822  
FNUS73 KLOT 211245  
FWSLOT  
 
SPOT FORECAST FOR HOBART PRAIRIE GROVE RX...INDIANA DUNES  
NATIONAL WEATHER SERVICE CHICAGO IL  
645 AM CST TUE NOV 21 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 CST ON NOVEMBER 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
 
A STRONG COLD FRONT WILL MOVE ACROSS NORTHWEST  
INDIANA LATE THIS MORNING SHIFTING SOUTHWEST WINDS TO THE NORTHWEST.  
THERE IS A CHANCE OF RAIN SHOWERS EARLY THIS AFTERNOON...BUT  
CONFIDENCE AS TO HOW WIDESPREAD OR HOW LONG THESE MAY LAST IS LOW.  
TEMPERATURES WILL SLOWLY BE FALLING THIS AFTERNOON AS COLDER AIR  
SPREADS INTO THE REGION. NORTHWEST WINDS WILL SLOWLY DIMINISH THIS  
EVENING WITH CLEARING SKIES. HIGH PRESSURE WILL MOVE ACROSS THE AREA  
WEDNESDAY WITH DRY CONDITIONS AND LIGHT WESTERLY WINDS.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE.  
CHANCE OF LIGHT RAIN EARLY IN THE AFTERNOON.  
TEMPERATURE.........42 AT IGNITION...MAX 45...THEN FALLING TEMPS THIS  
AFTERNOON.  
RH..................70 PERCENT AT IGNITION...MIN 55 PERCENT.  
WIND (20 FT)........WINDS SOUTHWEST AT 13 MPH AT  
IGNITION...SHIFTING NORTHWEST 12 TO 15 MPH LATE  
THIS MORNING. GUSTS UP TO 30 MPH IN THE LATE  
MORNING AND AFTERNOON.  
CHANCE OF PCPN......40 PERCENT.  
MIXING HEIGHT.......1100 FT AGL AT IGNITION...INCREASING TO  
3200-4500 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....NORTHWEST 24 TO 28 MPH.  
MIXING TEMP 1700FT..43.  
SMOKE DISPERSAL.....FAIR /25500 KNOT-FT/ AT IGNITION.  
MAX...EXCELLENT /67200 KNOT-FT/ INCREASING TO  
EXCELLENT (76100 KNOT-FT) IN THE AFTERNOON.  
 
TIME (CST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........80 84 89 94 93 92 91 76 62  
WEATHER COV..... CHC CHC SCH  
WEATHER TYPE.... RN RN RN  
TEMP............42 44 45 45 44 42 40 38 36  
RH..............70 65 60 55 57 57 57 59 61  
20 FT WIND DIR..SW W W NW NW NW NW NW NW  
20 FT WIND SPD..13 13 14 14 15 15 15 14 12  
20 FT WIND GUST.25 25 25 30 30 30 30 25 20  
MIX HGT (KFT)...1.1 1.8 2.5 3.2 3.6 4.1 4.5 4.4 4.3  
TRANSP WIND DIR.240 260 280 300 300 300 310 310 320  
TRANSP WIND SPD.28 28 25 24 24 24 24 25 26  
CHC OF PCPN (%).0 10 10 30 40 20 10 0 0  
VRATE KT-FT/100026 43 55 67 76 85 94 96 99  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
TEMPERATURE.........MIN 25.  
RH..................MAX 74 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 7 TO 10 MPH.  
CHANCE OF PCPN......0 PERCENT.  
MIXING HEIGHT.......2700-4200 FT AGL DECREASING TO 400-1900 FT AGL  
LATE IN THE EVENING.  
TRANSPORT WINDS.....NORTHWEST 22 TO 28 MPH DECREASING TO 10 TO 18  
MPH LATE IN THE EVENING.  
MIXING TEMP 1700FT..N/A.  
SMOKE DISPERSAL.....GOOD TO EXCELLENT (51900-100400 KNOT-FT)  
DECREASING TO POOR TO GOOD (3400-30900 KNOT-FT)  
LATE IN THE EVENING.  
 
TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........47 39 31 22 22 21 21 20 19 18 19 21  
WEATHER COV.....  
WEATHER TYPE....  
TEMP............34 33 32 32 31 30 29 29 28 28 27 26  
RH..............64 63 63 63 63 66 69 69 71 68 68 71  
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW NW NW  
20 FT WIND SPD..10 9 9 9 8 8 7 7 6 6 6 6  
20 FT WIND GUST.15 15 15 15 15 10 10 10 10 10 10 10  
MIX HGT (KFT)...4.2 4.0 3.7 3.5 2.7 1.9 1.1 1.0 0.9 0.7 0.6 0.4  
TRANSP WIND DIR.320 320 330 330 330 320 320 320 330 330 320 320  
TRANSP WIND SPD.28 28 28 25 22 18 15 14 14 14 13 10  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
VRATE KT-FT/1000100 95 90 78 52 31 15 12 10 9 6 3  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
TEMPERATURE.........MAX 36.  
RH..................MIN 45 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH.  
CHANCE OF PCPN......0 PERCENT.  
MIXING HEIGHT.......200-1600 FT AGL INCREASING TO 1100-2800 FT AGL  
IN THE LATE MORNING AND AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 6 TO 9 MPH.  
MIXING TEMP 1700FT..31.  
SMOKE DISPERSAL.....POOR TO FAIR (1500-17000 KNOT-FT).  
 
TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........23 22 21 20 17 11 8 10 13 15 18 25  
WEATHER COV.....  
WEATHER TYPE....  
TEMP............25 26 27 29 31 33 34 35 36 35 33 31  
RH..............74 71 68 63 58 53 51 49 45 47 53 58  
20 FT WIND DIR..NW NW NW W W W W W W W W SW  
20 FT WIND SPD..6 6 6 6 6 6 6 6 6 6 5 5  
20 FT WIND GUST.10 10  
MIX HGT (KFT)...0.2 0.9 1.6 2.4 2.5 2.7 2.8 2.8 2.7 2.7 1.9 1.1  
TRANSP WIND DIR.320 310 300 300 290 270 260 250 240 240 230 220  
TRANSP WIND SPD.9 8 8 7 7 7 7 7 7 7 7 6  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
VRATE KT-FT/10002 6 12 14 15 16 17 17 16 16 11 6  
 

 
FORECASTER...SULLIVAN  
REQUESTED BY...NEAL MULCONREY  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1719060.0/LOT  
 
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