021  
FNUS73 KABR 201523 AAA  
FWSABR  
 
SPOT FORECAST FOR FOX RIDGE RX...UPDATED  
NATIONAL WEATHER SERVICE ABERDEEN SD  
923 AM CST MON NOV 20 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 MST ON NOVEMBER 20.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE IN ABERDEEN SD.  
   
DISCUSSION
 
 
UPDATED THE FORECAST TO INCREASE WINDS SLIGHTLY AND TO ADJUST  
SMOKE DISPERSAL.  
 
WINDS WILL BE FROM A WESTERLY DIRECTION THIS MORNING INTO THE  
EARLY AFTERNOON, BEFORE BECOMING MORE NORTHWESTERLY BY MID  
AFTERNOON. SPEEDS WILL GRADUALLY INCREASE THROUGH THE DAY,  
BECOMING RATHER BREEZY AND GUSTY BY THIS AFTERNOON. SEE THE  
DETAILS BELOW IN THE HOUR-BY-HOUR FORECAST. RELATIVE HUMIDITY WILL  
GRADUALLY FALL INTO THE LOWER 20S BY PEAK HEATING THIS AFTERNOON,  
AS HIGH TEMPERATURES TOP OUT AROUND 60 DEGREES UNDER PASSING HIGH  
CLOUDS.  
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT CLOUD).  
MAX TEMPERATURE.....57-62.  
MIN HUMIDITY........21-26 PERCENT.  
WIND (20 FT)........BREEZY. WEST WINDS 10 TO 18 MPH WITH GUSTS UP  
TO 30 MPH, BECOMING NORTHWEST 16 TO 25 MPH WITH  
GUSTS UP TO 35 MPH LATE IN THE MORNING.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......100-600 FT AGL, INCREASING TO 2600-3600 FT AGL  
LATE IN THE MORNING, THEN, DECREASING TO 600 FT  
AGL EARLY.  
TRANSPORT WINDS.....WEST 26 TO 31 MPH, INCREASING TO NORTHWEST 39  
TO 44 MPH LATE IN THE MORNING, THEN, DECREASING  
TO AROUND 32 MPH EARLY.  
SMOKE DISPERSAL.....POOR, INCREASING TO GOOD LATE IN THE MORNING,  
THEN, INCREASING TO VERY GOOD EARLY IN THE  
AFTERNOON, DECREASING TO POOR EARLY.  
HAINES INDEX........3 TO 5 (VERY LOW) TO (MODERATE).  
 
TIME (MST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........49 46 42 38 44 50 56 60 64 68  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............39 44 49 55 58 59 58 55 52 49  
RH..............46 39 33 26 23 24 25 29 33 39  
20 FT WIND DIR..W W W W NW W W NW NW NW  
20 FT WIND SPD..10 14 18 22 24 25 24 22 21 16  
20 FT WIND GUST.15 20 30 30 35 35 35 30 30 25  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT CLOUD), THEN  
BECOMING PARTLY CLOUDY (25-35 PERCENT CLOUD).  
MIN TEMPERATURE.....16-21.  
MAX HUMIDITY........61-66 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 14 TO 23 MPH, INCREASING TO  
AROUND 24 MPH LATE. GUSTS UP TO 25 MPH,  
INCREASING TO 35 MPH AFTER MIDNIGHT.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......300-900 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 29 TO 37 MPH.  
SMOKE DISPERSAL.....POOR (6300-15800).  
HAINES INDEX........3 (VERY LOW).  
 
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........66 64 62 60 59 57 49 40 32 25 17 10  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............47 44 42 40 38 36 33 31 28 26 23 21  
RH..............42 49 55 59 62 64 66 63 63 60 59 59  
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW NW NW  
20 FT WIND SPD..15 14 14 15 16 17 18 21 22 23 24 24  
20 FT WIND GUST.20 20 20 20 25 25 30 30 30 30 35 35  
   
TUESDAY
 
 
SKY/WEATHER.........SUNNY (10-20 PERCENT CLOUD).  
MAX TEMPERATURE.....25-30.  
MIN HUMIDITY........38-43 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 15 TO 24 MPH WITH GUSTS UP TO  
35 MPH, BECOMING NORTH 7 TO 13 MPH EARLY IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......1300-2300 FT AGL, DECREASING TO 300 FT AGL  
LATE.  
TRANSPORT WINDS.....NORTHWEST 35 TO 40 MPH, DECREASING TO 28 TO 33  
MPH EARLY IN THE MORNING, THEN, DECREASING TO  
14 TO 21 MPH LATE IN THE MORNING, BECOMING  
NORTHEAST AROUND 7 MPH LATE.  
SMOKE DISPERSAL.....POOR (1500-45000).  
HAINES INDEX........3 (VERY LOW).  
 
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........10 10 10 11 12 12 12 11 11 12 14 16  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............19 18 18 19 21 23 25 27 27 25 22 20  
RH..............61 64 61 56 49 45 42 40 40 44 49 54  
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW N N  
20 FT WIND SPD..24 23 22 21 18 17 16 15 13 10 8 7  
20 FT WIND GUST.35 30 30 30 30 25 25 20 15 15 10 10  
 

 
FORECASTER...TMT  
REQUESTED BY...FUELS SPECIALIST  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1719022.0/ABR  
.EMAIL LELAND.BLACK@BIA.GOV  
 
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