657  
FNUS73 KILX 241438  
FWSILX  
 
SPOT FORECAST FOR WEINBERG-KING...IDNR  
NATIONAL WEATHER SERVICE LINCOLN IL  
938 AM CDT FRI MAR 24 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON MARCH 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
 
 
SOUTHWEST WINDS OF 15 TO 20 MPH WILL BE GUSTING OVER 30 MPH AT  
TIMES TODAY. CLEAR SKIES IN THE MORNING WILL BEGIN GIVING WAY  
TO CLOUDS AS THE AFTERNOON PROGRESSES, AS A LINE OF SHOWERS AND  
THUNDERSTORMS BEGINS TO FORM OVER IOWA. WHILE A FEW SHOWERS  
CAN'T BE RULED OUT MID TO LATE AFTERNOON, THE BULK OF THE RAIN  
WILL BE HOLDING OFF UNTIL EVENING.  
 
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (20-30 PERCENT) THEN BECOMING PARTLY  
SUNNY (60-70 PERCENT). CHANCE OF SHOWERS LATE  
IN THE AFTERNOON.  
CHANCE OF PCPN......30 PERCENT.  
TEMPERATURE.........66 AT IGNITION...MAX 76.  
RH..................56 PERCENT AT IGNITION...MIN 39 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WINDS SOUTH AT 13 MPH AT IGNITION...OTHERWISE  
SOUTHWEST WINDS 12 TO 16 MPH WITH GUSTS TO  
AROUND 30 MPH.  
MIXING HEIGHT.......400 FT AGL AT IGNITION...INCREASING TO  
3400 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTH 18 TO 23 MPH SHIFTING TO THE WEST AROUND  
15 MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR /7100 KNOT-FT/ AT IGNITION. MAX...GOOD  
(52200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (CDT) 10 AM NOON 2 PM 4 PM  
SKY (%).........12 33 68 66  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 10 10  
TEMP............66 73 76 75  
RH..............56 43 39 41  
20 FT WIND......S 13 SW 16 SW 16 SW 13  
20 FT WIND GUST.25 30 30 25  
MIX HGT (FT)....400 2500 3400 2600  
TRANSPORT WIND..S 18 S 28 SW 30 SW 23  
HAINES INDEX....5 5 5 4  
VRATE KT-FT/10007 59 88 52  
SDSPL KT-FT/10007 59 88 52  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT). RAIN SHOWERS AND CHANCE  
OF THUNDERSTORMS.  
CHANCE OF PCPN......90 PERCENT.  
TEMPERATURE.........MIN 56.  
RH..................MAX 96 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHEAST WINDS 6 TO 8 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......200-1300 FT AGL.  
TRANSPORT WINDS.....NORTH 0 TO 7 MPH SHIFTING TO THE SOUTHEAST  
LATE IN THE EVENING, THEN INCREASING TO 7  
TO 15 MPH AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO FAIR (0-14800 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........81 96 95 96 96 94  
WEATHER COV.....CHANCE LIKELY DEFNTE DEFNTE DEFNTE DEFNTE  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........ CHANCE CHANCE CHANCE CHANCE CHANCE  
CHC OF PCPN (%).50 70 80 90 80 80  
TEMP............69 64 60 58 57 56  
RH..............57 73 87 93 96 96  
20 FT WIND......SW 8 S 6 S 6 SE 7 SE 7 SE 7  
20 FT WIND GUST.15 15 15 15 15 15  
MIX HGT (FT)....1300 400 200 900 1100 700  
TRANSPORT WIND..NW 7 N 0 E 3 S 13 S 14 SE 8  
HAINES INDEX....3 3 3 3 3 3  
VRATE KT-FT/10008 0 1 10 13 5  
SDSPL KT-FT/10008 0 1 10 13 5  
   
SATURDAY
 
 
SKY/WEATHER.........CLOUDY (90-100 PERCENT). RAIN SHOWERS AND A  
CHANCE OF THUNDERSTORMS.  
CHANCE OF PCPN......80 PERCENT.  
TEMPERATURE.........MAX 66.  
RH..................MIN 68 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHEAST WINDS 7 TO 8 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......600-1400 FT AGL.  
TRANSPORT WINDS.....SOUTH 3 TO 6 MPH SHIFTING TO THE NORTHEAST 6 TO  
14 MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (3000 KNOT-FT).  
SMOKE DISPERSAL.....POOR (3000 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........95 93 90 93 93 91  
WEATHER COV.....LIKELY LIKELY LIKELY LIKELY DEFNTE DEFNTE  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE  
CHC OF PCPN (%).70 70 70 70 80 80  
TEMP............56 56 59 64 66 64  
RH..............96 96 90 75 70 73  
20 FT WIND......SE 7 SE 7 SE 8 SE 8 SE 8 SE 7  
20 FT WIND GUST.15 15 15 15 15 15  
MIX HGT (FT)....600 900 1400 1300 1100 1000  
TRANSPORT WIND..SE 6 S 5 SW 3 E 6 NE 9 NE 13  
HAINES INDEX....3 3 3 3 3 3  
VRATE KT-FT/10003 4 4 7 9 11  
SDSPL KT-FT/10003 4 4 7 9 11  
 

 
FORECASTER...GEELHART  
REQUESTED BY...RAY GEROFF  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1705145.0/ILX  
.EMAIL RAY.GEROFF@ILLINOIS.GOV  
 
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