####018003826#### FNUS73 KBIS 041441 FWSBIS Spot Forecast for N Prairie...TNC National Weather Service Bismarck ND 941 AM CDT Sat May 4 2024 Forecast is based on ignition time of 1100 CDT on May 04. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... A partly to mostly cloudy sky can be expected through most of the day, with cloud coverage decreasing through the day. Humidity values around 70 percent are expected at the time of ignition, with values gradually decreasing through the day. Minimum humidity values are expected to be around 48 percent in the evening hours. Initially, winds will be out of the northwest at around 7 mph, becoming lighter as the day progresses. High temperatures today are expected to be in the mid 50s. .TODAY... Sky/weather.........Mostly cloudy in the morning, then decreasing clouds in the afternoon. CWR.................0 percent. Chance of pcpn......0 percent. LAL.................1. Max temperature.....Around 56. Min humidity........48 percent. Wind (20 ft)........Northwest winds 5 to 7 mph, but may become light and variable towards evening. Mixing height.......5200 ft AGL. Transport winds.....Northwest 6 to 13 mph. Smoke dispersal.....Poor (21500 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........83 80 77 70 62 55 43 CWR.............0 0 0 0 0 0 0 Chc of pcpn (%).0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 Temp............47 48 49 50 52 54 55 RH..............70 71 68 66 59 52 49 20 FT wind dir..NW NW NW NW NW NW NW 20 FT wind spd..7 6 6 5 5 5 5 20 FT wind gust.11 10 9 8 8 7 7 Mix hgt (kft)...2.6 2.9 3.5 3.9 4.3 4.8 5.2 Transp wind dir.NW NW NW NW NW NW W Transp wind spd.13 12 8 8 8 7 7 Haines index....3 3 3 3 3 3 3 .TONIGHT... Sky/weather.........Mostly clear. CWR.................0 percent. Chance of pcpn......0 percent. LAL.................1. Min temperature.....Around 34. Max humidity........96 percent. Wind (20 ft)........Light northwest winds early, becoming southeast 5 to 7 mph overnight. Mixing height.......400 ft AGL. Transport winds.....Northwest at 6 to 13 mph early, becoming southeast at 6 to 13 mph overnight. Smoke dispersal.....Poor (3100 knot-ft). Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. .SUNDAY... Sky/weather.........Mostly sunny. CWR.................0 percent. Chance of pcpn......0 percent. LAL.................1. Max temperature.....Around 69. Min humidity........34 percent. Wind (20 ft)........Southeast winds 7 to 13 mph in the morning, increasing to 16 to 22 mph with gusts to around 31 mph in the afternoon. Mixing height.......5600 ft AGL. Transport winds.....Southeast at 13 to 20 mph, increasing to 24 to 31 mph late in the afternoon. Smoke dispersal.....Poor (4700 knot-ft) early in the morning increasing to very good (100100 knot-ft) in the afternoon. Haines Index........4 or low potential for large plume dominated fire growth. $$ Forecaster...BESSON Requested by...Chris Gordon Type of request...PRESCRIBED .TAG 2413138.0/BIS .DELDT 05/04/24 .FormatterVersion 2.0.0 .EMAIL Chris_gordon@tnc.org