Suppression Forecast
Issued by NWS Des Moines, IA

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FNUS73 KDMX 181444
FWSDMX

SPOT FORECAST FOR TERRA PARK...CITY OF JOHNSTON
NATIONAL WEATHER SERVICE DES MOINES IA
844 AM CST THU DEC 18 2014

FORECAST IS BASED ON IGNITION TIME OF 1000 CST ON DECEMBER 18.
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 LIGHT TODAY FROM THE EAST OR SOUTHEAST WITH SURFACE
HIGH PRESSURE SITUATED JUST EAST OF CENTRAL IOWA. A BAND OF LIGHT
SNOW CURRENTLY OVER SOUTHERN IOWA WILL ONLY ADVANCE SLIGHTLY
FURTHER NORTH BEFORE WEAKENING LATER THIS MORNING. FOR THE DES
MOINES AREA...SNOWFALL AMOUNTS SHOULD RANGE FROM A DUSTING IN THE
NORTH TO MAYBE A TENTH OF AN INCH ON THE SOUTHERN SIDE OF THE
CITY.

.TODAY...

SKY/WEATHER.........CLOUDY (90-100 PERCENT). SLIGHT CHANCE OF SNOW
                    UNTIL LATE AFTERNOON.
TEMPERATURE.........23 AT IGNITION...MAX 30.
RH..................81 PERCENT AT IGNITION...MIN 66 PERCENT.
EYE LEVEL WINDS.....EAST WINDS AROUND 5 MPH EARLY IN THE MORNING
                    BECOMING LIGHT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2200 FT AGL INCREASING TO 2400 FT AGL LATE IN
                    THE AFTERNOON.
MIXING WINDS........SOUTH 0 TO 5 MPH.
SMOKE DISPERSAL.....POOR (0-4900 KNOT-FT).
WIND (20 FT)........WINDS SOUTHEAST AT 2 MPH AT
                    IGNITION...OTHERWISE EAST WINDS AROUND 5 MPH
                    EARLY IN THE MORNING BECOMING LIGHT.

TIME (CST)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........100 99  99  98  97  96  95  94
WEATHER COV.....SCH SCH SCH SCH
WEATHER TYPE....SN  SN  SN  SN
TSTM COV........
TEMP............23  24  26  28  30  30  29  26
RH..............81  77  74  71  66  69  72  85
20 FT WIND DIR..SE  SE  SE  SE  E   E   E   E
20 FT WIND SPD..2   3   3   3   2   2   2   1
20 FT WIND GUST.    5   5   5
EYE LVL WND DIR.SE  SE  SE  SE  E   E   E   E
EYE LVL WND SPD.1   2   2   2   1   1   1   1
EYE LVL WND GST.    5   5   5
MIX HGT (KFT)...1.0 1.3 1.7 1.9 2.2 2.4 1.7 1.0
MIXNG WIND DIR..S   SW  W   W   W   SW  SW  S
MIXNG WIND SPD..0   0   0   1   1   2   2   2
HAINES INDEX....3   3   2   2   2   2   2   2

.TONIGHT...

SKY/WEATHER.........CLOUDY (90-100 PERCENT).
TEMPERATURE.........MIN 22.
RH..................MAX 100 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......400 FT AGL.
MIXING WINDS........SOUTHWEST 2 TO 7 MPH.
SMOKE DISPERSAL.....POOR (500-2200 KNOT-FT).
WIND (20 FT)........LIGHT WINDS.

TIME (CST)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........93     92     92     91     93     95
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............24     24     24     24     23     23
RH..............92     92     88     88     92     96
20 FT WIND......E 1    SE 1   SE 1   S 1    S 1    S 1
20 FT WIND GUST.
EYE LEVEL WIND..E 1    SE 1   SE 1   S 1    S 1    S 1
EYE LVL WND GST.
MIX HGT (FT)....300    300    300    400    300    300
MIXNG WIND......SE 2   S 3    S 6    SW 7   SW 6   SW 6
HAINES INDEX....2      2      2      2      2      2

.FRIDAY...

SKY/WEATHER.........CLOUDY (90-100 PERCENT).
TEMPERATURE.........MAX 34.
RH..................MIN 69 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTHEAST 5 TO 6 MPH IN
                    THE LATE MORNING AND AFTERNOON.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1800 FT AGL INCREASING TO 3300 FT AGL IN THE
                    AFTERNOON.
MIXING WINDS........SOUTH 6 TO 13 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (1200-35800 KNOT-FT).
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 6 MPH IN
                    THE LATE MORNING AND AFTERNOON.

TIME (CST)      6 AM      9 AM      NOON      3 PM
SKY (%).........97        94        91        91
WEATHER COV.....
WEATHER TYPE....NONE      NONE      NONE      NONE
TSTM COV........
TEMP............22        25        32        34
RH..............100       92        75        69
20 FT WIND......SE 1      S 3G5     S 6       S 6
EYE LEVEL WIND..SE 1      S 2G5     S 4G5     S 4G5
MIX HGT (FT)....300       300       2500      3300
MIXNG WIND......SW 6      S 6       S 7       S 13
HAINES INDEX....2         2         2         2

$$
FORECASTER...SKOW
REQUESTED BY...KARI ALLEN
TYPE OF REQUEST...PRESCRIBED
.TAG 20141218.TERRA.01/DMX


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