867
FNUS73 KDMX 081347
FWSDMX
SPOT FORECAST FOR RATHBUN HQ...IOWA DNR-RATHBUN WILDLIFE UNIT
NATIONAL WEATHER SERVICE DES MOINES IA
847 AM CDT MON SEP 8 2025
FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON SEPTEMBER 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
WARMER TODAY WITH HIGH TEMPERATURES IN THE UPPER 70S. WINDS WILL
ALSO BECOME INCREASINGLY BREEZY WITH WINDS OUT OF THE SOUTH
BECOMING SUSTAINED BETWEEN 10 TO 15 MPH WITH GUSTS TO ABOUT 25 MPH
BY THIS AFTERNOON. THESE BREEZY WINDS WILL BE PAIRED WITH DRY
CONDITIONS THROUGH MUCH OF THE DAY WITH MINIMUM RELATIVE HUMIDITY
VALUES NEAR TO JUST BELOW 40% THIS AFTERNOON. SCATTERED SHOWERS
THEN MOVE IN OVERNIGHT.
REST OF TODAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........40 PERCENT.
WIND (20 FT)........SOUTH WINDS 12 TO 15 MPH.
MIXING HEIGHT.......4500 FT AGL.
TRANSPORT WINDS.....SOUTH 18 TO 22 MPH.
SMOKE DISPERSAL.....FAIR (16000 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (86300 KNOT-FT) IN THE
AFTERNOON.
GFDI................0.
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........2 4 7 7 10 20 19 26 31
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............59 65 68 71 74 75 77 78 77
RH..............67 56 51 46 41 41 40 40 42
20 FT WIND DIR..S S S S S S S S S
20 FT WIND SPD..12 13 14 15 15 15 14 14 14
20 FT WIND GUST.20 22 22 23 23 23 22 22 22
MIX HGT (KFT)...1.0 1.4 2.2 2.5 3.2 3.7 4.2 4.5 3.6
TRANSP WIND DIR.S S S S S S S S S
TRANSP WIND SPD.18 20 22 20 21 21 22 22 20
GFDI............0 0 0 0 0 0 0 0 0
SMOKE DISPERSAL.16 25 41 43 58 67 79 86 62
SMOKE CAT.......PR PR FR FR FR GD GD GD GD
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS AFTER 3 AM. CHANCE OF RAIN SHOWERS
EARLY IN THE MORNING.
MIN TEMPERATURE.....AROUND 56.
MAX HUMIDITY........65 PERCENT.
WIND (20 FT)........SOUTH WINDS 8 TO 12 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTH 13 TO 16 MPH.
SMOKE DISPERSAL.....FAIR (22900 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (5200 KNOT-FT) LATE IN THE
NIGHT.
GFDI................0.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........44 59 51 53 58 58 45 52 62 70 80 75
WEATHER COV..... SCH CHC
WEATHER TYPE.... RW RW
TSTM COV........
TEMP............75 72 67 64 63 62 62 61 60 60 59 59
RH..............45 49 61 65 65 65 62 60 62 60 62 64
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..12 9 8 8 8 10 10 10 10 9 10 9
20 FT WIND GUST.20 18 16 18 17 20 20 20 20 18 20 20
MIX HGT (KFT)...1.8 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.S S S S S S S S S S S S
TRANSP WIND SPD.15 13 13 15 16 16 16 15 15 15 15 15
GFDI............0 0 0 0 0 0 0 0 0 0 0 0
SMOKE DISPERSAL.23 6 5 7 7 7 7 7 7 7 7 7
SMOKE CAT.......PR PR PR PR PR PR PR PR PR PR PR PR
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT). CHANCE OF RAIN
SHOWERS IN THE MORNING.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........57 PERCENT.
WIND (20 FT)........SOUTH WINDS 9 TO 13 MPH.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....SOUTH 13 TO 17 MPH.
SMOKE DISPERSAL.....POOR (5500 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (43100 KNOT-FT) IN THE
AFTERNOON.
GFDI................0.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........76 64 65 54 49 43 37 45 39 34 28 31
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RW RW RW RW RW RW RW
TSTM COV........
TEMP............58 57 60 63 66 69 71 73 74 75 75 74
RH..............67 72 72 72 68 61 59 57 57 58 58 59
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..9 10 10 10 12 13 13 13 13 12 10 9
20 FT WIND GUST.18 18 18 18 20 20 20 20 20 20 18 16
MIX HGT (KFT)...0.5 0.5 0.6 1.0 1.4 1.5 2.1 2.8 2.8 2.9 3.0 2.2
TRANSP WIND DIR.S S S S S S S S S S S S
TRANSP WIND SPD.14 13 13 15 17 17 17 17 17 17 16 15
GFDI............0 0 0 0 0 0 0 0 0 0 0 0
SMOKE DISPERSAL.6 6 7 13 21 23 32 41 43 43 42 28
SMOKE CAT.......PR PR PR PR PR PR PR FR FR FR FR PR
FORECASTER...05
REQUESTED BY...BRYAN MASTERS
TYPE OF REQUEST...PRESCRIBED
.TAG 2521551.0/DMX
.DELDT 09/08/25
.FORMATTERVERSION 2.0.0
.EMAIL BRYAN.MASTERS@DNR.IOWA.GOV
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