Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 301257
FWSDMX

SPOT FORECAST FOR 12 MILE...USFWS
NATIONAL WEATHER SERVICE DES MOINES IA
757 AM CDT THU APR 30 2015

FORECAST IS BASED ON IGNITION TIME OF 1200 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...

WINDS WILL BE PRIMARILY LIGHT TODAY WITH HIGH PRESSURE...GENERALLY
FROM THE NORTH TO EAST THOUGH WILL SHIFT TO THE SOUTH TONIGHT. SOME
DRIER DEWPOINTS MAY MIX DOWN THIS AFTERNOON...WITH RELATIVE HUMIDITIES
DROPPING INTO THE 20 TO 30 PERCENT RANGE. BOUNDARY WILL BRING
CHANCES FOR BY RAIN FRIDAY MORNING.

.TODAY...

SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........25 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS 6 TO 7 MPH SHIFTING TO THE EAST
                    5 TO 8 MPH IN THE LATE MORNING AND AFTERNOON.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......600 FT AGL INCREASING TO 8600 FT AGL.
MIXING WINDS........WEST 2 TO 3 MPH SHIFTING TO THE EAST 1 TO 6 MPH
                    IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (500-34600 KNOT-FT).
WIND (20 FT)........NORTHWEST WINDS 6 TO 7 MPH SHIFTING TO THE EAST
                    5 TO 8 MPH IN THE LATE MORNING AND AFTERNOON.

TIME (CDT)      1PM 2PM 3PM 4PM 5PM
SKY (%).........16  14  9   7   7
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............65  67  69  70  70
RH..............29  27  25  25  25
20 FT WIND DIR..E   E   E   E   E
20 FT WIND SPD..5   6   6   7   8
20 FT WIND GUST.                10
EYE LVL WND DIR.E   E   E   E   E
EYE LVL WND SPD.4   4   4   5   6
EYE LVL WND GST.                10
MIX HGT (KFT)...6.9 7.4 8.0 8.6 8.3
MIXNG WIND DIR..NE  NE  E   E   E
MIXNG WIND SPD..6   6   5   3   3
HAINES INDEX....5   5   5   5   5

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (45-55 PERCENT).
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........82 PERCENT.
WIND (20 FT)........SOUTH WINDS 8 TO 10 MPH.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........7      10     9      18     26     44
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............69     64     56     52     50     47
RH..............26     35     49     59     63     74
20 FT WIND......SE 8   SE 9   SE 8   SE 9   S 10   S 10
20 FT WIND GUST.10     15     10     15     15     15

.FRIDAY...

SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). RAIN SHOWERS
                    LIKELY IN THE MORNING.
MAX TEMPERATURE.....AROUND 72.
MIN HUMIDITY........39 PERCENT.
EYE LEVEL WINDS.....SOUTHWEST WINDS 9 TO 15 MPH.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1700 FT AGL INCREASING TO 5400 FT AGL.
MIXING WINDS........SOUTH 8 TO 13 MPH INCREASING TO SOUTHWEST 24 TO
                    29 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (1800-37500 KNOT-FT) INCREASING TO
                    EXCELLENT TO EXCELLENT (62200-116700 KNOT-FT)
                    IN THE AFTERNOON.
WIND (20 FT)........SOUTHWEST WINDS 9 TO 15 MPH.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
SKY (%).........68        79        78        54
WEATHER COV.....          LIKELY    LIKELY    S CHC
WEATHER TYPE....NONE      RNSHWR    RNSHWR    RNSHWR
TSTM COV........
TEMP............45        50        58        66
RH..............82        74        64        48
20 FT WIND......S 9G15    SW 12G15  SW 15G20  SW 14G20
EYE LEVEL WIND..S 6G15    SW 9G15   SW 11G20  SW 10G20
MIX HGT (FT)....300       600       2600      4500
MIXNG WIND......S 8       SW 18     SW 28     SW 28
HAINES INDEX....4         4         3         2

$$
FORECASTER...AWB
REQUESTED BY...BLAKE KNISLEY
TYPE OF REQUEST...PRESCRIBED
.TAG 20150430.12MIL.01/DMX


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