198 FNUS74 KLZK 061047 FWSLZK Spot Forecast for Devalls Bluff Rx...The Nature Conservancy National Weather Service Little Rock AR 447 AM CST Wed Mar 6 2019 Forecast is based on ignition time of 0600 CST on March 06. If conditions become unrepresentative...contact the National Weather Service Immediately. Please contact our office at (501) 834-0308 and ask for the fire weather forecaster if you have any questions or concerns with this forecast. .DISCUSSION... Winds will largely be light and variable through much of the day. By the afternoon, they will have more of a southerly component, but are mostly expected to remain at or below 5 MPH. Expect little in the way of cloud cover through the day. 1700 ft mixing height temperature is forecast to be around 43 or 44 degrees, with a category day of 2. .TODAY... Max temperature.....26 at ignition...Max 43. Min humidity........68 percent at ignition...Min 39 percent. Chance of pcpn......0 percent. Transport winds.....Light winds. Stability class.....C. 20 Foot Winds.......Winds north at 4 mph at ignition...otherwise Light winds. Sky/weather.........Sunny (0-10 percent). Dispersion..........13. Haines Index........4 or low potential for large plume dominated fire growth at ignition...max 4. Mixing height (MSL).Becoming 3515 ft MSL. Mixing height (AGL).Becoming 3300 ft AGL. TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......CLR CLR CLR CLR CLR CLR CLR CLR MCR MCR MCR MCR Weather cov..... Weather type.... Tstm cov........ Temp............26 27 29 32 34 37 39 41 42 43 43 41 RH..............68 68 60 54 51 46 42 43 39 39 44 44 20 FT wind dir..N N NE NE E SE S S S S S S 20 FT wind spd..3 3 3 3 2 2 2 2 2 3 3 3 20 FT wind gust.5 5 5 5 4 4 4 4 4 5 5 5 Transp wind dir.N N N N N NW W W W W W SW Transp wind spd.13 9 7 5 3 3 5 5 6 7 8 9 Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 .TONIGHT... Min temperature.....Min 32. Max humidity........Max 78 percent. Chance of pcpn......0 percent. Transport winds.....Light winds becoming southeast around 5 mph. Stability class.....D. 20 Foot Winds.......Light winds becoming southeast around 5 mph. LVORI...............1. Sky/weather.........Clear (0-10 percent). Dispersion..........5 early in the evening. Haines Index........3 to 4 OR or very low potential for large plume dominated fire growth to or low potential for large plume dominated fire growth. TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky cover.......MCR CLR CLR CLR CLR CLR CLR CLR CLR MCR CLR CLR Weather cov..... Weather type.... Tstm cov........ Temp............40 38 36 35 34 34 34 33 33 33 32 32 RH..............49 52 58 63 68 67 70 71 72 73 74 78 20 FT wind dir..SE SE SE SE SE SE SE SE SE SE SE SE 20 FT wind spd..3 5 5 5 5 5 5 5 5 5 5 5 20 FT wind gust.5 6 6 6 6 6 6 6 6 6 6 6 Transp wind dir.SW SW SW SW SW SW SW SW SW SW SW SW Transp wind spd.10 12 14 15 16 17 17 17 17 17 17 17 Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 .THURSDAY... Max temperature.....Max 50. Min humidity........Min 54 percent. Chance of pcpn......20 percent. Transport winds.....South 6 to 9 mph. Stability class.....C. 20 Foot Winds.......South winds 6 to 9 mph. Sky/weather.........Mostly sunny (35-45 percent) then becoming mostly cloudy (80-90 percent). Slight chance of rain showers in the afternoon. Dispersion..........19 increasing to 33 in the late morning and afternoon. Haines Index........2 to 3 OR or very low potential for large plume dominated fire growth. Mixing height (MSL).Becoming 1066 ft MSL. Mixing height (AGL).Becoming 900 ft AGL. TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......MCR MCR MCR PC PC MC MC MC MC CDY CDY CDY Weather cov..... SCH SCH SCH SCH SCH SCH Weather type.... RW RW RW RW RW RW Tstm cov........ Temp............33 35 38 42 45 47 49 50 50 50 49 49 RH..............75 73 68 61 57 55 54 55 58 61 66 70 20 FT wind dir..SE SE SE SE S S S S S S S S 20 FT wind spd..6 7 7 7 7 8 8 8 9 9 9 9 20 FT wind gust. 8 10 10 10 10 11 11 11 11 Transp wind dir.SW SW S S S SW SW SW SW SW SW SW Transp wind spd.18 20 21 22 23 24 25 29 32 35 36 37 Chc of pcpn (%).10 10 10 10 10 10 20 20 20 20 20 20 $$ Forecaster...B Smith Requested by...Kyle Lapham Type of request...PRESCRIBED .TAG 1902408.0/LZK .DELDT 03/06/19 .EMAIL klapham@tnc.org