830  
FNUS73 KDMX 081256  
FWSDMX  
 
SPOT FORECAST FOR USR - SLEEPER UNIT...USFWS  
NATIONAL WEATHER SERVICE DES MOINES IA  
756 AM CDT THU MAY 8 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON MAY 08.  
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  
 
DRY CONDITIONS EXPECTED AGAIN TODAY WITH MINIMUM RELATIVE HUMIDITY  
VALUES FALLING TO NEAR 25% BY THIS AFTERNOON. WINDS WILL BE OUT  
OF THE EAST TO NORTHEAST WITH SPEEDS BETWEEN 10 TO 15 MPH.  
   
REST OF TODAY  
 
SKY/WEATHER.........SUNNY (0-10 PERCENT).  
MAX TEMPERATURE.....AROUND 72.  
MIN HUMIDITY........28 PERCENT.  
WIND (20 FT)........EAST WINDS 8 TO 10 MPH.  
MIXING HEIGHT.......5400 FT AGL.  
TRANSPORT WINDS.....EAST 10 TO 15 MPH.  
SMOKE DISPERSAL.....FAIR (17400 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO GOOD (59200 KNOT-FT) IN THE  
AFTERNOON.  
GFDI................1.  
 
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........1 1 0 0 1 2 2 5 2  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............55 57 61 64 66 68 70 71 72  
RH..............55 51 44 40 37 33 31 30 28  
20 FT WIND DIR..E E E E E E NE E E  
20 FT WIND SPD..9 8 8 9 10 10 10 10 9  
20 FT WIND GUST.10 10 12 13 15 15 15  
MIX HGT (KFT)...1.3 1.9 2.2 3.5 4.2 4.9 5.0 5.2 5.4  
TRANSP WIND DIR.E E E E E E E E E  
TRANSP WIND SPD.15 15 13 15 15 14 13 10 10  
GFDI............0 0 0 0 1 1 1 1 1  
SMOKE DISPERSAL.17 25 24 46 54 59 55 47 49  
SMOKE CAT.......PR PR PR FR FR FR FR FR FR  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).  
MIN TEMPERATURE.....AROUND 45.  
MAX HUMIDITY........81 PERCENT.  
WIND (20 FT)........EAST WINDS 6 TO 9 MPH SHIFTING TO THE SOUTHEAST  
5 TO 6 MPH OVERNIGHT.  
MIXING HEIGHT.......400 FT AGL.  
TRANSPORT WINDS.....EAST 8 TO 12 MPH SHIFTING TO THE SOUTH 10 TO 12  
MPH OVERNIGHT.  
SMOKE DISPERSAL.....GOOD (44300 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (3300 KNOT-FT) LATE IN THE  
NIGHT.  
GFDI................1.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........0 3 6 8 7 7 4 10 17 11 7 10  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............71 70 66 60 56 54 52 50 49 47 47 46  
RH..............28 28 34 44 55 59 63 68 74 78 81 80  
20 FT WIND DIR..E E E E E E SE SE SE SE SE SE  
20 FT WIND SPD..9 8 7 6 6 6 6 6 5 5 5 5  
20 FT WIND GUST.14 14 12 12 12 12 10 12 10 10 10 10  
MIX HGT (KFT)...5.5 5.1 0.6 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4  
TRANSP WIND DIR.E E E E E E SE SE SE S S S  
TRANSP WIND SPD.9 8 9 10 12 12 12 12 12 10 10 10  
GFDI............1 1 0 0 0 0 0 0 0 0 0 0  
SMOKE DISPERSAL.44 36 5 5 4 4 4 4 4 4 4 3  
SMOKE CAT.......FR PR PR PR PR PR PR PR PR PR PR PR  
   
FRIDAY  
 
SKY/WEATHER.........SUNNY (0-10 PERCENT).  
MAX TEMPERATURE.....AROUND 81.  
MIN HUMIDITY........31 PERCENT.  
WIND (20 FT)........SOUTH WINDS 5 TO 6 MPH SHIFTING TO THE  
SOUTHWEST AROUND 5 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......5000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 6 TO 12 MPH SHIFTING TO THE WEST 6 TO  
9 MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (3500 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO GOOD (34900 KNOT-FT) IN THE  
AFTERNOON.  
GFDI................0.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........4 2 1 1 2 5 4 3 3 3 3 7  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............45 47 51 55 62 66 71 75 77 79 81 80  
RH..............75 77 72 63 51 46 40 36 35 33 31 31  
20 FT WIND DIR..S S S S S S SW SW SW SW SW SW  
20 FT WIND SPD..5 6 6 6 6 6 5 5 5 5 5 5  
20 FT WIND GUST.10 10 10 12 12 12 10 9 9 9 9 9  
MIX HGT (KFT)...0.4 0.4 0.8 1.3 1.9 2.3 3.0 3.8 4.2 4.6 5.0 4.5  
TRANSP WIND DIR.S S S S S SW SW SW W W W W  
TRANSP WIND SPD.10 10 12 10 9 7 6 6 6 7 8 9  
GFDI............0 0 0 0 0 0 0 0 0 0 0 0  
SMOKE DISPERSAL.4 4 8 12 15 14 15 19 22 28 35 33  
SMOKE CAT.......PR PR PR PR PR PR PR PR PR PR PR PR  
 
 
FORECASTER...05  
REQUESTED BY...RYAN HARR  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2513486.0/DMX  
.DELDT 05/08/25  
.FORMATTERVERSION 2.0.0  
.EMAIL RYAN_HARR@FWS.GOV  
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