063
FNUS73 KBIS 112353
FWSBIS
SPOT FORECAST FOR WILLIAMS COUNTY WILDFIRE...WILLIAMS COUNTY EM
NATIONAL WEATHER SERVICE BISMARCK ND
653 PM CDT MON MAY 11 2026
FORECAST IS BASED ON FORECAST START TIME OF 1900 CDT ON MAY 11.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
..RED FLAG WARNING IN EFFECT UNTIL 10 PM CDT THIS EVENING
DISCUSSION
WINDS WILL REMAIN NORTHWEST GUSTING TO 45 MPH AT THE FIRE SITE UNTIL
ABOUT 2200 CDT THIS EVENING. ISOLATED SHOWERS THIS EVENING MAY IMPACT
THE FIRE SITE WITH GUSTY AND ERRATIC WINDS, BUT LITTLE TO NO RAINFALL.
WINDS WILL START TO DIMINISH AFTER 2200 CDT, BUT WILL REMAIN NORTHWEST
OVERNIGHT WITH GUSTS TO AROUND 28 MPH THROUGH THE NIGHT. HUMIDITY
WILL HAVE ONLY MODERATE RECOVERY OVERNIGHT. ANOTHER DAY WITH LOW
HUMIDITY IS EXPECTED TUESDAY WITH MINIMUM VALUES OF 18 TO 22 PERCENT
TUESDAY AFTERNOON. WINDS WILL BE LESS ON TUESDAY, BUT THERE WILL STILL
BE OCCASIONAL GUSTS TO 25 MPH THROUGH THE DAY. SCHULTZ
REST OF TONIGHT
SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS WITH GUSTY AND
ERRATIC WINDS AND LITTLE TO NO RAINFALL THIS
EVENING.
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...7 PERCENT.
MIN TEMPERATURE.....AROUND 48.
MAX HUMIDITY........54 PERCENT.
WIND (20 FT)........WINDY. NORTHWEST WINDS 25 TO 35 MPH WITH GUSTS
TO AROUND 45 MPH THIS EVENING. WINDS WILL START
TO DECREASE AFTER 2200 CDT, BUT WILL REMAIN NORTHWEST
OVERNIGHT AROUND 17 MPH WITH GUSTS TO 28 MPH.
MIXING HEIGHT.......DECREASING TO 600 FT AGL BY LATE TONIGHT.
TRANSPORT WINDS.....NORTHWEST AROUND 35 MPH THIS EVENING, DECREASING TO
AROUND 20 OVERNIGHT.
SMOKE DISPERSAL.....EXCELLENT (212500 KNOT-FT) EARLY IN THE EVENING
DECREASING TO TO FAIR (42200 KNOT-FT) OVERNIGHT.
TIME (CDT) 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........48 52 52 46 33 21 29 27 22 14 6
WEATHER COV.....ISO ISO
WEATHER TYPE....RW RW
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).10 10 0 0 0 0 0 0 0 0 0
TEMP............71 68 63 60 57 55 55 53 52 50 49
RH..............22 25 30 35 45 47 47 50 50 52 54
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW NW
20 FT WIND SPD..29 28 27 24 19 18 17 16 15 15 15
20 FT WIND GUST.45 45 40 37 28 26 26 25 24 24 24
MIX HGT (KFT)...6.6 5.1 1.8 1.5 0.9 0.9 0.8 0.7 0.6 0.6 0.6
TRANSP WIND DIR.NW NW NW NW NW NW NW NW NW NW NW
TRANSP WIND SPD.37 32 28 23 22 21 20 18 17 17 17
DISPR KT-FT/1K..213 142 42 24 18 16 11 11 9 8 8
TUESDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........19 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 14 TO 18 MPH WITH GUSTS TO
AROUND 25 MPH.
MIXING HEIGHT.......9400 FT AGL.
TRANSPORT WINDS.....NORTHWEST 16 TO 23 MPH.
SMOKE DISPERSAL.....POOR (7500 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (169900 KNOT-FT)
IN THE AFTERNOON.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........4 8 12 5 3 4 3 2 5 4 4 2
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............48 48 52 56 61 64 67 69 70 72 73 74
RH..............54 54 48 43 38 33 29 26 22 21 20 20
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW NW NW
20 FT WIND SPD..14 14 15 16 17 18 18 18 18 18 17 16
20 FT WIND GUST.22 21 22 21 22 24 25 25 25 25 24 24
MIX HGT (KFT)...0.5 0.5 0.8 1.4 3.7 6.8 8.1 8.7 8.9 9.2 9.3 9.4
TRANSP WIND DIR.NW NW NW NW NW NW NW NW NW NW NW NW
TRANSP WIND SPD.16 16 17 18 22 23 22 22 22 21 21 21
DISPR KT-FT/1K..8 8 12 22 70 136 154 166 170 166 167 169
TUESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........53 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 7 TO 15 MPH IN THE EVENING, THEN
SHIFTING TO THE SOUTHEAST 5 TO 8 MPH OVERNIGHT.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....NORTHWEST 14 TO 21 MPH IN THE EVENING, DECREASING
AND BECOMING EAST AROUND 8 MPH OVERNIGHT.
SMOKE DISPERSAL.....EXCELLENT (167000 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (2200 KNOT-FT) IN THE
LATE EVENING AND OVERNIGHT.
TIME (CDT) 6 PM 9 PM MIDNGT 3 AM
SKY (%).........2 12 14 14
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
CHC OF PCPN (%).0 0 0 0
CHC OF THDR (%).0 0 0 0
TEMP............74 62 51 48
RH..............19 30 42 49
20 FT WIND......NW 15G21 NW 7G11 E 5G6 SE 6G8
MIX HGT (FT)....9300 1100 300 300
TRANSPORT WIND..NW 21 NW 10 NE 8 SE 10
DISPR KT-FT/1K..167 10 2 3
WEDNESDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........16 PERCENT.
WIND (20 FT)........BREEZY. SOUTHEAST WINDS 10 TO 15 MPH WITH GUSTS
TO AROUND 25 MPH INCREASING TO 20 TO 30 MPH
WITH GUSTS TO AROUND 40 MPH IN THE AFTERNOON.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WINDS.....SOUTH 10 TO 20 MPH INCREASING TO 25 TO 35 MPH
IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (3400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (191600 KNOT-FT) IN THE
AFTERNOON.
TIME (CDT) 6 AM 10 AM 2 PM
SKY (%).........28 13 24
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE
TSTM COV........
CWR.............0 0 0
CHC OF PCPN (%).0 0 0
CHC OF THDR (%).0 0 0
TEMP............46 64 78
RH..............53 31 19
20 FT WIND......SE 9G13 SE 16G22 SE 24G33
MIX HGT (FT)....400 2300 6900
TRANSPORT WIND..S 13 S 18 S 29
DISPR KT-FT/1K..4 37 170
FORECASTER...SCHULTZ
REQUESTED BY...MIKE SMITH
TYPE OF REQUEST...WILDFIRE
.TAG 2613419.0/BIS
.DELDT 05/11/26
.FORMATTERVERSION 2.0.0
.EMAIL MIKESM@CO.WILLIAMS.ND.US
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