529  
FNUS73 KMKX 011009  
FWSMKX  
 
SPOT FORECAST FOR YORK PRAIRIE MARBLESEED...WISCONSIN DNR  
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI  
509 AM CDT TUE APR 1 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 1300 CDT ON APRIL 01.  
 
PLEASE CONTACT THE NATIONAL WEATHER SERVICE IF CONDITIONS BECOME  
UNREPRESENTATIVE OR IF YOU HAVE QUESTIONS/CONCERNS ABOUT THIS FORECAST.  
   
DISCUSSION  
 
EAST TO SOUTHEAST WINDS ARE EXPECTED TODAY, GENERALLY FROM  
BETWEEN 110 AND 130 DEGREES. SPEEDS WILL BE BETWEEN 10 AND 15 MPH  
DURING THE LATE MORNING AND EARLY AFTERNOON, INCREASING TO 15-20  
MPH BY LATER AFTERNOON.  
 
RH WILL FALL TO BETWEEN 35 AND 40 PERCENT DURING THE LATE MORNING  
AND EARLY AFTERNOON. THERE IS A CHANCE FOR SNOW OR A RAIN/SNOW  
MIX LATE IN THE AFTERNOON INTO EARLY EVENING AS WELL.  
   
REST OF TODAY  
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). SLIGHT CHANCE OF  
RAIN AND SNOW LATE IN THE AFTERNOON. CHANCE OF  
RAIN AND SNOW LATE IN THE AFTERNOON.  
TEMPERATURE.........44 AT IGNITION...MAX 46.  
RH..................43 PERCENT AT IGNITION...MIN 37 PERCENT.  
WIND (20 FT)........WINDS SOUTHEAST AT 11 MPH AT  
IGNITION...OTHERWISE SOUTHEAST WINDS 12 TO 13  
MPH WITH GUSTS TO AROUND 21 MPH.  
MIXING HEIGHT.......3300 FT AGL AT IGNITION...OTHERWISE 3700 FT  
AGL.  
TRANSPORT WINDS.....SOUTHEAST 21 TO 25 MPH.  
SMOKE DISPERSAL.....GOOD /59900 KNOT-FT/ AT IGNITION.  
MAX...EXCELLENT /75600 KNOT-FT/.  
 
TIME (CDT) 1PM 2PM 3PM 4PM 5PM  
SKY (%).........75 80 90 94 94  
WEATHER COV..... SCH CHC  
WEATHER TYPE.... RS RS  
TSTM COV........  
TEMP............44 44 45 44 42  
RH..............43 43 38 39 43  
20 FT WIND DIR..SE SE SE SE SE  
20 FT WIND SPD..11 12 12 13 13  
20 FT WIND GUST.18 18 18 19 21  
MIX HGT (KFT)...3.3 3.6 3.7 3.6 3.3  
TRANSP WIND DIR.SE SE SE SE SE  
TRANSP WIND SPD.21 22 23 24 25  
SDSPL KT-FT/100060 68 73 76 72  
   
TONIGHT  
 
SKY/WEATHER.........CLOUDY (90-100 PERCENT). RAIN AND SNOW LIKELY  
IN THE EVENING, THEN RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS OVERNIGHT.  
TEMPERATURE.........MIN 34.  
RH..................MAX 100 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 14 TO 16 MPH WITH GUSTS TO  
AROUND 29 MPH. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS AFTER 3 AM.  
MIXING HEIGHT.......900 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 22 TO 29 MPH.  
SMOKE DISPERSAL.....EXCELLENT (65900 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO FAIR (18900 KNOT-FT) LATE IN THE  
NIGHT.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........98 100 94 90 96 93 96 100 100 100 100 100  
WEATHER COV.....LKY CHC SCH SCH SCH CHC LKY LKY DEF DEF DEF DEF  
WEATHER TYPE....RS RS SN RS RS RS RN RW RW RW RW RW  
TSTM COV........ SCH SCH  
TEMP............38 36 35 36 37 38 39 39 39 39 39 39  
RH..............54 61 66 67 67 73 76 82 89 92 92 96  
20 FT WIND DIR..E E E E E E SE SE SE SE SE SE  
20 FT WIND SPD..14 14 14 15 14 14 14 15 15 16 16 16  
20 FT WIND GUST.22 23 24 24 24 25 25 28 29 29 29 28  
MIX HGT (KFT)...2.9 1.5 1.3 1.0 0.9 1.0 1.0 1.0 1.1 1.2 1.2 1.1  
TRANSP WIND DIR.SE SE SE SE SE SE SE SE SE SE SE SE  
TRANSP WIND SPD.26 25 29 25 28 24 22 23 25 26 28 25  
SDSPL KT-FT/100066 33 32 21 23 21 19 20 24 28 30 23  
   
WEDNESDAY  
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). RAIN SHOWERS AND  
CHANCE OF THUNDERSTORMS.  
TEMPERATURE.........MAX 68.  
RH..................MIN 62 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 13 TO 15 MPH WITH GUSTS TO  
AROUND 30 MPH SHIFTING TO THE SOUTH 14 TO 16  
MPH WITH GUSTS TO AROUND 26 MPH IN THE  
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS EARLY IN THE MORNING. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......3200 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 21 TO 25 MPH SHIFTING TO THE  
SOUTHWEST 24 TO 33 MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (16200 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO EXCELLENT (93600 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........100 100 100 99 99 99 95 88 81 71 63 52  
WEATHER COV.....DEF DEF DEF DEF DEF DEF DEF LKY LKY LKY CHC CHC  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........SCH CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC  
TEMP............39 39 40 42 45 47 53 57 60 64 67 66  
RH..............96 96 100 96 96 100 89 86 84 75 65 63  
20 FT WIND DIR..E E SE SE SE SE SE S S S SW SW  
20 FT WIND SPD..15 15 14 13 13 13 13 14 15 16 16 15  
20 FT WIND GUST.30 26 25 22 21 21 24 24 25 26 26 24  
MIX HGT (KFT)...1.0 0.9 0.9 1.0 0.9 1.0 1.8 2.5 2.8 3.0 3.2 2.6  
TRANSP WIND DIR.SE SE SE SE SE S S S SW SW SW SW  
TRANSP WIND SPD.24 24 21 25 23 22 24 26 29 31 33 30  
SDSPL KT-FT/100022 20 16 22 18 20 37 58 69 81 94 68  
 
 
FORECASTER...DDV  
REQUESTED BY...SAMUEL SMYRK  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2508503.0/MKX  
.DELDT 04/01/25  
.FORMATTERVERSION 2.0.0  
.EMAIL SAMUEL.SMYRK@WISCONSIN.GOV  
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