201
FNUS73 KBIS 291806
FWSBIS
SPOT FORECAST FOR AMERICA 250...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE BISMARCK ND
106 PM CDT MON JUN 29 2026
FORECAST IS BASED ON FORECAST START TIME OF 1200 CDT ON JUNE 29.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
CLOUDY SKIES WITH SHOWERS AND ISOLATED THUNDERSTORMS WILL BE FOUND THIS AFTERNOON
INTO EARLY THIS EVENING. SKIES THEN CLEAR TONIGHT AND REMAIN MAINLY CLEAR THROUGH
TUESDAY. LIGHT AND VARIABLE WINDS TODAY WILL BECOME A STEADY WEST SOUTHWEST WIND
TONIGHT. TUESDAY WILL THEN SEE GUSTY WESTERLY WINDS. HUMIDITY VALUES IN THE 40S
ARE EXPECTED TODAY, LOWERING TO AROUND 40 PERCENT ON TUESDAY.
REST OF TODAY
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY. SHOWERS WITH ISOLATED THUNDERSTORMS LIKELY.
CWR.................20 PERCENT.
CHANCE OF PCPN......60 PERCENT.
CHANCE OF THUNDER...30 PERCENT.
MAX TEMPERATURE.....AROUND 76.
MIN HUMIDITY........46 PERCENT.
WIND (20 FT)........VARIABLE WINDS 5 TO 10 MPH.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS IN THE AFTERNOON.
MIXING HEIGHT.......9600 FT AGL.
TRANSPORT WINDS.....SOUTH SOUTHWEST 10 TO 20 MPH.
SMOKE DISPERSAL.....VERY GOOD (120500 KNOT-FT) TO EXCELLENT (162400 KNOT-FT).
TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........45 53 38 46 58 56
WEATHER COV.....SCH SCH SCH CHC LKY CHC
WEATHER TYPE....RW RW RW RW RW RW
TSTM COV........ SCH SCH CHC LKY CHC
CWR.............10 20 20 20 20 20
CHC OF PCPN (%).20 20 20 40 60 50
CHC OF THDR (%).10 20 20 20 30 30
TEMP............66 67 68 69 70 72
RH..............56 54 53 51 48 44
20 FT WIND DIR..NE NE E SE SE SE
20 FT WIND SPD..7 7 8 8 8 8
20 FT WIND GUST.13 14 14 15 15 14
MIX HGT (KFT)...2.9 4.6 6.1 7.4 9.6 7.5
TRANSP WIND DIR.S S S S S SW
TRANSP WIND SPD.9 12 14 16 20 18
DISPR KT-FT/1K..24 46 73 104 162 121
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY BECOMING PARTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING.
CWR.................15 PERCENT DECREASING TO 5 PERCENT.
CHANCE OF PCPN......40 PERCENT.
CHANCE OF THUNDER...31 PERCENT.
MIN TEMPERATURE.....AROUND 51.
MAX HUMIDITY........89 PERCENT.
WIND (20 FT)........WINDS BECOMING SOUTHWEST 5 TO 15 MPH IN THE
LATE EVENING AND OVERNIGHT. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
EVENING.
MIXING HEIGHT.......700 FT AGL.
TRANSPORT WINDS.....WEST 16 TO 23 MPH.
SMOKE DISPERSAL.....GOOD (89900 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (9800 KNOT-FT) LATE IN THE
NIGHT.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........49 48 36 44 55 32 38 30 24 20 14 21
WEATHER COV.....CHC CHC SCH
WEATHER TYPE....RW RW RW
TSTM COV........CHC CHC SCH
CWR.............20 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).40 30 20 10 10 10 10 0 0 0 0 0
CHC OF THDR (%).30 10 10 0 0 0 0 0 0 0 0 0
TEMP............70 68 66 64 61 59 57 56 55 55 54 53
RH..............49 53 56 58 65 67 72 74 77 77 80 86
20 FT WIND DIR..NE N N NW W W SW SW SW SW W SW
20 FT WIND SPD..8 8 8 9 8 9 9 9 10 11 11 11
20 FT WIND GUST.13 13 12 14 14 14 14 14 15 17 18 18
MIX HGT (KFT)...5.5 4.5 3.0 1.7 0.8 0.7 0.9 1.2 0.7 0.8 0.7 0.7
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.17 23 21 18 16 16 18 20 20 20 20 20
DISPR KT-FT/1K..82 90 54 27 12 10 15 20 12 14 11 12
TUESDAY
SKY/WEATHER.........SUNNY.
CWR.................1 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........39 PERCENT.
WIND (20 FT)........WEST WINDS 15 TO 25 MPH. GUSTS UP TO 35 MPH.
MIXING HEIGHT.......7700 FT AGL.
TRANSPORT WINDS.....WEST 20 TO 30 MPH GUSTS TO 40 MPH.
SMOKE DISPERSAL.....POOR (16600 KNOT-FT) EARLY IN THE MORNING
INCREASING TO VERY GOOD (128700 KNOT-FT) INCREASING TO
EXCELLENT (207000 KNOT-FT) IN THE AFTERNOON.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........12 13 13 0 2 14 29 13 25 26 32 18
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............52 53 56 60 64 67 70 72 73 75 76 77
RH..............89 89 86 75 67 59 53 49 48 45 42 40
20 FT WIND DIR..W SW W W W W W W W W W W
20 FT WIND SPD..12 13 14 15 17 20 21 21 21 20 19 18
20 FT WIND GUST.19 19 20 22 25 27 30 31 31 30 28 27
MIX HGT (KFT)...0.9 1.1 2.0 2.9 3.8 4.8 5.4 6.2 6.5 7.1 7.6 7.7
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.22 23 26 30 30 31 32 35 35 33 30 31
DISPR KT-FT/1K..17 21 47 75 100 129 151 187 195 206 199 207
FORECASTER...ANGLIN
REQUESTED BY...ANDY THORSTENSON
TYPE OF REQUEST...WILDFIRE
.TAG 2616441.0/BIS
.DELDT 06/29/26
.FORMATTERVERSION 2.0.0
.EMAIL MORGAN_VOSS@NPS.GOV,ANDY_THORSTENSON@NPS.GOV,KRYSTAL_HAZEN@NPS.GOV
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