820  
FNUS73 KDMX 101333  
FWSDMX  
 
SPOT FORECAST FOR MEREHOFF POINT...IOWA DNR  
NATIONAL WEATHER SERVICE DES MOINES IA  
833 AM CDT TUE JUN 10 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON JUNE 10.  
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  
 
WINDS WILL BE LIGHT OUT OF THE WEST TO SOUTHWEST WITH MOSTLY  
CLEAR, BUT OCCASIONALLY SMOKY, SKIES TODAY. TEMPERATURES WILL WARM  
INTO THE LOW 80S THIS AFTERNOON, WITH RELATIVE HUMIDITY VALUES  
FALLING TO AROUND 30 PERCENT.  
   
REST OF TODAY  
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
MAX TEMPERATURE.....AROUND 86.  
MIN HUMIDITY........33 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 10 TO 12 MPH.  
MIXING HEIGHT.......4300 FT AGL.  
TRANSPORT WINDS.....WEST 14 TO 16 MPH.  
SMOKE DISPERSAL.....GOOD (43000 KNOT-FT).  
 
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........6 8 12 12 15 16 16  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............73 76 79 81 82 83 83  
RH..............53 45 39 35 34 33 34  
20 FT WIND DIR..W W W SW SW SW SW  
20 FT WIND SPD..10 10 10 12 12 12 12  
20 FT WIND GUST.16 15 15 15 16 17 17  
MIX HGT (KFT)...3.1 3.8 4.1 4.3 4.3 4.3 4.0  
TRANSP WIND DIR.W W W W W W SW  
TRANSP WIND SPD.16 15 14 14 15 15 16  
SMOKE DISPERSAL.43 50 49 52 56 56 56  
SMOKE CAT.......FR FR FR FR FR FR FR  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).  
MIN TEMPERATURE.....AROUND 62.  
MAX HUMIDITY........75 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 8 TO 12 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 15 TO 23 MPH.  
SMOKE DISPERSAL.....GOOD (41500 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (6500 KNOT-FT) LATE IN THE  
NIGHT.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........16 16 14 10 8 11  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
TEMP............84 79 71 68 66 64  
RH..............33 44 55 59 63 70  
20 FT WIND......SW 12 SW 10 SW 9 SW 12 SW 10 SW 10  
20 FT WIND GUST.17 16 14 17 17 16  
MIX HGT (FT)....3000 500 600 700 600 600  
TRANSPORT WIND..SW 16 SW 15 S 17 SW 21 SW 22 SW 21  
SMOKE DISPERSAL.42 7 8 13 12 11  
SMOKE CAT.......FAIR POOR POOR POOR POOR POOR  
   
WEDNESDAY  
 
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS LATE IN THE  
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS  
LATE IN THE AFTERNOON.  
MAX TEMPERATURE.....AROUND 90.  
MIN HUMIDITY........41 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 6 TO 7 MPH SHIFTING TO THE  
SOUTH 6 TO 10 MPH EARLY IN THE MORNING. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS  
LATE IN THE AFTERNOON.  
MIXING HEIGHT.......5900 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 7 TO 14 MPH SHIFTING TO THE SOUTHEAST  
8 TO 9 MPH LATE IN THE MORNING, THEN SHIFTING  
TO THE SOUTH 12 TO 17 MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (2700 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO EXCELLENT (76800 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 6 AM 9 AM NOON 3 PM  
SKY (%).........13 14 24 42  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
TEMP............62 73 86 90  
RH..............78 62 45 41  
20 FT WIND......SW 7G10 S 7G8 S 8G9 S 10G13  
MIX HGT (FT)....400 1300 2800 5100  
TRANSPORT WIND..SW 14 E 8 S 9 S 14  
SMOKE DISPERSAL.5 9 23 61  
SMOKE CAT.......POOR POOR POOR GOOD  
 
 
FORECASTER...DODSON  
REQUESTED BY...JEFF FEISEL  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2515649.0/DMX  
.DELDT 06/10/25  
.FORMATTERVERSION 2.0.0  
.EMAIL JEFFREY.FEISEL@DNR.IOWA.GOV  
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