196  
FNUS73 KDMX 301231  
FWSDMX  
 
SPOT FORECAST FOR BCC 15/20...IOWA DNR  
NATIONAL WEATHER SERVICE DES MOINES IA  
731 AM CDT WED APR 30 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON APRIL 30.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
AN INITIAL OBSERVATION AT IGNITION AND A MID BURN OBSERVATION ARE REQUIRED.  
 
PLEASE RELAY THEM TO THE NATIONAL WEATHER SERVICE FOR EACH PRESCRIBED BURN.  
   
DISCUSSION
 
 
MOSTLY CLOUDY TODAY WITH SPOTTY LIGHT RAIN IN THE MORNING,  
BECOMING MORE WIDESPREAD BY LATE TODAY. RELATIVE HUMIDITY  
GENERALLY BETWEEN 50% AND 70% THROUGH THE DAY, WITH AN AFTERNOON  
HIGH TEMPERATURE IN THE LOWER 60S. WIND WILL BE OUT OF THE  
SOUTHEAST A 10-15 MPH.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF  
THUNDERSTORMS EARLY IN THE AFTERNOON. CHANCE OF  
RAIN SHOWERS IN THE AFTERNOON.  
TEMPERATURE.........52 AT IGNITION...MAX 64.  
RH..................66 PERCENT AT IGNITION...MIN 53 PERCENT.  
WIND (20 FT)........WINDS SOUTHEAST AT 10 MPH AT  
IGNITION...OTHERWISE SOUTHEAST WINDS 10 TO 13  
MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR  
THUNDERSTORMS EARLY IN THE AFTERNOON.  
MIXING HEIGHT.......1000 FT AGL AT IGNITION...OTHERWISE 3300 FT  
AGL.  
TRANSPORT WINDS.....SOUTHEAST 16 TO 20 MPH.  
SMOKE DISPERSAL.....FAIR /14600 KNOT-FT/ AT IGNITION. MAX...GOOD  
/55300 KNOT-FT/.  
GFDI................2.  
 
TIME (CDT) 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A 12P  
SKY (%).........66 64 67 68 74 78 84 86 86  
WEATHER COV..... CHC CHC CHC CHC CHC CHC  
WEATHER TYPE.... RW RW RW RW RW RW  
TSTM COV........ SCH  
TEMP............52 56 60 61 61 62 62 61 60  
RH..............66 59 53 53 56 56 60 62 69  
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE  
20 FT WIND SPD..10 12 13 12 13 13 13 12 10  
20 FT WIND GUST.13 14 16 15 16 17 17 17 17  
MIX HGT (KFT)...1.0 1.5 2.2 2.8 3.3 2.9 2.6 2.5 1.9  
TRANSP WIND DIR.SE SE S S SE SE SE SE SE  
TRANSP WIND SPD.17 20 18 20 20 18 17 18 16  
GFDI............1 1 2 2 2 2 1 1 1  
SMOKE DISPERSAL.15 25 35 48 55 47 39 40 27  
SMOKE CAT.......PR PR PR FR FR FR PR FR PR  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT). RAIN SHOWERS LIKELY  
EARLY IN THE EVENING, THEN CHANCE OF RAIN  
SHOWERS IN THE LATE EVENING AND OVERNIGHT.  
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT.  
TEMPERATURE.........MIN 51.  
RH..................MAX 96 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 5 TO 10 MPH IN THE EVENING AND  
OVERNIGHT BECOMING LIGHT, THEN BECOMING EAST  
AROUND 5 MPH AFTER 3 AM BECOMING LIGHT BECOMING  
NORTH AROUND 5 MPH EARLY IN THE MORNING. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS  
OVERNIGHT.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 16 MPH SHIFTING TO THE SOUTH 6  
TO 9 MPH AFTER 3 AM.  
SMOKE DISPERSAL.....POOR (2500 KNOT-FT).  
GFDI................1.  
 
TIME (CDT) 1 PM 3 PM 5 PM 7 PM 9 PM 11 PM  
SKY (%).........92 94 92 91 92 91  
WEATHER COV.....LIKELY LIKELY CHANCE CHANCE CHANCE CHANCE  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........ S CHC  
TEMP............60 57 55 54 54 53  
RH..............69 80 83 93 93 96  
20 FT WIND......SE 10 E 8 E 7 SE 6 E 3 NE 3  
20 FT WIND GUST.16 14 12 9 7 7  
MIX HGT (FT)....1000 700 900 900 800 700  
TRANSPORT WIND..E 14 E 15 E 16 SE 12 S 10 SW 7  
GFDI............1 1 0 0 0 0  
SMOKE DISPERSAL.13 10 12 9 7 4  
SMOKE CAT.......POOR POOR POOR POOR POOR POOR  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). CHANCE OF RAIN  
SHOWERS EARLY IN THE MORNING, THEN SLIGHT  
CHANCE OF RAIN SHOWERS IN THE MORNING. CHANCE  
OF RAIN SHOWERS IN THE AFTERNOON.  
TEMPERATURE.........MAX 66.  
RH..................MIN 67 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 5 TO 14 MPH.  
MIXING HEIGHT.......3500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 6 TO 15 MPH INCREASING TO 18 TO 22  
MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (3100 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO GOOD (56000 KNOT-FT) IN THE  
AFTERNOON.  
GFDI................1.  
 
TIME (CDT) 1 AM 4 AM 7 AM 10 AM  
SKY (%).........91 73 71 67  
WEATHER COV.....CHANCE S CHC S CHC CHANCE  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........  
TEMP............52 56 62 63  
RH..............100 90 72 70  
20 FT WIND......N 5G8 N 6G10 NW 9G13 NW 13G17  
MIX HGT (FT)....600 1300 3000 3200  
TRANSPORT WIND..W 6 NW 7 NW 10 NW 18  
GFDI............0 0 1 1  
SMOKE DISPERSAL.3 8 27 50  
SMOKE CAT.......POOR POOR POOR FAIR  
 

 
FORECASTER...LEE  
REQUESTED BY...PRAIRIE RESOURCE UNIT  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2512343.0/DMX  
.DELDT 04/30/25  
.FORMATTERVERSION 2.0.0  
.EMAIL LAURA.MINER@DNR.IOWA.GOV  
 
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