Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 221130
FWSDMX

Spot Forecast for West B Pool...USFWS
National Weather Service Des Moines IA
630 AM CDT Sat Apr 22 2017

Forecast is based on ignition time of 0700 CDT on April 22.
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...

Quiet weather is expected through the weekend with high pressure
dominating the upper Midwest. Winds will be light to moderate from
the north to northeast today with the stronger winds in southern
Iowa. Relative humidity values will drop into the 20 to 30 percent
range by this afternoon across much of central Iowa. Smoke
dispersion will be better in southern Iowa where mixing will be
deeper than in the north.

.TODAY...

Sky/weather.........Sunny (10-20 percent).
Temperature.........37 at ignition...Max 65.
RH..................92 percent at ignition...Min 28 percent.
Eye level winds.....North winds 5 to 8 mph.
Wind (20 ft)........Winds north at 5 mph at ignition...otherwise
                    North winds 5 to 8 mph.
Mixing height.......300 ft AGL at ignition...otherwise 300-800 ft
                    AGL increasing to 5400-5500 ft AGL.
Transport winds.....North 2 to 6 mph.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth at ignition...max 6.

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........16  13  9   5   4   3   2   2   2   2   2
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............37  41  46  51  56  59  61  63  64  64  65
RH..............92  79  68  56  45  39  36  32  30  29  28
20 FT WIND DIR..N   N   NE  NE  NE  N   N   N   N   N   N
20 FT WIND SPD..5   5   6   7   8   8   8   7   6   6   6
20 FT WIND GUST.        10  10  10  10  10  10  10  10  10
EYE LVL WND DIR.N   N   NE  NE  NE  N   N   N   N   N   N
EYE LVL WND SPD.3   3   4   4   5   5   5   4   4   4   4
EYE LVL WND GST.        10  10  10  10  10  10  10  10  10
MIX HGT (KFT)...0.3 0.4 0.6 0.8 2.4 3.9 5.5 5.5 5.5 5.5 5.4
MIXNG WIND DIR..N   N   NE  NE  NE  NE  N   N   N   N   N
MIXNG WIND SPD..3   3   5   5   5   6   6   6   5   3   2
HAINES INDEX....5   5   5   5   5   6   6   6   5   5   5

.TONIGHT...

Sky/weather.........Clear (0-5 percent).
Temperature.........Min 41.
RH..................Max 76 percent.
Eye level winds.....Northwest winds 5 to 7 mph early in the evening
                    becoming light, then becoming southwest 6 to 8
                    mph in the late evening and overnight.
Wind (20 ft)........Northwest winds 5 to 7 mph early in the evening
                    becoming light, then becoming southwest 6 to 8
                    mph in the late evening and overnight.
Mixing height.......3600-5400 ft AGL decreasing to 300-1900 ft AGL
                    in the late evening and overnight.
Transport winds.....West 2 to 3 mph shifting to the southwest 5 to
                    7 mph in the late evening and overnight.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (CDT)      6 PM      9 PM      MIDNGT    3 AM
SKY (%).........2         1         1         1
WEATHER COV.....
WEATHER TYPE....NONE      NONE      NONE      NONE
TSTM COV........
TEMP............65        56        48        45
RH..............30        45        60        65
20 FT WIND......NW 7G10   SW 3G5    S 7G10    SW 6
EYE LEVEL WIND..NW 4G10   SW 2G5    S 4G10    SW 4G5
MIX HGT (FT)....5400      1900      300       300
MIXNG WIND......NW 2      SW 5      S 7       SW 6
HAINES INDEX....5         5         5         5

.SUNDAY...

Sky/weather.........Sunny (0-10 percent).
Temperature.........Max 70.
RH..................Min 30 percent.
Eye level winds.....Southwest winds 6 to 15 mph increasing to
                    around 16 mph late in the afternoon.
Wind (20 ft)........Southwest winds 6 to 15 mph increasing to
                    around 16 mph late in the afternoon.
Mixing height.......300-1400 ft AGL increasing to 4600-5400 ft AGL.
Transport winds.....Southwest 5 to 10 mph increasing to 15 to 24
                    mph in the late morning and afternoon.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (CDT)      6 AM         10 AM        2 PM
SKY (%).........3            0            8
WEATHER COV.....
WEATHER TYPE....NONE         NONE         NONE
TSTM COV........
TEMP............41           58           69
RH..............76           47           31
20 FT WIND......SW 6         SW 13G15     SW 15G20
EYE LEVEL WIND..SW 4G5       SW 8G15      SW 9G20
MIX HGT (FT)....300          3600         4800
MIXNG WIND......SW 5         W 18         SW 16
HAINES INDEX....5            5            5

$$
Forecaster...Cogil
Requested by...Chad Loreth
Type of request...PRESCRIBED
.TAG 1707469.0/DMX
.EMAIL Chad_Loreth@fws.gov


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