####018006770#### FNUS73 KBIS 231447 FWSBIS Spot Forecast for Maclean Bottoms Prescribed burn...ND Game and Fish National Weather Service Bismarck ND 947 AM CDT Tue Apr 23 2024 Forecast is based on ignition time of 0800 CDT on April 24. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... Overnight recoveries tonight will be good allowing some moisture to return by Wednesday morning. Wednesday afternoon minimum relative humidity will range around 25 percent. Winds are forecast to shift out of the south by early Wednesday morning. Wind speeds are forecast to pick up around 10 to 15 mph by the afternoon with gusts up to 25 mph. High temperatures are forecast to reach the mid 60s with partly cloudy conditions which could limit mixing until the afternoon hours. Thursday temperatures are forecast to warm up into the 70s, but minimum relative humidity will increase to around 40 percent. Winds will remain around 15 mph out of the south with afternoon gusts up to 25 mph. There is a chance for thunderstorms moving in from the southwest Thursday afternoon through Thursday night. Gusty erratic winds are possible from thunderstorms. .WEDNESDAY... Sky/weather.........Mostly sunny. CWR.................0 percent. Chance of pcpn......0 percent. LAL.................1. Max temperature.....Around 66. Min humidity........26 percent. Wind (20 ft)........South winds 10 to 16 mph. Mixing height.......5800 ft AGL. Transport winds.....South 12 to 21 mph. Smoke dispersal.....Poor (4400 knot-ft) early in the morning increasing to very good (104100 knot-ft) in the afternoon. Haines Index........4 or low potential for large plume dominated fire growth. TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........22 25 36 57 60 63 64 64 65 56 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 Temp............36 41 49 54 59 62 64 66 66 66 RH..............72 65 52 41 34 30 27 26 27 28 20 FT wind dir..SE S S S S S S S S S 20 FT wind spd..7 9 10 10 12 14 15 16 16 16 20 FT wind gust.9 12 12 14 14 15 17 18 18 18 Mix hgt (kft)...0.4 0.8 1.2 2.1 3.6 5.0 5.2 5.5 5.8 4.9 Transp wind dir.S S S S S S S S S S Transp wind spd.12 14 15 16 18 20 21 21 21 21 Haines index....4 4 4 4 4 4 4 4 4 4 Dispr kt-ft/1K..4 9 15 30 55 84 93 100 104 86 .WEDNESDAY NIGHT... Sky/weather.........Partly cloudy. CWR.................0 percent. Chance of pcpn......10 percent. LAL.................1. Min temperature.....Around 42. Max humidity........82 percent. Wind (20 ft)........Southeast winds 13 to 17 mph. Gusts up to 29 mph increasing to 30 mph overnight. Mixing height.......600 ft AGL. Transport winds.....South 15 to 20 mph. Smoke dispersal.....Good (67500 knot-ft) early in the evening decreasing to poor (7400 knot-ft) late in the night. Haines Index........3 to 5 or very low to moderate potential for large plume dominated fire growth. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........46 37 30 23 16 24 31 39 31 24 16 16 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of pcpn (%).0 10 10 10 10 10 10 10 10 10 10 10 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............66 64 61 57 54 52 50 49 48 47 46 44 RH..............29 32 37 43 50 56 61 66 69 71 73 78 20 FT wind dir..S S S SE SE SE SE SE SE SE SE SE 20 FT wind spd..15 15 15 15 15 16 17 17 16 15 14 13 20 FT wind gust.17 17 19 20 22 25 26 26 25 22 20 19 Mix hgt (kft)...4.0 3.2 2.3 1.4 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 Transp wind dir.S S S SE SE SE S S S S S S Transp wind spd.20 18 17 17 17 18 20 20 18 17 16 15 Haines index....3 3 3 3 3 4 4 5 5 5 5 5 Dispr kt-ft/1K..68 50 35 22 9 10 10 11 10 9 8 7 .THURSDAY... Sky/weather.........Mostly sunny. Slight chance of rain in the afternoon. CWR.................0 percent. Chance of pcpn......20 percent. Max temperature.....Around 74. Min humidity........40 percent. Wind (20 ft)........Southeast winds 11 to 18 mph shifting to the south 21 to 22 mph late in the afternoon. Mixing height.......5100 ft AGL. Transport winds.....South 14 to 23 mph increasing to 25 to 26 mph late in the afternoon. Smoke dispersal.....Poor (6800 knot-ft) early in the morning increasing to good (86100 knot-ft) in the afternoon increasing to very good (110600 knot-ft) late in the afternoon. Haines Index........4 to 6 or low to high potential for large plume dominated fire growth. TIME (CDT) 6 AM 9 AM NOON 3 PM Sky (%).........16 22 35 43 Weather cov..... S CHC Weather type....NONE NONE NONE RAIN Tstm cov........ CWR.............0 0 0 0 Chc of pcpn (%).10 0 0 20 Temp............43 51 64 72 RH..............82 67 49 40 20 FT wind......SE 12G17 S 12G14 S 15G20 S 21G25 Mix hgt (ft)....600 1200 2100 4300 Transport wind..S 14 S 15 S 17 S 23 Haines index....6 6 5 4 Dispr kt-ft/1K..7 15 32 86 $$ Forecaster...JOHNSON Requested by...Levi Jacobson Type of request...PRESCRIBED .TAG 2411964.0/BIS .DELDT 04/23/24 .FormatterVersion 2.0.0 .EMAIL lcjacobson@nd.gov