Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 241340
FWSDMX

Spot Forecast for Ingham Savanna...Iowa DNR
National Weather Service Des Moines IA
840 AM CDT Mon Apr 24 2017

Forecast is based on ignition time of 0900 CDT on April 24.
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...

Strong south winds are expected today as pressure gradient remains
tight. Strongest winds will be in northern Iowa with gusts
approaching 40 mph by afternoon. Winds will be somewhat weaker in
southern Iowa but still a bit gusty by afternoon. The strong winds
will aid in smoke dispersion today but also make it more difficult
to control any fires once they get started.

.TODAY...

Sky/weather.........Partly sunny (60-70 percent). Slight chance of
                    rain showers late in the afternoon.
Max temperature.....Around 68.
Min humidity........36 percent.
Eye level winds.....Breezy. South winds 13 to 20 mph increasing to
                    23 to 26 mph in the late morning and afternoon.
Wind (20 ft)........Breezy. South winds 13 to 20 mph increasing to
                    23 to 26 mph in the late morning and afternoon.
Mixing height.......300-2000 ft AGL increasing to 6500-6600 ft AGL.
Transport winds.....South 12 to 17 mph increasing to 37 to 44 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 (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........64  68  69  70  70  71  71  72  73
WEATHER COV.....                        SCH SCH SCH
WEATHER TYPE....                        RW  RW  RW
TSTM COV........
TEMP............53  56  58  61  63  65  67  68  68
RH..............57  51  49  44  41  38  37  36  37
20 FT WIND DIR..S   S   S   S   S   S   S   S   S
20 FT WIND SPD..20  23  25  26  26  26  26  26  24
20 FT WIND GUST.30  30  35  35  35  35  35  35  35
EYE LVL WND DIR.S   S   S   S   S   S   S   S   S
EYE LVL WND SPD.12  14  15  16  16  16  16  16  14
EYE LVL WND GST.30  30  35  35  35  35  35  35  35
MIX HGT (KFT)...1.4 2.0 2.4 2.9 3.3 4.4 5.5 6.6 6.5
MIXNG WIND DIR..S   S   S   S   S   S   S   S   S
MIXNG WIND SPD..23  28  30  31  32  37  41  44  44
HAINES INDEX....4   4   4   5   5   5   5   5   5

.TONIGHT...

Sky/weather.........Mostly cloudy (70-80 percent).
Min temperature.....Around 47.
Max humidity........89 percent.
Eye level winds.....South winds 12 to 20 mph decreasing to 5 to 10
                    mph after midnight, then becoming light early
                    in the morning.
Wind (20 ft)........South winds 12 to 20 mph decreasing to 5 to 10
                    mph after midnight, then becoming light early
                    in the morning.
Mixing height.......4500-6400 ft AGL decreasing to 300-700 ft AGL.
Transport winds.....South 37 to 41 mph decreasing to around 28 mph
                    early in the evening, then decreasing to 9 to
                    17 mph late in the evening shifting to the
                    southeast 3 to 9 mph late in the evening.
Haines Index........2 to 4 or very low potential for large plume
                    dominated fire growth to or low potential for
                    large plume dominated fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........75     78     78     72     68     69
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............67     62     58     55     53     49
RH..............40     52     62     69     74     86
20 FT WIND......S 20   S 15   S 12   S 10   S 8    S 5
20 FT WIND GUST.30     20     15     15     10
EYE LEVEL WIND..S 12   S 9    S 7    S 6    S 5    S 3
EYE LVL WND GST.30     20     15     15     10
MIX HGT (FT)....6400   4500   900    500    300    300
MIXNG WIND......S 41   S 28   S 9    S 8    SE 7   SE 3
HAINES INDEX....4      4      3      3      3      2

$$
Forecaster...Vachalek
Requested by...Rob Patterson
Type of request...PRESCRIBED
.TAG 1707661.0/DMX
.EMAIL rob.patterson@dnr.iowa.gov



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