Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 191530
FWSDMX

Spot Forecast for Harmon CRP...Iowa Army National Guard
National Weather Service Des Moines IA
930 AM CST Sun Feb 19 2017

Forecast is based on ignition time of 1000 CST on February 19.
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...

SOUTHEAST WINDS WILL INCREASE TO 10 TO 15 MPH AT TIMES BY THIS
AFTERNOON. RELATIVE HUMIDITY WILL FALL INTO THE 40S THIS
AFTERNOON.

.TODAY...

Sky/weather.........Mostly sunny (30-40 percent).
Max temperature.....Around 70.
Min humidity........44 percent.
Eye level winds.....Light winds becoming south 6 to 13 mph in the
                    late morning and afternoon.
Wind (20 ft)........Light winds becoming south 6 to 13 mph in the
                    late morning and afternoon.
Mixing height.......100-1800 ft AGL increasing to 1200-3000 ft AGL
                    early in the afternoon.
Transport winds.....Southeast 3 to 8 mph increasing to south 13 to
                    21 mph in the afternoon.
Haines Index........4 to 5 or low potential for large plume
                    dominated fire growth to or moderate potential
                    for large plume dominated fire growth.

TIME (CST)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........33  33  32  34  36  38  40  42
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............52  57  63  65  68  70  68  66
RH..............63  59  54  51  48  45  49  54
20 FT WIND DIR..S   S   S   S   S   S   S   S
20 FT WIND SPD..6   6   9   12  13  13  12  10
20 FT WIND GUST.        10  15  15  15  15
EYE LVL WND DIR.S   S   S   S   S   S   S   S
EYE LVL WND SPD.4   4   5   7   8   8   7   6
EYE LVL WND GST.        10  15  15  15  15
MIX HGT (KFT)...0.5 0.8 1.2 1.8 2.4 3.0 2.1 1.2
MIXNG WIND DIR..SE  SE  SE  SE  S   S   S   S
MIXNG WIND SPD..3   6   8   13  18  21  17  13
HAINES INDEX....4   4   4   4   5   5   5   5

.TONIGHT...

Sky/weather.........Partly cloudy (45-55 percent) then becoming
                    mostly cloudy (70-80 percent). Isolated rain
                    showers early in the morning. Isolated
                    thunderstorms early in the morning. Scattered
                    rain showers early in the morning.
Min temperature.....Around 52.
Max humidity........96 percent.
Eye level winds.....Southeast winds 7 to 8 mph.
Wind (20 ft)........Southeast winds 7 to 8 mph. Gusty and erratic
                    winds expected near thunderstorms early in the
                    morning.
Mixing height.......200-300 ft AGL.
Transport winds.....Southeast 7 to 9 mph.
Haines Index........4 to 5 or low potential for large plume
                    dominated fire growth to or moderate potential
                    for large plume dominated fire growth.

TIME (CST)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........45     55     67     82     85     91
WEATHER COV.....                                   ISOLTD
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   RNSHWR
TSTM COV........                                   ISOLTD
TEMP............63     58     54     52     53     53
RH..............60     72     83     89     89     93
20 FT WIND......SE 8   SE 8   S 8    S 8    SE 8   SE 7
20 FT WIND GUST.10     10     10     10     10     10
EYE LEVEL WIND..SE 5   SE 5   S 5    S 5    SE 5   SE 4
EYE LVL WND GST.10     10     10     10     10     10
MIX HGT (FT)....200    200    200    200    200    200
MIXNG WIND......SE 8   SE 8   SE 9   SE 9   SE 9   SE 9
HAINES INDEX....5      5      5      4      5      4

$$
Forecaster...Donavon
Requested by...andy roby
Type of request...PRESCRIBED
.TAG 1702443.0/DMX
.EMAIL andy.roby@iowa.gov


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