FNUS73 KDMX 042150
FWSDMX

SPOT FORECAST FOR BIG CREEK WMA...IOWA DNR
NATIONAL WEATHER SERVICE DES MOINES IA
450 PM CDT WED MAY 4 2011

FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON MAY 05.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

PLEASE REMEMBER TO SUBMIT A MID BURN OBSERVATION TO THE NATIONAL WEATHER
SERVICE FOR EACH PRESCRIBED BURN.

.DISCUSSION...
SOUTHERLY WINDS WILL SHIFT TO THE NORTHWEST AS AN UPPER LEVEL DISTURBANCE
PUSHES ACROSS THE REGION. THIS DISTURBANCE WILL ALSO BRING THE CHANCE
FOR SHOWERS AND THUNDERSTORMS THROUGHOUT THE DAY THURSDAY...WITH THE
MOST LIKELY CHANCE FOR PRECIPITATION OCCURRING IN THE AFTERNOON.

.THURSDAY...

SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF RAIN
                    SHOWERS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 65.
MIN HUMIDITY........43 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS 12 TO 21 MPH.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2000 FT AGL INCREASING TO 9000 FT AGL.
MIXING WINDS........NORTHWEST 14 TO 22 MPH.
SMOKE DISPERSAL.....FAIR (42600 KNOT-FT) INCREASING TO EXCELLENT
                    (171600 KNOT-FT).
WIND (20 FT)........NORTHWEST WINDS 12 TO 21 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS.

TIME (CDT)      7 AM      10 AM     1 PM      4 PM
SKY (%).........92        87        81        70
WEATHER COV.....S CHC     S CHC     CHANCE    CHANCE
WEATHER TYPE....RNSHWR    RNSHWR    RNSHWR    RNSHWR
TEMP............50        56        62        64
RH..............77        57        50        43
20 FT WIND......S 12G15   SW 12G15  W 15G20   NW 21G30
EYE LEVEL WIND..S 9G15    SW 9G15   W 11G20   NW 15G30
MIX HGT (FT)....1000      4000      6400      9000
MIXNG WIND......S 14      W 18      NW 21     NW 22
HAINES INDEX....3         3         4         4

$$
FORECASTER...WILKINS
REQUESTED BY...IOWA DNR
TYPE OF REQUEST...PRESCRIBED
.TAG 20110505.BIGCR.01/DMX