####018008474#### FNUS73 KJKL 181000 FWSJKL Spot Forecast for Seminary Branch...USFS National Weather Service Jackson KY 600 AM EDT Thu Apr 18 2024 Forecast is based on forecast start time of 0600 EDT on April 18. If conditions become unrepresentative...contact the National Weather Service. Please contact our office if you have questions or concerns with this forecast. .DISCUSSION...Well above normal temperatures will be in place one more day, today, with highs in the lower 80s. Look for dry weather into the late evening for the area with humidity bottoming out near 30 percent at the site during the afternoon with south to southwest winds around 10 mph or less. A more potent low pressure system will then track into the Ohio Valley this evening and through the night, sending a cold front across eastern Kentucky and bringing much higher chance for showers and thunderstorms. The front will move south and east of the area on Friday with rain chances ending from west to east by evening. .TODAY... Sky/weather.........Mostly sunny (35-45 percent). Chance of pcpn......0 percent. LAL.................1. Max temperature.....Around 84. Min humidity........30 percent. Dewpoint............59 decreasing to 51. Max apparent temp...82. Wind (20 ft)........Light winds becoming southwest around 5 mph late in the afternoon. Ridgetop wind.......Southwest 2 to 7 mph. Mixing height.......5100 ft AGL. Transport winds.....West 3 to 8 mph. Vent Rate...........Poor (3800 knot-ft) increasing to poor (14700 knot-ft) late in the morning. LVORI...............4. ADI.................3 to 27. Haines Index........4 to 5 or low to moderate potential for large plume dominated fire growth. TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........73 66 60 58 36 26 15 20 15 11 18 23 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............63 61 63 65 67 70 74 77 80 82 82 84 Dewpoint........61 60 61 61 60 60 58 57 56 54 52 51 RH..............93 97 93 87 78 71 57 50 44 38 35 32 Aparnt tmp (F)..63 61 63 65 67 70 74 77 80 81 81 82 20 FT wind dir..SW SW W W W SW SW SW SW SW SW S 20 FT wind spd..1 1 1 1 3 5 5 5 6 6 6 6 20 FT wind gust.7 7 7 6 7 8 8 7 8 9 9 9 Ridge wind dir..SW SW W W W SW SW SW SW SW SW S Ridge wind spd..2 2 2 2 5 6 6 6 7 7 7 7 Mix hgt (kft)...0.6 0.8 1.0 1.3 2.1 2.5 2.8 3.6 4.0 4.3 4.8 5.1 Transp wind dir.W W W W W W W W W W SW SW Transp wind spd.7 8 8 8 8 8 7 6 5 3 3 3 LVORI...........6 6 5 4 3 3 2 2 2 2 2 2 ADI.............3 9 10 15 23 26 26 27 23 21 22 22 Haines index....4 5 5 5 5 5 5 5 5 5 5 4 Vrate kt-ft/1K..4 6 7 10 15 17 17 18 16 15 15 15 Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR .TONIGHT... Sky/weather.........Mostly clear (20-30 percent) then becoming mostly cloudy (80-90 percent). Showers and a chance of thunderstorms overnight. Chance of pcpn......90 percent. LAL.................1 until 0100, then 2 until 0200, then 3. Min temperature.....Around 62. Max humidity........93 percent. Dewpoint............53 increasing to 58 after 3 am. Max apparent temp...82. Wind (20 ft)........Light winds becoming southwest around 5 mph late. Gusty and erratic winds expected near thunderstorms. Ridgetop wind.......South 3 to 7 mph shifting to the west around 7 mph late. Mixing height.......300 ft AGL. Transport winds.....South 3 to 7 mph. Vent Rate...........Poor (1000 knot-ft). LVORI...............4. ADI.................1 to 16. Haines Index........3 to 5 or very low to moderate potential for large plume dominated fire growth. TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........16 11 27 41 87 100 Weather cov..... CHANCE DEFNTE Weather type....NONE NONE NONE NONE RNSHWR RNSHWR Tstm cov........ CHANCE CHANCE Chc of pcpn (%).0 0 0 10 50 90 LAL.............1 1 1 1 3 3 Temp............83 77 72 68 66 64 Dewpoint........52 53 53 53 55 58 RH..............34 43 51 59 68 81 Aparnt tmp (F)..82 77 72 68 66 64 20 ft wind......S 5 SE 6 S 5 S 2 SW 5 SW 6 20 ft wind gust.10 12 10 9 13 13 Ridgetop wind...S 6 SE 7 S 6 S 3 SW 6 SW 7 Mix hgt (ft)....3900 300 300 300 300 400 Transport wind..S 3 SE 3 S 6 S 7 S 7 S 7 LVORI...........2 2 2 3 3 4 ADI.............16 2 3 3 5 5 Haines index....3 3 5 5 3 3 Vrate kt-ft/1K..11 1 2 2 2 2 Ventrate Cat....POOR POOR POOR POOR POOR POOR .FRIDAY... Sky/weather.........Cloudy (85-95 percent). Showers in the morning. Chance of thunderstorms through the day. Chance of showers in the afternoon. Chance of pcpn......80 percent. LAL.................3 until 1600, then 2. Max temperature.....Around 71. Min humidity........65 percent. Dewpoint............60 decreasing to 56 late in the afternoon. Max apparent temp...68. Wind (20 ft)........Southwest winds 5 to 6 mph shifting to the northwest 6 to 7 mph late in the afternoon. Gusty and erratic winds expected near thunderstorms. Ridgetop wind.......Southwest 7 to 8 mph shifting to the northwest 8 to 9 mph in the afternoon. Mixing height.......2400 ft AGL. Transport winds.....South 1 to 10 mph shifting to the west around 15 mph late in the morning, then shifting to the northwest in the afternoon. Vent Rate...........Poor (300 knot-ft) increasing to marginal (29400 knot-ft) in the afternoon. LVORI...............5. ADI.................1 to 40. Haines Index........2 to 3 or very low potential for large plume dominated fire growth. TIME (EDT) 6 AM 9 AM NOON 3 PM Sky (%).........100 80 92 82 Weather cov.....DEFNTE LIKELY CHANCE CHANCE Weather type....RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........CHANCE CHANCE CHANCE CHANCE Chc of pcpn (%).80 60 50 30 LAL.............3 3 3 3 Temp............62 64 67 68 Dewpoint........60 61 62 59 RH..............93 90 84 73 Aparnt tmp (F)..62 64 67 68 20 FT wind......SW 6G12 SW 6G10 W 7G13 NW 7G13 Ridgetop wind...SW 7 SW 7 W 8 NW 8 Mix hgt (ft)....400 800 2200 2100 Transport wind..S 5 S 5 W 15 NW 12 LVORI...........6 6 4 3 ADI.............4 4 40 28 Haines index....3 3 3 3 Vrate kt-ft/1K..2 4 29 20 Ventrate Cat....POOR POOR POOR POOR $$ Forecaster...GREIF Requested by...Michael Trent Type of request...WILDFIRE .TAG 2411203.3/JKL .DELDT 04/18/24 .FormatterVersion 2.0.0 .EMAIL kykic@firenet.gov,eddie.walden@usda.gov