541  
FNUS73 KDLH 251546  
FWSDLH  
 
SPOT FORECAST FOR ST.CROIX COUNTY X...BIA-GREAT LAKES AGENCY  
NATIONAL WEATHER SERVICE DULUTH MN  
1046 AM CDT THU MAY 25 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON MAY 25.  
IF THERE ARE QUESTIONS OR CONCERNS WITH THIS FORECAST...  
PLEASE CALL THE NATIONAL WEATHER SERVICE.  
   
DISCUSSION
 
 
AN AREA OF HIGH PRESSURE NEAR THE BURN SITE THIS MORNING WILL  
MOVE EAST THIS AFTERNOON. THIS WILL ALLOW A LIGHT SOUTHEAST WIND  
TO BECOME SOUTHERLY IN THE AFTERNOON. CLOUDS WILL BE ON THE  
INCREASE THROUGH THE DAY AHEAD OF A SYSTEM THAT WILL BRING IN  
SHOWERS TONIGHT.  
 
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY.  
MAX TEMPERATURE.....AROUND 70.  
MIN HUMIDITY........51 PERCENT.  
WIND (20 FT)........WEST WINDS AROUND 5 MPH SHIFTING TO THE SOUTH  
IN THE AFTERNOON.  
MIXING HEIGHT.......6300 FT AGL INCREASING TO 6900 FT AGL LATE IN  
THE AFTERNOON.  
TRANSPORT WINDS.....SOUTH 15 TO 20 MPH.  
SMOKE DISPERSAL.....GOOD TO EXCELLENT (49900-63400 KNOT-FT)  
INCREASING TO EXCELLENT (75500-104000 KNOT-FT)  
IN THE AFTERNOON.  
 
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY COVER.......MC MC MC MC MC MC MC  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............66 68 66 66 67 67 67  
RH..............55 48 52 52 52 52 52  
20 FT WIND DIR..SE SE SE SE S S S  
20 FT WIND SPD..5 5 5 5 5 5 5  
20 FT WIND GUST. 6 7 7 7 7  
MIX HGT (KFT)...4.6 4.9 5.3 5.8 6.3 6.9 6.3  
TRANSP WIND DIR.SE SE SE SE S S S  
TRANSP WIND SPD.15 15 15 15 15 15 20  
SDSPL KT-FT/100050 63 76 87 96 104 99  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN  
THE EVENING. A CHANCE OF SHOWERS AFTER  
MIDNIGHT, THEN A SLIGHT CHANCE OF SHOWERS AFTER  
MIDNIGHT. CHANCE OF SHOWERS 30 PERCENT.  
MIN TEMPERATURE.....AROUND 51.  
MAX HUMIDITY........96 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS AROUND 5 MPH EARLY IN THE  
EVENING BECOMING LIGHT, THEN BECOMING SOUTHEAST  
AROUND 5 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......5800 FT AGL DECREASING TO 300 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 20 MPH.  
SMOKE DISPERSAL.....EXCELLENT (78000-90900 KNOT-FT) DECREASING TO  
POOR TO FAIR (1400-16200 KNOT-FT).  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY COVER.......MCLDY MCLDY MCLDY CLOUDY CLOUDY CLOUDY  
WEATHER COV..... S CHC S CHC CHANCE S CHC  
WEATHER TYPE....NONE RNSHWR RNSHWR RNSHWR RNSHWR NONE  
TSTM COV........  
TEMP............69 64 59 56 54 53  
RH..............49 58 72 80 83 89  
20 FT WIND......S 5 S 5 SE 0 SE 0 SE 5 SE 5  
20 FT WIND GUST.6 3 3  
MIX HGT (FT)....5800 3600 300 300 300 300  
TRANSPORT WIND..S 20 S 15 S 5 S 10 SE 10 SE 10  
SDSPL KT-FT/100091 43 2 2 2 2  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS EARLY  
IN THE MORNING, THEN A CHANCE OF SHOWERS. A  
SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE  
AFTERNOON. CHANCE OF PRECIPITATION 40 PERCENT.  
MAX TEMPERATURE.....AROUND 71.  
MIN HUMIDITY........59 PERCENT.  
WIND (20 FT)........SOUTH WINDS AROUND 5 MPH INCREASING TO AROUND  
10 MPH IN THE LATE MORNING AND AFTERNOON. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS  
EARLY IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (10600 KNOT-FT) INCREASING TO EXCELLENT  
(71700-90200 KNOT-FT).  
 
TIME (CDT) 6 AM 10 AM 2 PM  
SKY COVER.......MCLDY MCLDY MCLDY  
WEATHER COV.....S CHC CHANCE CHANCE  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR  
TSTM COV........ S CHC  
TEMP............52 63 69  
RH..............96 78 63  
20 FT WIND......SE 5G6 S 10G11 S 10G11  
SDSPL KT-FT/10002 37 89  
 

 
FORECASTER...GREG  
REQUESTED BY...DAVE PERGOLSKI  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1710071.0/DLH  
.EMAIL DAVID.PERGOLSKI@BIA.GOV  
 
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