Spot Forecast
Issued by NWS Atlanta, GA
Issued by NWS Atlanta, GA
111 FNUS72 KFFC 302018 FWSFFC Spot Forecast for Blackjack Crossing West Unit...The Nature Conservancy National Weather Service Peachtree City GA 418 PM EDT Tue Apr 30 2024 Forecast is based on ignition time of 1607 EDT on April 30. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... Dry conditions are expected for the remainder of the afternoon and into tomorrow. Patchy fog is possible early Wednesday morning. Surface winds on Wednesday will be out of the NW early in the morning but shift to a more north or northeast direction by mid to late morning. However, speeds will be very light and generally average 3-5 mph or less. For transport winds, the direction will be very similar to the surface component. Transport wind speeds from mid morning through the early afternoon will likely a average 5 to 7 mph, but drop off to less than 5 mph by the late afternoon. .REST OF TODAY... Sky/weather.........Mostly sunny (40-50 percent). Showers likely and slight chance of thunderstorms. CWR.................60 percent. LAL.................3. Max temperature.....Around 82. Min humidity........47 percent. Dewpoint............59. Wind (20 ft)........West winds 6 to 7 mph. Gusty and erratic winds expected near thunderstorms. Mixing height.......4600 ft AGL. Transport winds.....Southwest 8 to 9 mph. Smoke dispersal.....Good (30200 knot-ft). LVORI...............1. ADI.................31 to 38. Haines Index........4 or low potential for large plume dominated fire growth. Pcpn amount.........0.09 inches. CEILING (KFT).......5.0 increasing to 7.0 late in the afternoon. TIME (EDT) 4PM 5PM Sky (%).........44 44 Weather cov.....LKY LKY Weather type....RW RW Tstm cov........SCH SCH CWR.............60 60 LAL.............3 3 Temp............80 79 Dewpoint........59 60 RH..............49 52 20 FT wind dir..W W 20 FT wind spd..7 6 20 FT wind gust.12 12 Mix hgt (kft)...4.6 4.4 Transp wind dir.SW SW Transp wind spd.9 8 LVORI...........1 1 ADI.............38 31 Haines index....4 4 Vrate kt-ft/1K..37 30 Ventrate Cat....PR PR Ceiling (kft)...5.0 7.0 .TONIGHT... Sky/weather.........Partly cloudy (25-35 percent). Chance of showers and slight chance of thunderstorms early in the evening. Patchy fog early in the morning. CWR.................40 percent decreasing to 30 percent early in the evening, then decreasing to 10 percent early in the evening. LAL.................3 until 1900, then 2 until 2000, then 1. Min temperature.....Around 61. Max humidity........99 percent. Dewpoint............62. Wind (20 ft)........West winds around 5 mph becoming light. Gusty and erratic winds expected near thunderstorms early in the evening. Mixing height.......200 ft AGL. Transport winds.....West 3 to 7 mph shifting to the northwest around 3 mph after 3 am. Smoke dispersal.....Fair (22800 knot-ft) early in the evening decreasing to poor (500 knot-ft) late in the night. LVORI...............6. ADI.................1 to 18. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. Pcpn amount.........0.09 inches. CEILING (KFT).......9.0 increasing to 15 in the evening and overnight, then decreasing to 12 overnight decreasing to 8.0 after 3 am decreasing to 4.0 decreasing to 1.8 early in the morning. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........47 30 15 22 30 33 Weather cov.....CHANCE Weather type....RNSHWR NONE NONE NONE NONE NONE Tstm cov........S CHC CWR.............40 10 10 10 0 0 LAL.............3 1 1 1 1 1 Temp............79 75 69 66 65 64 Dewpoint........61 63 63 63 63 62 RH..............55 66 80 88 91 95 20 ft wind......W 5 W 2 W 3 W 2 SW 2 NW 2 20 ft wind gust.9 6 5 3 3 3 Mix hgt (ft)....2300 200 200 200 200 200 Transport wind..SW 7 W 3 W 3 W 3 W 3 W 3 LVORI...........2 3 5 6 7 9 ADI.............18 2 2 1 1 1 Haines index....4 4 4 3 3 3 Vrate kt-ft/1K..23 1 1 1 1 1 Ventrate Cat....POOR POOR POOR POOR POOR POOR Ceiling (kft)...9.0 15 15 15 12 4.0 .WEDNESDAY... Sky/weather.........Mostly sunny (25-35 percent). Patchy fog early in the morning. CWR.................0 percent. LAL.................1. Max temperature.....Around 87. Min humidity........35 percent. Dewpoint............62 decreasing to 56 late in the afternoon. Wind (20 ft)........Light winds becoming north around 5 mph late in the morning, then becoming light late in the afternoon. Mixing height.......7100 ft AGL. Transport winds.....Northwest 2 to 5 mph shifting to the northeast 3 to 8 mph in the late morning and afternoon. Smoke dispersal.....Poor (500 knot-ft) early in the morning increasing to fair (25600 knot-ft) in the afternoon. LVORI...............5. ADI.................1 to 41. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. Pcpn amount.........0.00 inches. CEILING (KFT).......5.0 increasing to 12 early in the morning, then increasing to 15 early in the morning increasing to 20 late in the morning decreasing to 15 decreasing to 12 early in the afternoon increasing to 15 increasing to 20 late in the afternoon increasing to 25. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........49 45 21 11 15 25 Weather cov.....PATCHY PATCHY Weather type....FOG FOG NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 0 0 LAL.............1 1 1 1 1 1 Temp............64 64 72 80 83 85 Dewpoint........63 64 64 62 58 56 RH..............96 99 75 55 42 37 20 ft wind......NW 2 NW 1 N 3 N 5 N 5 N 3 20 ft wind gust.3 2 6 8 8 7 Mix hgt (ft)....200 200 2500 4000 6400 7000 Transport wind..NW 2 NW 2 N 7 NE 7 N 5 NE 3 LVORI...........9 8 3 1 1 1 ADI.............1 2 21 37 35 33 Haines index....3 3 3 3 4 4 Vrate kt-ft/1K..1 1 17 23 26 25 Ventrate Cat....POOR POOR POOR POOR POOR POOR Ceiling (kft)...5.0 15 20 20 12 20 $$ Forecaster...NListemaa Requested by...Mike Thompson Type of request...PRESCRIBED .TAG 2412830.0/FFC .DELDT 04/30/24 .FormatterVersion 2.0.0 .EMAIL michael.thompson@tnc.org