Suppression Forecast
Issued by NWS Des Moines, IA

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FNUS73 KDMX 182027
FWSDMX

Spot Forecast for Chodur L2W...worth coounty conservation
National Weather Service Des Moines IA
227 PM CST Mon Dec 18 2017

Forecast is based on ignition time of 1200 CST on December 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...

A cold front will pass through northern Iowa toward daybreak with
winds becoming northwest. The northwest winds will persist through
the day with some gusts expected by midday. Relative humidity
values will be from 50 to 60 percent.

.TUESDAY...

Sky/weather.........Sunny (10-20 percent).
Temperature.........38 at ignition...Max 41.
RH..................59 percent at ignition...Min 50 percent.
Wind (20 ft)........Winds northwest at 12 mph at
                    ignition...otherwise Northwest winds 7 to 12
                    mph.
Mixing height.......2500 ft AGL at ignition...otherwise 2200-3200
                    ft AGL decreasing to 1200 ft AGL late in the
                    afternoon.
Transport winds.....Northwest 20 to 25 mph becoming west 10 to 15
                    mph late in the afternoon.
Haines Index........4 or low potential for large plume dominated
                    fire growth at ignition...max 4.

TIME (CST)      12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........15  13  11  10  10  10
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............38  40  41  40  37  33
RH..............59  52  50  50  56  63
20 FT WIND DIR..NW  NW  NW  NW  NW  NW
20 FT WIND SPD..12  12  12  10  9   7
20 FT WIND GUST.15  15  15  15  10  10
MIX HGT (KFT)...2.5 2.8 3.0 3.2 2.2 1.2
MIXNG WIND DIR..NW  NW  NW  W   W   W
MIXNG WIND SPD..25  25  23  20  15  10
HAINES INDEX....4   4   4   4   4   4

.TUESDAY NIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly cloudy (55-65 percent).
Temperature.........Min 21.
RH..................Max 92 percent.
Wind (20 ft)........Northwest winds 5 to 6 mph early in the evening
                    becoming light.
Mixing height.......300 ft AGL.
Transport winds.....North 2 to 6 mph shifting to the east 2 to 7
                    mph after midnight.
Haines Index........4 to 5 or low potential for large plume
                    dominated fire growth to moderate potential for
                    large plume dominated fire growth.

TIME (CST)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........11     13     22     36     48     58
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............29     26     25     23     23     22
RH..............75     81     81     84     88     88
20 FT WIND......NW 6   NW 5   NW 3   N 2    N 2    NE 3
20 FT WIND GUST.              5                    5
MIX HGT (FT)....300    300    300    300    300    300
MIXNG WIND......W 6    W 5    NW 3   N 2    E 2    SE 5
HAINES INDEX....4      4      4      4      5      5

.WEDNESDAY...

Sky/weather.........Partly sunny (65-75 percent).
Temperature.........Max 36.
RH..................Min 49 percent.
Wind (20 ft)........Southeast winds 5 to 10 mph.
Mixing height.......300-2100 ft AGL increasing to 1300-2700 ft AGL
                    in the afternoon.
Transport winds.....Southeast 8 to 17 mph increasing to 20 to 21
                    mph early in the afternoon.
Haines Index........4 to 5 or low potential for large plume
                    dominated fire growth to moderate potential for
                    large plume dominated fire growth.

TIME (CST)      6 AM      9 AM      NOON      3 PM
SKY (%).........68        74        74        61
WEATHER COV.....
WEATHER TYPE....NONE      NONE      NONE      NONE
TSTM COV........
TEMP............21        25        33        36
RH..............88        74        53        50
20 FT WIND......E 5       E 7       SE 9G10   SE 10G15
MIX HGT (FT)....300       600       2100      2700
MIXNG WIND......E 8       SE 10     SE 15     SE 21
HAINES INDEX....5         5         4         4

$$
Forecaster...Cogil
Requested by...brett
Type of request...PRESCRIBED
.TAG 1720069.0/DMX
.EMAIL brett.backhaus@worthcounty.org



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