Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 211355
FWSDMX

SPOT FORECAST FOR IOWA LAKE MARSH CARLSON...IOWA DNR
NATIONAL WEATHER SERVICE DES MOINES IA
855 AM CDT THU MAY 21 2015

FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON MAY 21.
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...

TODAY WILL FEATURE NORTHWESTERLY WINDS OF 10 TO 15 MPH AND CLEAR
SKIES. RELATIVE HUMIDITY VALUES WILL FALL TO AROUND 30 PERCENT BY
MID AFTERNOON.

.TODAY...

SKY/WEATHER.........SUNNY (5-15 PERCENT).
TEMPERATURE.........60 AT IGNITION...MAX 70.
RH..................46 PERCENT AT IGNITION...MIN 31 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS 10 TO 17 MPH.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1300 FT AGL INCREASING TO 4000 FT AGL LATE IN
                    THE MORNING...THEN INCREASING TO 8900 FT
                    AGL BY LATE IN THE AFTERNOON.
MIXING WINDS........WEST 8 TO 15 MPH INCREASING TO NORTHWEST 18 TO
                    26 MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (1800-47700 KNOT-FT) INCREASING TO
                    EXCELLENT (143100-205800 KNOT-FT).
WIND (20 FT)........WINDS NORTHWEST AT 15 MPH AT
                    IGNITION...OTHERWISE NORTHWEST WINDS 10 TO 17
                    MPH.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........10  12  13  13  12  20  20
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............60  64  66  68  70  70  69
RH..............46  40  37  34  31  31  32
20 FT WIND DIR..NW  NW  NW  NW  NW  NW  NW
20 FT WIND SPD..15  15  16  17  17  17  16
20 FT WIND GUST.20  20  25  25  25  25  25
EYE LVL WND DIR.NW  NW  NW  NW  NW  NW  NW
EYE LVL WND SPD.11  11  11  12  12  12  11
EYE LVL WND GST.20  20  25  25  25  25  25
MIX HGT (KFT)...2.6 4.0 5.3 6.5 7.7 8.9 6.2
MIXNG WIND DIR..NW  NW  NW  NW  NW  NW  NW
MIXNG WIND SPD..21  23  24  25  26  26  26
HAINES INDEX....5   5   5   5   5   5   5

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (0-10 PERCENT).
TEMPERATURE.........MIN 45.
RH..................MAX 79 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS 6 TO 15 MPH UNTIL EARLY MORNING
                    BECOMING LIGHT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3500 FT AGL DECREASING TO 700 FT AGL.
MIXING WINDS........NORTHWEST 17 TO 25 MPH DECREASING TO 5 TO 10
                    MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....DECREASING TO POOR (900-3900 KNOT-FT) BY MID
                    EVENING.
WIND (20 FT)........NORTHWEST WINDS 6 TO 15 MPH UNTIL EARLY MORNING
                    BECOMING LIGHT.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........11     10     5      6      5      3
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............69     62     54     51     49     47
RH..............32     41     57     63     68     71
20 FT WIND......NW 15  N 9    N 6    NW 7   NW 6   N 2
20 FT WIND GUST.20     10
EYE LEVEL WIND..NW 11  N 6    N 4    NW 5   NW 4   N 1
EYE LVL WND GST.20     10
MIX HGT (FT)....3500   600    300    300    300    300
MIXNG WIND......NW 25  NW 17  NW 6   NW 5   NW 6   W 5
HAINES INDEX....5      5      5      5      5      5

.FRIDAY...

SKY/WEATHER.........SUNNY (10-20 PERCENT).
TEMPERATURE.........MAX 73.
RH..................MIN 29 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTH 5 TO 7 MPH LATE IN
                    THE MORNING.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1600 FT AGL INCREASING TO 8100 FT AGL.
MIXING WINDS........NORTHWEST AROUND 3 MPH SHIFTING TO THE SOUTH 3
                    TO 7 MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (800-45400 KNOT-FT).
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 7 MPH LATE IN
                    THE MORNING.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
SKY (%).........6         6         8         17
WEATHER COV.....
WEATHER TYPE....NONE      NONE      NONE      NONE
TSTM COV........
TEMP............45        58        69        72
RH..............79        53        36        30
20 FT WIND......SW 2      S 3G5     SE 5      SE 7
EYE LEVEL WIND..SW 1      S 2G5     SE 4G5    SE 5
MIX HGT (FT)....300       2900      6000      7700
MIXNG WIND......NW 3      NE 3      E 3       SE 5
HAINES INDEX....5         5         5         5

$$
FORECASTER...SKOW
REQUESTED BY...ROB PATTERSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20150521.IOWAL.01/DMX


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