760  
FNUS73 KLOT 211333  
FWSLOT  
 
SPOT FORECAST FOR HOBART PRAIRIE BURN PILES...NATIONAL PARK SERVICE  
NATIONAL WEATHER SERVICE CHICAGO IL  
733 AM CST THU FEB 21 2019  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 CST ON FEBRUARY 21.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (815) 834-0666, IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
SURFACE HIGH PRESSURE WILL BUILD OVER THE REGION TODAY,  
RESULTING IN LIGHT WESTERLY WINDS THROUGH THE DAY.  
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY THEN  
BECOMING PARTLY CLOUDY.  
TEMPERATURE.........30 AT IGNITION...MAX 37.  
RH..................78 PERCENT AT IGNITION...MIN 59 PERCENT.  
WIND (20 FT)........WINDS WEST AT 8 MPH AT IGNITION...OTHERWISE  
WEST WINDS 6 TO 8 MPH.  
CHANCE OF PCPN......0 PERCENT.  
LAL.................NO TSTMS.  
MIXING HEIGHT.......1300 FT AGL AT IGNITION...OTHERWISE 1200-2400  
FT AGL.  
TRANSPORT WINDS.....WEST 9 TO 18 MPH.  
MIXING TEMP 1700FT..34 LATE IN THE MORNING.  
SMOKE DISPERSAL.....FAIR /19700 KNOT-FT/ AT IGNITION. MAX...FAIR  
/25400 KNOT-FT/ INCREASING TO GOOD (30200  
KNOT-FT) LATE IN THE MORNING, THEN DECREASING  
TO POOR TO FAIR (9300-18600 KNOT-FT) LATE IN  
THE AFTERNOON.  
 
TIME (CST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........37 36 34 33 36 39 41 44 47  
WEATHER COV.....  
WEATHER TYPE....  
TEMP............30 31 33 35 36 37 36 34 32  
RH..............78 75 69 64 61 59 61 66 72  
20 FT WIND DIR..W W W W W W W W W  
20 FT WIND SPD..8 8 8 8 8 8 7 6 6  
20 FT WIND GUST.13 13 13 13 13 13 10 8 7  
MIX HGT (KFT)...1.3 1.6 2.0 2.4 2.4 2.4 2.4 1.8 1.2  
TRANSP WIND DIR.270 270 270 270 270 270 270 270 260  
TRANSP WIND SPD.18 17 17 17 17 16 15 13 9  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0  
LAL.............1 1 1 1 1 1 1 1 1  
VRATE KT-FT/100020 25 31 37 35 33 30 19 9  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
TEMPERATURE.........MIN 22.  
RH..................MAX 88 PERCENT.  
WIND (20 FT)........WEST WINDS AROUND 5 MPH EARLY IN THE EVENING  
BECOMING LIGHT.  
CHANCE OF PCPN......0 PERCENT.  
LAL.................NO TSTMS.  
MIXING HEIGHT.......100-400 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 2 TO 8 MPH.  
MIXING TEMP 1700FT..N/A.  
SMOKE DISPERSAL.....POOR (200 KNOT-FT).  
 
TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........49 51 53 54 46 37 29 31 33 35 37 39  
WEATHER COV.....  
WEATHER TYPE....  
TEMP............30 29 28 28 28 27 26 25 24 23 22 22  
RH..............78 81 85 85 81 85 85 84 88 88 88 88  
20 FT WIND DIR..W W W W W NW NW N N N N NE  
20 FT WIND SPD..5 4 4 3 3 2 2 2 2 2 2 3  
20 FT WIND GUST.6 5 5  
MIX HGT (KFT)...0.4 0.3 0.2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1  
TRANSP WIND DIR.270 270 280 290 300 320 330 340 000 020 020 040  
TRANSP WIND SPD.8 7 7 6 5 3 2 2 2 2 2 3  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
VRATE KT-FT/10003 2 1 1 0 0 0 0 0 0 0 0  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY THEN  
BECOMING PARTLY CLOUDY.  
TEMPERATURE.........MAX 42.  
RH..................MIN 56 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING EAST 5 TO 7 MPH IN THE  
LATE MORNING AND AFTERNOON.  
CHANCE OF PCPN......0 PERCENT.  
LAL.................NO TSTMS.  
MIXING HEIGHT.......100-1500 FT AGL.  
TRANSPORT WINDS.....EAST 3 TO 12 MPH SHIFTING TO THE SOUTHEAST 13  
TO 16 MPH IN THE AFTERNOON.  
MIXING TEMP 1700FT..46 LATE IN THE MORNING.  
SMOKE DISPERSAL.....POOR (300 KNOT-FT) INCREASING TO POOR TO FAIR  
(11200-19700 KNOT-FT) IN THE AFTERNOON, THEN  
DECREASING TO POOR (5200 KNOT-FT) LATE IN THE  
AFTERNOON.  
 
TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........41 40 39 38 34 30 26 26 27 27 32 37  
WEATHER COV.....  
WEATHER TYPE....  
TEMP............23 24 26 29 32 35 38 41 42 42 40 37  
RH..............88 88 85 81 73 66 59 56 56 57 62 70  
20 FT WIND DIR..NE NE E E E E E E E E E E  
20 FT WIND SPD..3 4 4 5 5 6 6 6 7 7 7 6  
20 FT WIND GUST. 5 5 6 6 7 7 8 10 10 10 8  
MIX HGT (KFT)...0.1 0.1 0.1 0.1 0.6 1.0 1.5 1.4 1.3 1.3 0.9 0.5  
TRANSP WIND DIR.050 060 070 080 090 110 120 120 130 130 130 120  
TRANSP WIND SPD.3 3 5 6 8 12 14 16 16 16 15 13  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
VRATE KT-FT/10000 0 0 1 4 10 19 20 19 18 11 5  
 

 
FORECASTER...BIRK  
REQUESTED BY...BRANDON RAMIREZ  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1901765.0/LOT  
.DELDT 02/21/19  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab IL Page
The Nexlab IN Page Main Text Page