Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 301230
FWSDMX

SPOT FORECAST FOR WEST SALT CREEK...IDNR
NATIONAL WEATHER SERVICE DES MOINES IA
730 AM CDT THU APR 30 2015

FORECAST IS BASED ON IGNITION TIME OF 1000 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...

HIGH PRESSURE WILL DROP SOUTH TODAY WITH THE RIDGE AXIS
MOVING THROUGH. WINDS WILL BE OUT OF THE NORTH TO EAST
AND LIGHTER. SOME DRIER DEWPOINTS MAY MIX DOWN THIS
AFTERNOON...WITH RELATIVE HUMIDITIES DROPPING INTO THE
20 TO 30 PERCENT RANGE.

.TODAY...

SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 67.
MIN HUMIDITY........25 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS AROUND 5 MPH EARLY IN THE
                    MORNING BECOMING LIGHT...THEN BECOMING
                    NORTHEAST 5 TO 12 MPH EARLY IN THE MORNING.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1700 FT AGL INCREASING TO 7400 FT AGL.
MIXING WINDS........NORTHEAST 6 TO 13 MPH SHIFTING TO THE NORTH 13
                    TO 20 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (1200-42500 KNOT-FT) INCREASING TO
                    EXCELLENT TO EXCELLENT (75200-113300 KNOT-FT)
                    IN THE AFTERNOON.
WIND (20 FT)........NORTHWEST WINDS AROUND 5 MPH EARLY IN THE
                    MORNING BECOMING LIGHT...THEN BECOMING
                    NORTHEAST 5 TO 12 MPH EARLY IN THE MORNING.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........9   7   6   10  17  21  20
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............57  60  62  64  66  67  66
RH..............40  36  33  30  27  25  26
20 FT WIND DIR..NE  N   N   N   N   N   NE
20 FT WIND SPD..9   9   10  12  12  12  10
20 FT WIND GUST.10  10  15  15  15  15  15
EYE LVL WND DIR.NE  N   N   N   N   N   NE
EYE LVL WND SPD.6   6   7   9   9   9   7
EYE LVL WND GST.10  10  15  15  15  15  15
MIX HGT (KFT)...3.8 5.1 6.4 6.8 7.1 7.4 6.8
MIXNG WIND DIR..NE  N   N   N   N   N   N
MIXNG WIND SPD..13  17  20  20  17  15  13
HAINES INDEX....4   4   4   4   5   5   5

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....AROUND 42.
MAX HUMIDITY........79 PERCENT.
EYE LEVEL WINDS.....SOUTHEAST WINDS 5 TO 9 MPH UNTIL EARLY MORNING
                    BECOMING LIGHT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6200 FT AGL DECREASING TO 300 FT AGL.
MIXING WINDS........SOUTHWEST 3 TO 12 MPH.
SMOKE DISPERSAL.....POOR TO EXCELLENT (800-60000 KNOT-FT)
                    DECREASING TO POOR TO POOR (700-800 KNOT-FT)
                    AFTER MIDNIGHT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 9 MPH UNTIL EARLY MORNING
                    BECOMING LIGHT.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........17     17     11     7      7      10
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............65     60     53     49     46     44
RH..............27     37     50     61     68     73
20 FT WIND......NE 9   NE 7   E 6    SE 5   S 3    S 3
20 FT WIND GUST.10                          5      5
EYE LEVEL WIND..NE 6   NE 5   E 4    SE 4   S 2    S 2
EYE LVL WND GST.10                          5      5
MIX HGT (FT)....6200   3800   300    300    300    300
MIXNG WIND......NE 12  NE 7   E 5    SE 3   S 3    SW 3
HAINES INDEX....5      5      5      5      5      5

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........36 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTHWEST 5 TO 9 MPH.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1300 FT AGL INCREASING TO 7000 FT AGL.
MIXING WINDS........SOUTHWEST 3 TO 8 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (700-49200 KNOT-FT).
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 9 MPH.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
SKY (%).........10        32        53        59
WEATHER COV.....                              S CHC
WEATHER TYPE....NONE      NONE      NONE      RNSHWR
TSTM COV........
TEMP............42        55        64        68
RH..............79        53        41        37
20 FT WIND......S 3G5     SW 7      SW 9G15   SW 8G10
EYE LEVEL WIND..S 2G5     SW 5      SW 6G15   SW 6G10
MIX HGT (FT)....300       2300      4100      6000
MIXNG WIND......SW 3      SW 7      S 7       SW 7
HAINES INDEX....5         5         5         6

$$
FORECASTER...BEERENDS
REQUESTED BY...TOM SMITH
TYPE OF REQUEST...PRESCRIBED
.TAG 20150430.WESTS.01/DMX


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