers late Sunday and next Monday.
HOW COLD: The coldest air since the major winter storm last January is set bring us temperatures that could stay below freezing for up to 42 hours starting Wednesday evening. Highs on Wednesday will occur around midday with the temperatures falling below 32 by the evening. By Thursday morning the low will drop into the low to mid-teens with highs Thursday afternoon barely getting back to freezing. Lows again will dip into the teens to near 20 Friday morning with the temperature not expected to get above 32 until sometime late in the morning or around noon on Friday.
IMPACTS: Remember pipes can freeze in this type of weather so make sure to remove garden hoses from outside faucets and cover them. Also open up cabinets under sinks to let heat warm the pipes, and also allow the faucet to drip. Under crawl spaces wrap any exposed pipe with pipe insulation.