Scientific Forecaster Discussion
000 FXUS62 KFFC 111430 AAB AFDFFC Area Forecast Discussion...UPDATED National Weather Service Peachtree City GA 930 AM EST Mon Dec 11 2017 .UPDATE... No changes to the forecast for today. Increased the winds some for Tuesday due to a rather strong pressure gradient with the next cold front. BDL && PREV DISCUSSION... /Issued 637 AM EST Mon Dec 11 2017/ SHORT TERM /Today through Tuesday/... Cool and dry conditions will continue through the short term. Weak high pressure over the state will give way to a dry cold front expected to move through the area Tuesday. For now we are still only expecting increased cloud cover with this frontal passage but the models continue to show deeper moisture increasing across north GA with every run. The models still keep the better moisture well north of the region but will continue to keep a close eye on how this next system develops over the next 24 hours. The good news with this frontal passage is it moves through the state during the day time hours Tuesday so if we do get any precip from it...it will be mainly in the form of rain. As for temps they will stay on the cool side with highs in the 40s and 50s and lows mainly in the 30s. 01 LONG TERM /Tuesday Night through Sunday/... No significant changes through the extended forecast period from previous forecast trends. Medium-range models continue to be in fairly good agreement through the period. Two mainly dry short waves and associated cold fronts sweep through the region during the workweek. Cold start to the period Tuesday night/Wednesday behind the first system. Models indicate temperatures should rebound quickly heading into the end of the workweek ahead of the next system Friday. Marginal moisture available with this late week system, and mainly confined to the southern and eastern portions of the forecast area. Much more vigorous system moves in at the end of the period. Much warmer and more moist air mass sweeps into the region with this system bringing much better chances for precipitation and minimizing any chances for wintry precipitation types. 20 && AVIATION... 12Z Update... VFR ceilings with no precipitation or restrictions to VSBYS expected. Winds will stay out of the W to SW at 10kt or less today and tonight. As winds shift to the NW by 12z Tuesday wind speeds will increase into the 10-15kt range gusting to 25kt through 18z Tue. //ATL Confidence...12Z Update... High confidence on all elements. 01 && .PRELIMINARY POINT TEMPS/POPS... Athens 55 37 49 26 / 0 0 0 5 Atlanta 53 38 46 27 / 0 0 0 0 Blairsville 51 31 40 20 / 0 5 5 5 Cartersville 53 35 44 25 / 0 0 0 5 Columbus 59 39 52 30 / 0 0 0 0 Gainesville 51 37 45 26 / 0 0 0 5 Macon 59 38 54 28 / 0 0 0 0 Rome 54 34 44 24 / 0 0 0 5 Peachtree City 56 37 48 26 / 0 0 0 0 Vidalia 58 40 58 32 / 0 0 0 0 && .FFC WATCHES/WARNINGS/ADVISORIES... NONE.