685  
FNUS73 KLOT 011313  
FWSLOT  
 
SPOT FORECAST FOR WEST BEACH RX...NPS  
NATIONAL WEATHER SERVICE CHICAGO IL  
813 AM CDT TUE APR 1 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 01.  
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
 
 
EAST-SOUTHEASTERLY WINDS ARE EXPECTED THROUGH TODAY, GRADUALLY  
INCREASING SOME THIS AFTERNOON WITH SOME GUSTS TO AROUND 20 MPH.  
CLOUDINESS WILL BE ON THE INCREASE, BUT NO PRECIPITATION IS  
EXPECTED TODAY.  
 
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY THEN  
BECOMING MOSTLY CLOUDY.  
TEMPERATURE.........38 AT IGNITION...MAX 46.  
RH..................50 PERCENT AT IGNITION...MIN 45 PERCENT.  
WIND (20 FT)........WINDS EAST AT 8 MPH AT IGNITION...OTHERWISE  
EAST WINDS 7 TO 10 MPH INCREASING TO SOUTHEAST  
12 TO 13 MPH LATE IN THE AFTERNOON.  
CHANCE OF PCPN......0 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 9 TO 13 MPH INCREASING TO AROUND 16  
MPH LATE IN THE AFTERNOON.  
MIXING HEIGHT.......2700 FT AGL AT IGNITION...OTHERWISE 2800 FT  
AGL.  
SMOKE DISPERSAL.....FAIR /21700 KNOT-FT/ AT IGNITION. MAX...GOOD  
/37000 KNOT-FT/.  
 
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........30 41 52 60 68 76 84  
WEATHER COV.....  
WEATHER TYPE....  
TEMP............38 41 43 44 45 46 46  
RH..............50 46 45 45 45 45 47  
20 FT WIND DIR..100 100 110 110 120 120 120  
20 FT WIND SPD..8 10 12 13 14 14 14  
20 FT WIND GUST.13 15 18 21 21 21 21  
MIX HGT (KFT)...2.7 2.8 2.7 2.7 2.4 1.8 0.9  
TRANSP WIND DIR.120 110 110 110 110 140 140  
TRANSP WIND SPD.9 13 13 16 16 16 16  
CHC OF PCPN (%).0 0 0 0 0 0 0  
VRATE KT-FT/1K..22 31 31 37 33 27 13  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS IN THE  
EVENING, THEN SHOWERS AND THUNDERSTORMS  
OVERNIGHT.  
TEMPERATURE.........MIN 42.  
RH..................MAX 83 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 12 TO 15 MPH INCREASING TO 17  
TO 20 MPH WITH GUSTS TO AROUND 35 MPH LATE IN  
THE EVENING. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS AFTER 3 AM.  
CHANCE OF PCPN......80 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 16 TO 21 MPH INCREASING TO 29 TO 33  
MPH.  
MIXING HEIGHT.......700 FT AGL.  
SMOKE DISPERSAL.....GOOD (35900 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (9900 KNOT-FT) LATE IN THE  
NIGHT.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........92 100 100 100 100 100 100 100 100 100 100 100  
WEATHER COV..... SCH CHC CHC LKY LKY DEF DEF  
WEATHER TYPE.... RW RW RW RW RW RW RW  
TEMP............46 44 43 43 43 43 43 42 42 42 42 43  
RH..............49 54 58 60 62 65 65 70 73 73 76 76  
20 FT WIND DIR..120 120 120 120 120 120 130 130 130 130 130 130  
20 FT WIND SPD..14 13 14 15 16 18 18 20 20 21 21 22  
20 FT WIND GUST.22 15 20 24 25 28 30 32 33 33 35 35  
MIX HGT (KFT)...0.7 0.7 0.8 0.7 0.8 0.9 0.9 0.8 0.8 0.9 0.9 1.3  
TRANSP WIND DIR.130 130 130 130 130 130 130 130 130 130 120 130  
TRANSP WIND SPD.16 20 20 21 22 25 25 23 24 25 29 33  
CHC OF PCPN (%).10 10 10 10 10 20 30 40 60 70 80 80  
VRATE KT-FT/1K..10 12 13 13 15 19 19 17 18 20 23 36  
   
WEDNESDAY
 
 
SKY/WEATHER.........CLOUDY. THUNDERSTORMS IN THE MORNING AND EARLY  
AFTERNOON. RAIN SHOWERS THROUGH THE DAY.  
THUNDERSTORMS LIKELY LATE IN THE AFTERNOON.  
TEMPERATURE.........MAX 67.  
RH..................MIN 73 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 18 TO 21 MPH SHIFTING TO THE  
SOUTH 21 TO 22 MPH LATE IN THE AFTERNOON. GUSTS  
UP TO 37 MPH. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE MORNING AND EARLY  
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.  
CHANCE OF PCPN......100 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 30 TO 35 MPH SHIFTING TO THE SOUTH 26  
TO 29 MPH IN THE LATE MORNING AND EARLY  
AFTERNOON, THEN INCREASING TO 33 TO 36 MPH LATE  
IN THE AFTERNOON.  
MIXING HEIGHT.......2400 FT AGL.  
SMOKE DISPERSAL.....FAIR (19800 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO EXCELLENT (72000 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........100 100 100 100 100 100 100 100 100 100 100 92  
WEATHER COV.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TEMP............44 44 47 49 51 54 58 62 65 66 67 67  
RH..............76 82 79 83 86 86 87 81 78 75 73 75  
20 FT WIND DIR..130 140 150 160 170 180 180 180 190 200 200 200  
20 FT WIND SPD..23 23 22 21 21 20 21 21 22 23 24 23  
20 FT WIND GUST.35 35 35 32 32 31 32 33 35 36 37 36  
MIX HGT (KFT)...1.2 1.2 1.1 0.9 0.8 1.1 1.5 1.8 2.0 2.2 2.4 1.9  
TRANSP WIND DIR.140 140 150 170 170 190 190 190 200 200 200 200  
TRANSP WIND SPD.33 35 31 30 29 28 26 29 33 36 35 33  
CHC OF PCPN (%).90 100 100 100 100 100 100 100 100 100 100 100  
VRATE KT-FT/1K..35 37 29 23 20 27 33 45 58 67 72 55  
 

 
FORECASTER...IZZI  
REQUESTED BY...ABIGAIL ZASTAWNY  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2508577.0/LOT  
.DELDT 04/01/25  
.FORMATTERVERSION 2.0.0  
 
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