695  
FNUS73 KABR 051326  
FWSABR  
 
SPOT FORECAST FOR WHITE HORSE RX...SD-CRA  
NATIONAL WEATHER SERVICE ABERDEEN SD  
826 AM CDT SUN AUG 5 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 MDT ON AUGUST 05.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE IN ABERDEEN SD.  
   
DISCUSSION
 
 
WINDS SHOULD GENERALLY FAVOR A NORTH DIRECTION THROUGH TODAY, WITH  
ANY GUSTS LIKELY NO HIGHER THAN 15 MPH. SHOWERS ARE POSSIBLE, BUT  
MAINLY TOWARD EVENING.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT CLOUD). A SLIGHT  
CHANCE OF SHOWERS LATE IN THE AFTERNOON.  
CWR.................0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....86-91.  
MIN HUMIDITY........26-31 PERCENT.  
WIND (20 FT)........NORTH WINDS 6 TO 9 MPH.  
MIXING HEIGHT.......300 FT AGL INCREASING TO 7500-8500 FT AGL.  
TRANSPORT WINDS.....NORTH 7 TO 16 MPH DECREASING TO 3 TO 8 MPH LATE  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (2600-40400).  
HAINES INDEX........6 (HIGH).  
 
TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........37 41 48 54 61 60 59 59 60 61  
WEATHER COV..... SCH  
WEATHER TYPE.... RW  
TSTM COV........  
TEMP............68 73 77 80 82 83 84 85 87 88  
RH..............67 55 48 42 38 37 34 32 30 28  
20 FT WIND DIR..NW N N N N N N N N NE  
20 FT WIND SPD..7 7 8 9 9 8 7 6 6 7  
20 FT WIND GUST.9 10 12 13 13 12 9 8 8 9  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT CLOUD). A SLIGHT  
CHANCE OF SHOWERS EARLY IN THE EVENING. A  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE  
IN THE EVENING.  
CWR.................0 PERCENT.  
LAL.................1 UNTIL 2400, THEN 2 UNTIL 0500, THEN 1.  
MIN TEMPERATURE.....60-65.  
MAX HUMIDITY........79-84 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS AROUND 7 MPH SHIFTING TO THE  
NORTH 6 TO 7 MPH EARLY IN THE EVENING. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS  
LATE IN THE EVENING.  
MIXING HEIGHT.......9900-10400 FT AGL DECREASING TO 100-600 FT AGL  
IN THE LATE EVENING AND OVERNIGHT.  
TRANSPORT WINDS.....NORTHEAST 3 TO 8 MPH SHIFTING TO THE NORTH 8 TO  
15 MPH IN THE LATE EVENING.  
SMOKE DISPERSAL.....POOR (1800-43200).  
HAINES INDEX........6 (HIGH).  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........62 65 67 70 69 68 67 66 65 64 64 65  
WEATHER COV.....SCH SCH SCH SCH SCH SCH SCH  
WEATHER TYPE....RW RW RW RW RW RW RW  
TSTM COV........ SCH SCH SCH SCH SCH  
TEMP............86 83 78 74 72 72 71 70 68 66 63 62  
RH..............31 36 43 50 55 57 59 63 68 73 81 84  
20 FT WIND DIR..NE N NW W NW N N N N N N N  
20 FT WIND SPD..7 7 6 6 6 7 7 7 7 7 7 6  
20 FT WIND GUST.9 9 8 8 8 9 9 10 10 9 9 9  
   
MONDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT CLOUD). A CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.  
CWR.................0 PERCENT.  
LAL.................1 UNTIL 1300, THEN 3.  
MAX TEMPERATURE.....82-87.  
MIN HUMIDITY........38-43 PERCENT.  
WIND (20 FT)........NORTH WINDS 6 TO 9 MPH. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.  
MIXING HEIGHT.......100-600 FT AGL INCREASING TO 9400-10400 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 7 TO 12 MPH SHIFTING TO THE NORTHWEST  
6 TO 11 MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (2100-25500) INCREASING TO GOOD  
(67700-82800) IN THE AFTERNOON.  
HAINES INDEX........5 (MODERATE).  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........65 57 50 51 51 51 51 53 55 57 57 56  
WEATHER COV..... CHC CHC CHC CHC CHC CHC  
WEATHER TYPE.... RW RW RW RW RW RW  
TSTM COV........ CHC CHC CHC CHC CHC CHC  
TEMP............62 65 69 74 78 81 83 84 84 84 84 83  
RH..............84 75 68 57 50 44 41 40 40 40 40 41  
20 FT WIND DIR..N N N N N N N N NW NW NW N  
20 FT WIND SPD..6 6 6 6 6 7 7 8 9 9 9 9  
20 FT WIND GUST.8 10 12 10  
 

 
FORECASTER...TDK  
REQUESTED BY...FUELS SPC  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1814111.0/ABR  
.DELDT 08/05/18  
.EMAIL LELAND.BLACK@BIA.GOV  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab SD Page
The Nexlab MN Page Main Text Page