495
FNUS73 KBIS 191850
FWSBIS
SPOT FORECAST FOR TRAP PASTURE...TNC
NATIONAL WEATHER SERVICE BISMARCK ND
150 PM CDT TUE MAY 19 2026
FORECAST IS BASED ON IGNITION TIME OF 1400 CDT ON MAY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THIS AFTERNOON WILL REACH A HIGH OF 56, WITH A MINIMUM RELATIVE
HUMIDITY OF 37 PERCENT BY 6PM. WINDS WILL CONTINUE TO BE OUT OF
THE NORTHWEST AROUND 9MPH, GUSTING TO 17MPH. AFTER 6PM THE WINDS
WILL CALM AND SLOWLY CHANGE TO THE SOUTH OVERNIGHT. AFTER MIDNIGHT
THE SOUTH WINDS WILL INCREASE 10 TO 20 MPH BY 5AM. OVERNIGHT HUMIDITIES
WILL RECOVER TO 76 PERCENT.
REST OF TODAY
SKY/WEATHER.........PARTLY CLOUDY.
CWR.................3 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 56.
MIN HUMIDITY........37 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 9 MPH, GUST TO 17 MPH.
MIXING HEIGHT.......6200 FT AGL.
TRANSPORT WINDS.....NORTHWEST 14 TO 17 MPH.
SMOKE DISPERSAL.....GOOD (71200 KNOT-FT).
TIME (CDT) 2PM 3PM 4PM 5PM
SKY (%).........59 40 26 13
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0
CHC OF PCPN (%).10 10 0 0
CHC OF THDR (%).0 0 0 0
TEMP............48 50 52 54
RH..............54 48 44 41
20 FT WIND DIR..NW NW NW NW
20 FT WIND SPD..9 8 8 8
20 FT WIND GUST.14 15 15 14
MIX HGT (KFT)...5.9 6.1 6.2 6.2
TRANSP WIND DIR.NW NW NW NW
TRANSP WIND SPD.14 16 17 16
DISPR KT-FT/1K..71 86 93 87
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 35.
MAX HUMIDITY........79 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 8 TO 13 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING SOUTH 10 TO 20 MPH
AFTER MIDNIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....NORTHWEST 8 TO 14 MPH SHIFTING TO THE SOUTH 6 TO 15 MPH
IN THE LATE EVENING INCREASING TO AROUND 16 MPH EARLY
IN THE MORNING.
SMOKE DISPERSAL.....GOOD (69700 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (1800 KNOT-FT) LATE IN THE
NIGHT.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........10 6 9 12 12 16 8 8 15 30 38 34
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............56 56 54 48 45 42 41 39 38 37 37 37
RH..............37 37 41 54 60 67 70 73 76 75 75 75
20 FT WIND DIR..NW NW NW SE SE SE S S S S S S
20 FT WIND SPD..8 6 4 3 3 4 5 6 7 9 10 11
20 FT WIND GUST.13 11 7 5 5 6 8 10 12 14 15 18
MIX HGT (KFT)...5.8 5.4 2.7 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5
TRANSP WIND DIR.NW NW NW SW SE S S S S S S S
TRANSP WIND SPD.14 12 8 5 6 8 9 12 14 15 15 16
DISPR KT-FT/1K..70 54 19 2 2 3 3 4 5 6 6 7
FORECASTER...SMITH
REQUESTED BY...CHRIS GORDON
TYPE OF REQUEST...PRESCRIBED
.TAG 2614042.0/BIS
.DELDT 05/19/26
.FORMATTERVERSION 2.0.0
.EMAIL CHRIS_GORDON@TNC.ORG
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