FNUS72 KFFC 120959 FWSFFC Spot Forecast for Lake Marvin...USFS National Weather Service Peachtree City GA 459 AM EST Fri Dec 12 2025 Forecast is based on ignition time of 1200 EST on December 10. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... Good morning! Dry and clear weather conditions are still expected at the ignition site today. No precipitation is anticipated through Saturday afternoon. Fog is not expected to be an issue this morning. Winds out of the southwest will remain sustained under 10 mph, however occasional gusts of 13 to 18 mph will be possible this afternoon. Relative humidity values at ignition time will be in the 70 to 80 percent range with lower values near 40 percent in the afternoon. Given the clear conditions, afternoon relative humidity may drop slightly below forecast, though should remain above 30 percent. Increasing moisture from the SW winds will bring relative humidity values back to over 90 percent late tonight into Saturday morning. No significant impacts to forecast conditions are expected due to the nearby lake given the southwest winds. Transport winds out of the west and southwest will be at 10 to 20 mph with mixing heights of 3-4kft this afternoon. Increasing moisture through tonight may pose a patchy fog risk going into tomorrow. Please reach out if you have any questions or concerns. .THURSDAY... CWR.................0 percent. Chance of thunder...0 percent. Max temperature.....Around 49. Min humidity........32 percent. Dewpoint............22. Wind (20 ft)........Northwest winds 5 to 8 mph becoming light. Mixing height.......3200 ft AGL. Transport winds.....Northwest 9 to 14 mph shifting to the west around 7 mph late in the afternoon. Smoke dispersal.....Poor (5100 knot-ft) early in the morning increasing to good (35700 knot-ft) in the afternoon. LVORI...............3. ADI.................8 early in the morning increasing to 50 in the afternoon. Pcpn amount.........0.00 inches. CEILING (KFT).......25. TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............35 33 31 34 34 37 41 43 45 46 46 46 Dewpoint........24 23 22 24 23 22 22 21 21 20 20 22 RH..............65 68 70 65 64 54 47 40 38 35 35 38 20 FT wind dir..NW NW NW NW NW NW NW NW W W W W 20 FT wind spd..6 8 5 7 6 5 5 5 5 5 5 3 20 FT wind gust.18 14 16 14 15 13 12 13 13 16 13 7 Mix hgt (kft)...0.6 0.7 0.7 1.7 1.9 2.3 2.6 2.9 3.1 3.2 2.8 1.1 Transp wind dir.NW N N N N N NW NW W W W W Transp wind spd.10 12 9 14 13 10 10 12 13 13 10 7 LVORI...........4 3 3 3 2 2 1 1 1 1 1 2 ADI.............11 8 10 30 29 32 32 40 47 50 35 9 Vrate kt-ft/1K..5 7 6 20 20 22 22 28 33 36 25 6 Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR Ceiling (kft)...25 25 25 25 25 25 25 25 25 25 25 25 $$ Forecaster...SMarlow Requested by...Jake Hauser Type of request...PRESCRIBED .TAG 2527383.0/FFC .DELDT 12/10/25 .FormatterVersion 2.0.0 .EMAIL jake.hauser@usda.gov