316  
FNUS73 KBIS 281505  
FWSBIS  
 
SPOT FORECAST FOR KNIFE RIVER EAST...NATIONAL PARK SERVICE  
NATIONAL WEATHER SERVICE BISMARCK ND  
1005 AM CDT FRI APR 28 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 28.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
HIGH PRESSURE WILL REMAIN AROUND THE AREA TODAY WITH  
LIGHT WINDS. WINDS SHOULD BE FROM THE NORTH OR NORTHEAST MOST OF  
THE TIME, BUT MAY GO VARIABLE AT TIMES. THE VARIABILITY IN THE WINDS  
MAY ALSO PRODUCE GUSTS UP TO 15 MPH DURING MAX HEATING FROM MID TO  
LATE AFTERNOON. A DRY DAY WITH MINIMUM RELATIVE HUMIDITY VALUES  
BELOW 20 PERCENT.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 56.  
MIN HUMIDITY........17 PERCENT.  
WIND (20 FT)........NORTH WINDS UP TO 7 MPH.  
MIXING HEIGHT.......4400-6200 FT AGL INCREASING TO 6400-6700 FT AGL  
LATE IN THE AFTERNOON.  
TRANSPORT WINDS.....NORTHEAST 8 TO 10 MPH.  
SMOKE DISPERSAL.....GOOD (30700 KNOT-FT).  
HAINES INDEX........4 TO 5 (LOW) TO (MODERATE).  
 
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........5 9 9 7 13 13 8  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0  
CHC OF PCPN (%).0 0 0 0 0 0 0  
LAL.............1 1 1 1 1 1 1  
TEMP............44 47 50 52 54 55 56  
RH..............44 31 26 22 20 18 17  
20 FT WIND DIR..NE NE NE NE NE NE N  
20 FT WIND SPD..5 6 7 7 7 7 6  
20 FT WIND GUST.10 10 10 10 10 10 10  
MIX HGT (KFT)...4.4 5.1 5.9 6.2 6.5 6.7 6.4  
TRANSP WIND DIR.N N NE NE NE NE NE  
TRANSP WIND SPD.8 8 10 10 10 9 9  
HAINES INDEX....4 4 4 4 5 5 5  
SDSPL KT-FT/100031 36 53 56 58 54 52  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....AROUND 26.  
MAX HUMIDITY........66 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS UP TO 6 MPH EARLY IN THE  
EVENING BECOMING LIGHT.  
MIXING HEIGHT.......5900-6100 FT AGL DECREASING TO 200-300 FT AGL.  
TRANSPORT WINDS.....NORTH 8 TO 9 MPH SHIFTING TO THE SOUTH 2 TO 3  
MPH IN THE LATE EVENING AND OVERNIGHT.  
SMOKE DISPERSAL.....POOR TO GOOD (300-49100 KNOT-FT).  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........5 5 5 5 16 14 17 19 22 26 29 30  
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  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
TEMP............55 53 49 44 40 37 34 33 32 31 30 27  
RH..............17 19 24 31 37 42 46 51 53 55 59 63  
20 FT WIND DIR..NE NE NE NE E E SE SE SE S S S  
20 FT WIND SPD..6 6 5 4 3 3 3 2 2 2 2 2  
20 FT WIND GUST.10 10 10 5 5 5 5 5 5 5 5 5  
MIX HGT (KFT)...6.1 5.9 4.0 2.2 0.3 0.3 0.2 0.2 0.2 0.2 0.2 0.2  
TRANSP WIND DIR.NE N N N E E E SE SE SE S S  
TRANSP WIND SPD.9 8 8 8 3 3 3 2 2 2 3 3  
HAINES INDEX....5 5 5 5 5 5 5 5 5 5 5 5  
SDSPL KT-FT/100049 41 28 15 1 1 1 0 0 0 1 1  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 61.  
MIN HUMIDITY........23 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH UP TO 6 MPH IN THE  
LATE MORNING AND AFTERNOON.  
MIXING HEIGHT.......200-1700 FT AGL INCREASING TO 7400-7800 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 3 TO 7 MPH.  
SMOKE DISPERSAL.....POOR TO GOOD (500-39300 KNOT-FT).  
HAINES INDEX........5 TO 6 (MODERATE) TO (HIGH).  
 
TIME (CDT) 6 AM 9 AM NOON 3 PM  
SKY (%).........30 35 41 49  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
CWR.............0 0 0 0  
CHC OF PCPN (%).0 0 0 0  
LAL.............1 1 1 1  
TEMP............26 39 54 59  
RH..............66 50 30 25  
20 FT WIND......S 2G5 S 5 S 6 S 6  
MIX HGT (FT)....200 3200 5900 7400  
TRANSPORT WIND..S 3 S 3 S 7 SW 7  
HAINES INDEX....5 5 5 6  
SDSPL KT-FT/10001 19 36 39  
 

 
FORECASTER...VINING  
REQUESTED BY...CHARLES FOLK  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1707959.0/BIS  
.EMAIL CHARLES_FOLK@NPS.GOV  
 
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