453  
FNUS73 KGRB 121341  
FWSGRB  
 
SPOT FORECAST FOR DUNBAR BARRENS UNIT 1...DNR  
NATIONAL WEATHER SERVICE GREEN BAY WI  
841 AM CDT WED AUG 12 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 CDT ON AUGUST 13.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS OR CONCERNS WITH  
THIS FORECAST.  
   
DISCUSSION  
 
THERE IS A 30-40% FOR SHOWERS AND THUNDERSTORMS NEAR THE BURN SITE  
LATE THURSDAY MORNING THROUGH THURSDAY EVENING, HOWEVER, IT WILL  
NO RAIN DURING THAT ENTIRE PERIOD. RAINFALL AMOUNTS ARE EXPECTED  
TO RANGE FROM AROUND 0.1-0.25 THURSDAY, IF A SHOWER OF STORM DOES  
PASS OVER THE BURN SITE.  
 
FRIDAY DRY CONDITIONS ARE FORECAST TO PREVAIL THROUGH THE DAY AT  
THE BURN SITE. TEMPERATURES WILL START IN THE MIDDLE 50S AND WARM  
INTO THE UPPER 70S BY THE AFTERNOON. RHS ARE FORECAST TO FALL NEAR  
50 PERCENT FRIDAY AFTERNOON, HOWEVER, IF RAINFALL IS TOWARDS THE  
HIGHER END OF THE EXPECTED RANGE THURSDAY RHS MAY NOT FALL THAT  
LOW. LIGHT NORTHEASTERLY WINDS ARE EXPECTED FRIDAY MORNING AND  
WILL VEER AROUND TO THE SOUTHEAST BY AFTERNOON.  
   
THURSDAY  
 
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF SHOWERS  
LATE IN THE MORNING. SLIGHT CHANCE OF SHOWERS  
AND THUNDERSTORMS LATE IN THE AFTERNOON, THEN  
CHANCE OF SHOWERS AND THUNDERSTORMS LATE IN THE  
AFTERNOON.  
MAX TEMPERATURE.....AROUND 79.  
MIN HUMIDITY........56 PERCENT.  
WIND (20 FT)........LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.  
 
TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........61 51 67 75 65 61 64 65 53 54  
WEATHER COV..... CHC CHC SCH CHC CHC  
WEATHER TYPE.... RW RW RW RW RW  
TSTM COV........ SCH CHC CHC  
TEMP............63 66 71 73 75 76 77 77 78 77  
RH..............87 84 71 66 62 60 58 58 56 58  
20 FT WIND DIR..SE E E E NE E E E E E  
20 FT WIND SPD..1 1 1 2 3 3 3 3 3 3  
20 FT WIND GUST.5 6 6 7 7 8 9 9 11 11  
   
THURSDAY NIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING  
PARTLY CLOUDY (35-45 PERCENT). CHANCE OF  
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING.  
MIN TEMPERATURE.....AROUND 54.  
MAX HUMIDITY........96 PERCENT.  
WIND (20 FT)........LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS EARLY IN THE EVENING.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........58 64 70 59 47 45 42 40 37 33 30 28  
WEATHER COV.....CHC  
WEATHER TYPE....RW  
TSTM COV........CHC  
TEMP............76 74 69 66 64 62 60 59 57 56 55 54  
RH..............60 62 73 81 84 87 87 87 90 90 93 96  
20 FT WIND DIR..E E E NE NE NE NE N N N N N  
20 FT WIND SPD..3 3 2 2 2 2 1 1 1 2 2 2  
20 FT WIND GUST.12 12 11 9 9 9 8 8 8 8 8 8  
   
FRIDAY  
 
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........50 PERCENT.  
WIND (20 FT)........LIGHT WINDS.  
MIXING HEIGHT.......5500 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 8 TO 10 MPH SHIFTING TO THE EAST  
AROUND 9 MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (2500 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO GOOD (45700 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........26 24 28 31 35 36 36 37 41 45 49 46  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............54 56 59 64 69 72 74 75 76 77 76 75  
RH..............96 93 87 75 66 59 55 54 52 50 52 54  
20 FT WIND DIR..N N N NE NE NE NE E E E E E  
20 FT WIND SPD..2 2 2 3 3 3 4 4 4 4 4 4  
20 FT WIND GUST.8 8 9 9 11 11 11 11 11 12 12 13  
MIX HGT (KFT)...0.3 0.5 0.8 1.3 1.9 2.8 3.7 4.4 5.1 5.5 5.3 4.3  
TRANSP WIND DIR.NE NE NE NE NE NE E E E E E E  
TRANSP WIND SPD.8 8 9 9 10 10 10 10 10 9 9 9  
SDSPL KT-FT/10003 3 6 11 17 25 34 40 45 46 43 34  
 
 
FORECASTER...KAISER  
REQUESTED BY...KATE LENZ  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2619524.0/GRB  
.DELDT 08/12/26  
.FORMATTERVERSION 2.0.0  
.EMAIL KATHERINE.LENZ@WISCONSIN.GOV  
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