360 FNUS73 KDVN 211215 FWSDVN Spot Forecast for Williams Preserve RX...Johnson County Conservation National Weather Service Quad Cities IA/IL 715 AM CDT Wed Mar 21 2018 Forecast is based on ignition time of 0900 CDT on March 21. If conditions become unrepresentative...contact the National Weather Service Quad Cities at (563) 386-3815. .DISCUSSION... Cool northerly flow will continue over the area today, with winds generally under 15 mph through the day. Rain and snow continue to forecast for Friday and Saturday in this region. The Grassland Fire Danger Index -GFDI- does not account for precipitation that occurs or any snow on the ground. Please make appropriate adjustments. .TODAY... Sky/weather.........Sunny (5-15 percent). Chance of pcpn......0 percent. LAL.................1. Begin/end of pcpn...N/A. Max temperature.....Around 45. Min humidity........39 percent. Apparent temp.......19. Eye level winds.....Northwest winds 5 to 6 mph. Wind shift..........N/A. Wind (20 ft)........Northwest winds 5 to 6 mph. Mixing height.......500-2200 ft AGL increasing to 3100-5000 ft AGL in the late morning and afternoon. Transport winds.....Northwest 8 to 15 mph. Haines Index........2 to 4 or very low potential for large plume dominated fire growth to or low potential for large plume dominated fire growth. GFDI..........Low. TIME (CDT) 9 AM 11 AM 1 PM 3 PM 5 PM Sky (%).........10 10 9 11 13 Weather cov..... Weather type....NONE NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).0 0 0 0 0 Temp............30 36 40 44 44 RH..............58 43 41 39 45 Aparnt tmp (F)..23 30 35 39 40 20 ft wind......N 5 N 5 N 5 NW 5 NW 5 20 ft wind gust. 10 10 10 Eye level wind..N 4 N 4 N 4 NW 4 NW 4 Eye lvl wnd gst. 10 10 10 Mix hgt (ft)....2200 3500 4300 4800 4600 Transport wind..N 14 N 15 N 12 NW 10 NW 9 Haines index....3 3 4 3 3 .TONIGHT... Sky/weather.........Partly cloudy (20-30 percent). Chance of pcpn......0 percent. LAL.................1. Begin/end of pcpn...N/A. Min temperature.....Around 29. Max humidity........81 percent. Apparent temp.......26. Eye level winds.....Northwest winds around 5 mph early in the evening becoming light. Wind shift..........N/A. Wind (20 ft)........Northwest winds around 5 mph early in the evening becoming light. Mixing height.......2700-4300 ft AGL decreasing to 300-1500 ft AGL in the late evening and overnight. Transport winds.....North 1 to 9 mph. Haines Index........2 to 4 or very low potential for large plume dominated fire growth to or low potential for large plume dominated fire growth. GFDI..........Low. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........16 21 27 28 29 29 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 Temp............43 39 36 34 32 31 RH..............47 57 64 69 75 75 Aparnt tmp (F)..39 37 36 34 32 28 20 ft wind......NW 4 N 2 N 2 NW 2 W 2 W 2 20 ft wind gust.5 5 5 Eye level wind..NW 3 N 2 N 1 NW 1 W 1 W 2 Eye lvl wnd gst.5 5 5 Mix hgt (ft)....4300 2700 300 300 300 300 Transport wind..NW 9 NW 6 N 1 NW 1 NW 2 N 3 Haines index....2 2 3 3 3 4 .THURSDAY... Sky/weather.........Partly sunny (55-65 percent). Slight chance of rain in the afternoon. Chance of pcpn......20 percent. LAL.................1. Begin/end of pcpn...N/A. Max temperature.....Around 50. Min humidity........52 percent. Apparent temp.......25. Eye level winds.....Light winds becoming south around 5 mph in the afternoon. Wind shift..........N/A. Wind (20 ft)........Light winds becoming south around 5 mph in the afternoon. Mixing height.......300-2200 ft AGL increasing to 2100-3500 ft AGL in the late morning and afternoon. Transport winds.....East 2 to 3 mph shifting to the south 3 to 5 mph in the afternoon. Haines Index........3 to 4 or very low potential for large plume dominated fire growth to or low potential for large plume dominated fire growth. GFDI..........Low. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........46 50 61 69 72 72 Weather cov..... S CHC S CHC Weather type....NONE NONE NONE NONE RAIN RAIN Tstm cov........ Chc of pcpn (%).0 10 10 10 20 20 Temp............29 32 40 45 49 50 RH..............81 75 59 55 52 52 Aparnt tmp (F)..25 29 37 42 47 48 20 ft wind......S 2 SE 2 SE 3 S 4 S 4 S 4 20 ft wind gust.5 5 5 5 5 5 Eye level wind..S 2 SE 2 SE 2 S 3 S 3 S 3 Eye lvl wnd gst.5 5 5 5 5 5 Mix hgt (ft)....300 1200 3200 3400 3200 2700 Transport wind..NE 3 NE 3 NE 2 S 3 S 5 S 5 Haines index....3 3 4 3 3 4 $$ Forecaster...Speck Requested by...Dave Wehde Type of request...Prescribed .TAG 1804643.0/DVN