Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 301258
FWSDMX

SPOT FORECAST FOR WEST SWAN...USFWS
NATIONAL WEATHER SERVICE DES MOINES IA
758 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.....NORTH WINDS 6 TO 7 MPH SHIFTING TO THE EAST 5
                    TO 7 MPH IN THE LATE MORNING AND AFTERNOON.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......400 FT AGL INCREASING TO 8500 FT AGL.
MIXING WINDS........WEST 1 TO 2 MPH SHIFTING TO THE EAST 1 TO 7 MPH
                    IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (300-43100 KNOT-FT).
WIND (20 FT)........NORTH WINDS 6 TO 7 MPH SHIFTING TO THE EAST 5
                    TO 7 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..............30  28  26  25  25
20 FT WIND DIR..E   E   E   E   E
20 FT WIND SPD..5   6   6   7   7
20 FT WIND GUST.
EYE LVL WND DIR.E   E   E   E   E
EYE LVL WND SPD.4   4   4   5   5
EYE LVL WND GST.
MIX HGT (KFT)...6.9 7.5 8.0 8.5 8.1
MIXNG WIND DIR..NE  NE  NE  NE  E
MIXNG WIND SPD..7   7   6   5   5
HAINES INDEX....5   5   5   5   5

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
MIN TEMPERATURE.....AROUND 44.
MAX HUMIDITY........86 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      11     9      14     23     42
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............69     63     56     52     49     46
RH..............26     35     47     56     66     76
20 FT WIND......E 8    SE 9   SE 8   SE 9   S 10   S 9
20 FT WIND GUST.10     15     10     15     15     15

.FRIDAY...

MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........42 PERCENT.
EYE LEVEL WINDS.....SOUTHWEST WINDS 9 TO 14 MPH.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1500 FT AGL INCREASING TO 5300 FT AGL.
MIXING WINDS........SOUTHWEST 8 TO 16 MPH INCREASING TO 20 TO 29
                    MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR TO FAIR (1800-28900 KNOT-FT) INCREASING TO
                    EXCELLENT TO EXCELLENT (112400-127800 KNOT-FT).
WIND (20 FT)........SOUTHWEST WINDS 9 TO 14 MPH.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
TEMP............44        49        57        66
RH..............86        77        67        50
20 FT WIND......S 9G15    SW 12G15  SW 14G20  SW 14G20
EYE LEVEL WIND..S 6G15    SW 9G15   SW 10G20  SW 10G20
MIX HGT (FT)....300       300       2600      4800
MIXNG WIND......S 8       SW 16     SW 25     SW 29
HAINES INDEX....4         4         3         3

$$
FORECASTER...AWB
REQUESTED BY...BLAKE KNISLEY
TYPE OF REQUEST...PRESCRIBED
.TAG 20150430.WESTS.02/DMX



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