858  
FNUS73 KMPX 211331  
FWSMPX  
 
SPOT FORECAST FOR UNIT 12 SLASH PILES...FWS  
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN  
831 AM CDT WED JUN 21 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON JUNE 21.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
DRY WEATHER EXPECTED TODAY WITH A FEW SHOWERS AND  
THUNDERSTORMS POSSIBLE NEARBY TONIGHT. SOUTHEAST WINDS WILL BE  
SOMEWHAT GUSTY TODAY. HUMIDITY WILL REMAIN MODERATE.  
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY.  
TEMPERATURE.........64 AT IGNITION...MAX 78.  
RH..................70 PERCENT AT IGNITION...MIN 48 PERCENT.  
WIND (20 FT)........WINDS SOUTHEAST AT 5 MPH AT  
IGNITION...OTHERWISE SOUTHEAST WINDS 5 TO 9  
MPH. GUSTS UP TO 20 MPH EARLY IN THE AFTERNOON.  
MIXING HEIGHT.......2200 FT AGL AT IGNITION...OTHERWISE 2200-3700  
FT AGL INCREASING TO 4100-4700 FT AGL LATE IN  
THE MORNING.  
TRANSPORT WINDS.....SOUTHEAST 14 TO 23 MPH SHIFTING TO THE SOUTH  
AROUND 25 MPH LATE IN THE AFTERNOON.  
MIXING WINDS........SOUTHEAST 14 TO 23 MPH SHIFTING TO THE SOUTH  
AROUND 25 MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR /26200 KNOT-FT/ AT IGNITION.  
MAX...EXCELLENT /75200 KNOT-FT/ INCREASING TO  
EXCELLENT (83000 KNOT-FT) LATE IN THE  
AFTERNOON.  
HAINES INDEX........4 OR LOW AT IGNITION...MAX 5.  
 
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM  
TEMP............64 67 70 72 74 76 77 78 78 78  
RH..............70 65 59 55 51 48 48 48 50 52  
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE S  
20 FT WIND SPD..5 6 6 7 8 9 8 8 7 7  
20 FT WIND GUST. 10 10 15 15 20 20 15 10  
MIX HGT (KFT)...2.2 3.2 3.7 4.2 4.7 4.7 4.6 4.6 4.4 4.1  
TRANSP WIND DIR.SE SE SE SE SE SE SE SE SE S  
TRANSP WIND SPD.14 16 16 16 16 17 18 21 23 25  
MIXING WIND DIR.SE SE SE SE SE SE SE SE SE S  
MIXING WIND SPD.14 16 16 16 16 17 18 21 23 25  
HAINES INDEX....4 5 4 4 3 3 3 3 3 3  
SDSPL KT-FT/100026 45 53 58 63 68 75 83 87 90  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN  
BECOMING PARTLY CLOUDY. ISOLATED SHOWERS AND  
THUNDERSTORMS IN THE EVENING. PATCHY FOG IN THE  
LATE EVENING AND OVERNIGHT. CHANCE OF  
PRECIPITATION 20 PERCENT.  
TEMPERATURE.........MIN 59.  
RH..................MAX 100 PERCENT.  
WIND (20 FT)........SOUTH WINDS 5 TO 6 MPH IN THE EVENING BECOMING  
LIGHT, THEN BECOMING NORTHWEST AROUND 5 MPH  
AFTER MIDNIGHT BECOMING LIGHT. GUSTY AND  
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN  
THE EVENING.  
MIXING HEIGHT.......2100-3900 FT AGL DECREASING TO 300-1500 FT AGL  
IN THE LATE EVENING AND OVERNIGHT.  
TRANSPORT WINDS.....SOUTH 17 TO 26 MPH BECOMING NORTHWEST 7 TO 13  
MPH LATE IN THE EVENING.  
MIXING WINDS........SOUTH 17 TO 26 MPH BECOMING NORTHWEST 7 TO 13  
MPH LATE IN THE EVENING.  
SMOKE DISPERSAL.....GOOD TO EXCELLENT (39300-88300 KNOT-FT)  
DECREASING TO POOR TO FAIR (1900-22200 KNOT-FT)  
IN THE LATE EVENING AND OVERNIGHT.  
 
TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM  
TEMP............76 71 66 63 61 59  
RH..............58 73 87 93 97 100  
20 FT WIND......S 6 S 6 S 5 SW 4 W 5 NW 5  
20 FT WIND GUST.10 10 5  
MIX HGT (FT)....3900 2700 1500 300 300 400  
TRANSPORT WIND..S 26 S 24 S 17 SW 9 W 10 NW 9  
MIXING WIND.....S 26 S 24 S 17 SW 9 W 10 NW 9  
HAINES INDEX....3 3 3 3 3 3  
SDSPL KT-FT/100088 57 22 2 2 3  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG EARLY IN THE MORNING.  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE LATE  
MORNING AND AFTERNOON. CHANCE OF PRECIPITATION  
40 PERCENT.  
TEMPERATURE.........MAX 74.  
RH..................MIN 51 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 6 MPH IN THE  
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE LATE MORNING AND  
AFTERNOON.  
MIXING HEIGHT.......600-1600 FT AGL INCREASING TO 2600-4500 FT AGL  
IN THE LATE MORNING AND AFTERNOON.  
TRANSPORT WINDS.....NORTHWEST 5 TO 14 MPH SHIFTING TO THE WEST 10  
TO 16 MPH IN THE AFTERNOON.  
MIXING WINDS........NORTHWEST 5 TO 14 MPH SHIFTING TO THE WEST 10  
TO 16 MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO GOOD (2700-42700 KNOT-FT) INCREASING TO  
FAIR TO EXCELLENT (24500-64000 KNOT-FT) IN THE  
AFTERNOON.  
HAINES INDEX........4 TO 6 OR LOW TO OR HIGH.  
 
TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM  
TEMP............60 67 72 73 73 74  
RH..............93 70 57 53 53 51  
20 FT WIND......N 3 NW 4 NW 4 W 4 W 5 W 6  
20 FT WIND GUST.5 5 5 5  
MIX HGT (FT)....600 1300 2600 4500 3400 3100  
TRANSPORT WIND..N 6 NW 5 NW 10 W 16 W 13 W 10  
MIXING WIND.....N 6 NW 5 NW 10 W 16 W 13 W 10  
HAINES INDEX....4 5 5 4 5 5  
SDSPL KT-FT/10003 6 22 64 36 28  
 

 
FORECASTER...BORGHOFF  
REQUESTED BY...KRIS LARSON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1711377.0/MPX  
.EMAIL KRIS_LARSON@FWS.GOV  
 
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