Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 120951
FWSDMX

SPOT FORECAST FOR HARBOR DRIVE AND BEAVER IN JOHNSTON...POLK COUNTY EM
NATIONAL WEATHER SERVICE DES MOINES IA
451 AM CDT SAT APR 12 2014

FORECAST IS BASED ON REQUEST TIME OF 0447 CDT ON APRIL 12.
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 REMAIN FROM THE SOUTH AND GRADUALLY BECOME SOUTHWEST BY
AFTERNOON.  MIXING WILL BE LIMITED THROUGH SUNRISE AND THEN INCREASE
INTO THE MORNING.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS EARLY IN THE MORNING.
                    ISOLATED SHOWERS AND THUNDERSTORMS LATE IN THE
                    AFTERNOON...THEN SCATTERED SHOWERS AND
                    THUNDERSTORMS LATE IN THE AFTERNOON.
TEMPERATURE.........53 AT REQUEST...MAX 75.
RH..................57 PERCENT AT REQUEST...MIN 42 PERCENT.
EYE LEVEL WINDS.....SOUTHWEST WINDS 10 TO 17 MPH.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2000 FT AGL INCREASING TO 4200 FT AGL LATE IN
                    THE MORNING.
MIXING WINDS........SOUTH 10 TO 17 MPH INCREASING TO 20 TO 25 MPH
                    IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR (4500 KNOT-FT) INCREASING TO EXCELLENT
                    (83000 KNOT-FT) IN THE AFTERNOON.
WIND (20 FT)........WINDS SOUTH AT 12 MPH AT REQUEST...OTHERWISE
                    SOUTHWEST WINDS 10 TO 17 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
                    MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS LATE IN THE AFTERNOON.
MIXING WINDS........SOUTH 10 TO 17 MPH INCREASING TO 20 TO 25 MPH
                    IN THE LATE MORNING AND AFTERNOON.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........68  69  70  70  70  71  72  73  76  82  86  87
WEATHER COV.....ISO                                     ISO SCT
WEATHER TYPE....RW                                      RW  RW
TSTM COV........ISO                                     ISO SCT
TEMP............53  55  58  60  64  67  71  74  75  75  74  73
RH..............57  59  57  60  58  56  53  53  52  52  53  55
20 FT WIND DIR..S   S   S   S   S   S   SW  SW  SW  SW  SW  SW
20 FT WIND SPD..12  13  14  15  16  17  17  17  16  14  12  10
20 FT WIND GUST.15  15  20  25  25  25  25  25  20  20  15  15
EYE LVL WND DIR.S   S   S   S   S   S   SW  SW  SW  SW  SW  SW
EYE LVL WND SPD.9   9   10  11  11  12  12  12  11  10  9   7
EYE LVL WND GST.15  15  20  25  25  25  25  25  20  20  15  15
MIX HGT (KFT)...0.3 0.3 0.8 1.4 2.0 2.5 3.1 3.6 3.8 4.0 4.2 2.9
MIXNG WIND DIR..S   S   S   S   S   S   SW  SW  SW  SW  S   S
MIXNG WIND SPD..10  12  14  17  21  23  24  25  25  24  22  20
HAINES INDEX....3   3   3   4   4   4   4   4   4   3   3   3

$$
FORECASTER...COGIL
REQUESTED BY...AJ MUMM
TYPE OF REQUEST...WILDFIRE
.TAG 20140412.HARBO.01/DMX



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