Spot Forecast
Issued by NWS Bismarck, ND
Issued by NWS Bismarck, ND
231 FNUS73 KBIS 200841 FWSBIS Spot Forecast for DU 28...USFWS National Weather Service Bismarck ND 341 AM CDT Mon May 20 2024 Forecast is based on ignition time of 0900 CDT on May 20. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... Look for mostly cloudy skies today with a northwest wind around 7 to 10 mph at ignition time, increasing to 10 to 15 mph late morning through mid afternoon. Gusts of 15 to 20 mph will be possible during this time. Winds will then shift to the north and diminish back to around 10 mph late in the afternoon. The forecast high is 66 degrees. Poor smoke dispersal this morning will increase to good in the afternoon. At max heating this afternoon the mixing height is expected to be near 8000 feet. With the proximity to the water, it`s possible that this afternoon winds may be impacted by local lake breeze interactions, especially later this afternoon as environmental winds really begin to drop off. .REST OF TODAY... Sky/weather.........Mostly cloudy. CWR.................0 percent. Chance of pcpn......10 percent. LAL.................1. Max temperature.....Around 66. Min humidity........34 percent. Wind (20 ft)........Northwest winds 7 to 10 mph at ignition time, increasing to 10 to 15 mph late morning through mid afternoon. Gusts of 15 to 20 mph possible during this time. Winds will then shift to the north and diminish back to around 10 mph late in the afternoon. Mixing height.......7900 ft AGL. Transport winds.....Northwest 13 to 17 mph shifting to the north late in the afternoon. Smoke dispersal.....Poor (24200 knot-ft) early in the morning increasing to good (95600 knot-ft) in the afternoon. Haines Index........3 to 5 or very low to moderate potential for large plume dominated fire growth. TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........68 64 61 61 59 62 66 69 70 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 Chc of pcpn (%).10 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 Temp............50 53 56 59 61 63 65 65 66 RH..............83 71 62 53 48 43 38 37 34 20 FT wind dir..NW NW NW NW NW NW N N N 20 FT wind spd..8 9 10 10 12 12 11 9 7 20 FT wind gust.13 14 16 18 18 16 14 13 12 Mix hgt (kft)...2.2 3.3 4.4 5.0 6.0 6.8 7.4 7.8 7.9 Transp wind dir.W NW NW NW NW N N N N Transp wind spd.13 15 17 18 18 16 15 13 12 Haines index....3 3 3 3 3 4 4 5 5 Dispr kt-ft/1K..24 44 66 76 90 95 96 86 79 .TONIGHT... Sky/weather.........Mostly cloudy then becoming partly cloudy. CWR.................0 percent. Chance of pcpn......10 percent. LAL.................1. Min temperature.....Around 44. Max humidity........86 percent. Wind (20 ft)........North winds 5 to 6 mph early in the evening becoming light. Mixing height.......400 ft AGL. Transport winds.....North 6 to 9 mph shifting to the east 7 to 10 mph in the late evening and overnight. Smoke dispersal.....Fair (58600 knot-ft) early in the evening decreasing to poor (2900 knot-ft) late in the night. Haines Index........5 or moderate potential for large plume dominated fire growth. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........72 70 65 54 54 51 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 0 0 Chc of pcpn (%).0 0 0 0 0 0 LAL.............1 1 1 1 1 1 Temp............65 62 54 51 48 46 RH..............35 41 59 66 74 79 20 ft wind......N 6 NE 4 E 3 E 3 E 3 E 3 20 ft wind gust.10 8 7 7 6 7 Mix hgt (ft)....7300 3100 500 500 400 400 Transport wind..NW 9 N 6 E 8 E 9 E 10 E 8 Haines index....5 5 5 5 5 5 Dispr kt-ft/1K..59 16 4 4 4 3 .TUESDAY... Sky/weather.........Partly sunny. Slight chance of rain showers in the afternoon. CWR.................0 percent. Chance of pcpn......20 percent. LAL.................1. Max temperature.....Around 67. Min humidity........37 percent. Wind (20 ft)........Light winds becoming northeast 5 to 10 mph in the late morning and early afternoon, then increasing to around 10 mph late in the afternoon. Mixing height.......6800 ft AGL. Transport winds.....East around 9 mph shifting to the northwest around 12 mph late in the afternoon. Smoke dispersal.....Poor (3400 knot-ft) early in the morning increasing to good (67100 knot-ft) in the afternoon. Haines Index........5 or moderate potential for large plume dominated fire growth. TIME (CDT) 6 AM 9 AM NOON 3 PM Sky (%).........47 44 62 68 Weather cov..... S CHC Weather type....NONE NONE NONE RNSHWR Tstm cov........ CWR.............0 0 0 0 Chc of pcpn (%).0 0 10 20 LAL.............1 1 1 1 Temp............45 53 62 65 RH..............82 71 46 38 20 FT wind......E 3G6 E 4G8 NE 7G12 NE 9G14 Mix hgt (ft)....400 1400 5700 6800 Transport wind..E 9 E 9 NE 9 N 10 Haines index....5 5 5 5 Dispr kt-ft/1K..3 11 45 63 $$ Forecaster...HAMILTON Requested by...Dustin Mireles Type of request...PRESCRIBED .TAG 2414678.0/BIS .DELDT 05/20/24 .FormatterVersion 2.0.0 .EMAIL dustin_mireles@fws.gov