516  
FNUS73 KBIS 241004  
FWSBIS  
 
SPOT FORECAST FOR FALKIRK RX...USFWS  
NATIONAL WEATHER SERVICE BISMARCK ND  
504 AM CDT THU APR 24 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 CDT ON APRIL 24.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
 
LIGHT WINDS AND MOSTLY CLOUDY SKIES ARE EXPECTED NEAR THE BURN AREA  
THIS MORNING, WITH NORTHEAST WINDS INCREASING TO AROUND 5 TO 10 MPH  
IN THE AFTERNOON. MINIMUM RELATIVE HUMIDITY VALUES WILL DECREASE TO  
AROUND 32 PERCENT TODAY, BEFORE RECOVERING TO AROUND 85 PERCENT  
TONIGHT. WINDS OVERNIGHT DECREASE BACK TO LIGHT AND VARIABLE, WITH  
CLOUD COVERAGE GRADUALLY DECREASING AS WELL. FOR FRIDAY, MINIMUM  
RELATIVE HUMIDITY VALUES DROP TO AROUND 23 PERCENT, WITH EASTERLY  
WINDS INCREASING TO AROUND 5 TO 10 MPH, ALONG WITH SOME GUSTS  
NEARING 15 MPH. HIGH TEMPERATURES FRIDAY WILL WARM SLIGHTLY, TO 61  
DEGREES.  
   
REST OF TODAY  
 
SKY/WEATHER.........MOSTLY CLOUDY.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......10 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 56.  
MIN HUMIDITY........32 PERCENT.  
WIND (20 FT)........LIGHT WINDS THIS MORNING, BECOMING NORTHEAST 5  
TO 10 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......7000 FT AGL.  
TRANSPORT WINDS.....EAST 6 TO 7 MPH SHIFTING TO THE NORTHEAST 7 TO  
8 MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (1800 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO FAIR (49200 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........69 73 75 78 81 82 84 87 83 85  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0  
CHC OF PCPN (%).0 0 0 0 10 10 10 10 10 10  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0  
TEMP............35 40 45 48 50 52 54 54 55 55  
RH..............85 73 65 56 48 43 36 35 34 34  
20 FT WIND DIR..E E SE E E E NE NE NE NE  
20 FT WIND SPD..1 3 4 4 5 5 5 6 7 7  
20 FT WIND GUST.5 6 7 7 8 9 9 10 11 11  
MIX HGT (KFT)...0.3 0.4 1.4 3.5 5.1 6.0 6.3 6.5 7.0 6.9  
TRANSP WIND DIR.SE SE SE E E E NE NE NE NE  
TRANSP WIND SPD.7 7 6 7 6 6 7 7 8 8  
DISPR KT-FT/1K..2 2 7 21 25 30 38 39 49 49  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY, BECOMING MOSTLY CLEAR LATE.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......10 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....AROUND 31.  
MAX HUMIDITY........85 PERCENT.  
WIND (20 FT)........LIGHT AND VARIABLE.  
MIXING HEIGHT.......200 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 8 TO 9 MPH SHIFTING TO THE EAST  
AROUND 8 MPH EARLY IN THE EVENING, THEN  
SHIFTING TO THE SOUTHEAST 7 TO 8 MPH LATE IN  
THE EVENING SHIFTING TO THE NORTH 6 TO 8 MPH  
LATE IN THE EVENING.  
SMOKE DISPERSAL.....FAIR (45800 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (1300 KNOT-FT) LATE IN THE  
NIGHT.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........84 75 53 39 27 20  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CWR.............0 0 0 0 0 0  
CHC OF PCPN (%).10 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0  
TEMP............55 50 45 41 37 34  
RH..............32 42 53 62 70 78  
20 FT WIND......NE 7 NE 6 NE 5 NW 4 NW 4 N 4  
20 FT WIND GUST.12 10 8 8 7 7  
MIX HGT (FT)....6500 2200 300 300 300 200  
TRANSPORT WIND..N 8 E 8 SE 8 N 7 N 8 N 7  
DISPR KT-FT/1K..46 15 2 2 2 1  
   
FRIDAY  
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 61.  
MIN HUMIDITY........23 PERCENT.  
WIND (20 FT)........LIGHT WINDS, BECOMING EAST 5 TO 10 MPH IN THE  
LATE MORNING AND EARLY AFTERNOON.  
MIXING HEIGHT.......6700 FT AGL.  
TRANSPORT WINDS.....NORTH 6 TO 7 MPH SHIFTING TO THE EAST 8 TO 12  
MPH IN THE LATE MORNING AND AFTERNOON.  
SMOKE DISPERSAL.....POOR (1300 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO GOOD (63300 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 6 AM 10 AM 2 PM  
SKY (%).........19 27 19  
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............32 47 59  
RH..............85 51 26  
20 FT WIND......N 4G7 NE 5G9 E 9G13  
MIX HGT (FT)....300 2100 6000  
TRANSPORT WIND..N 6 NE 8 E 9  
DISPR KT-FT/1K..1 15 50  
 
 
FORECASTER...BESSON  
REQUESTED BY...DUSTIN MIRELES  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2511635.0/BIS  
.DELDT 04/24/25  
.FORMATTERVERSION 2.0.0  
.EMAIL DUSTIN_MIRELES@FWS.GOV  
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