080  
FNUS73 KILX 241453  
FWSILX  
 
SPOT FORECAST FOR WEINBERG KING STATE PARK...IDNT  
NATIONAL WEATHER SERVICE LINCOLN IL  
953 AM CDT THU AUG 24 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON AUGUST 24.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (217) 732-4029 IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
AN UPPER LEVEL DISTURBANCE WILL BRING SOME CLOUDS  
AND SPRINKLES TO THE AREA THIS MORNING OR EARLY AFTERNOON, BUT THE  
RAIN WILL BE TOO LIGHT TO WET THE GROUND. NORTH TO NORTHEAST  
WINDS OF 10 MPH OR LESS ARE EXPECTED TODAY. THE MIXING HEIGHT THIS  
MORNING IS VERY LOW AND WOULD TRAP SMOKE NEAR THE GROUND FOR THE  
NEXT HOUR OR SO, BUT THE MIXING HEIGHT WILL INCREASE SIGNIFICANTLY  
BETWEEN 11 AM AND NOON AND ALLOW BETTER SMOKE DISPERSION.  
OTHERWISE...QUIET WEATHER AND GENERALLY LIGHT WINDS WILL PERSIST  
INTO THE WEEKEND.  
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). ISOLATED  
SPRINKLES LATE IN THE MORNING.  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........54 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING NORTHEAST AROUND 5 MPH  
LATE IN THE AFTERNOON.  
MIXING HEIGHT.......400-1800 FT AGL INCREASING TO 5300-5800 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 5 TO 7 MPH.  
SMOKE DISPERSAL.....POOR EARLY INCREASING TO GOOD (1700-35000 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
 
TIME (CDT) 10 AM NOON 2 PM 4 PM  
SKY (%).........64 57 55 52  
WEATHER COV.....ISOLTD ISOLTD  
WEATHER TYPE....RNSHWR RNSHWR NONE NONE  
CHC OF PCPN (%).0 0 0 0  
TEMP............68 73 76 77  
RH..............76 61 54 54  
20 FT WIND......SE 2 E 2 NE 3 NE 5  
20 FT WIND GUST. 5 5  
MIX HGT (FT)....400 3600 5700 5600  
TRANSPORT WIND..N 5 N 7 N 7 N 7  
HAINES INDEX....4 4 4 4  
VRATE KT-FT/10002 21 34 34  
SDSPL KT-FT/10002 21 34 34  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (50-60 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MIN TEMPERATURE.....AROUND 57.  
MAX HUMIDITY........93 PERCENT.  
WIND (20 FT)........EAST WINDS AROUND 5 MPH EARLY IN THE EVENING  
BECOMING LIGHT, THEN BECOMING EAST AROUND 5 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......3900-4800 FT AGL DECREASING TO 0-500 FT AGL.  
TRANSPORT WINDS.....EAST 7 TO 14 MPH.  
SMOKE DISPERSAL.....POOR TO GOOD (0-33400 KNOT-FT).  
SMOKE DISPERSAL.....POOR TO GOOD (0-33400 KNOT-FT).  
HAINES INDEX........3 TO 4 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH TO OR LOW POTENTIAL FOR  
LARGE PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........47 46 47 50 52 55  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
CHC OF PCPN (%).0 0 0 0 0 0  
TEMP............76 71 66 64 61 59  
RH..............56 68 78 81 84 90  
20 FT WIND......E 5 E 3 E 3 E 3 E 5 E 5  
20 FT WIND GUST. 5 5 5  
MIX HGT (FT)....4800 2600 200 100 400 500  
TRANSPORT WIND..NE 8 NE 8 E 7 E 9 E 12 E 14  
HAINES INDEX....4 4 4 4 4 3  
VRATE KT-FT/100033 18 1 1 4 6  
SDSPL KT-FT/100033 18 1 1 4 6  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 78.  
MIN HUMIDITY........54 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 5 TO 6 MPH.  
MIXING HEIGHT.......300-2000 FT AGL INCREASING TO 2700-4100 FT AGL  
LATE IN THE MORNING.  
TRANSPORT WINDS.....EAST 7 TO 12 MPH.  
SMOKE DISPERSAL.....POOR TO FAIR (2400-28700 KNOT-FT).  
SMOKE DISPERSAL.....POOR TO FAIR (2400-28700 KNOT-FT).  
HAINES INDEX........2 TO 4 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH TO OR LOW POTENTIAL FOR  
LARGE PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........58 57 46 44 42 39  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
CHC OF PCPN (%).0 0 0 0 0 0  
TEMP............58 61 69 74 76 78  
RH..............90 84 68 59 56 54  
20 FT WIND......E 5 E 5 E 6 SE 6 SE 6 SE 6  
20 FT WIND GUST. 10 10  
MIX HGT (FT)....300 800 2000 3400 4100 3800  
TRANSPORT WIND..E 9 E 8 E 12 E 9 E 8 E 8  
HAINES INDEX....3 3 2 3 3 4  
VRATE KT-FT/10003 6 20 27 29 26  
SDSPL KT-FT/10003 6 20 27 29 26  
 

 
FORECASTER...BAK  
REQUESTED BY...SPENCER WOODWARD  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1714791.0/ILX  
.EMAIL SPENCER.WOODWARD@ILLINOIS.GOV  
 
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