594  
FNUS73 KBIS 051136  
FWSBIS  
 
SPOT FORECAST FOR HB-10...FWS  
NATIONAL WEATHER SERVICE BISMARCK ND  
636 AM CDT THU JUN 5 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON JUNE 05.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
ISOLATED SHOWERS ARE EXPECTED THIS AFTERNOON AND EARLY EVENING,  
ALONG WITH A VERY LOW CHANCE OF A RUMBLE OR TWO OF THUNDER. ONCE  
THE SUN SETS, EXPECT DRY CONDITIONS FOR TONIGHT THROUGH FRIDAY.  
LIGHT SOUTHERLY WINDS, PERHAPS VARIABLE AT TIMES, ARE EXPECTED  
TODAY THROUGH TONIGHT BEFORE TAKING ON A SOUTHWESTERLY COMPONENT  
FRIDAY WITH SUSTAINED WINDS INCREASING TO AROUND 10 TO 15 MPH.  
THE EXCEPTION BEING THAT BRIEF GUSTY AND ERRATIC WINDS ARE  
POSSIBLE NEAR ANY SHOWERS OR THUNDERSTORMS THAT DEVELOP. A HIGH  
TEMPERATURE OF 73 DEGREES IS EXPECTED TODAY WITH MINIMUM RELATIVE  
HUMIDITY VALUES DROPPING DOWN TO 30 PERCENT. RELATIVE HUMIDITY  
WILL RECOVER TO 83 PERCENT TONIGHT BEFORE DROPPING BACK DOWN TO  
AROUND 29 PERCENT FRIDAY AFTERNOON. PARTLY CLOUDY SKIES ARE  
EXPECTED TODAY, THOUGH THEY MAY MAINTAIN A MILKY APPEARANCE FROM  
ELEVATED SMOKE.  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS IN  
THE AFTERNOON, ALONG WITH A VERY LOW CHANCE FOR  
A RUMBLE OR TWO OF THUNDER.  
CWR.................1 PERCENT.  
CHANCE OF PCPN......20 PERCENT.  
CHANCE OF THUNDER...10 PERCENT.  
MAX TEMPERATURE.....AROUND 73.  
MIN HUMIDITY........30 PERCENT.  
WIND (20 FT)........LIGHT AND VARIABLE WINDS WITH BRIEF GUSTY AND  
ERRATIC WINDS POSSIBLE NEAR ANY SHOWERS AND  
THUNDERSTORMS.  
MIXING HEIGHT.......8700 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 7 MPH SHIFTING TO THE WEST LATE  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (8800 KNOT-FT) EARLY IN THE MORNING INCREASING  
TO FAIR (58900 KNOT-FT) IN THE AFTERNOON.  
 
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........31 31 33 34 44 45 48 46  
WEATHER COV..... SCH SCH SCH  
WEATHER TYPE.... RW RW RW  
TSTM COV........  
CWR.............0 0 0 0 0 0 1 1  
CHC OF PCPN (%).0 0 0 0 10 20 20 20  
CHC OF THDR (%).0 0 0 0 0 0 10 10  
TEMP............62 65 67 68 70 70 70 71  
RH..............54 45 39 36 32 31 31 31  
20 FT WIND DIR..SW S S S SW SW SW SW  
20 FT WIND SPD..3 3 3 4 4 4 4 4  
20 FT WIND GUST.7 8 8 8 8 8 9 9  
MIX HGT (KFT)...1.8 4.9 6.6 8.1 8.7 8.4 7.8 7.7  
TRANSP WIND DIR.SW SW W W W W W SW  
TRANSP WIND SPD.6 6 6 6 7 8 8 7  
DISPR KT-FT/1K..9 24 33 41 52 59 54 46  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS  
EARLY IN THE EVENING WITH A LOW CHANCE FOR A  
RUMBLE OR TWO OF THUNDER.  
CWR.................5 PERCENT.  
CHANCE OF PCPN......20 PERCENT.  
CHANCE OF THUNDER...20 PERCENT.  
MIN TEMPERATURE.....AROUND 48.  
MAX HUMIDITY........83 PERCENT.  
WIND (20 FT)........LIGHT AND VARIABLE WINDS BECOMING SOUTH AROUND  
5 MPH. GUSTY AND ERRATIC WINDS POSSIBLE NEAR  
ANY SHOWERS AND THUNDERSTORMS.  
MIXING HEIGHT.......300 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 8 MPH SHIFTING TO THE SOUTH  
EARLY IN THE EVENING.  
SMOKE DISPERSAL.....FAIR (49600 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (1900 KNOT-FT) LATE IN THE  
NIGHT.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........43 40 37 32 31 31 31 31 31 30 31 31  
WEATHER COV.....SCH SCH  
WEATHER TYPE....RW RW  
TSTM COV........ SCH  
CWR.............1 5 1 1 1 1 1 0 0 0 0 0  
CHC OF PCPN (%).20 20 10 10 10 10 10 0 0 0 0 0  
CHC OF THDR (%).10 20 10 10 10 10 10 0 0 0 0 0  
TEMP............71 70 67 63 58 56 54 53 51 50 50 49  
RH..............30 34 39 46 55 59 64 71 74 77 77 80  
20 FT WIND DIR..S SW S S S SW S S S S S SW  
20 FT WIND SPD..4 4 4 4 5 5 5 6 6 6 7 7  
20 FT WIND GUST.9 9 8 7 7 8 9 9 10 10 11 11  
MIX HGT (KFT)...7.1 6.8 4.3 0.7 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4  
TRANSP WIND DIR.W SW S S S S S S S S S SW  
TRANSP WIND SPD.8 8 12 7 7 8 9 10 10 12 13 13  
DISPR KT-FT/1K..50 47 43 4 2 2 3 3 3 3 4 4  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 78.  
MIN HUMIDITY........29 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 7 TO 12 MPH.  
MIXING HEIGHT.......7200 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 13 TO 16 MPH.  
SMOKE DISPERSAL.....POOR (4100 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO VERY GOOD (101900 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........33 19 16 4 2 6 14 21 24 27 30 37  
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............49 51 57 62 67 70 72 74 76 77 77 77  
RH..............83 83 72 62 52 46 40 35 32 31 30 29  
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW  
20 FT WIND SPD..7 7 8 9 9 10 10 11 11 12 12 12  
20 FT WIND GUST.12 12 13 14 15 17 18 18 18 19 19 19  
MIX HGT (KFT)...0.4 0.4 1.1 1.9 2.8 4.7 5.8 7.0 7.1 7.1 7.2 7.1  
TRANSP WIND DIR.SW SW SW SW SW SW W W W SW SW SW  
TRANSP WIND SPD.13 13 14 16 14 14 14 14 14 14 15 16  
DISPR KT-FT/1K..4 5 13 26 34 56 70 84 85 88 94 102  
 

 
FORECASTER...TELKEN  
REQUESTED BY...CALVIN MOLDENHAUER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2515369.0/BIS  
.DELDT 06/05/25  
.FORMATTERVERSION 2.0.0  
.EMAIL CALVIN_MOLDENHAUER@FWS.GOV  
 
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