Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 231448
FWSDMX

SPOT FORECAST FOR SWEET MARSH...IOWA DNR-USFWS
NATIONAL WEATHER SERVICE DES MOINES IA
948 AM CDT THU APR 23 2015

FORECAST IS BASED ON IGNITION TIME OF 1005 CDT ON APRIL 23.
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 OVER IOWA WILL KEEP WINDS LIGHT WITH SEASONAL
TEMPERATURES AND MIXING LEVELS. RELATIVE HUMIDITIES WILL BE LOW
HOWEVER...DROPPING UNDER 30 PERCENT DURING THE AFTERNOON.

.TODAY...

SKY/WEATHER.........SUNNY (0-10 PERCENT). AREAS OF FROST EARLY IN
                    THE MORNING...THEN PATCHY FROST EARLY IN THE
                    MORNING.
MAX TEMPERATURE.....AROUND 54.
MIN HUMIDITY........26 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS AROUND 6 MPH EARLY IN THE
                    MORNING BECOMING LIGHT...THEN BECOMING
                    NORTHWEST 5 TO 9 MPH EARLY IN THE MORNING.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2200 FT AGL INCREASING TO 6100 FT AGL.
MIXING WINDS........NORTHWEST 6 TO 15 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (1100-44000 KNOT-FT) INCREASING TO
                    GOOD TO EXCELLENT (57200-71000 KNOT-FT) IN THE
                    AFTERNOON.
WIND (20 FT)........NORTHWEST WINDS AROUND 6 MPH EARLY IN THE
                    MORNING BECOMING LIGHT...THEN BECOMING
                    NORTHWEST 5 TO 9 MPH EARLY IN THE MORNING.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........4   4   4   4   3   2   0
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............45  48  50  52  53  54  54
RH..............36  33  30  28  28  26  27
20 FT WIND DIR..NW  NW  NW  NW  NW  NW  NW
20 FT WIND SPD..8   9   9   9   9   9   8
20 FT WIND GUST.10  10  10  10  10  10  10
EYE LVL WND DIR.NW  NW  NW  NW  NW  NW  NW
EYE LVL WND SPD.6   6   6   6   6   6   6
EYE LVL WND GST.10  10  10  10  10  10  10
MIX HGT (KFT)...3.8 4.6 5.3 5.6 5.9 6.1 5.8
MIXNG WIND DIR..NW  NW  NW  NW  NW  NW  NW
MIXNG WIND SPD..13  15  15  15  14  13  12
HAINES INDEX....5   4   4   4   3   3   3

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).
MIN TEMPERATURE.....AROUND 35.
MAX HUMIDITY........61 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS 5 TO 7 MPH SHIFTING TO THE
                    SOUTHEAST 5 TO 8 MPH IN THE LATE EVENING AND
                    OVERNIGHT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......5400 FT AGL DECREASING TO 1900 FT AGL IN THE
                    LATE EVENING AND OVERNIGHT.
MIXING WINDS........WEST 8 TO 12 MPH SHIFTING TO THE SOUTHEAST 5 TO
                    6 MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....POOR TO GOOD (900-53900 KNOT-FT) DECREASING TO
                    POOR TO POOR (900-1300 KNOT-FT) AFTER MIDNIGHT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 7 MPH SHIFTING TO THE
                    SOUTHEAST 5 TO 8 MPH IN THE LATE EVENING AND
                    OVERNIGHT.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........4      7      13     20     27     37
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............53     49     43     39     37     35
RH..............29     30     36     44     52     59
20 FT WIND......NW 7   N 5    E 5    SE 6   SE 7   SE 8
20 FT WIND GUST.                     10     10     10
EYE LEVEL WIND..NW 5   N 4    E 4    SE 4   SE 5   SE 6
EYE LVL WND GST.                     10     10     10
MIX HGT (FT)....5400   3500   300    300    300    300
MIXNG WIND......W 12   SW 8   SE 5   SE 5   SE 5   SE 6
HAINES INDEX....3      3      4      3      3      3

.FRIDAY...

SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT) THEN BECOMING
                    CLOUDY (85-95 PERCENT). CHANCE OF RAIN SHOWERS
                    IN THE LATE MORNING AND AFTERNOON.
MAX TEMPERATURE.....AROUND 54.
MIN HUMIDITY........44 PERCENT.
EYE LEVEL WINDS.....SOUTHEAST WINDS 9 TO 17 MPH.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1700 FT AGL INCREASING TO 3600 FT AGL IN THE
                    AFTERNOON.
MIXING WINDS........SOUTHEAST 6 TO 12 MPH INCREASING TO 29 TO 32
                    MPH.
SMOKE DISPERSAL.....POOR TO GOOD (1400-38000 KNOT-FT) INCREASING TO
                    EXCELLENT TO EXCELLENT (66600-101300 KNOT-FT)
                    IN THE AFTERNOON.
WIND (20 FT)........SOUTHEAST WINDS 9 TO 17 MPH.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
SKY (%).........50        68        81        88
WEATHER COV.....          S CHC     CHANCE    CHANCE
WEATHER TYPE....NONE      RNSHWR    RNSHWR    RNSHWR
TSTM COV........
TEMP............35        43        51        54
RH..............61        51        46        45
20 FT WIND......SE 9G15   SE 14G20  SE 17G25  SE 17G25
EYE LEVEL WIND..SE 6G15   SE 10G20  SE 12G25  SE 12G25
MIX HGT (FT)....300       600       2700      3600
MIXNG WIND......SE 6      SE 17     S 29      SE 32
HAINES INDEX....3         4         3         2

$$
FORECASTER...KOTENBERG/LALUZERNE
REQUESTED BY...LOGAN MCEWAN
TYPE OF REQUEST...PRESCRIBED
.TAG 20150423.SWEET.01/DMX



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